use explicit private/internal modifiers

src/BizHawk.Emulation.Cores/Arcades/MAME/LibMAME.cs

@@ -5,8 +5,8 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
 {
 	public static class LibMAME
 	{
-		const string dll = "libmamearcade64.dll"; // libmamearcade64.dll libpacmansh64d.dll
+		private const string dll = "libmamearcade64.dll"; // libmamearcade64.dll libpacmansh64d.dll
-		const CallingConvention cc = CallingConvention.Cdecl;
+		private const CallingConvention cc = CallingConvention.Cdecl;
 
 		public enum OutputChannel
 		{

src/BizHawk.Emulation.Cores/CPUs/68000/Instructions/BitArithemetic.cs

@@ -3,7 +3,7 @@
 	partial class MC68000
 	{
 		// TODO, the timing on AND variants is wrong. IE, and.w w/ immediate should be 8 cycles, but I cant figure out how that should work.
-		void AND0() // AND <ea>, Dn
+		private void AND0() // AND <ea>, Dn
 		{
 			int dstReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -36,7 +36,7 @@
 			}
 		}
 
-		void AND0_Disasm(DisassemblyInfo info)
+		private void AND0_Disasm(DisassemblyInfo info)
 		{
 			int dstReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -64,7 +64,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void AND1() // AND Dn, <ea>
+		private void AND1() // AND Dn, <ea>
 		{
 			int srcReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -109,7 +109,7 @@
 			}
 		}
 
-		void AND1_Disasm(DisassemblyInfo info)
+		private void AND1_Disasm(DisassemblyInfo info)
 		{
 			int srcReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -137,7 +137,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void ANDI() // ANDI #<data>, <ea>
+		private void ANDI() // ANDI #<data>, <ea>
 		{
 			int size = (op >> 6) & 0x03;
 			int dstMode = (op >> 3) & 0x07;
@@ -184,7 +184,7 @@
 			}
 		}
 
-		void ANDI_Disasm(DisassemblyInfo info)
+		private void ANDI_Disasm(DisassemblyInfo info)
 		{
 			int size = ((op >> 6) & 0x03);
 			int dstMode = ((op >> 3) & 0x07);
@@ -223,7 +223,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void EOR() // EOR Dn, <ea>
+		private void EOR() // EOR Dn, <ea>
 		{
 			int srcReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -268,7 +268,7 @@
 			}
 		}
 
-		void EOR_Disasm(DisassemblyInfo info)
+		private void EOR_Disasm(DisassemblyInfo info)
 		{
 			int srcReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -296,7 +296,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void EORI()
+		private void EORI()
 		{
 			int size = (op >> 6) & 3;
 			int mode = (op >> 3) & 7;
@@ -340,7 +340,7 @@
 			}
 		}
 
-		void EORI_Disasm(DisassemblyInfo info)
+		private void EORI_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 3;
@@ -375,7 +375,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void OR0() // OR <ea>, Dn
+		private void OR0() // OR <ea>, Dn
 		{
 			int dstReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -408,7 +408,7 @@
 			}
 		}
 
-		void OR0_Disasm(DisassemblyInfo info)
+		private void OR0_Disasm(DisassemblyInfo info)
 		{
 			int dstReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -436,7 +436,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void OR1() // OR Dn, <ea>
+		private void OR1() // OR Dn, <ea>
 		{
 			int srcReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -481,7 +481,7 @@
 			}
 		}
 
-		void OR1_Disasm(DisassemblyInfo info)
+		private void OR1_Disasm(DisassemblyInfo info)
 		{
 			int srcReg = (op >> 9) & 0x07;
 			int size = (op >> 6) & 0x03;
@@ -509,7 +509,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void ORI()
+		private void ORI()
 		{
 			int size = (op >> 6) & 3;
 			int mode = (op >> 3) & 7;
@@ -553,7 +553,7 @@
 			}
 		}
 
-		void ORI_Disasm(DisassemblyInfo info)
+		private void ORI_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 3;
@@ -588,7 +588,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void NOT()
+		private void NOT()
 		{
 			int size = (op >> 6) & 0x03;
 			int mode = (op >> 3) & 0x07;
@@ -632,7 +632,7 @@
 			}
 		}
 
-		void NOT_Disasm(DisassemblyInfo info)
+		private void NOT_Disasm(DisassemblyInfo info)
 		{
 			int size = (op >> 6) & 0x03;
 			int mode = (op >> 3) & 0x07;
@@ -659,7 +659,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void LSLd()
+		private void LSLd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -707,7 +707,7 @@
 			}
 		}
 
-		void LSLd_Disasm(DisassemblyInfo info)
+		private void LSLd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -729,7 +729,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void LSRd()
+		private void LSRd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -777,7 +777,7 @@
 			}
 		}
 
-		void LSRd_Disasm(DisassemblyInfo info)
+		private void LSRd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -799,7 +799,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void ASLd()
+		private void ASLd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -853,7 +853,7 @@
 			}
 		}
 
-		void ASLd_Disasm(DisassemblyInfo info)
+		private void ASLd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -875,7 +875,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void ASRd()
+		private void ASRd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -929,7 +929,7 @@
 			}
 		}
 
-		void ASRd_Disasm(DisassemblyInfo info)
+		private void ASRd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -951,7 +951,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void ROLd()
+		private void ROLd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -999,7 +999,7 @@
 			}
 		}
 
-		void ROLd_Disasm(DisassemblyInfo info)
+		private void ROLd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -1021,7 +1021,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void RORd()
+		private void RORd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -1069,7 +1069,7 @@
 			}
 		}
 
-		void RORd_Disasm(DisassemblyInfo info)
+		private void RORd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -1091,7 +1091,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void ROXLd()
+		private void ROXLd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -1142,7 +1142,7 @@
 			}
 		}
 
-		void ROXLd_Disasm(DisassemblyInfo info)
+		private void ROXLd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -1164,7 +1164,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void ROXRd()
+		private void ROXRd()
 		{
 			int rot = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -1215,7 +1215,7 @@
 			}
 		}
 
-		void ROXRd_Disasm(DisassemblyInfo info)
+		private void ROXRd_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int rot = (op >> 9) & 7;
@@ -1237,7 +1237,7 @@
 			info.Length = pc - info.PC;
 		}
 
-		void SWAP()
+		private void SWAP()
 		{
 			int reg = op & 7;
 			D[reg].u32 = (D[reg].u32 << 16) | (D[reg].u32 >> 16);
@@ -1247,7 +1247,7 @@
 			PendingCycles -= 4;
 		}
 
-		void SWAP_Disasm(DisassemblyInfo info)
+		private void SWAP_Disasm(DisassemblyInfo info)
 		{
 			int reg = op & 7;
 			info.Mnemonic = "swap";

src/BizHawk.Emulation.Cores/CPUs/68000/Instructions/DataMovement.cs

@@ -5,7 +5,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 {
 	partial class MC68000
 	{
-		void MOVE()
+		private void MOVE()
 		{
 			int size = ((op >> 12) & 0x03);
 			int dstMode = ((op >> 6) & 0x07);
@@ -41,7 +41,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			Z = (value == 0);
 		}
 
-		void MOVE_Disasm(DisassemblyInfo info)
+		private void MOVE_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = ((op >> 12) & 0x03);
@@ -72,7 +72,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MOVEA()
+		private void MOVEA()
 		{
 			int size = ((op >> 12) & 0x03);
 			int dstReg = ((op >> 9) & 0x07);
@@ -131,7 +131,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void MOVEA_Disasm(DisassemblyInfo info)
+		private void MOVEA_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = ((op >> 12) & 0x03);
@@ -152,7 +152,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MOVEQ()
+		private void MOVEQ()
 		{
 			int value = (sbyte)op; // 8-bit data payload is sign-extended to 32-bits.
 			N = (value & 0x80) != 0;
@@ -163,13 +163,13 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 4;
 		}
 
-		void MOVEQ_Disasm(DisassemblyInfo info)
+		private void MOVEQ_Disasm(DisassemblyInfo info)
 		{
 			info.Mnemonic = "moveq";
 			info.Args = $"#{(sbyte)op}, D{(op >> 9) & 7}";
 		}
 
-		void MOVEM0()
+		private void MOVEM0()
 		{
 			// Move register to memory
 			int size = (op >> 6) & 1;
@@ -302,7 +302,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void MOVEM1()
+		private void MOVEM1()
 		{
 			// Move memory to register
 			int size = (op >> 6) & 1;
@@ -387,7 +387,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		static string DisassembleRegisterList0(uint registers)
+		private static string DisassembleRegisterList0(uint registers)
 		{
 			var str = new StringBuilder();
 			int count = 0;
@@ -442,7 +442,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			return str.ToString();
 		}
 
-		static string DisassembleRegisterList1(uint registers)
+		private static string DisassembleRegisterList1(uint registers)
 		{
 			var str = new StringBuilder();
 			int count = 0;
@@ -497,7 +497,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			return str.ToString();
 		}
 
-		void MOVEM0_Disasm(DisassemblyInfo info)
+		private void MOVEM0_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 1;
@@ -512,7 +512,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MOVEM1_Disasm(DisassemblyInfo info)
+		private void MOVEM1_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 1;
@@ -527,7 +527,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void LEA()
+		private void LEA()
 		{
 			int mode = (op >> 3) & 7;
 			int sReg = (op >> 0) & 7;
@@ -551,7 +551,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void LEA_Disasm(DisassemblyInfo info)
+		private void LEA_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int mode = (op >> 3) & 7;
@@ -565,7 +565,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void CLR()
+		private void CLR()
 		{
 			int size = (op >> 6) & 3;
 			int mode = (op >> 3) & 7;
@@ -582,7 +582,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			Z = true;
 		}
 
-		void CLR_Disasm(DisassemblyInfo info)
+		private void CLR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 3;
@@ -598,7 +598,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void EXT()
+		private void EXT()
 		{
 			int size = (op >> 6) & 1;
 			int reg = op & 7;
@@ -622,7 +622,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 4;
 		}
 
-		void EXT_Disasm(DisassemblyInfo info)
+		private void EXT_Disasm(DisassemblyInfo info)
 		{
 			int size = (op >> 6) & 1;
 			int reg = op & 7;
@@ -634,7 +634,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void PEA()
+		private void PEA()
 		{
 			int mode = (op >> 3) & 7;
 			int reg = (op >> 0) & 7;
@@ -660,7 +660,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void PEA_Disasm(DisassemblyInfo info)
+		private void PEA_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int mode = (op >> 3) & 7;

src/BizHawk.Emulation.Cores/CPUs/68000/Instructions/IntegerMath.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 {
 	partial class MC68000
 	{
-		void ADD0()
+		private void ADD0()
 		{
 			int Dreg = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -55,7 +55,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void ADD1()
+		private void ADD1()
 		{
 			int Dreg = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -106,7 +106,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void ADD_Disasm(DisassemblyInfo info)
+		private void ADD_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int Dreg = (op >> 9) & 7;
@@ -128,7 +128,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void ADDI()
+		private void ADDI()
 		{
 			int size = (op >> 6) & 3;
 			int mode = (op >> 3) & 7;
@@ -184,7 +184,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void ADDI_Disasm(DisassemblyInfo info)
+		private void ADDI_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 3;
@@ -209,7 +209,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void ADDQ()
+		private void ADDQ()
 		{
 			int data = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -277,7 +277,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void ADDQ_Disasm(DisassemblyInfo info)
+		private void ADDQ_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int data = (op >> 9) & 7;
@@ -296,7 +296,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void ADDA()
+		private void ADDA()
 		{
 			int aReg = (op >> 9) & 7;
 			int size = (op >> 8) & 1;
@@ -320,7 +320,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void ADDA_Disasm(DisassemblyInfo info)
+		private void ADDA_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int aReg = (op >> 9) & 7;
@@ -334,7 +334,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void SUB0()
+		private void SUB0()
 		{
 			int dReg = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -385,7 +385,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void SUB1()
+		private void SUB1()
 		{
 			int dReg = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -436,7 +436,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void SUB_Disasm(DisassemblyInfo info)
+		private void SUB_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int dReg = (op >> 9) & 7;
@@ -458,7 +458,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void SUBI()
+		private void SUBI()
 		{
 			int size = (op >> 6) & 3;
 			int mode = (op >> 3) & 7;
@@ -511,7 +511,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void SUBI_Disasm(DisassemblyInfo info)
+		private void SUBI_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 3;
@@ -536,7 +536,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void SUBQ()
+		private void SUBQ()
 		{
 			int data = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -601,7 +601,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void SUBQ_Disasm(DisassemblyInfo info)
+		private void SUBQ_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int data = (op >> 9) & 7;
@@ -620,7 +620,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void SUBA()
+		private void SUBA()
 		{
 			int aReg = (op >> 9) & 7;
 			int size = (op >> 8) & 1;
@@ -644,7 +644,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void SUBA_Disasm(DisassemblyInfo info)
+		private void SUBA_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 
@@ -659,7 +659,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void NEG()
+		private void NEG()
 		{
 			int size = (op >> 6) & 0x03;
 			int mode = (op >> 3) & 0x07;
@@ -711,7 +711,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void NEG_Disasm(DisassemblyInfo info)
+		private void NEG_Disasm(DisassemblyInfo info)
 		{
 			int size = (op >> 6) & 0x03;
 			int mode = (op >> 3) & 0x07;
@@ -738,7 +738,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void CMP()
+		private void CMP()
 		{
 			int dReg = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -788,7 +788,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void CMP_Disasm(DisassemblyInfo info)
+		private void CMP_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 
@@ -815,7 +815,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void CMPA()
+		private void CMPA()
 		{
 			int aReg = (op >> 9) & 7;
 			int size = (op >> 8) & 1;
@@ -851,7 +851,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void CMPA_Disasm(DisassemblyInfo info)
+		private void CMPA_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 
@@ -874,7 +874,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void CMPM()
+		private void CMPM()
 		{
 			int axReg = (op >> 9) & 7;
 			int size = (op >> 6) & 3;
@@ -921,7 +921,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void CMPM_Disasm(DisassemblyInfo info)
+		private void CMPM_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int axReg = (op >> 9) & 7;
@@ -938,7 +938,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void CMPI()
+		private void CMPI()
 		{
 			int size = (op >> 6) & 3;
 			int mode = (op >> 3) & 7;
@@ -988,7 +988,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void CMPI_Disasm(DisassemblyInfo info)
+		private void CMPI_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 3;
@@ -1017,7 +1017,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MULU()
+		private void MULU()
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -1034,7 +1034,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 70 + EACyclesBW[mode, reg];
 		}
 
-		void MULU_Disasm(DisassemblyInfo info)
+		private void MULU_Disasm(DisassemblyInfo info)
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -1046,7 +1046,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MULS()
+		private void MULS()
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -1063,7 +1063,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 70 + EACyclesBW[mode, reg];
 		}
 
-		void MULS_Disasm(DisassemblyInfo info)
+		private void MULS_Disasm(DisassemblyInfo info)
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -1075,7 +1075,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void DIVU()
+		private void DIVU()
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -1099,7 +1099,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 140 + EACyclesBW[mode, reg]; // this is basically a rough approximation at best.
 		}
 
-		void DIVU_Disasm(DisassemblyInfo info)
+		private void DIVU_Disasm(DisassemblyInfo info)
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -1111,7 +1111,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void DIVS()
+		private void DIVS()
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -1135,7 +1135,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 140 + EACyclesBW[mode, reg];
 		}
 
-		void DIVS_Disasm(DisassemblyInfo info)
+		private void DIVS_Disasm(DisassemblyInfo info)
 		{
 			int dreg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;

src/BizHawk.Emulation.Cores/CPUs/68000/Instructions/ProgramFlow.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 {
 	partial class MC68000
 	{
-		bool TestCondition(int condition)
+		private bool TestCondition(int condition)
 		{
 			switch (condition)
 			{
@@ -29,7 +29,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		string DisassembleCondition(int condition)
+		private string DisassembleCondition(int condition)
 		{
 			switch (condition)
 			{
@@ -53,7 +53,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void Bcc() // Branch on condition
+		private void Bcc() // Branch on condition
 		{
 			sbyte displacement8 = (sbyte)op;
 			int cond = (op >> 8) & 0x0F;
@@ -85,7 +85,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void Bcc_Disasm(DisassemblyInfo info)
+		private void Bcc_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			sbyte displacement8 = (sbyte)op;
@@ -104,7 +104,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BRA()
+		private void BRA()
 		{
 			sbyte displacement8 = (sbyte)op;
 
@@ -115,7 +115,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 10;
 		}
 
-		void BRA_Disasm(DisassemblyInfo info)
+		private void BRA_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			info.Mnemonic = "bra";
@@ -131,7 +131,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BSR()
+		private void BSR()
 		{
 			sbyte displacement8 = (sbyte)op;
 
@@ -151,7 +151,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 18;
 		}
 
-		void BSR_Disasm(DisassemblyInfo info)
+		private void BSR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			info.Mnemonic = "bsr";
@@ -167,7 +167,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void DBcc()
+		private void DBcc()
 		{
 			if (TestCondition((op >> 8) & 0x0F) == true)
 			{
@@ -192,7 +192,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void DBcc_Disasm(DisassemblyInfo info)
+		private void DBcc_Disasm(DisassemblyInfo info)
 		{
 			int cond = (op >> 8) & 0x0F;
 			if (cond == 1)
@@ -205,20 +205,20 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = 4;
 		}
 
-		void RTS()
+		private void RTS()
 		{
 			PC = ReadLong(A[7].s32);
 			A[7].s32 += 4;
 			PendingCycles -= 16;
 		}
 
-		void RTS_Disasm(DisassemblyInfo info)
+		private void RTS_Disasm(DisassemblyInfo info)
 		{
 			info.Mnemonic = "rts";
 			info.Args = "";
 		}
 
-		void RTR()
+		private void RTR()
 		{
 			ushort sr = (ushort)ReadWord(A[7].s32);
 			A[7].s32 += 2;
@@ -233,13 +233,13 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 20;
 		}
 
-		void RTR_Disasm(DisassemblyInfo info)
+		private void RTR_Disasm(DisassemblyInfo info)
 		{
 			info.Mnemonic = "rtr";
 			info.Args = "";
 		}
 
-		void RTE()
+		private void RTE()
 		{
 			short newSR = ReadWord(A[7].s32);
 			A[7].s32 += 2;
@@ -249,13 +249,13 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 20;
 		}
 
-		void RTE_Disasm(DisassemblyInfo info)
+		private void RTE_Disasm(DisassemblyInfo info)
 		{
 			info.Mnemonic = "rte";
 			info.Args = "";
 		}
 
-		void TST()
+		private void TST()
 		{
 			int size = (op >> 6) & 3;
 			int mode = (op >> 3) & 7;
@@ -273,7 +273,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			Z = (value == 0);
 		}
 
-		void TST_Disasm(DisassemblyInfo info)
+		private void TST_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int size = (op >> 6) & 3;
@@ -289,7 +289,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BTSTi()
+		private void BTSTi()
 		{
 			int bit = ReadWord(PC); PC += 2;
 			int mode = (op >> 3) & 7;
@@ -311,7 +311,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BTSTi_Disasm(DisassemblyInfo info)
+		private void BTSTi_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int bit = ReadWord(pc); pc += 2;
@@ -323,7 +323,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BTSTr()
+		private void BTSTr()
 		{
 			int dReg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -346,7 +346,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BTSTr_Disasm(DisassemblyInfo info)
+		private void BTSTr_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int dReg = (op >> 9) & 7;
@@ -358,7 +358,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BCHGi()
+		private void BCHGi()
 		{
 			int bit = ReadWord(PC); PC += 2;
 			int mode = (op >> 3) & 7;
@@ -384,7 +384,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BCHGi_Disasm(DisassemblyInfo info)
+		private void BCHGi_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int bit = ReadWord(pc); pc += 2;
@@ -396,7 +396,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BCHGr()
+		private void BCHGr()
 		{
 			int dReg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -423,7 +423,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BCHGr_Disasm(DisassemblyInfo info)
+		private void BCHGr_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int dReg = (op >> 9) & 7;
@@ -435,7 +435,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BCLRi()
+		private void BCLRi()
 		{
 			int bit = ReadWord(PC); PC += 2;
 			int mode = (op >> 3) & 7;
@@ -461,7 +461,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BCLRi_Disasm(DisassemblyInfo info)
+		private void BCLRi_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int bit = ReadWord(pc); pc += 2;
@@ -473,7 +473,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BCLRr()
+		private void BCLRr()
 		{
 			int dReg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -500,7 +500,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BCLRr_Disasm(DisassemblyInfo info)
+		private void BCLRr_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int dReg = (op >> 9) & 7;
@@ -512,7 +512,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BSETi()
+		private void BSETi()
 		{
 			int bit = ReadWord(PC); PC += 2;
 			int mode = (op >> 3) & 7;
@@ -538,7 +538,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BSETi_Disasm(DisassemblyInfo info)
+		private void BSETi_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int bit = ReadWord(pc); pc += 2;
@@ -550,7 +550,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void BSETr()
+		private void BSETr()
 		{
 			int dReg = (op >> 9) & 7;
 			int mode = (op >> 3) & 7;
@@ -577,7 +577,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void BSETr_Disasm(DisassemblyInfo info)
+		private void BSETr_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int dReg = (op >> 9) & 7;
@@ -589,7 +589,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void JMP()
+		private void JMP()
 		{
 			int mode = (op >> 3) & 7;
 			int reg = (op >> 0) & 7;
@@ -612,7 +612,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void JMP_Disasm(DisassemblyInfo info)
+		private void JMP_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int mode = (op >> 3) & 7;
@@ -622,7 +622,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void JSR()
+		private void JSR()
 		{
 			int mode = (op >> 3) & 7;
 			int reg = (op >> 0) & 7;
@@ -649,7 +649,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void JSR_Disasm(DisassemblyInfo info)
+		private void JSR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int mode = (op >> 3) & 7;
@@ -659,7 +659,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void LINK()
+		private void LINK()
 		{
 			int reg = op & 7;
 			A[7].s32 -= 4;
@@ -670,7 +670,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 16;
 		}
 
-		void LINK_Disasm(DisassemblyInfo info)
+		private void LINK_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int reg = op & 7;
@@ -679,7 +679,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void UNLK()
+		private void UNLK()
 		{
 			int reg = op & 7;
 			A[7].s32 = A[reg].s32;
@@ -688,7 +688,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 12;
 		}
 
-		void UNLK_Disasm(DisassemblyInfo info)
+		private void UNLK_Disasm(DisassemblyInfo info)
 		{
 			int reg = op & 7;
 			info.Mnemonic = "unlk";
@@ -696,17 +696,17 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = 2;
 		}
 
-		void NOP()
+		private void NOP()
 		{
 			PendingCycles -= 4;
 		}
 
-		void NOP_Disasm(DisassemblyInfo info)
+		private void NOP_Disasm(DisassemblyInfo info)
 		{
 			info.Mnemonic = "nop";
 		}
 
-		void Scc() // Set on condition
+		private void Scc() // Set on condition
 		{
 			int cond = (op >> 8) & 0x0F;
 			int mode = (op >> 3) & 7;
@@ -726,7 +726,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void Scc_Disasm(DisassemblyInfo info)
+		private void Scc_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int cond = (op >> 8) & 0x0F;

src/BizHawk.Emulation.Cores/CPUs/68000/Instructions/Supervisor.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 {
 	partial class MC68000
 	{
-		void MOVEtSR()
+		private void MOVEtSR()
 		{
 			if (S == false)
 				throw new Exception("Write to SR when not in supervisor mode. supposed to trap or something...");
@@ -15,7 +15,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 12 + EACyclesBW[mode, reg];
 		}
 
-		void MOVEtSR_Disasm(DisassemblyInfo info)
+		private void MOVEtSR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int mode = (op >> 3) & 7;
@@ -25,7 +25,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MOVEfSR()
+		private void MOVEfSR()
 		{
 			int mode = (op >> 3) & 7;
 			int reg = (op >> 0) & 7;
@@ -33,7 +33,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= (mode == 0) ? 6 : 8 + EACyclesBW[mode, reg];
 		}
 
-		void MOVEfSR_Disasm(DisassemblyInfo info)
+		private void MOVEfSR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int mode = (op >> 3) & 7;
@@ -43,7 +43,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MOVEUSP()
+		private void MOVEUSP()
 		{
 			if (S == false)
 				throw new Exception("MOVE to USP when not supervisor. needs to trap");
@@ -57,7 +57,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 4;
 		}
 
-		void MOVEUSP_Disasm(DisassemblyInfo info)
+		private void MOVEUSP_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int dir = (op >> 3) & 1;
@@ -67,7 +67,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void ANDI_SR()
+		private void ANDI_SR()
 		{
 			if (S == false)
 				throw new Exception("trap!");
@@ -75,7 +75,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 20;
 		}
 
-		void ANDI_SR_Disasm(DisassemblyInfo info)
+		private void ANDI_SR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			info.Mnemonic = "andi";
@@ -83,7 +83,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void EORI_SR()
+		private void EORI_SR()
 		{
 			if (S == false)
 				throw new Exception("trap!");
@@ -91,7 +91,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 20;
 		}
 
-		void EORI_SR_Disasm(DisassemblyInfo info)
+		private void EORI_SR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			info.Mnemonic = "eori";
@@ -99,7 +99,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void ORI_SR()
+		private void ORI_SR()
 		{
 			if (S == false)
 				throw new Exception("trap!");
@@ -107,7 +107,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 20;
 		}
 
-		void ORI_SR_Disasm(DisassemblyInfo info)
+		private void ORI_SR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			info.Mnemonic = "ori";
@@ -115,7 +115,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void MOVECCR()
+		private void MOVECCR()
 		{
 			int mode = (op >> 3) & 7;
 			int reg = (op >> 0) & 7;
@@ -126,7 +126,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			PendingCycles -= 12 + EACyclesBW[mode, reg];
 		}
 
-		void MOVECCR_Disasm(DisassemblyInfo info)
+		private void MOVECCR_Disasm(DisassemblyInfo info)
 		{
 			int pc = info.PC + 2;
 			int mode = (op >> 3) & 7;
@@ -136,20 +136,20 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			info.Length = pc - info.PC;
 		}
 
-		void TRAP()
+		private void TRAP()
 		{
 			int vector = 32 + (op & 0x0F);
 			TrapVector(vector);
 			PendingCycles -= 26;
 		}
 
-		void TRAP_Disasm(DisassemblyInfo info)
+		private void TRAP_Disasm(DisassemblyInfo info)
 		{
 			info.Mnemonic = "trap";
 			info.Args = $"#${op & 0xF:X}";
 		}
 
-		void TrapVector(int vector)
+		private void TrapVector(int vector)
 		{
 			short sr = (short)SR;        // capture current SR.
 			S = true;                    // switch to supervisor mode, if not already in it.

src/BizHawk.Emulation.Cores/CPUs/68000/MC68000.cs

@@ -17,9 +17,9 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 		public int PendingCycles;
 
 		// Status Registers
-		int InterruptMaskLevel;
+		private int InterruptMaskLevel;
-		bool s, m;
+		private bool s, m;
-		int usp, ssp;
+		private int usp, ssp;
 
 		/// <summary>Machine/Interrupt mode</summary>
 		/// <remarks>TODO probably have some switch logic maybe</remarks>

src/BizHawk.Emulation.Cores/CPUs/68000/Memory.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 {
 	partial class MC68000
 	{
-		sbyte ReadValueB(int mode, int reg)
+		private sbyte ReadValueB(int mode, int reg)
 		{
 			sbyte value;
 			switch (mode)
@@ -53,7 +53,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		short ReadValueW(int mode, int reg)
+		private short ReadValueW(int mode, int reg)
 		{
 			short value;
 			switch (mode)
@@ -102,7 +102,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		int ReadValueL(int mode, int reg)
+		private int ReadValueL(int mode, int reg)
 		{
 			int value;
 			switch (mode)
@@ -151,7 +151,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		sbyte PeekValueB(int mode, int reg)
+		private sbyte PeekValueB(int mode, int reg)
 		{
 			sbyte value;
 			switch (mode)
@@ -198,7 +198,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		short PeekValueW(int mode, int reg)
+		private short PeekValueW(int mode, int reg)
 		{
 			short value;
 			switch (mode)
@@ -245,7 +245,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		int PeekValueL(int mode, int reg)
+		private int PeekValueL(int mode, int reg)
 		{
 			int value;
 			switch (mode)
@@ -292,7 +292,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		int ReadAddress(int mode, int reg)
+		private int ReadAddress(int mode, int reg)
 		{
 			int addr;
 			switch (mode)
@@ -318,7 +318,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		string DisassembleValue(int mode, int reg, int size, ref int pc)
+		private string DisassembleValue(int mode, int reg, int size, ref int pc)
 		{
 			string value;
 			int addr;
@@ -352,7 +352,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		string DisassembleImmediate(int size, ref int pc)
+		private string DisassembleImmediate(int size, ref int pc)
 		{
 			int immed;
 			switch (size)
@@ -370,7 +370,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new ArgumentException("Invalid size");
 		}
 
-		string DisassembleAddress(int mode, int reg, ref int pc)
+		private string DisassembleAddress(int mode, int reg, ref int pc)
 		{
 			int addr;
 			switch (mode)
@@ -396,7 +396,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			throw new Exception("Invalid addressing mode!");
 		}
 
-		void WriteValueB(int mode, int reg, sbyte value)
+		private void WriteValueB(int mode, int reg, sbyte value)
 		{
 			switch (mode)
 			{
@@ -445,7 +445,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void WriteValueW(int mode, int reg, short value)
+		private void WriteValueW(int mode, int reg, short value)
 		{
 			switch (mode)
 			{
@@ -494,7 +494,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void WriteValueL(int mode, int reg, int value)
+		private void WriteValueL(int mode, int reg, int value)
 		{
 			switch (mode)
 			{
@@ -543,7 +543,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		int GetIndex()
+		private int GetIndex()
 		{
 			//Console.WriteLine("IN INDEX PORTION - NOT VERIFIED!!!");
 			// TODO kid chameleon triggers this in startup sequence
@@ -572,7 +572,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			return displacement + indexReg;
 		}
 
-		int PeekIndex()
+		private int PeekIndex()
 		{
 			//Console.WriteLine("IN INDEX PORTION - NOT VERIFIED!!!");
 
@@ -600,7 +600,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			return displacement + indexReg;
 		}
 
-		string DisassembleIndex(string baseRegister, short extension)
+		private string DisassembleIndex(string baseRegister, short extension)
 		{
 			int d_a = (extension >> 15) & 0x1;
 			int reg = (extension >> 12) & 0x7;

src/BizHawk.Emulation.Cores/CPUs/68000/OpcodeTable.cs

@@ -7,7 +7,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 {
 	partial class MC68000
 	{
-		void BuildOpcodeTable()
+		private void BuildOpcodeTable()
 		{
 			// NOTE: Do not change the order of these assigns without testing. There is
 			// some overwriting of less-specific opcodes with more-specific opcodes.
@@ -96,7 +96,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			Assign("trap", TRAP, "010011100100", "Data4");
 		}
 
-		void Assign(string instr, Action exec, string root, params string[] bitfield)
+		private void Assign(string instr, Action exec, string root, params string[] bitfield)
 		{
 			List<string> opList = new List<string>();
 			opList.Add(root);
@@ -127,13 +127,13 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			}
 		}
 
-		void AppendConstant(List<string> ops, string constant)
+		private void AppendConstant(List<string> ops, string constant)
 		{
 			for (int i = 0; i < ops.Count; i++)
 				ops[i] = ops[i] + constant;
 		}
 
-		List<string> AppendPermutations(List<string> ops, string[] permutations)
+		private List<string> AppendPermutations(List<string> ops, string[] permutations)
 		{
 			List<string> output = new List<string>();
 
@@ -144,7 +144,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			return output;
 		}
 
-		List<string> AppendData(List<string> ops, int bits)
+		private List<string> AppendData(List<string> ops, int bits)
 		{
 			List<string> output = new List<string>();
 
@@ -155,7 +155,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			return output;
 		}
 
-		int BinaryExp(int bits)
+		private int BinaryExp(int bits)
 		{
 			int res = 1;
 			for (int i = 0; i < bits; i++)
@@ -163,12 +163,12 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			return res;
 		}
 
-		static readonly string[] Size2_0 = { "01", "11", "10" };
+		private static readonly string[] Size2_0 = { "01", "11", "10" };
-		static readonly string[] Size2_1 = { "00", "01", "10" };
+		private static readonly string[] Size2_1 = { "00", "01", "10" };
-		static readonly string[] Size1 = { "0", "1" };
+		private static readonly string[] Size1 = { "0", "1" };
-		static readonly string[] Xn3 = { "000", "001", "010", "011", "100", "101", "110", "111" };
+		private static readonly string[] Xn3 = { "000", "001", "010", "011", "100", "101", "110", "111" };
 
-		static readonly string[] Xn3Am3 = {
+		private static readonly string[] Xn3Am3 = {
 			"000000", // Dn   Data register
 			"001000",
 			"010000",
@@ -239,7 +239,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			"100111", // #imm          Immediate            
 		};
 
-		static readonly string[] Am3Xn3 = {
+		private static readonly string[] Am3Xn3 = {
 			"000000", // Dn   Data register
 			"000001",
 			"000010",
@@ -310,7 +310,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			"111100", // #imm          Immediate            
 		};
 
-		static readonly string[] ConditionMain = {
+		private static readonly string[] ConditionMain = {
 			"0010", // HI  Higher (unsigned)
 			"0011", // LS  Lower or Same (unsigned)
 			"0100", // CC  Carry Clear (aka Higher or Same, unsigned)
@@ -327,7 +327,7 @@ namespace BizHawk.Emulation.Cores.Components.M68000
 			"1111"  // LE  Less or Equal (signed)
 		};
 
-		static readonly string[] ConditionAll = {
+		private static readonly string[] ConditionAll = {
 			"0000", // T   True 
 			"0001", // F   False            
 			"0010", // HI  Higher (unsigned)

src/BizHawk.Emulation.Cores/CPUs/68000/Tables.cs

@@ -2,7 +2,7 @@
 {
 	partial class MC68000
 	{
-		static readonly int[,] MoveCyclesBW = new int[12, 9]
+		private static readonly int[,] MoveCyclesBW = new int[12, 9]
 		{
 			{ 4, 4, 8, 8, 8, 12, 14, 12, 16 },
 			{ 4, 4, 8, 8, 8, 12, 14, 12, 16 },
@@ -18,7 +18,7 @@
 			{ 8, 8, 12, 12, 12, 16, 18, 16, 20 }
 		};
 
-		static readonly int[,] MoveCyclesL = new int[12, 9]
+		private static readonly int[,] MoveCyclesL = new int[12, 9]
 		{
 			{ 4, 4, 12, 12, 12, 16, 18, 16, 20 },
 			{ 4, 4, 12, 12, 12, 16, 18, 16, 20 },
@@ -34,7 +34,7 @@
 			{ 12, 12, 20, 20, 20, 24, 26, 24, 28 }
 		};
 
-		static readonly int[,] EACyclesBW = new int[8, 8]
+		private static readonly int[,] EACyclesBW = new int[8, 8]
 		{
 			{ 0, 0, 0, 0, 0, 0, 0, 0 },
 			{ 0, 0, 0, 0, 0, 0, 0, 0 },
@@ -46,7 +46,7 @@
 			{ 8, 12, 8, 10, 4, 99, 99, 99 }
 		};
 
-		static readonly int[,] EACyclesL = new int[8, 8]
+		private static readonly int[,] EACyclesL = new int[8, 8]
 		{
 			{ 0, 0, 0, 0, 0, 0, 0, 0 },
 			{ 0, 0, 0, 0, 0, 0, 0, 0 },

src/BizHawk.Emulation.Cores/CPUs/HuC6280/CDLOpcodes.cs

@@ -2,7 +2,7 @@ namespace BizHawk.Emulation.Cores.Components.H6280
 {
 	public partial class HuC6280
 	{
-		void CDLOpcode()
+		private void CDLOpcode()
 		{
 			byte tmp8;
 			byte opcode = ReadMemory(PC);

src/BizHawk.Emulation.Cores/CPUs/HuC6280/HuC6280_CDL.cs

@@ -81,14 +81,14 @@ namespace BizHawk.Emulation.Cores.Components.H6280
 			CodeOperand = 0x80
 		}
 
-		void Mark(ushort addr, CDLUsage flag)
+		private void Mark(ushort addr, CDLUsage flag)
 		{
 			var m = Mappings[MPR[addr >> 13]];
 			CDL[m.Name][addr & 0x1fff | m.Offs] |= (byte)flag;
 		}
 
 		// mark addr as having been fetched for execute
-		void MarkCode(int addr_, int n)
+		private void MarkCode(int addr_, int n)
 		{
 			for (int i = 0; i < n; i++)
 			{
@@ -98,28 +98,28 @@ namespace BizHawk.Emulation.Cores.Components.H6280
 		}
 
 		// mark addr as having been seen as data
-		void MarkAddr(int addr_)
+		private void MarkAddr(int addr_)
 		{
 			ushort addr = (ushort)addr_;
 			Mark(addr, CDLUsage.Data);
 		}
 
 		// convert address to zero-page, then mark as data
-		void MarkZP(int addr_)
+		private void MarkZP(int addr_)
 		{
 			ushort addr = (ushort)(addr_ & 0xff | 0x2000);
 			Mark(addr, CDLUsage.Data);
 		}
 
 		// convert address to zero-page, then return the pointer stored there
-		ushort GetIndirect(int addr_)
+		private ushort GetIndirect(int addr_)
 		{
 			ushort addr = (ushort)(addr_ & 0xff | 0x2000);
 			return ReadWordPageWrap(addr);
 		}
 
 		// convert address to zero-page, then mark as pointer (two bytes)
-		void MarkZPPtr(int addr_)
+		private void MarkZPPtr(int addr_)
 		{
 			ushort addr = (ushort)(addr_ & 0xff | 0x2000);
 			ushort addr2 = (ushort)(addr & 0xff00 | (addr + 1) & 0x00ff);
@@ -128,14 +128,14 @@ namespace BizHawk.Emulation.Cores.Components.H6280
 		}
 
 		// mark address as destination data of an indirect pointer
-		void MarkIndirect(int addr_)
+		private void MarkIndirect(int addr_)
 		{
 			ushort addr = (ushort)addr_;
 			Mark(addr, CDLUsage.IndirectData);
 		}
 
 		// mark stack space
-		void MarkPush(int n)
+		private void MarkPush(int n)
 		{
 			for (int i = 0; i < n; i++)
 			{
@@ -144,7 +144,7 @@ namespace BizHawk.Emulation.Cores.Components.H6280
 			}
 		}
 
-		void MarkPop(int n)
+		private void MarkPop(int n)
 		{
 			for (int i = 0; i < n; i++)
 			{
@@ -154,7 +154,7 @@ namespace BizHawk.Emulation.Cores.Components.H6280
 		}
 
 		// mark addr as function pointer (2 bytes)
-		void MarkFptr(int addr_)
+		private void MarkFptr(int addr_)
 		{
 			ushort addr = (ushort)addr_;
 			ushort addr2 = (ushort)(addr & 0xff00 | (addr + 1) & 0x00ff);
@@ -163,14 +163,14 @@ namespace BizHawk.Emulation.Cores.Components.H6280
 		}
 
 		// block transfer "from"
-		void MarkBTFrom(int addr_)
+		private void MarkBTFrom(int addr_)
 		{
 			ushort addr = (ushort)addr_;
 			Mark(addr, CDLUsage.BlockXFer);
 		}
 
 		// block transfer "to"
-		void MarkBTTo(int addr_)
+		private void MarkBTTo(int addr_)
 		{
 			ushort addr = (ushort)addr_;
 			Mark(addr, CDLUsage.BlockXFer);

src/BizHawk.Emulation.Cores/CPUs/Intel8048/Disassembler.cs

@@ -6,7 +6,7 @@ namespace BizHawk.Emulation.Cores.Components.I8048
 {
 	public sealed partial class I8048
 	{
-		static readonly string[] table =
+		private static readonly string[] table =
 		{
 			"NOP", // 00
 			"???", // 01

src/BizHawk.Emulation.Cores/CPUs/Intel8048/Execute.cs

@@ -13,9 +13,9 @@ namespace BizHawk.Emulation.Cores.Components.I8048
 		public int IRQS;
 		public int irq_pntr;
 
-		ushort reg_d_ad;
+		private ushort reg_d_ad;
-		ushort reg_h_ad;
+		private ushort reg_h_ad;
-		ushort reg_l_ad;
+		private ushort reg_l_ad;
 
 		public void FetchInstruction(byte opcode)
 		{

src/BizHawk.Emulation.Cores/CPUs/LR35902/Execute.cs

@@ -20,7 +20,7 @@ namespace BizHawk.Emulation.Cores.Components.LR35902
 
 		// unsaved variables
 		public bool checker;
-		byte interrupt_src_reg, interrupt_enable_reg, buttons_pressed;
+		private byte interrupt_src_reg, interrupt_enable_reg, buttons_pressed;
 
 		public void BuildInstructionTable()
 		{

src/BizHawk.Emulation.Cores/CPUs/LR35902/LR35902.cs

@@ -779,7 +779,7 @@ namespace BizHawk.Emulation.Cores.Components.LR35902
 			};
 		}
 
-		void FetchInstruction(int op)
+		private void FetchInstruction(int op)
 		{
 			instr_pntr = 0;
 			

src/BizHawk.Emulation.Cores/CPUs/LR35902/NewDisassembler.cs

@@ -7,7 +7,7 @@ namespace BizHawk.Emulation.Cores.Components.LR35902
 	// adapted from the information at http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html
 	public sealed partial class LR35902
 	{
-		static readonly string[] table =
+		private static readonly string[] table =
 		{
 			"NOP", // 00
 			"LD   BC,d16", // 01

src/BizHawk.Emulation.Cores/CPUs/LR35902/Operations.cs

@@ -5,10 +5,10 @@ namespace BizHawk.Emulation.Cores.Components.LR35902
 	public partial class LR35902
 	{
 		// local variables for operations, not stated
-		int Reg16_d, Reg16_s, c;
+		private int Reg16_d, Reg16_s, c;
-		ushort ans, ans_l, ans_h, temp;
+		private ushort ans, ans_l, ans_h, temp;
-		byte a_d;
+		private byte a_d;
-		bool imm;
+		private bool imm;
 
 		public void Read_Func(ushort dest, ushort src_l, ushort src_h)
 		{

src/BizHawk.Emulation.Cores/CPUs/MC6800/Disassembler.cs

@@ -6,7 +6,7 @@ namespace BizHawk.Emulation.Cores.Components.MC6800
 {
 	public sealed partial class MC6800
 	{
-		static readonly string[] table =
+		private static readonly string[] table =
 		{
 			"???", // 00
 			"NOP", // 01

src/BizHawk.Emulation.Cores/CPUs/MC6800/Execute.cs

@@ -12,9 +12,9 @@ namespace BizHawk.Emulation.Cores.Components.MC6800
 		public int IRQS;
 		public int irq_pntr;
 
-		ushort reg_d_ad;
+		private ushort reg_d_ad;
-		ushort reg_h_ad;
+		private ushort reg_h_ad;
-		ushort reg_l_ad;
+		private ushort reg_l_ad;
 
 		public void FetchInstruction(byte opcode)
 		{

src/BizHawk.Emulation.Cores/CPUs/MC6809/Disassembler.cs

@@ -6,7 +6,7 @@ namespace BizHawk.Emulation.Cores.Components.MC6809
 {
 	public sealed partial class MC6809
 	{
-		static readonly string[] table =
+		private static readonly string[] table =
 		{
 			"NEG   DP+i8", // 00
 			"???", // 01
@@ -266,7 +266,7 @@ namespace BizHawk.Emulation.Cores.Components.MC6809
 			"ST    U,ex16", // ff
 		};
 
-		static readonly string[] table2 =
+		private static readonly string[] table2 =
 		{
 			"???", // 00
 			"???", // 01
@@ -526,7 +526,7 @@ namespace BizHawk.Emulation.Cores.Components.MC6809
 			"ST    SP,ex16", // ff
 		};
 
-		static readonly string[] table3 =
+		private static readonly string[] table3 =
 		{
 			"???", // 00
 			"???", // 01

src/BizHawk.Emulation.Cores/CPUs/MC6809/Execute.cs

@@ -12,9 +12,9 @@ namespace BizHawk.Emulation.Cores.Components.MC6809
 		public int IRQS;
 		public int irq_pntr;
 
-		ushort reg_d_ad;
+		private ushort reg_d_ad;
-		ushort reg_h_ad;
+		private ushort reg_h_ad;
-		ushort reg_l_ad;
+		private ushort reg_l_ad;
 
 		public void FetchInstruction(byte opcode)
 		{

src/BizHawk.Emulation.Cores/CPUs/W65816/Disassembler.cs

@@ -17,11 +17,11 @@ using BizHawk.Emulation.Common;
 
 namespace BizHawk.Emulation.Cores.Components.W65816
 {
-	class W65816_DisassemblerService : IDisassemblable
+	internal class W65816_DisassemblerService : IDisassemblable
 	{
 		public string Cpu { get; set; }
 
-		readonly W65816 disassemblerCpu = new W65816();
+		private readonly W65816 disassemblerCpu = new W65816();
 		
 		public IEnumerable<string> AvailableCpus
 		{
@@ -37,7 +37,7 @@ namespace BizHawk.Emulation.Cores.Components.W65816
 		}
 	}
 
-	class W65816
+	internal class W65816
 	{
 		//unsigned char *mem, unsigned long pos, unsigned char *flag, char *inst, unsigned char tsrc
 		//TODO - what ha ppens at the end of memory? make sure peek wraps around?

src/BizHawk.Emulation.Cores/CPUs/Z80A/NewDisassembler.cs

@@ -7,7 +7,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 {
 	public sealed partial class Z80A : IDisassemblable
 	{
-		static string Result(string format, Func<ushort, byte> read, ref ushort addr)
+		private static string Result(string format, Func<ushort, byte> read, ref ushort addr)
 		{
 			//d immediately succeeds the opcode
 			//n immediate succeeds the opcode and the displacement (if present)
@@ -26,7 +26,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			return format;
 		}
 
-		static readonly string[] mnemonics =
+		private static readonly string[] mnemonics =
 		{
 			"NOP", "LD BC, nn", "LD (BC), A", "INC BC", //0x04
 			"INC B", "DEC B", "LD B, n", "RLCA", //0x08
@@ -94,7 +94,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			"CALL M, nn", "[FD]", "CP n", "RST $38", //0x100
 		};
 
-		static readonly string[] mnemonicsDD =
+		private static readonly string[] mnemonicsDD =
 		{
 			"NOP", "LD BC, nn", "LD (BC), A", "INC BC", //0x04
 			"INC B", "DEC B", "LD B, n", "RLCA", //0x08
@@ -162,7 +162,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			"CALL M, nn", "[!!DD FD!!]", "CP n", "RST $38", //0x100
 		};
 
-		static readonly string[] mnemonicsFD =
+		private static readonly string[] mnemonicsFD =
 		{
 			"NOP", "LD BC, nn", "LD (BC), A", "INC BC", //0x04
 			"INC B", "DEC B", "LD B, n", "RLCA", //0x08
@@ -230,7 +230,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			"CALL M, nn", "[!FD FD!]", "CP n", "RST $38", //0x100
 		};
 
-		static readonly string[] mnemonicsDDCB =
+		private static readonly string[] mnemonicsDDCB =
 		{
 			"RLC (IX+d)->B", "RLC (IX+d)->C", "RLC (IX+d)->D", "RLC (IX+d)->E", "RLC (IX+d)->H", "RLC (IX+d)->L", "RLC (IX+d)", "RLC (IX+d)->A", 
 			"RRC (IX+d)->B", "RRC (IX+d)->C", "RRC (IX+d)->D", "RRC (IX+d)->E", "RRC (IX+d)->H", "RRC (IX+d)->L", "RRC (IX+d)", "RRC (IX+d)->A", 
@@ -266,7 +266,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			"SET 7 (IX+d)->B", "SET 7 (IX+d)->C", "SET 7 (IX+d)->D", "SET 7 (IX+d)->E", "SET 7 (IX+d)->H", "SET 7 (IX+d)->L", "SET 7 (IX+d)", "SET 7 (IX+d)->A", 
 		};
 
-		static readonly string[] mnemonicsFDCB =
+		private static readonly string[] mnemonicsFDCB =
 		{
 			"RLC (IY+d)->B", "RLC (IY+d)->C", "RLC (IY+d)->D", "RLC (IY+d)->E", "RLC (IY+d)->H", "RLC (IY+d)->L", "RLC (IY+d)", "RLC (IY+d)->A", 
 			"RRC (IY+d)->B", "RRC (IY+d)->C", "RRC (IY+d)->D", "RRC (IY+d)->E", "RRC (IY+d)->H", "RRC (IY+d)->L", "RRC (IY+d)", "RRC (IY+d)->A", 
@@ -302,7 +302,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			"SET 7 (IY+d)->B", "SET 7 (IY+d)->C", "SET 7 (IY+d)->D", "SET 7 (IY+d)->E", "SET 7 (IY+d)->H", "SET 7 (IY+d)->L", "SET 7 (IY+d)", "SET 7 (IY+d)->A", 
 		};
 
-		static readonly string[] mnemonicsCB =
+		private static readonly string[] mnemonicsCB =
 		{
 			"RLC B", "RLC C", "RLC D", "RLC E", "RLC H", "RLC L", "RLC (HL)", "RLC A", 
 			"RRC B", "RRC C", "RRC D", "RRC E", "RRC H", "RRC L", "RRC (HL)", "RRC A",
@@ -338,7 +338,7 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			"SET 7, B", "SET 7, C", "SET 7, D", "SET 7, E", "SET 7, H", "SET 7, L", "SET 7, (HL)", "SET 7, A",
 		};
 
-		static readonly string[] mnemonicsED =
+		private static readonly string[] mnemonicsED =
 		{
 			"NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", 
 			"NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", "NOP", 

src/BizHawk.Emulation.Cores/Computers/AmstradCPC/AmstradCPC.ISettable.cs

@@ -158,7 +158,7 @@ namespace BizHawk.Emulation.Cores.Computers.AmstradCPC
 			public string Media { get; set; }
 			public string OtherMisc { get; set; }
 
-			readonly Dictionary<string, string> Data = new Dictionary<string, string>();
+			private readonly Dictionary<string, string> Data = new Dictionary<string, string>();
 
 			public static CPCMachineMetaData GetMetaObject(MachineType type)
 			{

src/BizHawk.Emulation.Cores/Computers/AmstradCPC/Hardware/Display/CRTC6845.cs

@@ -1094,30 +1094,30 @@ namespace BizHawk.Emulation.Cores.Computers.AmstradCPC
 		}
 
 		/* persistent switch signals */
-		bool s_VS;
+		private bool s_VS;
-		bool s_HDISP;
+		private bool s_HDISP;
-		bool s_VDISP;
+		private bool s_VDISP;
-		bool s_HSYNC;
+		private bool s_HSYNC;
 
 		/* Other chip counters */
 		/// <summary>
 		/// Linear Address Generator counter latch
 		/// </summary>
-		int LAG_Counter_Latch;
+		private int LAG_Counter_Latch;
 
 		/// <summary>
 		/// Linear Address Generator row counter latch
 		/// </summary>
-		int LAG_Counter_RowLatch;
+		private int LAG_Counter_RowLatch;
 
 		/// <summary>
 		/// Linear Address Generator counter
 		/// </summary>
-		int LAG_Counter;
+		private int LAG_Counter;
 
-		int DISPTMG_Delay_Counter;
+		private int DISPTMG_Delay_Counter;
-		int CUDISP_Delay_Counter;
+		private int CUDISP_Delay_Counter;
-		int CUR_Field_Counter;
+		private int CUR_Field_Counter;
 
 		/// <summary>
 		/// Runs a generic CRTC cycle

src/BizHawk.Emulation.Cores/Computers/AmstradCPC/Machine/CPCBase.Input.cs

@@ -6,38 +6,38 @@
 	/// </summary>
 	public abstract partial class CPCBase
 	{
-		readonly string Play = "Play Tape";
+		private readonly string Play = "Play Tape";
-		readonly string Stop = "Stop Tape";
+		private readonly string Stop = "Stop Tape";
-		readonly string RTZ = "RTZ Tape";
+		private readonly string RTZ = "RTZ Tape";
-		readonly string Record = "Record Tape";
+		private readonly string Record = "Record Tape";
-		readonly string NextTape = "Insert Next Tape";
+		private readonly string NextTape = "Insert Next Tape";
-		readonly string PrevTape = "Insert Previous Tape";
+		private readonly string PrevTape = "Insert Previous Tape";
-		readonly string NextBlock = "Next Tape Block";
+		private readonly string NextBlock = "Next Tape Block";
-		readonly string PrevBlock = "Prev Tape Block";
+		private readonly string PrevBlock = "Prev Tape Block";
-		readonly string TapeStatus = "Get Tape Status";
+		private readonly string TapeStatus = "Get Tape Status";
 
-		readonly string NextDisk = "Insert Next Disk";
+		private readonly string NextDisk = "Insert Next Disk";
-		readonly string PrevDisk = "Insert Previous Disk";
+		private readonly string PrevDisk = "Insert Previous Disk";
-		readonly string EjectDisk = "Eject Current Disk";
+		private readonly string EjectDisk = "Eject Current Disk";
-		readonly string DiskStatus = "Get Disk Status";
+		private readonly string DiskStatus = "Get Disk Status";
 
-		readonly string HardResetStr = "Power";
+		private readonly string HardResetStr = "Power";
-		readonly string SoftResetStr = "Reset";
+		private readonly string SoftResetStr = "Reset";
 
-		bool pressed_Play = false;
+		private bool pressed_Play = false;
-		bool pressed_Stop = false;
+		private bool pressed_Stop = false;
-		bool pressed_RTZ = false;
+		private bool pressed_RTZ = false;
-		bool pressed_NextTape = false;
+		private bool pressed_NextTape = false;
-		bool pressed_PrevTape = false;
+		private bool pressed_PrevTape = false;
-		bool pressed_NextBlock = false;
+		private bool pressed_NextBlock = false;
-		bool pressed_PrevBlock = false;
+		private bool pressed_PrevBlock = false;
-		bool pressed_TapeStatus = false;
+		private bool pressed_TapeStatus = false;
-		bool pressed_NextDisk = false;
+		private bool pressed_NextDisk = false;
-		bool pressed_PrevDisk = false;
+		private bool pressed_PrevDisk = false;
-		bool pressed_EjectDisk = false;
+		private bool pressed_EjectDisk = false;
-		bool pressed_DiskStatus = false;
+		private bool pressed_DiskStatus = false;
-		bool pressed_HardReset = false;
+		private bool pressed_HardReset = false;
-		bool pressed_SoftReset = false;
+		private bool pressed_SoftReset = false;
 
 		/// <summary>
 		/// Cycles through all the input callbacks

src/BizHawk.Emulation.Cores/Computers/Commodore64/Media/D64.cs

@@ -7,7 +7,7 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Media
 {
 	public static class D64
 	{
-		const int D64_DISK_ID_OFFSET = 0x165A2; // track 18, sector 0, 0xA2
+		private const int D64_DISK_ID_OFFSET = 0x165A2; // track 18, sector 0, 0xA2
 
 		private enum ErrorType
 		{

src/BizHawk.Emulation.Cores/Computers/MSX/MSX.IEmulator.cs

@@ -170,7 +170,7 @@ namespace BizHawk.Emulation.Cores.Computers.MSX
 		public int[] Aud = new int [9000];
 		public uint num_samp;
 
-		const int blipbuffsize = 4500;
+		private const int blipbuffsize = 4500;
 
 		public bool CanProvideAsync => false;
 

src/BizHawk.Emulation.Cores/Computers/MSX/MSX.IMemoryDomains.cs

@@ -11,7 +11,7 @@ namespace BizHawk.Emulation.Cores.Computers.MSX
 		private readonly Dictionary<string, MemoryDomainByteArray> _byteArrayDomains = new Dictionary<string, MemoryDomainByteArray>();
 		private bool _memoryDomainsInit = false;
 
-		void SetupMemoryDomains()
+		private void SetupMemoryDomains()
 		{
 			var domains = new List<MemoryDomain>
 			{

src/BizHawk.Emulation.Cores/Computers/MSX/MSX.cs

@@ -100,8 +100,8 @@ namespace BizHawk.Emulation.Cores.Computers.MSX
 
 		}
 
-		IntPtr MSX_Pntr { get; set; } = IntPtr.Zero;
+		private IntPtr MSX_Pntr { get; set; } = IntPtr.Zero;
-		byte[] MSX_core = new byte[0x20000];
+		private byte[] MSX_core = new byte[0x20000];
 		public static byte[] Bios = null;
 		public static byte[] Basic;
 

src/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Machine/Pentagon128K/Pentagon128.Screen.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
 	/// <summary>
 	/// 128K/+2 ULA
 	/// </summary>
-	class ScreenPentagon128 : ULA
+	internal class ScreenPentagon128 : ULA
 	{
 		public ScreenPentagon128(SpectrumBase machine)
 			: base(machine)

src/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Machine/SpectrumBase.Input.cs

@@ -9,38 +9,38 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
 	/// </summary>
 	public abstract partial class SpectrumBase
 	{
-		readonly string Play = "Play Tape";
+		private readonly string Play = "Play Tape";
-		readonly string Stop = "Stop Tape";
+		private readonly string Stop = "Stop Tape";
-		readonly string RTZ = "RTZ Tape";
+		private readonly string RTZ = "RTZ Tape";
-		readonly string Record = "Record Tape";
+		private readonly string Record = "Record Tape";
-		readonly string NextTape = "Insert Next Tape";
+		private readonly string NextTape = "Insert Next Tape";
-		readonly string PrevTape = "Insert Previous Tape";
+		private readonly string PrevTape = "Insert Previous Tape";
-		readonly string NextBlock = "Next Tape Block";
+		private readonly string NextBlock = "Next Tape Block";
-		readonly string PrevBlock = "Prev Tape Block";
+		private readonly string PrevBlock = "Prev Tape Block";
-		readonly string TapeStatus = "Get Tape Status";
+		private readonly string TapeStatus = "Get Tape Status";
 
-		readonly string NextDisk = "Insert Next Disk";
+		private readonly string NextDisk = "Insert Next Disk";
-		readonly string PrevDisk = "Insert Previous Disk";
+		private readonly string PrevDisk = "Insert Previous Disk";
-		readonly string EjectDisk = "Eject Current Disk";
+		private readonly string EjectDisk = "Eject Current Disk";
-		readonly string DiskStatus = "Get Disk Status";
+		private readonly string DiskStatus = "Get Disk Status";
 
-		readonly string HardResetStr = "Power";
+		private readonly string HardResetStr = "Power";
-		readonly string SoftResetStr = "Reset";
+		private readonly string SoftResetStr = "Reset";
 
-		bool pressed_Play;
+		private bool pressed_Play;
-		bool pressed_Stop;
+		private bool pressed_Stop;
-		bool pressed_RTZ;
+		private bool pressed_RTZ;
-		bool pressed_NextTape;
+		private bool pressed_NextTape;
-		bool pressed_PrevTape;
+		private bool pressed_PrevTape;
-		bool pressed_NextBlock;
+		private bool pressed_NextBlock;
-		bool pressed_PrevBlock;
+		private bool pressed_PrevBlock;
-		bool pressed_TapeStatus;
+		private bool pressed_TapeStatus;
-		bool pressed_NextDisk;
+		private bool pressed_NextDisk;
-		bool pressed_PrevDisk;
+		private bool pressed_PrevDisk;
-		bool pressed_EjectDisk;
+		private bool pressed_EjectDisk;
-		bool pressed_DiskStatus;
+		private bool pressed_DiskStatus;
-		bool pressed_HardReset;
+		private bool pressed_HardReset;
-		bool pressed_SoftReset;
+		private bool pressed_SoftReset;
 
 		/// <summary>
 		/// Cycles through all the input callbacks

src/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Machine/ZXSpectrum128K/ZX128.Screen.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
 	/// <summary>
 	/// 128K/+2 ULA
 	/// </summary>
-	class Screen128 : ULA
+	internal class Screen128 : ULA
 	{
 		public Screen128(SpectrumBase machine)
 			: base(machine)

src/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Machine/ZXSpectrum128KPlus2a/ZX128Plus2a.Screen.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
 	/// <summary>
 	/// +2A/+3 ULA
 	/// </summary>
-	class Screen128Plus2a : ULA
+	internal class Screen128Plus2a : ULA
 	{
 		public Screen128Plus2a(SpectrumBase machine)
 			: base(machine)

src/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Machine/ZXSpectrum48K/ZX48.Screen.cs

@@ -4,7 +4,7 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
 	/// <summary>
 	/// 48K ULA
 	/// </summary>
-	class Screen48 : ULA
+	internal class Screen48 : ULA
 	{
 		public Screen48(SpectrumBase machine)
 			: base(machine)

src/BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/Maria.cs

@@ -9,7 +9,7 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 	{
 		public A7800Hawk Core { get; set; }
 
-		struct GFX_Object
+		private struct GFX_Object
 		{
 			public byte palette;
 			public byte width;
@@ -24,12 +24,12 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 
 		// technically there is no limit on the number of graphics objects, but since dma is automatically killed
 		// at the end of a scanline, we have an effective limit
-		readonly GFX_Object[] GFX_Objects = new GFX_Object[128];
+		private readonly GFX_Object[] GFX_Objects = new GFX_Object[128];
 
 		public byte[,] line_ram = new byte[2, 320];
-		byte temp_check = 0;
+		private byte temp_check = 0;
 
-		int GFX_index = 0;
+		private int GFX_index = 0;
 
 		public int[] _palette;
 		public int[] scanline_buffer = new int[320];
@@ -77,14 +77,14 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 		public bool zero_hole; // the first DMA hole does not save cycles
 
 		// variables for drawing a pixel
-		int color;
+		private int color;
-		int local_GFX_index;
+		private int local_GFX_index;
-		int temp_palette;
+		private int temp_palette;
-		int temp_bit_0;
+		private int temp_bit_0;
-		int temp_bit_1;
+		private int temp_bit_1;
-		int disp_mode;
+		private int disp_mode;
-		byte BG_latch_1;
+		private byte BG_latch_1;
-		int pixel;
+		private int pixel;
 
 		// each frame contains 263 scanlines
 		// each scanline consists of 113.5 CPU cycles (fast access) which equates to 454 Maria cycles

src/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs

@@ -235,7 +235,7 @@ namespace BizHawk.Emulation.Cores.ColecoVision
 			}
 		}
 
-		void RenderBackgroundM2(int scanLine)
+		private void RenderBackgroundM2(int scanLine)
 		{
 			if (DisplayOn == false)
 			{

src/BizHawk.Emulation.Cores/Consoles/Fairchild/ChannelF/F8/F3850.Disassembler.cs

@@ -9,7 +9,7 @@ namespace BizHawk.Emulation.Cores.Consoles.ChannelF
 	/// </summary>
 	public sealed partial class F3850 : IDisassemblable
 	{
-		static string Result(string format, Func<ushort, byte> read, ref ushort addr)
+		private static string Result(string format, Func<ushort, byte> read, ref ushort addr)
 		{
 			//d immediately succeeds the opcode
 			//n immediate succeeds the opcode and the displacement (if present)
@@ -35,7 +35,7 @@ namespace BizHawk.Emulation.Cores.Consoles.ChannelF
 		}
 
 
-		static readonly string[] mnemonics =
+		private static readonly string[] mnemonics =
 		{
 			"LR A, KU",			// 0x00
 			"LR A, KL",			// 0x01

src/BizHawk.Emulation.Cores/Consoles/GCE/Vectrex/VectrexHawk.IEmulator.cs

@@ -8,7 +8,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Vectrex
 
 		public ControllerDefinition ControllerDefinition => _controllerDeck.Definition;
 
-		byte joy1_LR, joy2_LR, joy1_UD, joy2_UD;
+		private byte joy1_LR, joy2_LR, joy1_UD, joy2_UD;
 
 		public bool FrameAdvance(IController controller, bool render, bool rendersound)
 		{

src/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/O2Hawk.ICodeDataLog.cs

@@ -44,7 +44,7 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 			_cdl[type][cdladdr] |= (byte)flags;
 		}
 
-		void CDLCpuCallback(ushort addr, I8048.eCDLogMemFlags flags)
+		private void CDLCpuCallback(ushort addr, I8048.eCDLogMemFlags flags)
 		{
 
 			if (addr < 0x400)

src/BizHawk.Emulation.Cores/Consoles/Magnavox/Odyssey2/PPU.cs

@@ -53,11 +53,11 @@ namespace BizHawk.Emulation.Cores.Consoles.O2Hawk
 		public int LY_ret;
 
 		// local variables not stated
-		int current_pixel_offset;
+		private int current_pixel_offset;
-		int double_size;
+		private int double_size;
-		int right_shift;
+		private int right_shift;
-		int right_shift_even;
+		private int right_shift_even;
-		int x_base;
+		private int x_base;
 
 		public virtual byte ReadReg(int addr)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/LibmGBA.cs

@@ -35,7 +35,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 			return ret;
 		}
 
-		const CallingConvention cc = CallingConvention.Cdecl;
+		private const CallingConvention cc = CallingConvention.Cdecl;
 
 		public enum SaveType : int
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.ICodeDataLog.cs

@@ -44,7 +44,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 			_cdl[type][cdladdr] |= (byte)flags;
 		}
 
-		void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
+		private void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
 		{
 			if (addr < 0x8000)
 			{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/Mappers/Mapper_Sachen_MMC1.cs

@@ -10,7 +10,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 	// this occurs when the Boot Rom is loading the nintendo logo into VRAM
 	// instead of tracking that in the main memory map where it will just slow things down for no reason
 	// we'll clear the 'locked' flag when the last byte of the logo is read
-	class MapperSachen1 : MapperBase
+	internal class MapperSachen1 : MapperBase
 	{
 		public int ROM_bank;
 		public bool locked;

src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/Mappers/Mapper_Sachen_MMC2.cs

@@ -10,7 +10,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 	// this occurs when the Boot Rom is loading the nintendo logo into VRAM
 	// instead of tracking that in the main memory map where it will just slow things down for no reason
 	// we'll clear the 'locked' flag when the last byte of the logo is read
-	class MapperSachen2 : MapperBase
+	internal class MapperSachen2 : MapperBase
 	{
 		public int ROM_bank;
 		public bool locked, locked_GBC, finished;

src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.ICodeDataLog.cs

@@ -45,7 +45,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink
 			_cdl[type][cdladdr] |= (byte)flags;
 		}
 
-		void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
+		private void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
 		{
 			if (addr < 0x8000)
 			{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink3x/GBHawkLink3x.ICodeDataLog.cs

@@ -45,7 +45,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink3x
 			_cdl[type][cdladdr] |= (byte)flags;
 		}
 
-		void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
+		private void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
 		{
 			if (addr < 0x8000)
 			{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink4x/GBHawkLink4x.ICodeDataLog.cs

@@ -45,7 +45,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink4x
 			_cdl[type][cdladdr] |= (byte)flags;
 		}
 
-		void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
+		private void CDLCpuCallback(ushort addr, LR35902.eCDLogMemFlags flags)
 		{
 			if (addr < 0x8000)
 			{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/Gambatte.cs

@@ -436,7 +436,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			}
 		}
 
-		GambattePrinter printer;
+		private GambattePrinter printer;
 
 		/// <summary>
 		/// set up Printer callback
@@ -462,8 +462,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			}
 		}
 
-		LibGambatte.ScanlineCallback scanlinecb;
+		private LibGambatte.ScanlineCallback scanlinecb;
-		ScanlineCallback endofframecallback;
+		private ScanlineCallback endofframecallback;
 
 		/// <summary>
 		/// update gambatte core's internal colors

src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/GambatteLink.cs

@@ -73,7 +73,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 		// if true, the link cable toggle signal is currently asserted
 		private bool _cablediscosignal = false;
 
-		const int SampPerFrame = 35112;
+		private const int SampPerFrame = 35112;
 
 		private readonly SaveController LCont = new SaveController(Gameboy.GbController);
 		private readonly SaveController RCont = new SaveController(Gameboy.GbController);

src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/GambattePrinter.cs

@@ -11,7 +11,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 	{
 		// A loose c->c# port of SameBoy's printer code
 
-		enum CommandState : byte
+		private enum CommandState : byte
 		{
 			GB_PRINTER_COMMAND_MAGIC1,
 			GB_PRINTER_COMMAND_MAGIC2,
@@ -25,7 +25,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			GB_PRINTER_COMMAND_ACTIVE,
 			GB_PRINTER_COMMAND_STATUS,
 		}
-		enum CommandID : byte
+
+		private enum CommandID : byte
 		{
 			GB_PRINTER_INIT_COMMAND = 1,
 			GB_PRINTER_START_COMMAND = 2,
@@ -33,30 +34,30 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			GB_PRINTER_NOP_COMMAND = 0xF,
 		}
 
-		const int GB_PRINTER_MAX_COMMAND_LENGTH = 0x280;
+		private const int GB_PRINTER_MAX_COMMAND_LENGTH = 0x280;
-		const int GB_PRINTER_DATA_SIZE = 0x280;
+		private const int GB_PRINTER_DATA_SIZE = 0x280;
 
-		const ushort SerialIRQAddress = 0x58;
+		private const ushort SerialIRQAddress = 0x58;
 
-		readonly Gameboy gb;
+		private readonly Gameboy gb;
-		readonly PrinterCallback callback;
+		private readonly PrinterCallback callback;
-		LibGambatte.LinkCallback linkCallback;
+		private LibGambatte.LinkCallback linkCallback;
 
-		CommandState command_state;
+		private CommandState command_state;
-		CommandID command_id;
+		private CommandID command_id;
 
-		bool compression;
+		private bool compression;
-		ushort length_left;
+		private ushort length_left;
-		readonly byte[] command_data = new byte[GB_PRINTER_MAX_COMMAND_LENGTH];
+		private readonly byte[] command_data = new byte[GB_PRINTER_MAX_COMMAND_LENGTH];
-		ushort command_length;
+		private ushort command_length;
-		ushort checksum;
+		private ushort checksum;
-		byte status;
+		private byte status;
 
-		readonly byte[] image = new byte[160 * 200];
+		private readonly byte[] image = new byte[160 * 200];
-		ushort image_offset;
+		private ushort image_offset;
 
-		byte compression_run_lenth;
+		private byte compression_run_lenth;
-		bool compression_run_is_compressed;
+		private bool compression_run_is_compressed;
 
 		public GambattePrinter(Gameboy gb, PrinterCallback callback)
 		{
@@ -76,7 +77,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 				LibGambatte.gambatte_setlinkcallback(gb.GambatteState, null);
 		}
 
-		void OnSerial()
+		private void OnSerial()
 		{
 			if (LibGambatte.gambatte_linkstatus(gb.GambatteState, 256) != 0) // ClockTrigger
 			{
@@ -87,7 +88,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			}
 		}
 
-		byte HandleSerial(byte byte_received)
+		private byte HandleSerial(byte byte_received)
 		{
 			byte byte_to_send = 0;
 
@@ -228,7 +229,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			return byte_to_send;
 		}
 
-		void HandleCommand()
+		private void HandleCommand()
 		{
 			switch (command_id)
 			{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/N64/N64Audio.cs

@@ -4,7 +4,7 @@ using BizHawk.Emulation.Cores.Nintendo.N64.NativeApi;
 
 namespace BizHawk.Emulation.Cores.Nintendo.N64
 {
-	class N64Audio : IDisposable
+	internal class N64Audio : IDisposable
 	{
 		/// <summary>
 		/// mupen64 DLL Api

src/BizHawk.Emulation.Cores/Consoles/Nintendo/N64/NativeApi/mupen64plusAudioApi.cs

@@ -3,7 +3,7 @@ using System.Runtime.InteropServices;
 
 namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 {
-	class mupen64plusAudioApi
+	internal class mupen64plusAudioApi
 	{
 		/// <summary>
 		/// Handle to native audio plugin
@@ -16,7 +16,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <returns>The size of the mupen64plus audio buffer</returns>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate int GetBufferSize();
-		readonly GetBufferSize dllGetBufferSize;
+
+		private readonly GetBufferSize dllGetBufferSize;
 
 		/// <summary>
 		/// Gets the audio buffer from mupen64plus, and then clears it
@@ -24,7 +25,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="dest">The buffer to fill with samples</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate void ReadAudioBuffer(short[] dest);
-		readonly ReadAudioBuffer dllReadAudioBuffer;
+
+		private readonly ReadAudioBuffer dllReadAudioBuffer;
 
 		/// <summary>
 		/// Gets the current audio rate from mupen64plus
@@ -32,7 +34,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <returns>The current audio rate</returns>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate int GetAudioRate();
-		readonly GetAudioRate dllGetAudioRate;
+
+		private readonly GetAudioRate dllGetAudioRate;
 
 		/// <summary>
 		/// Loads native functions and attaches itself to the core

src/BizHawk.Emulation.Cores/Consoles/Nintendo/N64/NativeApi/mupen64plusCoreApi.cs

@@ -15,18 +15,18 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		// Only left in because api needs to know the number of frames passed
 		// because of a bug
 		private readonly N64 bizhawkCore;
-		static mupen64plusApi AttachedCore = null;
+		private static mupen64plusApi AttachedCore = null;
 
-		bool disposed = false;
+		private bool disposed = false;
 
-		readonly Thread m64pEmulator;
+		private readonly Thread m64pEmulator;
 
-		readonly AutoResetEvent m64pEvent = new AutoResetEvent(false);
+		private readonly AutoResetEvent m64pEvent = new AutoResetEvent(false);
-		AutoResetEvent m64pContinueEvent = new AutoResetEvent(false);
+		private AutoResetEvent m64pContinueEvent = new AutoResetEvent(false);
-		readonly ManualResetEvent m64pStartupComplete = new ManualResetEvent(false);
+		private readonly ManualResetEvent m64pStartupComplete = new ManualResetEvent(false);
 
-		bool event_frameend = false;
+		private bool event_frameend = false;
-		bool event_breakpoint = false;
+		private bool event_breakpoint = false;
 
 		public enum m64p_error
 		{
@@ -181,15 +181,17 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="context2">Use ""</param>
 		/// <param name="dummy">Use IntPtr.Zero</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreStartup(int APIVersion, string ConfigPath, string DataPath, string Context, DebugCallback DebugCallback, string context2, IntPtr dummy);
+		private delegate m64p_error CoreStartup(int APIVersion, string ConfigPath, string DataPath, string Context, DebugCallback DebugCallback, string context2, IntPtr dummy);
-		CoreStartup m64pCoreStartup;
+
+		private CoreStartup m64pCoreStartup;
 
 		/// <summary>
 		/// Cleans up the core
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreShutdown();
+		private delegate m64p_error CoreShutdown();
-		CoreShutdown m64pCoreShutdown;
+
+		private CoreShutdown m64pCoreShutdown;
 
 		/// <summary>
 		/// Connects a plugin DLL to the core DLL
@@ -197,16 +199,18 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="PluginType">The type of plugin that is being connected</param>
 		/// <param name="PluginLibHandle">The DLL handle for the plugin</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreAttachPlugin(m64p_plugin_type PluginType, IntPtr PluginLibHandle);
+		private delegate m64p_error CoreAttachPlugin(m64p_plugin_type PluginType, IntPtr PluginLibHandle);
-		CoreAttachPlugin m64pCoreAttachPlugin;
+
+		private CoreAttachPlugin m64pCoreAttachPlugin;
 
 		/// <summary>
 		/// Disconnects a plugin DLL from the core DLL
 		/// </summary>
 		/// <param name="PluginType">The type of plugin to be disconnected</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreDetachPlugin(m64p_plugin_type PluginType);
+		private delegate m64p_error CoreDetachPlugin(m64p_plugin_type PluginType);
-		CoreDetachPlugin m64pCoreDetachPlugin;
+
+		private CoreDetachPlugin m64pCoreDetachPlugin;
 
 		/// <summary>
 		/// Opens a section in the global config system
@@ -214,8 +218,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="SectionName">The name of the section to open</param>
 		/// <param name="ConfigSectionHandle">A pointer to the pointer to use as the section handle</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error ConfigOpenSection(string SectionName, ref IntPtr ConfigSectionHandle);
+		private delegate m64p_error ConfigOpenSection(string SectionName, ref IntPtr ConfigSectionHandle);
-		ConfigOpenSection m64pConfigOpenSection;
+
+		private ConfigOpenSection m64pConfigOpenSection;
 
 		/// <summary>
 		/// Sets a parameter in the global config system
@@ -225,8 +230,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="ParamType">The type of the parameter</param>
 		/// <param name="ParamValue">A pointer to the value to use for the parameter (must be an int right now)</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error ConfigSetParameter(IntPtr ConfigSectionHandle, string ParamName, m64p_type ParamType, ref int ParamValue);
+		private delegate m64p_error ConfigSetParameter(IntPtr ConfigSectionHandle, string ParamName, m64p_type ParamType, ref int ParamValue);
-		ConfigSetParameter m64pConfigSetParameter;
+
+		private ConfigSetParameter m64pConfigSetParameter;
 
 		/// <summary>
 		/// Sets a parameter in the global config system
@@ -236,24 +242,27 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="ParamType">The type of the parameter</param>
 		/// <param name="ParamValue">A pointer to the value to use for the parameter (must be a string)</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error ConfigSetParameterStr(IntPtr ConfigSectionHandle, string ParamName, m64p_type ParamType, StringBuilder ParamValue);
+		private delegate m64p_error ConfigSetParameterStr(IntPtr ConfigSectionHandle, string ParamName, m64p_type ParamType, StringBuilder ParamValue);
-		ConfigSetParameterStr m64pConfigSetParameterStr;
+
+		private ConfigSetParameterStr m64pConfigSetParameterStr;
 
 		/// <summary>
 		/// Saves the mupen64plus state to the provided buffer
 		/// </summary>
 		/// <param name="buffer">A byte array to use to save the state. Must be at least 16788288 + 1024 bytes</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate int savestates_save_bkm(byte[] buffer);
+		private delegate int savestates_save_bkm(byte[] buffer);
-		savestates_save_bkm m64pCoreSaveState;
+
+		private savestates_save_bkm m64pCoreSaveState;
 
 		/// <summary>
 		/// Loads the mupen64plus state from the provided buffer
 		/// </summary>
 		/// <param name="buffer">A byte array filled with the state to load. Must be at least 16788288 + 1024 bytes</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate int savestates_load_bkm(byte[] buffer);
+		private delegate int savestates_load_bkm(byte[] buffer);
-		savestates_load_bkm m64pCoreLoadState;
+
+		private savestates_load_bkm m64pCoreLoadState;
 
 		/// <summary>
 		/// Gets a pointer to a section of the mupen64plus core
@@ -261,8 +270,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="mem_ptr_type">The section to get a pointer for</param>
 		/// <returns>A pointer to the section requested</returns>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate IntPtr DebugMemGetPointer(N64_MEMORY mem_ptr_type);
+		private delegate IntPtr DebugMemGetPointer(N64_MEMORY mem_ptr_type);
-		DebugMemGetPointer m64pDebugMemGetPointer;
+
+		private DebugMemGetPointer m64pDebugMemGetPointer;
 
 		/// <summary>
 		/// Gets the size of the given memory area
@@ -270,51 +280,61 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="mem_ptr_type">The section to get the size of</param>
 		/// <returns>The size of the section requested</returns>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate int MemGetSize(N64_MEMORY mem_ptr_type);
+		private delegate int MemGetSize(N64_MEMORY mem_ptr_type);
-		MemGetSize m64pMemGetSize;
+
+		private MemGetSize m64pMemGetSize;
 
 		/// <summary>
 		/// Initializes the saveram (eeprom and 4 mempacks)
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate IntPtr init_saveram();
+		private delegate IntPtr init_saveram();
-		init_saveram m64pinit_saveram;
+
+		private init_saveram m64pinit_saveram;
 
 		/// <summary>
 		/// Pulls out the saveram for bizhawk to save
 		/// </summary>
 		/// <param name="dest">A byte array to save the saveram into</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate IntPtr save_saveram(byte[] dest);
+		private delegate IntPtr save_saveram(byte[] dest);
-		save_saveram m64psave_saveram;
+
+		private save_saveram m64psave_saveram;
 
 		/// <summary>
 		/// Restores the saveram from bizhawk
 		/// </summary>
 		/// <param name="src">A byte array containing the saveram to restore</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate IntPtr load_saveram(byte[] src);
+		private delegate IntPtr load_saveram(byte[] src);
-		load_saveram m64pload_saveram;
+
+		private load_saveram m64pload_saveram;
 
 		// The last parameter of CoreDoCommand is actually a void pointer, so instead we'll make a few delegates for the versions we want to use
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreDoCommandByteArray(m64p_command Command, int ParamInt, byte[] ParamPtr);
+		private delegate m64p_error CoreDoCommandByteArray(m64p_command Command, int ParamInt, byte[] ParamPtr);
-		CoreDoCommandByteArray m64pCoreDoCommandByteArray;
+
+		private CoreDoCommandByteArray m64pCoreDoCommandByteArray;
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreDoCommandPtr(m64p_command Command, int ParamInt, IntPtr ParamPtr);
+		private delegate m64p_error CoreDoCommandPtr(m64p_command Command, int ParamInt, IntPtr ParamPtr);
-		CoreDoCommandPtr m64pCoreDoCommandPtr;
+
+		private CoreDoCommandPtr m64pCoreDoCommandPtr;
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreDoCommandRefInt(m64p_command Command, int ParamInt, ref int ParamPtr);
+		private delegate m64p_error CoreDoCommandRefInt(m64p_command Command, int ParamInt, ref int ParamPtr);
-		CoreDoCommandRefInt m64pCoreDoCommandRefInt;
+
+		private CoreDoCommandRefInt m64pCoreDoCommandRefInt;
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreDoCommandFrameCallback(m64p_command Command, int ParamInt, FrameCallback ParamPtr);
+		private delegate m64p_error CoreDoCommandFrameCallback(m64p_command Command, int ParamInt, FrameCallback ParamPtr);
-		CoreDoCommandFrameCallback m64pCoreDoCommandFrameCallback;
+
+		private CoreDoCommandFrameCallback m64pCoreDoCommandFrameCallback;
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreDoCommandVICallback(m64p_command Command, int ParamInt, VICallback ParamPtr);
+		private delegate m64p_error CoreDoCommandVICallback(m64p_command Command, int ParamInt, VICallback ParamPtr);
-		CoreDoCommandVICallback m64pCoreDoCommandVICallback;
+
+		private CoreDoCommandVICallback m64pCoreDoCommandVICallback;
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error CoreDoCommandRenderCallback(m64p_command Command, int ParamInt, RenderCallback ParamPtr);
+		private delegate m64p_error CoreDoCommandRenderCallback(m64p_command Command, int ParamInt, RenderCallback ParamPtr);
-		CoreDoCommandRenderCallback m64pCoreDoCommandRenderCallback;
+
+		private CoreDoCommandRenderCallback m64pCoreDoCommandRenderCallback;
 
 		//WARNING - RETURNS A STATIC BUFFER
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
@@ -366,21 +386,24 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void FrameCallback();
-		FrameCallback m64pFrameCallback;
+
+		private FrameCallback m64pFrameCallback;
 
 		/// <summary>
 		/// This will be called every time a VI occurs
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void VICallback();
-		VICallback m64pVICallback;
+
+		private VICallback m64pVICallback;
 
 		/// <summary>
 		/// This will be called every time before the screen is drawn
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void RenderCallback();
-		RenderCallback m64pRenderCallback;
+
+		private RenderCallback m64pRenderCallback;
 
 		/// <summary>
 		/// This will be called after the emulator is setup and is ready to be used
@@ -399,28 +422,32 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void SetTraceCallback(TraceCallback callback);
-		SetTraceCallback m64pSetTraceCallback;
+
+		private SetTraceCallback m64pSetTraceCallback;
 
 		/// <summary>
 		/// Gets the CPU registers
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void GetRegisters(byte[] dest);
-		GetRegisters m64pGetRegisters;
+
+		private GetRegisters m64pGetRegisters;
 
 		/// <summary>
 		/// This will be called when the debugger is initialized
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void DebugInitCallback();
-		DebugInitCallback m64pDebugInitCallback;
+
+		private DebugInitCallback m64pDebugInitCallback;
 
 		/// <summary>
 		/// This will be called when the debugger hits a breakpoint or executes one instruction in stepping mode
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void DebugUpdateCallback(int bpt);
-		DebugUpdateCallback m64pDebugUpdateCallback;
+
+		private DebugUpdateCallback m64pDebugUpdateCallback;
 
 		/// <summary>
 		/// This will be called during each vertical interrupt
@@ -432,43 +459,49 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		///  Sets the debug callbacks
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error DebugSetCallbacks(DebugInitCallback initCallback, DebugUpdateCallback updateCallback, DebugVICallback viCallback);
+		private delegate m64p_error DebugSetCallbacks(DebugInitCallback initCallback, DebugUpdateCallback updateCallback, DebugVICallback viCallback);
-		DebugSetCallbacks m64pDebugSetCallbacks;
+
+		private DebugSetCallbacks m64pDebugSetCallbacks;
 
 		/// <summary>
 		/// This function searches through all current breakpoints in the debugger to find one that matches the given input parameters.
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate int DebugBreakpointLookup(uint address, uint size, uint flags);
+		private delegate int DebugBreakpointLookup(uint address, uint size, uint flags);
-		DebugBreakpointLookup m64pDebugBreakpointLookup;
+
+		private DebugBreakpointLookup m64pDebugBreakpointLookup;
 
 		/// <summary>
 		/// This function is used to process common breakpoint commands, such as adding, removing, or searching the breakpoints
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate int DebugBreakpointCommand(m64p_dbg_bkp_command command, uint index, ref m64p_breakpoint bkp);
+		private delegate int DebugBreakpointCommand(m64p_dbg_bkp_command command, uint index, ref m64p_breakpoint bkp);
-		DebugBreakpointCommand m64pDebugBreakpointCommand;
+
+		private DebugBreakpointCommand m64pDebugBreakpointCommand;
 
 		/// <summary>
 		/// Gets a debugger state variable
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate int DebugGetState(m64p_dbg_state statenum);
+		private delegate int DebugGetState(m64p_dbg_state statenum);
-		DebugGetState m64pDebugGetState;
+
+		private DebugGetState m64pDebugGetState;
 
 		/// <summary>
 		/// Sets the runstate of the emulator
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error DebugSetRunState(m64p_dbg_runstate runstate);
+		private delegate m64p_error DebugSetRunState(m64p_dbg_runstate runstate);
-		DebugSetRunState m64pDebugSetRunState;
+
+		private DebugSetRunState m64pDebugSetRunState;
 
 		/// <summary>
 		/// Continues execution
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate m64p_error DebugStep();
+		private delegate m64p_error DebugStep();
-		DebugStep m64pDebugStep;
+
+		private DebugStep m64pDebugStep;
 
 		private readonly DynamicLibraryImportResolver Library = new DynamicLibraryImportResolver(OSTailoredCode.IsUnixHost ? "libmupen64plus.so.2" : "mupen64plus.dll");
 
@@ -542,7 +575,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 			AttachedCore = this;
 		}
 
-		volatile bool emulator_running = false;
+		private volatile bool emulator_running = false;
 
 		public bool IsCrashed => !emulator_running;
 
@@ -577,7 +610,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <summary>
 		/// Look up function pointers in the dlls
 		/// </summary>
-		void connectFunctionPointers()
+		private void connectFunctionPointers()
 		{
 			T GetCoreDelegate<T>(string proc) where T : Delegate => (T) Marshal.GetDelegateForFunctionPointer(Library.GetProcAddrOrThrow(proc), typeof(T));
 
@@ -835,7 +868,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 			m64pCoreLoadState(buffer);
 		}
 
-		byte[] saveram_backup;
+		private byte[] saveram_backup;
 
 		public void InitSaveram()
 		{
@@ -973,13 +1006,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 
 		private static readonly FieldInfo fiDLIRInternalPtr = typeof(DynamicLibraryImportResolver).GetField("_p", BindingFlags.Instance | BindingFlags.NonPublic);
 
-		struct AttachedPlugin
+		private struct AttachedPlugin
 		{
 			public DynamicLibraryImportResolver dllThinWrapper;
 			public PluginShutdown dllShutdown;
 		}
 
-		readonly Dictionary<m64p_plugin_type, AttachedPlugin> plugins = new Dictionary<m64p_plugin_type, AttachedPlugin>();
+		private readonly Dictionary<m64p_plugin_type, AttachedPlugin> plugins = new Dictionary<m64p_plugin_type, AttachedPlugin>();
 
 		public IntPtr AttachPlugin(m64p_plugin_type type, string PluginName)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/N64/NativeApi/mupen64plusInputApi.cs

@@ -3,9 +3,9 @@ using System.Runtime.InteropServices;
 
 namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 {
-	class mupen64plusInputApi
+	internal class mupen64plusInputApi
 	{
-		IntPtr InpDll;
+		private IntPtr InpDll;
 
 		/// <summary>
 		/// Sets a callback to use when the mupen core wants controller buttons
@@ -13,18 +13,21 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="inputCallback">The delegate to use</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate void SetInputCallback(InputCallback inputCallback);
-		readonly SetInputCallback InpSetInputCallback;
+
+		private readonly SetInputCallback InpSetInputCallback;
 
 		/// <summary>
 		/// Callback to use when mupen64plus wants input
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate int InputCallback(int i);
-		InputCallback InpInputCallback;
+
+		private InputCallback InpInputCallback;
 
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate mupen64plusApi.m64p_error SetRumbleCallback(RumbleCallback ParamPtr);
+		private delegate mupen64plusApi.m64p_error SetRumbleCallback(RumbleCallback ParamPtr);
-		SetRumbleCallback InpSetRumbleCallback;
+
+		private SetRumbleCallback InpSetRumbleCallback;
 
 		/// <summary>
 		/// This will be called every time the N64 changes
@@ -32,7 +35,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// </summary>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void RumbleCallback(int Control, int on);
-		RumbleCallback m64pRumbleCallback;
+
+		private RumbleCallback m64pRumbleCallback;
 
 		/// <summary>
 		/// Sets the controller pak type
@@ -41,7 +45,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="type">Type id according to (well documented... hurr hurr) mupen api</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void SetControllerPakType(int controller, int type);
-		readonly SetControllerPakType InpSetControllerPakType;
+
+		private readonly SetControllerPakType InpSetControllerPakType;
 
 		/// <summary>
 		/// Connects and disconnects controllers
@@ -49,13 +54,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="controller">Controller id</param>
 		/// <param name="connected">1 if controller should be connected, 0 if controller should be disconnected</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate void SetControllerConnected(int controller, int connected);
+		private delegate void SetControllerConnected(int controller, int connected);
-		readonly SetControllerConnected InpSetControllerConnected;
+
+		private readonly SetControllerConnected InpSetControllerConnected;
 
 		/// <summary>
 		/// Event fired when mupen changes rumble pak status
 		/// </summary>
-		event RumbleCallback OnRumbleChange;
+		private event RumbleCallback OnRumbleChange;
 
 		public mupen64plusInputApi(mupen64plusApi core)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/N64/NativeApi/mupen64plusVideoApi.cs

@@ -5,9 +5,9 @@ using BizHawk.Common;
 
 namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 {
-	class mupen64plusVideoApi
+	internal class mupen64plusVideoApi
 	{
-		IntPtr GfxDll;
+		private IntPtr GfxDll;
 
 		/// <summary>
 		/// Fills a provided buffer with the mupen64plus framebuffer
@@ -18,7 +18,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="buffer">Which buffer to read: 0 = front, 1 = back</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate void ReadScreen2(int[] framebuffer, ref int width, ref int height, int buffer);
-		readonly ReadScreen2 GFXReadScreen2;
+
+		private readonly ReadScreen2 GFXReadScreen2;
 
 		/// <summary>
 		/// Gets the width and height of the mupen64plus framebuffer
@@ -29,11 +30,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.N64.NativeApi
 		/// <param name="buffer">Which buffer to read: 0 = front, 1 = back</param>
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate void ReadScreen2Res(IntPtr dummy, ref int width, ref int height, int buffer);
-		readonly ReadScreen2Res GFXReadScreen2Res;
+
+		private readonly ReadScreen2Res GFXReadScreen2Res;
 
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate int GetScreenTextureID();
-		GetScreenTextureID GFXGetScreenTextureID;
+
+		private GetScreenTextureID GFXGetScreenTextureID;
 
 		public mupen64plusVideoApi(mupen64plusApi core, VideoPluginSettings settings)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NDS/MelonDS.cs

@@ -57,7 +57,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.NDS
 
 		// debug path/build for easier testing
 		//const string dllPath = "../../MelonDS/build/libmelonDS.dll";
-		const string dllPath = "dll/libmelonDS.dll";
+		private const string dllPath = "dll/libmelonDS.dll";
 
 		[DllImport(dllPath)]
 		private static extern bool Init();

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NDS/MelonDS_MemoryDomains.cs

@@ -9,7 +9,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.NDS
 {
 	unsafe partial class MelonDS : IMemoryDomains
 	{
-		SortedList<string, MemoryDomain> domains;
+		private SortedList<string, MemoryDomain> domains;
 
 		private void InitMemoryDomains()
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/APU.cs

@@ -26,7 +26,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 		public bool recalculate = false;
 
-		readonly NES nes;
+		private readonly NES nes;
 		public APU(NES nes, APU old, bool pal)
 		{
 			this.nes = nes;
@@ -43,25 +43,29 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		static readonly int[] DMC_RATE_NTSC = { 428, 380, 340, 320, 286, 254, 226, 214, 190, 160, 142, 128, 106, 84, 72, 54 };
+		private static readonly int[] DMC_RATE_NTSC = { 428, 380, 340, 320, 286, 254, 226, 214, 190, 160, 142, 128, 106, 84, 72, 54 };
-		static readonly int[] DMC_RATE_PAL = { 398, 354, 316, 298, 276, 236, 210, 198, 176, 148, 132, 118, 98, 78, 66, 50 };
+		private static readonly int[] DMC_RATE_PAL = { 398, 354, 316, 298, 276, 236, 210, 198, 176, 148, 132, 118, 98, 78, 66, 50 };
-		static readonly int[] LENGTH_TABLE = { 10, 254, 20, 2, 40, 4, 80, 6, 160, 8, 60, 10, 14, 12, 26, 14, 12, 16, 24, 18, 48, 20, 96, 22, 192, 24, 72, 26, 16, 28, 32, 30 };
+		private static readonly int[] LENGTH_TABLE = { 10, 254, 20, 2, 40, 4, 80, 6, 160, 8, 60, 10, 14, 12, 26, 14, 12, 16, 24, 18, 48, 20, 96, 22, 192, 24, 72, 26, 16, 28, 32, 30 };
-		static readonly byte[,] PULSE_DUTY = {
+
+		private static readonly byte[,] PULSE_DUTY = {
 			{0,1,0,0,0,0,0,0}, // (12.5%)
 			{0,1,1,0,0,0,0,0}, // (25%)
 			{0,1,1,1,1,0,0,0}, // (50%)
 			{1,0,0,1,1,1,1,1}, // (25% negated (75%))
 		};
-		static readonly byte[] TRIANGLE_TABLE =
+
+		private static readonly byte[] TRIANGLE_TABLE =
 		{
 			15, 14, 13, 12, 11, 10,  9,  8,  7,  6,  5,  4,  3,  2,  1,  0,
 			0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15
 		};
-		static readonly int[] NOISE_TABLE_NTSC =
+
+		private static readonly int[] NOISE_TABLE_NTSC =
 		{
 			4, 8, 16, 32, 64, 96, 128, 160, 202, 254, 380, 508, 762, 1016, 2034, 4068
 		};
-		static readonly int[] NOISE_TABLE_PAL =
+
+		private static readonly int[] NOISE_TABLE_PAL =
 		{
 			4, 7, 14, 30, 60, 88, 118, 148, 188, 236, 354, 472, 708,  944, 1890, 3778
 		};
@@ -70,20 +74,21 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		{
 			public PulseUnit(APU apu, int unit) { this.unit = unit; this.apu = apu; }
 			public int unit;
-			readonly APU apu;
+			private readonly APU apu;
 
 			// reg0
-			int duty_cnt, env_loop, env_constant, env_cnt_value;
+			private int duty_cnt, env_loop, env_constant, env_cnt_value;
 			public bool len_halt;
 			// reg1
-			int sweep_en, sweep_divider_cnt, sweep_negate, sweep_shiftcount;
+			private int sweep_en, sweep_divider_cnt, sweep_negate, sweep_shiftcount;
-			bool sweep_reload;
+
+			private bool sweep_reload;
 			// reg2/3
-			int len_cnt;
+			private int len_cnt;
 			public int timer_raw_reload_value, timer_reload_value;
 
 			// misc..
-			int lenctr_en;
+			private int lenctr_en;
 
 			public void SyncState(Serializer ser)
 			{
@@ -179,14 +184,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 
 			// state
-			int swp_divider_counter;
+			private int swp_divider_counter;
-			bool swp_silence;
+			private bool swp_silence;
-			int duty_step;
+			private int duty_step;
-			int timer_counter;
+			private int timer_counter;
 			public int sample;
-			bool duty_value;
+			private bool duty_value;
 
-			int env_start_flag, env_divider, env_counter;
+			private int env_start_flag, env_divider, env_counter;
 			public int env_output;
 
 			public void clock_length_and_sweep()
@@ -309,29 +314,29 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 		public sealed class NoiseUnit
 		{
-			readonly APU apu;
+			private readonly APU apu;
 
 			// reg0 (sweep)
-			int env_cnt_value, env_loop, env_constant;
+			private int env_cnt_value, env_loop, env_constant;
 			public bool len_halt;
 
 			// reg2 (mode and period)
-			int mode_cnt, period_cnt;
+			private int mode_cnt, period_cnt;
 
 			// reg3 (length counter and envelop trigger)
-			int len_cnt;
+			private int len_cnt;
 
 			// set from apu:
-			int lenctr_en;
+			private int lenctr_en;
 
 			// state
-			int shift_register = 1;
+			private int shift_register = 1;
-			int timer_counter;
+			private int timer_counter;
 			public int sample;
-			int env_output, env_start_flag, env_divider, env_counter;
+			private int env_output, env_start_flag, env_divider, env_counter;
-			bool noise_bit = true;
+			private bool noise_bit = true;
 
-			readonly int[] NOISE_TABLE;
+			private readonly int[] NOISE_TABLE;
 
 			public NoiseUnit(APU apu, bool pal)
 			{
@@ -497,18 +502,18 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public sealed class TriangleUnit
 		{
 			// reg0
-			int linear_counter_reload, control_flag;
+			private int linear_counter_reload, control_flag;
 			// reg1 (n/a)
 			// reg2/3
-			int timer_cnt, reload_flag, len_cnt;
+			private int timer_cnt, reload_flag, len_cnt;
 			public bool halt_2;
 			// misc..
-			int lenctr_en;
+			private int lenctr_en;
-			int linear_counter, timer, timer_cnt_reload;
+			private int linear_counter, timer, timer_cnt_reload;
-			int seq = 0;
+			private int seq = 0;
 			public int sample;
 
-			readonly APU apu;
+			private readonly APU apu;
 			public TriangleUnit(APU apu) { this.apu = apu; }
 
 			public void SyncState(Serializer ser)
@@ -646,10 +651,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		} // class TriangleUnit
 
-		sealed class DMCUnit
+		private sealed class DMCUnit
 		{
-			readonly APU apu;
+			private readonly APU apu;
-			readonly int[] DMC_RATE;
+			private readonly int[] DMC_RATE;
 			public DMCUnit(APU apu, bool pal)
 			{
 				this.apu = apu;
@@ -664,22 +669,22 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				user_length = 1;
 			}
 
-			bool irq_enabled;
+			private bool irq_enabled;
-			bool loop_flag;
+			private bool loop_flag;
-			int timer_reload;
+			private int timer_reload;
 
 			// dmc delay per visual 2a03
-			int delay;
+			private int delay;
 
 			// this timer never stops, ever, so it is convenient to use for even/odd timing used elsewhere
 			public int timer;
-			int user_address;
+			private int user_address;
 			public uint user_length, sample_length;
-			int sample_address, sample_buffer;
+			private int sample_address, sample_buffer;
-			bool sample_buffer_filled;
+			private bool sample_buffer_filled;
 
-			int out_shift, out_bits_remaining, out_deltacounter;
+			private int out_shift, out_bits_remaining, out_deltacounter;
-			bool out_silence;
+			private bool out_silence;
 
 			public int sample => out_deltacounter /* - 64*/;
 
@@ -768,7 +773,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				}
 			}
 
-			void Clock()
+			private void Clock()
 			{
 				// If the silence flag is clear, bit 0 of the shift register is applied to the counter as follows: 
 				// if bit 0 is clear and the delta-counter is greater than 1, the counter is decremented by 2; 
@@ -940,38 +945,38 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public PulseUnit[] pulse = new PulseUnit[2];
 		public TriangleUnit triangle;
 		public NoiseUnit noise;
-		readonly DMCUnit dmc;
+		private readonly DMCUnit dmc;
 
-		bool irq_pending;
+		private bool irq_pending;
-		bool dmc_irq;
+		private bool dmc_irq;
-		int pending_reg = -1;
+		private int pending_reg = -1;
-		bool doing_tick_quarter = false;
+		private bool doing_tick_quarter = false;
-		byte pending_val = 0;
+		private byte pending_val = 0;
 		public int seq_tick;
 		public byte seq_val;
 		public bool len_clock_active;
 
-		int sequencer_counter, sequencer_step, sequencer_mode, sequencer_irq_inhibit, sequencer_irq_assert;
+		private int sequencer_counter, sequencer_step, sequencer_mode, sequencer_irq_inhibit, sequencer_irq_assert;
-		bool sequencer_irq, sequence_reset_pending, sequencer_irq_clear_pending, sequencer_irq_flag;
+		private bool sequencer_irq, sequence_reset_pending, sequencer_irq_clear_pending, sequencer_irq_flag;
 
 		public void RunDMCFetch()
 		{
 			dmc.Fetch();
 		}
 
-		readonly int[][] sequencer_lut = new int[2][];
+		private readonly int[][] sequencer_lut = new int[2][];
 
-		static readonly int[][] sequencer_lut_ntsc = {
+		private static readonly int[][] sequencer_lut_ntsc = {
 			new[]{7457,14913,22371,29830},
 			new[]{7457,14913,22371,29830,37282}
 		};
 
-		static readonly int[][] sequencer_lut_pal = {
+		private static readonly int[][] sequencer_lut_pal = {
 			new[]{8313,16627,24939,33254},
 			new[]{8313,16627,24939,33254,41566}
 		};
 
-		void sequencer_write_tick(byte val)
+		private void sequencer_write_tick(byte val)
 		{
 			if (seq_tick>0)
 			{
@@ -1004,7 +1009,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		void sequencer_tick()
+		private void sequencer_tick()
 		{
 			sequencer_counter++;
 			if (sequencer_mode == 0 && sequencer_counter == sequencer_lut[0][3]-1)
@@ -1036,7 +1041,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			irq_pending = sequencer_irq | dmc_irq;
 		}
 
-		void sequencer_check()
+		private void sequencer_check()
 		{
 			// Console.WriteLine("sequencer mode {0} step {1}", sequencer_mode, sequencer_step);
 			bool quarter, half, reset;
@@ -1075,7 +1080,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			if (half) HalfFrame();
 		}
 
-		void HalfFrame()
+		private void HalfFrame()
 		{
 			doing_tick_quarter = true;
 			pulse[0].clock_length_and_sweep();
@@ -1084,7 +1089,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			noise.clock_length_and_sweep();
 		}
 
-		void QuarterFrame()
+		private void QuarterFrame()
 		{
 			doing_tick_quarter = true;
 			pulse[0].clock_env();
@@ -1124,7 +1129,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			pending_val = val;
 		}
 
-		void _WriteReg(int addr, byte val)
+		private void _WriteReg(int addr, byte val)
 		{
 			//Console.WriteLine("{0:X4} = {1:X2}", addr, val);
 			int index = addr - 0x4000;
@@ -1218,7 +1223,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public int DebugCallbackDivider;
 		public int DebugCallbackTimer;
 
-		int pending_length_change;
+		private int pending_length_change;
 
 		[MethodImpl(MethodImplOptions.AggressiveInlining)]
 		public void RunOneFirst()
@@ -1326,9 +1331,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 		public uint sampleclock = 0;
 
-		int oldmix = 0;
+		private int oldmix = 0;
-		int cart_sound = 0;
+		private int cart_sound = 0;
-		int old_cart_sound = 0;
+		private int old_cart_sound = 0;
 
 		[MethodImpl(MethodImplOptions.AggressiveInlining)]
 		public int EmitSample()

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/AVE-NINA.cs

@@ -7,11 +7,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class AVE_NINA_001 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_32k, chr_bank_mask_4k;
+		private int prg_bank_mask_32k, chr_bank_mask_4k;
 
 		//state
-		int[] chr_banks_4k = new int[2];
+		private int[] chr_banks_4k = new int[2];
-		int prg_bank_32k;
+		private int prg_bank_32k;
 
 		public override void SyncState(Serializer ser)
 		{
@@ -88,14 +88,15 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	// according to the latest on nesdev:
 	// mapper 079: [.... PCCC] @ 4100
 	// mapper 113: [MCPP PCCC] @ 4100  (no games for this are in bootgod)
-	class AVE_NINA_006 : NesBoardBase
+	internal class AVE_NINA_006 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_32k, chr_bank_mask_8k;
+		private int prg_bank_mask_32k, chr_bank_mask_8k;
-		bool mirror_control_enabled;
+		private bool mirror_control_enabled;
-		bool isMapper79 = false;
+
+		private bool isMapper79 = false;
 		//state
-		int chr_bank_8k, prg_bank_32k;
+		private int chr_bank_8k, prg_bank_32k;
 
 		public override void SyncState(Serializer ser)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/AxROM.cs

@@ -8,11 +8,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class AxROM : NesBoardBase
 	{
 		//configuration
-		bool bus_conflict;
+		private bool bus_conflict;
-		int prg_mask_32k;
+		private int prg_mask_32k;
 
 		//state
-		int prg;
+		private int prg;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/BANDAI-FCG-1.cs

@@ -33,24 +33,24 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class BANDAI_FCG_1 : NesBoardBase 
 	{
 		//configuration
-		int prg_bank_mask_16k, chr_bank_mask_1k;
+		private int prg_bank_mask_16k, chr_bank_mask_1k;
 
-		bool regs_prg_enable; // can the mapper regs be written to in 8000:ffff?
+		private bool regs_prg_enable; // can the mapper regs be written to in 8000:ffff?
-		bool regs_wram_enable; // can the mapper regs be written to in 6000:7fff?
+		private bool regs_wram_enable; // can the mapper regs be written to in 6000:7fff?
-		bool jump2 = false; // are we in special mode for the JUMP2 board?
+		private bool jump2 = false; // are we in special mode for the JUMP2 board?
-		bool vram = false; // is this a VRAM board?  (also set to true for JUMP2)
+		private bool vram = false; // is this a VRAM board?  (also set to true for JUMP2)
-		byte jump2_outer_bank; // needed to select between banks in 512K jump2 board
+		private byte jump2_outer_bank; // needed to select between banks in 512K jump2 board
 
 		//regenerable state
-		readonly int[] prg_banks_16k = new int[2];
+		private readonly int[] prg_banks_16k = new int[2];
 
 		//state
-		int prg_reg_16k;
+		private int prg_reg_16k;
-		byte[] regs = new byte[8];
+		private byte[] regs = new byte[8];
-		bool irq_enabled;
+		private bool irq_enabled;
-		ushort irq_counter;
+		private ushort irq_counter;
-		ushort irq_latch;
+		private ushort irq_latch;
-		SEEPROM eprom;
+		private SEEPROM eprom;
 		public DatachBarcode reader;
 
 		public override void SyncState(Serializer ser)
@@ -176,7 +176,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
-		void SyncPRG()
+		private void SyncPRG()
 		{
 			prg_banks_16k[0] = prg_reg_16k & prg_bank_mask_16k;
 			prg_banks_16k[1] = 0xFF & prg_bank_mask_16k;
@@ -197,7 +197,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			*/		
 		}
 
-		void WriteReg(int reg, byte value)
+		private void WriteReg(int reg, byte value)
 		{
 			//Console.WriteLine("reg {0:X2} = {1:X2}", reg, value);
 			switch (reg)
@@ -358,7 +358,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return Rom[addr];
 		}
 
-		int CalcPPUAddress(int addr)
+		private int CalcPPUAddress(int addr)
 		{
 			int bank_1k = addr >> 10;
 			int ofs = addr & ((1 << 10) - 1);

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/BANDAI_74_161_02_74.cs

@@ -5,10 +5,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	// http://wiki.nesdev.com/w/index.php/INES_Mapper_096
 	internal sealed class BANDAI_74_161_02_74 : NesBoardBase
 	{
-		int chr_block;
+		private int chr_block;
-		int chr_pos = 0;
+		private int chr_pos = 0;
-		int prg_bank_mask_32k;
+		private int prg_bank_mask_32k;
-		byte prg_bank_32k;
+		private byte prg_bank_32k;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/BANDAI_74_161_161_32.cs

@@ -12,10 +12,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		//Kamen Rider Club
 		//Space Shadow
 
-		int chr;
+		private int chr;
-		int prg_bank_mask_16k;
+		private int prg_bank_mask_16k;
-		byte prg_bank_16k;
+		private byte prg_bank_16k;
-		byte[] prg_banks_16k = new byte[2];
+		private byte[] prg_banks_16k = new byte[2];
 
 		public override bool Configure(EDetectionOrigin origin)
 		{
@@ -43,7 +43,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			ser.Sync(nameof(prg_banks_16k), ref prg_banks_16k, false);
 		}
 
-		void SyncPRG()
+		private void SyncPRG()
 		{
 			prg_banks_16k[0] = prg_bank_16k;
 		}

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/BxROM.cs

@@ -6,12 +6,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class BxROM : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_32k;
+		private int prg_bank_mask_32k;
-		int chr_bank_mask_8k;
+		private int chr_bank_mask_8k;
 
 		//state
-		int prg_bank_32k;
+		private int prg_bank_32k;
-		int chr_bank_8k;
+		private int chr_bank_8k;
 
 		public override void SyncState(Serializer ser)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/CNROM.cs

@@ -15,14 +15,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class CNROM : NesBoardBase
 	{
 		//configuration
-		int prg_byte_mask, chr_mask;
+		private int prg_byte_mask, chr_mask;
-		bool copyprotection = false;
+		private bool copyprotection = false;
-		bool bus_conflict;
+		private bool bus_conflict;
-		bool seicross;
+		private bool seicross;
 
 		//state
-		int chr;
+		private int chr;
-		bool chr_enabled = true;
+		private bool chr_enabled = true;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/CPROM.cs

@@ -7,7 +7,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		//generally mapper 13
 
 		//state
-		int chr;
+		private int chr;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Camerica.cs

@@ -8,11 +8,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class Camerica_Mapper071 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_16k;
+		private int prg_bank_mask_16k;
-		bool mirror_control_enabled;
+		private bool mirror_control_enabled;
 
 		//state
-		int[] prg_banks_16k = new int[2];
+		private int[] prg_banks_16k = new int[2];
 
 		public override void SyncState(Serializer ser)
 		{
@@ -87,14 +87,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	}
 
 	//AKA mapper 232
-	class Camerica_Mapper232 : NesBoardBase
+	internal class Camerica_Mapper232 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_16k;
+		private int prg_bank_mask_16k;
 
 		//state
-		int[] prg_banks_16k = new int[2];
+		private int[] prg_banks_16k = new int[2];
-		int prg_block, prg_page;
+		private int prg_block, prg_page;
 
 		public override void SyncState(Serializer ser)
 		{
@@ -144,7 +144,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		void SyncPRG()
+		private void SyncPRG()
 		{
 			prg_banks_16k[0] = (prg_block << 2) | prg_page;
 			prg_banks_16k[1] = (prg_block << 2) | 3;

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/CoolBoy.cs

@@ -12,7 +12,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		// behavior directly from fceu-mm
 
 		// this could be broken down into more sensibly named variables
-		byte[] exp = new byte[4];
+		private byte[] exp = new byte[4];
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/DatachBarcode.cs

@@ -10,7 +10,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 	public class DatachBarcode : IEmulatorService
 	{
-		static readonly byte[,] prefixParityType = new byte[10, 6]
+		private static readonly byte[,] prefixParityType = new byte[10, 6]
 		{
 			{8,8,8,8,8,8}, {8,8,0,8,0,0},
 			{8,8,0,0,8,0}, {8,8,0,0,0,8},
@@ -19,7 +19,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			{8,0,8,0,0,8}, {8,0,0,8,0,8}
 		};
 
-		static readonly byte[,] dataLeftOdd = new byte[10, 7]
+		private static readonly byte[,] dataLeftOdd = new byte[10, 7]
 		{
 			{8,8,8,0,0,8,0}, {8,8,0,0,8,8,0},
 			{8,8,0,8,8,0,0}, {8,0,0,0,0,8,0},
@@ -28,7 +28,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			{8,0,0,8,0,0,0}, {8,8,8,0,8,0,0}
 		};
 
-		static readonly byte[,] dataLeftEven = new byte[10, 7]
+		private static readonly byte[,] dataLeftEven = new byte[10, 7]
 		{
 			{8,0,8,8,0,0,0}, {8,0,0,8,8,0,0},
 			{8,8,0,0,8,0,0}, {8,0,8,8,8,8,0},
@@ -37,7 +37,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			{8,8,8,0,8,8,0}, {8,8,0,8,0,0,0}
 		};
 
-		static readonly byte[,] dataRight = new byte[10, 7]
+		private static readonly byte[,] dataRight = new byte[10, 7]
 		{
 			{0,0,0,8,8,0,8}, {0,0,8,8,0,0,8},
 			{0,0,8,0,0,8,8}, {0,8,8,8,8,0,8},
@@ -46,16 +46,16 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			{0,8,8,0,8,8,8}, {0,0,0,8,0,8,8}
 		};
 
-		const int MIN_DIGITS = 8;
+		private const int MIN_DIGITS = 8;
-		const int MAX_DIGITS = 13;
+		private const int MAX_DIGITS = 13;
-		const int CC_INTERVAL = 1000;
+		private const int CC_INTERVAL = 1000;
 
-		int cycles;
+		private int cycles;
-		byte output;
+		private byte output;
-		int stream_idx;
+		private int stream_idx;
-		byte[] data = new byte[0];
+		private byte[] data = new byte[0];
 
-		byte streamoutput => data[stream_idx];
+		private byte streamoutput => data[stream_idx];
 
 		public void SyncState(Serializer ser)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/ExROM.cs

@@ -131,7 +131,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
-		void PoweronState()
+		private void PoweronState()
 		{
 			//set all prg regs to use ROM
 			regs_prg[0] = 0x80;
@@ -145,7 +145,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			SetMirrorType(EMirrorType.Vertical);
 		}
 
-		int PRGGetBank(int addr, out bool ram)
+		private int PRGGetBank(int addr, out bool ram)
 		{
 			int bank_8k = addr >> 13;
 			bank_8k = _prgBanks8K[bank_8k];
@@ -166,7 +166,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		// 4) 32K wram: 1x 32K
 		//
 		// for iNES, we assume 64K wram
-		int? MaskWRAM(int bank)
+		private int? MaskWRAM(int bank)
 		{
 			bank &= 7;
 			switch (Cart.WramSize)
@@ -192,14 +192,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		void WriteWRAMActual(int bank, int offs, byte value)
+		private void WriteWRAMActual(int bank, int offs, byte value)
 		{
 			int? bbank = MaskWRAM(bank);
 			if (bbank.HasValue)
 				Wram[(int)bbank << 13 | offs] = value;
 		}
 
-		byte ReadWRAMActual(int bank, int offs)
+		private byte ReadWRAMActual(int bank, int offs)
 		{
 			int? bbank = MaskWRAM(bank);
 			return bbank.HasValue
@@ -223,7 +223,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		//  return new TileCoord(tx, ty);
 		//}
 
-		int MapCHR(int addr)
+		private int MapCHR(int addr)
 		{
 			int bank_1k = addr >> 10;
 			int ofs = addr & ((1 << 10) - 1);
@@ -579,7 +579,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		void SyncMultiplier()
+		private void SyncMultiplier()
 		{
 			int result = multiplicand*multiplier;
 			product_low = (byte)(result&0xFF);
@@ -662,7 +662,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return ret;
 		}
 
-		void SyncIRQ()
+		private void SyncIRQ()
 		{
 			IrqSignal = (irq_pending && irq_enabled) || irq_audio;
 		}
@@ -709,7 +709,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			audio.Clock();
 		}
 
-		void SetBank(int[] target, int offset, int size, int value)
+		private void SetBank(int[] target, int offset, int size, int value)
 		{
 			value &= ~(size-1);
 			for (int i = 0; i < size; i++)
@@ -720,7 +720,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		void SyncPRGBanks()
+		private void SyncPRGBanks()
 		{
 			switch (prg_mode)
 			{
@@ -745,7 +745,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		void SyncCHRBanks()
+		private void SyncCHRBanks()
 		{
 			//MASTER LOGIC: something like this this might be enough to work, but i'll play with it later
 			//bank_1k >> (3 - chr_mode) << chr_mode | bank_1k & ( etc.etc.

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/FS304.cs

@@ -4,8 +4,8 @@
 	{
 		// waixing?
 
-		int prg;
+		private int prg;
-		int prg_mask_32k;
+		private int prg_mask_32k;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Farid-UNROM-8-in-1.cs

@@ -5,10 +5,10 @@
 		// http://forums.nesdev.com/viewtopic.php?f=9&t=11099
 
 		// state
-		int c; // clock bit for the second 74'161
+		private int c; // clock bit for the second 74'161
-		int e; // /load for second 74'161. guaranteed to be 0 on powerup
+		private int e; // /load for second 74'161. guaranteed to be 0 on powerup
-		int prginner;
+		private int prginner;
-		int prgouter; // guaranteed to be 0 on powerup
+		private int prgouter; // guaranteed to be 0 on powerup
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/GameGenie.cs

@@ -6,7 +6,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 	internal sealed class GameGenie : NesBoardBase
 	{
-		static readonly byte[] PatternTables = new byte[256];
+		private static readonly byte[] PatternTables = new byte[256];
 
 		static GameGenie()
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/GxROM.cs

@@ -17,10 +17,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class GxROM : NesBoardBase
 	{
 		//configuraton
-		int prg_mask, chr_mask;
+		private int prg_mask, chr_mask;
 
 		//state
-		int prg, chr;
+		private int prg, chr;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/IC_74x377.cs

@@ -12,12 +12,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class IC_74x377 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_32k, chr_bank_mask_8k;
+		private int prg_bank_mask_32k, chr_bank_mask_8k;
-		bool bus_conflict = true;
+		private bool bus_conflict = true;
-		bool bus_conflict_50282 = false;
+		private bool bus_conflict_50282 = false;
 
 		//state
-		int prg_bank_32k, chr_bank_8k;
+		private int prg_bank_32k, chr_bank_8k;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/IREM-74_161_161_21_138.cs

@@ -9,7 +9,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 	internal sealed class IREM_74_161_161_21_138 : NesBoardBase
 	{
-		int chr, prg;
+		private int chr, prg;
 		public override bool Configure(EDetectionOrigin origin)
 		{
 			//configure

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/IREM_TAM_S1.cs

@@ -7,9 +7,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 	internal sealed class IREM_TAM_S1 : NesBoardBase
 	{
-		int prg_bank_mask_16k;
+		private int prg_bank_mask_16k;
-		byte prg_bank_16k;
+		private byte prg_bank_16k;
-		byte[] prg_banks_16k = new byte[2];
+		private byte[] prg_banks_16k = new byte[2];
 
 		public override bool Configure(EDetectionOrigin origin)
 		{
@@ -36,7 +36,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			ser.Sync(nameof(prg_banks_16k), ref prg_banks_16k, false);
 		}
 
-		void SyncPRG()
+		private void SyncPRG()
 		{
 			prg_banks_16k[1] = prg_bank_16k;
 		}

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Irem_G101.cs

@@ -11,13 +11,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class Irem_G101 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask, chr_bank_mask;
+		private int prg_bank_mask, chr_bank_mask;
-		bool oneScreenHack;
+		private bool oneScreenHack;
 
 		//state
-		byte[] prg_regs_8k = new byte[8];
+		private byte[] prg_regs_8k = new byte[8];
-		byte[] chr_regs_1k = new byte[8];
+		private byte[] chr_regs_1k = new byte[8];
-		int prg_mode, mirror_mode;
+		private int prg_mode, mirror_mode;
 
 		public override void SyncState(Serializer ser)
 		{
@@ -64,7 +64,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
-		void SyncMirror()
+		private void SyncMirror()
 		{
 			if (oneScreenHack)
 				SetMirrorType(EMirrorType.OneScreenA);

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Irem_H3001.cs

@@ -12,14 +12,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class Irem_H3001 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask, chr_bank_mask;
+		private int prg_bank_mask, chr_bank_mask;
 
 		//state
-		byte[] prg_regs_8k = new byte[4];
+		private byte[] prg_regs_8k = new byte[4];
-		byte[] chr_regs_1k = new byte[8];
+		private byte[] chr_regs_1k = new byte[8];
-		bool irq_counter_enabled, irq_asserted;
+		private bool irq_counter_enabled, irq_asserted;
-		ushort irq_counter, irq_reload;
+		private ushort irq_counter, irq_reload;
-		int clock_counter;
+		private int clock_counter;
 
 		public override void SyncState(Serializer ser)
 		{
@@ -79,7 +79,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			SyncIRQ();
 		}
 
-		void SyncIRQ()
+		private void SyncIRQ()
 		{
 			IrqSignal = irq_asserted;
 		}

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_05_06_07.cs

@@ -16,9 +16,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	*/
 	internal sealed class JALECO_JF_05_06_07 : NesBoardBase
 	{
-		int prg_byte_mask;
+		private int prg_byte_mask;
-		int chr;
+		private int chr;
-		int chr_mask_8k;
+		private int chr_mask_8k;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_13.cs

@@ -12,12 +12,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class JALECO_JF_13 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_32k;
+		private int prg_bank_mask_32k;
-		int chr_bank_mask_8k;
+		private int chr_bank_mask_8k;
 
 		//state
-		int chr;
+		private int chr;
-		int prg;
+		private int prg;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_17.cs

@@ -18,13 +18,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class JALECO_JF_17 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_16k;
+		private int prg_bank_mask_16k;
-		int chr_bank_mask_8k;
+		private int chr_bank_mask_8k;
 
 		//state
-		int latch;
+		private int latch;
-		byte[] prg_banks_16k = new byte[2];
+		private byte[] prg_banks_16k = new byte[2];
-		byte[] chr_banks_8k = new byte[1];
+		private byte[] chr_banks_8k = new byte[1];
 
 		public override bool Configure(EDetectionOrigin origin)
 		{
@@ -50,7 +50,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
-		void SyncMap()
+		private void SyncMap()
 		{
 			ApplyMemoryMapMask(prg_bank_mask_16k, prg_banks_16k);
 			ApplyMemoryMapMask(chr_bank_mask_8k, chr_banks_8k);

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_19.cs

@@ -15,13 +15,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	internal sealed class JALECO_JF_19 : NesBoardBase
 	{
 		//configuration
-		int prg_bank_mask_16k;
+		private int prg_bank_mask_16k;
-		int chr_bank_mask_8k;
+		private int chr_bank_mask_8k;
 
 		//state
-		int latch;
+		private int latch;
-		byte[] prg_banks_16k = new byte[2];
+		private byte[] prg_banks_16k = new byte[2];
-		byte[] chr_banks_8k = new byte[1];
+		private byte[] chr_banks_8k = new byte[1];
 
 		public override bool Configure(EDetectionOrigin origin)
 		{
@@ -47,7 +47,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
-		void SyncMap()
+		private void SyncMap()
 		{
 			ApplyMemoryMapMask(prg_bank_mask_16k, prg_banks_16k);
 			ApplyMemoryMapMask(chr_bank_mask_8k, chr_banks_8k);

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_SS8806.cs

@@ -6,14 +6,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	{
 		//http://wiki.nesdev.com/w/index.php/INES_Mapper_018
 
-		byte[] prg_banks_8k = new byte[4];
+		private byte[] prg_banks_8k = new byte[4];
-		byte[] chr_banks_1k = new byte[8];
+		private byte[] chr_banks_1k = new byte[8];
-		int chr_bank_mask_1k, prg_bank_mask_8k;
+		private int chr_bank_mask_1k, prg_bank_mask_8k;
-		int ppuclock;
+		private int ppuclock;
-		int irqclock;
+		private int irqclock;
-		int irqreload;
+		private int irqreload;
-		int irqcountwidth;
+		private int irqcountwidth;
-		bool irqcountpaused;
+		private bool irqcountpaused;
 
 
 		public override bool Configure(EDetectionOrigin origin)
@@ -234,7 +234,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		/// <summary>
 		/// emulate underflow for the appropriate number of bits
 		/// </summary>
-		uint squeeze(int input)
+		private uint squeeze(int input)
 		{
 			unchecked
 			{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Jaleco-JF_11_14.cs

@@ -23,7 +23,7 @@ Other chips used: Sunsoft-1
 
 	internal sealed class Jaleco_JF_11_14 : NesBoardBase
 	{
-		int chr, prg;
+		private int chr, prg;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MLT-ACTION52.cs

@@ -13,8 +13,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public int chr_reg;
 		public int chip_offset;
 		public bool cheetahmen = false;
-		byte[] eRAM = new byte[4];
+		private byte[] eRAM = new byte[4];
-		int chr_bank_mask_8k, prg_bank_mask_16k, prg_bank_mask_32k;
+		private int chr_bank_mask_8k, prg_bank_mask_16k, prg_bank_mask_32k;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MLT-MAX15.cs

@@ -7,15 +7,15 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	{
 		//http://wiki.nesdev.com/w/index.php/INES_Mapper_234
 
-		bool mode = false;
+		private bool mode = false;
-		int block_high = 0;
+		private int block_high = 0;
-		int block_low = 0;
+		private int block_low = 0;
-		byte prg_bank = 0;
+		private byte prg_bank = 0;
-		byte chr_bank_high = 0;
+		private byte chr_bank_high = 0;
-		byte chr_bank_low = 0;
+		private byte chr_bank_low = 0;
-		int prg_bank_mask_32k = 0;
+		private int prg_bank_mask_32k = 0;
-		int chr_bank_mask_8k = 0;
+		private int chr_bank_mask_8k = 0;
-		bool reg_0_locked = false;
+		private bool reg_0_locked = false;
 		public override bool Configure(EDetectionOrigin origin)
 		{
 			switch (Cart.BoardType)

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/HKROM.cs

@@ -10,9 +10,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		//configuration
 
 		//state
-		bool wram_enabled;
+		private bool wram_enabled;
-		bool wram_h_enabled, wram_l_enabled;
+		private bool wram_h_enabled, wram_l_enabled;
-		bool wram_h_enabled_write, wram_l_enabled_write;
+		private bool wram_h_enabled_write, wram_l_enabled_write;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/MMC3.cs

@@ -18,8 +18,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public byte[] regs = new byte[8];
 
 		public byte mirror;
-		int a12_old;
+		private int a12_old;
-		byte irq_reload, irq_counter;
+		private byte irq_reload, irq_counter;
 		public bool irq_pending, irq_enable, irq_reload_flag;
 		public bool wram_enable, wram_write_protect;
 
@@ -27,8 +27,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		//theres no sense in delaying the IRQ, so its logic must be tied to the separator.
 		//the hint, of course, is that the countdown value is the same.
 		//will someone else try to unify them?
-		int separator_counter;
+		private int separator_counter;
-		int irq_countdown;
+		private int irq_countdown;
 
 		//volatile state
 		public byte[] chr_regs_1k = new byte[8];
@@ -39,7 +39,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		{
 			None, MMC3A, MMC3BSharp, MMC3BNonSharp, MMC3C, MMC6
 		}
-		EMMC3Type _mmc3type = EMMC3Type.None;
+
+		private EMMC3Type _mmc3type = EMMC3Type.None;
 		public EMMC3Type MMC3Type
 		{
 			get => _mmc3type;
@@ -49,7 +50,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				oldIrqType = (_mmc3type == EMMC3Type.MMC3A || _mmc3type == EMMC3Type.MMC3BNonSharp || _mmc3type == EMMC3Type.MMC6);
 			}
 		}
-		bool oldIrqType;
+
+		private bool oldIrqType;
 
 		public EMirrorType MirrorType => mirror switch
 		{
@@ -208,7 +210,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		void IRQ_EQ_Pass()
+		private void IRQ_EQ_Pass()
 		{
 			if (irq_enable)
 			{
@@ -218,7 +220,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			SyncIRQ();
 		}
 
-		void ClockIRQ()
+		private void ClockIRQ()
 		{
 			int last_irq_counter = irq_counter;
 			if (irq_reload_flag || irq_counter == 0)

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper012.cs

@@ -28,7 +28,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			ser.Sync(nameof(block1), ref block1);
 		}
 
-		int block0, block1;
+		private int block0, block1;
 
 		public override void WriteExp(int addr, byte value)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper037.cs

@@ -5,7 +5,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	// mmc3 multi, PAL, "Super Mario Bros. / Tetris / Nintendo World Cup"
 	internal sealed class Mapper037 : MMC3Board_Base
 	{
-		int exreg;
+		private int exreg;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper044.cs

@@ -27,7 +27,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			ser.Sync(nameof(block_select), ref block_select);
 		}
 
-		int block_select;
+		private int block_select;
 
 		public override void WritePrg(int addr, byte value)
 		{
@@ -41,10 +41,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
-		static readonly int[] PRG_AND = {0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0f };
+		private static readonly int[] PRG_AND = {0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0f };
-		static readonly int[] PRG_OR = { 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x60 };
+		private static readonly int[] PRG_OR = { 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x60 };
-		static readonly int[] CHR_AND = { 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7f };
+		private static readonly int[] CHR_AND = { 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7f };
-		static readonly int[] CHR_OR = { 0x000, 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x300 };
+		private static readonly int[] CHR_OR = { 0x000, 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x300 };
 
 		protected override int Get_PRGBank_8K(int addr)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper049.cs

@@ -32,8 +32,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			ser.Sync(nameof(mode), ref mode);
 		}
 
-		int block, prg;
+		private int block, prg;
-		bool mode;
+		private bool mode;
 
 		public override void WriteWram(int addr, byte value)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper052.cs

@@ -7,11 +7,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	{
 		//http://wiki.nesdev.com/w/index.php/INES_Mapper_052
 
-		bool lock_regs = false;
+		private bool lock_regs = false;
-		bool prg_block_size = false;
+		private bool prg_block_size = false;
-		bool chr_block_size = false;
+		private bool chr_block_size = false;
-		int prg_or = 0;
+		private int prg_or = 0;
-		int chr_or = 0;
+		private int chr_or = 0;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper115.cs

@@ -33,8 +33,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			ser.Sync(nameof(chr_block_or), ref chr_block_or);
 		}
 
-		bool prg_mode_mapper;
+		private bool prg_mode_mapper;
-		int prg_page, chr_block_or;
+		private int prg_page, chr_block_or;
 
 		public override void WriteWram(int addr, byte value)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper165.cs

@@ -7,9 +7,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 	// seem to be some graphical glitches...
 	internal sealed class Mapper165 : MMC3Board_Base
 	{
-		bool latch0 = false;
+		private bool latch0 = false;
-		bool latch1 = false;
+		private bool latch1 = false;
-		int real_chr_mask;
+		private int real_chr_mask;
 
 		public override bool Configure(EDetectionOrigin origin)
 		{

src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper182.cs

@@ -41,7 +41,7 @@
 			}
 		}
 
-		static readonly byte[] scramble_table = { 0, 3, 1, 5, 6, 7, 2, 4 };
+		private static readonly byte[] scramble_table = { 0, 3, 1, 5, 6, 7, 2, 4 };
 
 		private static int scramble_A000(byte val)
 		{