nes-support mapper 182

BizHawk.Emulation/BizHawk.Emulation.csproj

@@ -125,6 +125,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper049.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper095.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper115.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper182.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper206.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\MMC3_family.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\NES-QJ.cs" />

BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt

@@ -95,12 +95,12 @@ Open bus and bus conflict emulation is not considered complete or thorough in an
 164	Pirate		Junk - Started
 165	Pirate		Junk
 180	Misc (J)	Complete (but we don't implement the crazy climber controller) 
-182	MMC3Variant	Nothing
+182	MMC3Variant	Decent
 184	Sunsoft-1	Complete
 185	Misc (J)	Complete
 189	MMC3Variant	Nothing
-191	Pirate		Junk
+191	Pirate		Junk (mmc3 variant)
-192	Pirate		Junk
+192	Pirate		Junk (mmc3 variant)
 193	Unlicensed	Junk - Started
 194	Pirate		Junk
 200	Multicart	Junk

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

@@ -0,0 +1,65 @@
+using System;
+using System.IO;
+using System.Diagnostics;
+
+namespace BizHawk.Emulation.Consoles.Nintendo
+{
+	public class Mapper182 : MMC3Board_Base
+	{
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			//analyze board type
+			switch (Cart.board_type)
+			{
+				case "MAPPER182":
+					break;
+				default:
+					return false;
+			}
+
+			BaseSetup();
+
+			return true;
+		}
+
+		public override void WritePRG(int addr, byte value)
+		{
+			addr += 0x8000;
+			switch (addr & 0xE001)
+			{
+				case 0x8000: break; //?
+				case 0x8001: base.WritePRG(0xA000,value); break;
+				case 0xA000:
+					value = (byte)scramble_A000(value);
+					base.WritePRG(0x8000,value);
+					break;
+				case 0xA001: break; //?
+				case 0xC000: base.WritePRG(0x8001, value); break;
+				case 0xC001:
+					base.WritePRG(0xC000, value);
+					base.WritePRG(0xC001, value);
+					break;
+				default:
+					base.WritePRG(addr, value);
+					break;
+			}
+		}
+
+		static byte[] scramble_table = new byte[] { 0, 3, 1, 5, 6, 7, 2, 4 };
+		static int scramble_A000(byte val)
+		{
+			return (val & ~0x7) | scramble_table[val & 0x7];
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+		}
+
+		public override void WriteWRAM(int addr, byte value)
+		{
+			base.WriteWRAM(addr, value);
+		}
+
+	}
+}

BizHawk.Emulation/Consoles/Nintendo/NES/iNES.cs

@@ -106,6 +106,7 @@ static string ClassifyTable = @"
 79	-1	-1	-1	-1	AVE-NINA-06; Blackjack (U)
 113	-1	-1	-1	-1	AVE-NINA-06; ???
 115	-1	-1	-1	-1	MAPPER115
+182	-1	-1	-1	-1	MAPPER182
 232	-1	-1	-1	-1	CAMERICA-ALGQ; Quattro Adventure
 240	-1	-1	-1	-1	MAPPER240
 ";