From 6ec4451c95d79f4853ba216134e90172c2b9be44 Mon Sep 17 00:00:00 2001 From: alyosha-tas Date: Fri, 24 Jun 2016 15:02:08 -0400 Subject: [PATCH] Add files via upload --- Execute.cs | 2992 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2992 insertions(+) create mode 100644 Execute.cs diff --git a/Execute.cs b/Execute.cs new file mode 100644 index 0000000000..9b9d67653f --- /dev/null +++ b/Execute.cs @@ -0,0 +1,2992 @@ +//http://nesdev.parodius.com/6502_cpu.txt + +using System; +using BizHawk.Common; +using BizHawk.Common.NumberExtensions; +using BizHawk.Emulation.Common; + +namespace BizHawk.Emulation.Cores.Components.M6502 +{ + public partial class MOS6502X + { + //dont know whether this system is any faster. hard to get benchmarks someone else try it? + //static ShortBuffer CompiledMicrocode; + //static ShortBuffer MicrocodeIndex; + static MOS6502X() + { + // int index = 0; + // MicrocodeIndex = new ShortBuffer(VOP_NUM); + // List temp = new List(); + // for (int i = 0; i < VOP_NUM; i++) + // { + // MicrocodeIndex[i] = (short)index; + // int numUops = Microcode[i].Length; + // for (int j = 0; j < numUops; j++) + // temp.Add(Microcode[i][j]); + // index += numUops; + // } + // CompiledMicrocode = new ShortBuffer(temp.Count); + // for (int i = 0; i < temp.Count; i++) + // CompiledMicrocode[i] = (short)temp[i]; + } + + static Uop[][] Microcode = new Uop[][] + { + //0x00 + /*BRK [implied]*/ new Uop[] { Uop.Fetch2, Uop.PushPCH, Uop.PushPCL, Uop.PushP_BRK, Uop.FetchPCLVector, Uop.FetchPCHVector, Uop.End_SuppressInterrupt }, + /*ORA (addr,X) [indexed indirect READ]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_ORA, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*SLO* (addr,X) [indexed indirect RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_RMW, Uop.IdxInd_Stage7_RMW_SLO, Uop.IdxInd_Stage8_RMW, Uop.End }, + /*NOP zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_NOP, Uop.End }, + /*ORA zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_ORA, Uop.End }, + /*ASL zp [zero page RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_ASL, Uop.ZP_RMW_Stage5, Uop.End }, + /*SLO* zp [zero page RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_SLO, Uop.ZP_RMW_Stage5, Uop.End }, + /*PHP [implied]*/ new Uop[] { Uop.FetchDummy, Uop.PushP, Uop.End }, + /*ORA #nn [immediate]*/ new Uop[] { Uop.Imm_ORA, Uop.End }, + /*ASL A [accumulator]*/ new Uop[] { Uop.Imp_ASL_A, Uop.End }, + /*ANC** [immediate] [unofficial]*/ new Uop[] { Uop.Imm_ANC, Uop.End }, + /*NOP addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_NOP, Uop.End }, + /*ORA addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_ORA, Uop.End }, + /*ASL addr [absolute RMW]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_ASL, Uop.Abs_RMW_Stage6, Uop.End }, + /*SLO* addr [absolute RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_SLO, Uop.Abs_RMW_Stage6, Uop.End }, + //0x10 + /*BPL +/-rel*/ new Uop[] { Uop.RelBranch_Stage2_BPL, Uop.End }, + /*ORA (addr),Y* [indirect indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_ORA, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*SLO (addr),Y* [indirect indexed RMW] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_RMW_Stage5, Uop.IndIdx_RMW_Stage6, Uop.IndIdx_RMW_Stage7_SLO, Uop.IndIdx_RMW_Stage8, Uop.End }, + /*NOP zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_NOP, Uop.End }, + /*ORA zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_ORA, Uop.End }, + /*ASL zp,X [zero page indexed RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_ASL, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*SLO* zp,X [zero page indexed RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_SLO, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*CLC [implied]*/ new Uop[] { Uop.Imp_CLC, Uop.End }, + /*ORA addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_ORA, Uop.End }, + /*NOP 1A*/ new Uop[] { Uop.FetchDummy, Uop.End }, + /*SLO* addr,Y [absolute indexed RMW Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_SLO, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*NOP addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_NOP, Uop.End }, + /*ORA addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_ORA, Uop.End }, + /*ASL addr,X [absolute indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_ASL, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*SLO* addr,X [absolute indexed RMW X] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_SLO, Uop.AbsIdx_RMW_Stage7, Uop.End }, + //0x20 + /*JSR*/ new Uop[] { Uop.Fetch2, Uop.NOP, Uop.PushPCH, Uop.PushPCL, Uop.JSR, Uop.End }, + /*AND (addr,X) [indexed indirect READ]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_AND, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*RLA* (addr,X) [indexed indirect RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_RMW, Uop.IdxInd_Stage7_RMW_RLA, Uop.IdxInd_Stage8_RMW, Uop.End }, + /*BIT zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_BIT, Uop.End }, + /*AND zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_AND, Uop.End }, + /*ROL zp [zero page RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_ROL, Uop.ZP_RMW_Stage5, Uop.End }, + /*RLA* zp [zero page RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_RLA, Uop.ZP_RMW_Stage5, Uop.End }, + /*PLP [implied] */ new Uop[] { Uop.FetchDummy, Uop.IncS, Uop.PullP_NoInc, Uop.End_ISpecial }, + /*AND #nn [immediate]*/ new Uop[] { Uop.Imm_AND, Uop.End }, + /*ROL A [accumulator]*/ new Uop[] { Uop.Imp_ROL_A, Uop.End }, + /*ANC** [immediate] [unofficial]*/ new Uop[] { Uop.Imm_ANC, Uop.End }, + /*BIT addr [absolute]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_BIT, Uop.End }, + /*AND addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_AND, Uop.End }, + /*ROL addr [absolute RMW]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_ROL, Uop.Abs_RMW_Stage6, Uop.End }, + /*RLA* addr [absolute RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_RLA, Uop.Abs_RMW_Stage6, Uop.End }, + //0x30 + /*BMI +/-rel [relative]*/ new Uop[] { Uop.RelBranch_Stage2_BMI, Uop.End }, + /*AND (addr),Y* [indirect indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_AND, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*RLA* (addr),Y* [indirect indexed RMW] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_RMW_Stage5, Uop.IndIdx_RMW_Stage6, Uop.IndIdx_RMW_Stage7_RLA, Uop.IndIdx_RMW_Stage8, Uop.End }, + /*NOP zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_NOP, Uop.End }, + /*AND zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_AND, Uop.End }, + /*ROL zp,X [zero page indexed RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_ROL, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*RLA* zp,X [zero page indexed RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_RLA, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*SEC [implied]*/ new Uop[] { Uop.Imp_SEC, Uop.End }, + /*AND addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_AND, Uop.End }, + /*NOP 3A [implied]*/ new Uop[] { Uop.FetchDummy, Uop.End }, + /*RLA* addr,Y [absolute indexed RMW Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_RLA, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*NOP addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_NOP, Uop.End }, + /*AND addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_AND, Uop.End }, + /*ROL addr,X [absolute indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_ROL, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*RLA* addr,X [absolute indexed RMW X] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_RLA, Uop.AbsIdx_RMW_Stage7, Uop.End }, + //0x40 + /*RTI*/ new Uop[] { Uop.FetchDummy, Uop.IncS, Uop.PullP, Uop.PullPCL, Uop.PullPCH_NoInc, Uop.End }, + /*EOR (addr,X) [indexed indirect READ]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_EOR, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*SRE* (addr,X) [indexed indirect RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_RMW, Uop.IdxInd_Stage7_RMW_SRE, Uop.IdxInd_Stage8_RMW, Uop.End }, + /*NOP zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_NOP, Uop.End }, + /*EOR zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_EOR, Uop.End }, + /*LSR zp [zero page RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_LSR, Uop.ZP_RMW_Stage5, Uop.End }, + /*SRE* zp [zero page RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_SRE, Uop.ZP_RMW_Stage5, Uop.End }, + /*PHA [implied]*/ new Uop[] { Uop.FetchDummy, Uop.PushA, Uop.End }, + /*EOR #nn [immediate]*/ new Uop[] { Uop.Imm_EOR, Uop.End }, + /*LSR A [accumulator]*/ new Uop[] { Uop.Imp_LSR_A, Uop.End }, + /*ASR** [immediate] [unofficial]*/ new Uop[] { Uop.Imm_ASR, Uop.End }, + /*JMP addr [absolute]*/ new Uop[] { Uop.Fetch2, Uop.JMP_abs, Uop.End }, + /*EOR addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_EOR, Uop.End }, + /*LSR addr [absolute RMW]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_LSR, Uop.Abs_RMW_Stage6, Uop.End }, + /*SRE* addr [absolute RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_SRE, Uop.Abs_RMW_Stage6, Uop.End }, + //0x50 + /*BVC +/-rel [relative]*/ new Uop[] { Uop.RelBranch_Stage2_BVC, Uop.End }, + /*EOR (addr),Y* [indirect indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_EOR, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*SRE* (addr),Y* [indirect indexed RMW] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_RMW_Stage5, Uop.IndIdx_RMW_Stage6, Uop.IndIdx_RMW_Stage7_SRE, Uop.IndIdx_RMW_Stage8, Uop.End }, + /*NOP zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_NOP, Uop.End }, + /*EOR zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_EOR, Uop.End }, + /*LSR zp,X [zero page indexed RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_LSR, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*SRE* zp,X [zero page indexed RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_SRE, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*CLI [implied]*/ new Uop[] { Uop.Imp_CLI, Uop.End_ISpecial }, + /*EOR addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_EOR, Uop.End }, + /*NOP 5A [implied]*/ new Uop[] { Uop.FetchDummy, Uop.End }, + /*SRE* addr,Y [absolute indexed RMW Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_SRE, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*NOP addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_NOP, Uop.End }, + /*EOR addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_EOR, Uop.End }, + /*LSR addr,X [absolute indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_LSR, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*SRE* addr,X [absolute indexed RMW X] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_SRE, Uop.AbsIdx_RMW_Stage7, Uop.End }, + //0x60 + /*RTS*/ new Uop[] { Uop.FetchDummy, Uop.IncS, Uop.PullPCL, Uop.PullPCH_NoInc, Uop.IncPC, Uop.End }, //can't fetch here because the PC isnt ready until the end of the last clock + /*ADC (addr,X) [indexed indirect READ]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_ADC, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*RRA* (addr,X) [indexed indirect RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_RMW, Uop.IdxInd_Stage7_RMW_RRA, Uop.IdxInd_Stage8_RMW, Uop.End }, + /*NOP zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_NOP, Uop.End }, + /*ADC zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_ADC, Uop.End }, + /*ROR zp [zero page RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_ROR, Uop.ZP_RMW_Stage5, Uop.End }, + /*RRA* zp [zero page RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_RRA, Uop.ZP_RMW_Stage5, Uop.End }, + /*PLA [implied]*/ new Uop[] { Uop.FetchDummy, Uop.IncS, Uop.PullA_NoInc, Uop.End }, + /*ADC #nn [immediate]*/ new Uop[] { Uop.Imm_ADC, Uop.End }, + /*ROR A [accumulator]*/ new Uop[] { Uop.Imp_ROR_A, Uop.End }, + /*ARR** [immediate] [unofficial]*/ new Uop[] { Uop.Imm_ARR, Uop.End }, + /*JMP (addr) [absolute indirect JMP]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.AbsInd_JMP_Stage4, Uop.AbsInd_JMP_Stage5, Uop.End }, + /*ADC addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_ADC, Uop.End }, + /*ROR addr [absolute RMW]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_ROR, Uop.Abs_RMW_Stage6, Uop.End }, + /*RRA* addr [absolute RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_RRA, Uop.Abs_RMW_Stage6, Uop.End }, + //0x70 + /*BVS +/-rel [relative]*/ new Uop[] { Uop.RelBranch_Stage2_BVS, Uop.End }, + /*ADC (addr),Y [indirect indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_ADC, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*RRA* (addr),Y [indirect indexed RMW Y] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_RMW_Stage5, Uop.IndIdx_RMW_Stage6, Uop.IndIdx_RMW_Stage7_RRA, Uop.IndIdx_RMW_Stage8, Uop.End }, + /*NOP zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_NOP, Uop.End }, + /*ADC zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_ADC, Uop.End }, + /*ROR zp,X [zero page indexed RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_ROR, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*RRA* zp,X [zero page indexed RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_RRA, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*SEI [implied]*/ new Uop[] { Uop.Imp_SEI, Uop.End_ISpecial }, + /*ADC addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_ADC, Uop.End }, + /*NOP 7A [implied]*/ new Uop[] { Uop.FetchDummy, Uop.End }, + /*RRA* addr,Y [absolute indexed RMW Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_RRA, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*NOP addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_NOP, Uop.End }, + /*ADC addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_ADC, Uop.End }, + /*ROR addr,X [absolute indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_ROR, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*RRA* addr,X [absolute indexed RMW X] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_RRA, Uop.AbsIdx_RMW_Stage7, Uop.End }, + //0x80 + /*NOP #nn [immediate]*/ new Uop[] { Uop.Imm_Unsupported, Uop.End }, + /*STA (addr,X) [indexed indirect WRITE]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_WRITE_STA, Uop.End }, + /*NOP #nn [immediate]*/ new Uop[] { Uop.Imm_Unsupported, Uop.End }, //jams very rarely + /*SAX* (addr,X) [indexed indirect WRITE] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_WRITE_SAX, Uop.End }, + /*STY zp [zero page WRITE]*/ new Uop[] { Uop.Fetch2, Uop.ZP_WRITE_STY, Uop.End }, + /*STA zp [zero page WRITE]*/ new Uop[] { Uop.Fetch2, Uop.ZP_WRITE_STA, Uop.End }, + /*STX zp [zero page WRITE]*/ new Uop[] { Uop.Fetch2, Uop.ZP_WRITE_STX, Uop.End }, + /*SAX* zp [zero page WRITE] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_WRITE_SAX, Uop.End }, + /*DEY [implied]*/ new Uop[] { Uop.Imp_DEY, Uop.End }, + /*NOP #nn [immediate]*/ new Uop[] { Uop.Imm_Unsupported, Uop.End }, + /*TXA [implied]*/ new Uop[] { Uop.Imp_TXA, Uop.End }, + /*ANE** [immediate] [unofficial]*/ new Uop[] { Uop.Imm_Unsupported, Uop.End }, + /*STY addr [absolute WRITE]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_WRITE_STY, Uop.End }, + /*STA addr [absolute WRITE]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_WRITE_STA, Uop.End }, + /*STX addr [absolute WRITE]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_WRITE_STX, Uop.End }, + /*SAX* addr [absolute WRITE] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_WRITE_SAX, Uop.End }, + //0x90 + /*BCC +/-rel [relative]*/ new Uop[] { Uop.RelBranch_Stage2_BCC, Uop.End }, + /*STA (addr),Y [indirect indexed WRITE]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_WRITE_Stage5, Uop.IndIdx_WRITE_Stage6_STA, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*SHA** [indirect indexed WRITE] [unofficial] [not tested by blargg's instruction tests]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_WRITE_Stage5, Uop.IndIdx_WRITE_Stage6_SHA, Uop.End }, + /*STY zp,X [zero page indexed WRITE X]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_WRITE_STY, Uop.End }, + /*STA zp,X [zero page indexed WRITE X]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_WRITE_STA, Uop.End }, + /*STX zp,Y [zero page indexed WRITE Y]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_Y, Uop.ZP_WRITE_STX, Uop.End }, + /*SAX* zp,Y [zero page indexed WRITE Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_Y, Uop.ZP_WRITE_SAX, Uop.End }, + /*TYA [implied]*/ new Uop[] { Uop.Imp_TYA, Uop.End }, + /*STA addr,Y [absolute indexed WRITE]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_WRITE_Stage5_STA, Uop.End }, + /*TXS [implied]*/ new Uop[] { Uop.Imp_TXS, Uop.End }, + /*SHS* addr,Y [absolute indexed WRITE Y] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_WRITE_Stage5_ERROR, Uop.End }, + /*SHY** [absolute indexed WRITE] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_WRITE_Stage5_SHY, Uop.End }, + /*STA addr,X [absolute indexed WRITE]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_WRITE_Stage5_STA, Uop.End }, + /*SHX* addr,Y [absolute indexed WRITE Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_WRITE_Stage5_SHX, Uop.End }, + /*SHA* addr,Y [absolute indexed WRITE Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_WRITE_Stage5_SHY, Uop.End }, + //0xA0 + /*LDY #nn [immediate]*/ new Uop[] { Uop.Imm_LDY, Uop.End }, + /*LDA (addr,X) [indexed indirect READ]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_LDA, Uop.End }, + /*LDX #nn [immediate]*/ new Uop[] { Uop.Imm_LDX, Uop.End }, + /*LAX* (addr,X) [indexed indirect READ] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_LAX, Uop.End }, + /*LDY zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_LDY, Uop.End }, + /*LDA zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_LDA, Uop.End }, + /*LDX zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_LDX, Uop.End }, + /*LAX* zp [zero page READ] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_LAX, Uop.End }, + /*TAY [implied]*/ new Uop[] { Uop.Imp_TAY, Uop.End }, + /*LDA #nn [immediate]*/ new Uop[] { Uop.Imm_LDA, Uop.End }, + /*TAX [implied]*/ new Uop[] { Uop.Imp_TAX, Uop.End }, + /*LXA** (ATX) [immediate] [unofficial]*/ new Uop[] { Uop.Imm_LXA, Uop.End }, + /*LDY addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_LDY, Uop.End }, + /*LDA addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_LDA, Uop.End }, + /*LDX addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_LDX, Uop.End }, + /*LAX* addr [absolute READ] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_LAX, Uop.End }, + //0xB0 + /*BCS +/-rel [relative]*/ new Uop[] { Uop.RelBranch_Stage2_BCS, Uop.End }, + /*LDA (addr),Y* [indirect indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_LDA, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*LAX* (addr),Y* [indirect indexed READ] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_LAX, Uop.End }, + /*LDY zp,X [zero page indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_LDY, Uop.End }, + /*LDA zp,X [zero page indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_LDA, Uop.End }, + /*LDX zp,Y [zero page indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_Y, Uop.ZP_READ_LDX, Uop.End }, + /*LAX* zp,Y [zero page indexed READ] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_Y, Uop.ZP_READ_LAX, Uop.End }, + /*CLV [implied]*/ new Uop[] { Uop.Imp_CLV, Uop.End }, + /*LDA addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_LDA, Uop.End }, + /*TSX [implied]*/ new Uop[] { Uop.Imp_TSX, Uop.End }, + /*LAS* addr,Y [absolute indexed READ Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_ERROR, Uop.End }, + /*LDY addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_LDY, Uop.End }, + /*LDA addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_LDA, Uop.End }, + /*LDX addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_LDX, Uop.End }, + /*LAX* addr,Y [absolute indexed READ Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_LAX, Uop.End }, + //0xC0 + /*CPY #nn [immediate]*/ new Uop[] { Uop.Imm_CPY, Uop.End }, + /*CMP (addr,X) [indexed indirect READ]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_CMP, Uop.End }, + /*NOP #nn [immediate]*/ new Uop[] { Uop.Imm_Unsupported, Uop.End }, //jams very rarely + /*DCP* (addr,X) [indexed indirect RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_RMW, Uop.IdxInd_Stage7_RMW_DCP, Uop.IdxInd_Stage8_RMW, Uop.End }, + /*CPY zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_CPY, Uop.End }, + /*CMP zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_CMP, Uop.End }, + /*DEC zp [zero page RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_DEC, Uop.ZP_RMW_Stage5, Uop.End }, + /*DCP* zp [zero page RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_DCP, Uop.ZP_RMW_Stage5, Uop.End }, + /*INY [implied]*/ new Uop[] { Uop.Imp_INY, Uop.End }, + /*CMP #nn [immediate]*/ new Uop[] { Uop.Imm_CMP, Uop.End }, + /*DEX [implied]*/ new Uop[] { Uop.Imp_DEX, Uop.End }, + /*AXS** [immediate] [unofficial]*/ new Uop[] { Uop.Imm_AXS, Uop.End }, + /*CPY addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_CPY, Uop.End }, + /*CMP addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_CMP, Uop.End }, + /*DEC addr [absolute RMW]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_DEC, Uop.Abs_RMW_Stage6, Uop.End }, + /*DCP* addr [absolute RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_DCP, Uop.Abs_RMW_Stage6, Uop.End }, + //0xD0 + /*BNE +/-rel [relative]*/ new Uop[] { Uop.RelBranch_Stage2_BNE, Uop.End }, + /*CMP (addr),Y* [indirect indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_CMP, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*DCP* (addr),Y* [indirect indexed RMW Y] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_RMW_Stage5, Uop.IndIdx_RMW_Stage6, Uop.IndIdx_RMW_Stage7_DCP, Uop.IndIdx_RMW_Stage8, Uop.End }, + /*NOP zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_NOP, Uop.End }, + /*CMP zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_CMP, Uop.End }, + /*DEC zp,X [zero page indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_DEC, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*DCP* zp,X [zero page indexed RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_DCP, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*CLD [implied]*/ new Uop[] { Uop.Imp_CLD, Uop.End }, + /*CMP addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_CMP, Uop.End }, + /*NOP DA [implied]*/ new Uop[] { Uop.FetchDummy, Uop.End }, + /*DCP* addr,Y [absolute indexed RMW Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_DCP, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*NOP addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_NOP, Uop.End }, + /*CMP addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_CMP, Uop.End }, + /*DEC addr,X [absolute indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_DEC, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*DCP* addr,X [absolute indexed RMW X] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_DCP, Uop.AbsIdx_RMW_Stage7, Uop.End }, + //0xE0 + /*CPX #nn [immediate]*/ new Uop[] { Uop.Imm_CPX, Uop.End }, + /*SBC (addr,X) [indirect indexed]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_READ_SBC, Uop.End }, + /*NOP #nn [immediate]*/ new Uop[] { Uop.Imm_Unsupported, Uop.End }, //jams very rarely + /*ISC* (addr,X) [indexed indirect RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.IdxInd_Stage3, Uop.IdxInd_Stage4, Uop.IdxInd_Stage5, Uop.IdxInd_Stage6_RMW, Uop.IdxInd_Stage7_RMW_ISC, Uop.IdxInd_Stage8_RMW, Uop.End }, + /*CPX zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_CPX, Uop.End }, + /*SBC zp [zero page READ]*/ new Uop[] { Uop.Fetch2, Uop.ZP_READ_SBC, Uop.End }, + /*INC zp [zero page RMW]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_INC, Uop.ZP_RMW_Stage5, Uop.End }, + /*ISB* zp [zero page RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZP_RMW_Stage3, Uop.ZP_RMW_ISC, Uop.ZP_RMW_Stage5, Uop.End }, + /*INX [implied]*/ new Uop[] { Uop.Imp_INX, Uop.End }, + /*SBC #nn [immediate READ]*/ new Uop[] { Uop.Imm_SBC, Uop.End }, + /*NOP EA [implied]*/ new Uop[] { Uop.FetchDummy, Uop.End }, //nothing happened here.. but the last thing to happen was a fetch, so we can't pipeline the next fetch + /*ISB #nn [immediate READ]*/ new Uop[] { Uop.Imm_SBC, Uop.End }, + /*CPX addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_CPX, Uop.End }, + /*SBC addr [absolute READ]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_READ_SBC, Uop.End }, + /*INC addr [absolute RMW]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_INC, Uop.Abs_RMW_Stage6, Uop.End }, + /*ISC* addr [absolute RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.Fetch3, Uop.Abs_RMW_Stage4, Uop.Abs_RMW_Stage5_ISC, Uop.Abs_RMW_Stage6, Uop.End }, + //0xF0 + /*BEQ +/-rel [relative]*/ new Uop[] { Uop.RelBranch_Stage2_BEQ, Uop.End }, + /*SBC (addr),Y* [indirect indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_READ_Stage5, Uop.IndIdx_READ_Stage6_SBC, Uop.End }, + /*JAM*/ new Uop[] { Uop.Jam }, + /*ISC* (addr),Y* [indirect indexed RMW Y] [unofficial] */ new Uop[] { Uop.Fetch2, Uop.IndIdx_Stage3, Uop.IndIdx_Stage4, Uop.IndIdx_RMW_Stage5, Uop.IndIdx_RMW_Stage6, Uop.IndIdx_RMW_Stage7_ISC, Uop.IndIdx_RMW_Stage8, Uop.End }, + /*NOP zp,X [zero page indexed READ]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_NOP, Uop.End }, + /*SBC zp,X [zero page indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZP_READ_SBC, Uop.End }, + /*INC zp,X [zero page indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_INC, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*ISC* zp,X [zero page indexed RMW] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.ZpIdx_Stage3_X, Uop.ZpIdx_RMW_Stage4, Uop.ZP_RMW_ISC, Uop.ZpIdx_RMW_Stage6, Uop.End }, + /*SED [implied]*/ new Uop[] { Uop.Imp_SED, Uop.End }, + /*SBC addr,Y* [absolute indexed READ Y]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_SBC, Uop.End }, + /*NOP FA [implied]*/ new Uop[] { Uop.FetchDummy, Uop.End }, + /*ISC* addr,Y [absolute indexed RMW Y] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_ISC, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*NOP addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_NOP, Uop.End }, + /*SBC addr,X* [absolute indexed READ X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_READ_Stage4, Uop.AbsIdx_READ_Stage5_SBC, Uop.End }, + /*INC addr,X [absolute indexed RMW X]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_INC, Uop.AbsIdx_RMW_Stage7, Uop.End }, + /*ISC* addr,X [absolute indexed RMW X] [unofficial]*/ new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_X, Uop.AbsIdx_Stage4, Uop.AbsIdx_RMW_Stage5, Uop.AbsIdx_RMW_Stage6_ISC, Uop.AbsIdx_RMW_Stage7, Uop.End }, + //0x100 + /*VOP_Fetch1*/ new Uop[] { Uop.Fetch1 }, + /*VOP_RelativeStuff*/ new Uop[] { Uop.RelBranch_Stage3, Uop.End_BranchSpecial }, + /*VOP_RelativeStuff2*/ new Uop[] { Uop.RelBranch_Stage4, Uop.End }, + /*VOP_RelativeStuff2*/ new Uop[] { Uop.End_SuppressInterrupt }, + //i assume these are dummy fetches.... maybe theyre just nops? supposedly these take 7 cycles so thats the only way i can make sense of it + //one of them might be the next instruction's fetch, and whatever fetch follows it. + //the interrupt would then take place if necessary, using a cached PC. but im not so sure about that. + /*VOP_NMI*/ new Uop[] { Uop.FetchDummy, Uop.FetchDummy, Uop.PushPCH, Uop.PushPCL, Uop.PushP_NMI, Uop.FetchPCLVector, Uop.FetchPCHVector, Uop.End_SuppressInterrupt }, + /*VOP_IRQ*/ new Uop[] { Uop.FetchDummy, Uop.FetchDummy, Uop.PushPCH, Uop.PushPCL, Uop.PushP_IRQ, Uop.FetchPCLVector, Uop.FetchPCHVector, Uop.End_SuppressInterrupt }, + /*VOP_RESET*/ new Uop[] { Uop.FetchDummy, Uop.FetchDummy, Uop.PushDummy, Uop.PushDummy, Uop.PushP_Reset, Uop.FetchPCLVector, Uop.FetchPCHVector, Uop.End_SuppressInterrupt }, + /*VOP_Fetch1_NoInterrupt*/ new Uop[] { Uop.Fetch1_Real }, + }; + + /* + static MOS6502X() + { + using (System.IO.StreamWriter sw = new System.IO.StreamWriter("UopEnum.h")) + { + sw.WriteLine("// AUTOGENERATED"); + sw.WriteLine("#ifndef UOPENUM_H"); + sw.WriteLine("#define UOPENUM_H"); + sw.WriteLine("enum Uop {"); + foreach (var v in Enum.GetValues(typeof(Uop))) + { + //sw.WriteLine("#define Uop_{0} {1}", (Uop)v, (int)v); + sw.WriteLine("\tUop_{0}, ", (Uop)v); + } + sw.WriteLine("};"); + sw.WriteLine("#endif // UOPENUM_H"); + } + using (System.IO.StreamWriter sw = new System.IO.StreamWriter("UopTable.cpp")) + { + sw.WriteLine("// AUTOGENERATED"); + sw.WriteLine("#include \"UopEnum.h\""); + + int max = 0; + foreach (var a in Microcode) + if (a.Length > max) + max = a.Length; + + sw.WriteLine("const Uop Microcode[{0}][{1}] = {{", Microcode.Length, max); + for (int i = 0; i < Microcode.Length; i++) + { + sw.Write("\t{"); + for (int j = 0; j < Microcode[i].Length; j++) + { + sw.Write("Uop_{0}", Microcode[i][j]); + if (j < Microcode[i].Length - 1) + sw.Write(", "); + } + sw.WriteLine("},"); + } + sw.WriteLine("};"); + } + } + */ + + enum Uop + { + //sometimes i used this as a marker for unsupported instructions, but it is very inconsistent + Unsupported, + + Fetch1, Fetch1_Real, Fetch2, Fetch3, + //used by instructions with no second opcode byte (6502 fetches a byte anyway but won't increment PC for these) + FetchDummy, + + NOP, + + JSR, + IncPC, //from RTS + + //[absolute WRITE] + Abs_WRITE_STA, Abs_WRITE_STX, Abs_WRITE_STY, + Abs_WRITE_SAX, //unofficials + //[absolute READ] + Abs_READ_BIT, Abs_READ_LDA, Abs_READ_LDY, Abs_READ_ORA, Abs_READ_LDX, Abs_READ_CMP, Abs_READ_ADC, Abs_READ_CPX, Abs_READ_SBC, Abs_READ_AND, Abs_READ_EOR, Abs_READ_CPY, Abs_READ_NOP, + Abs_READ_LAX, //unofficials + //[absolute RMW] + Abs_RMW_Stage4, Abs_RMW_Stage6, + Abs_RMW_Stage5_INC, Abs_RMW_Stage5_DEC, Abs_RMW_Stage5_LSR, Abs_RMW_Stage5_ROL, Abs_RMW_Stage5_ASL, Abs_RMW_Stage5_ROR, + Abs_RMW_Stage5_SLO, Abs_RMW_Stage5_RLA, Abs_RMW_Stage5_SRE, Abs_RMW_Stage5_RRA, Abs_RMW_Stage5_DCP, Abs_RMW_Stage5_ISC, //unofficials + + //[absolute JUMP] + JMP_abs, + + //[zero page misc] + ZpIdx_Stage3_X, ZpIdx_Stage3_Y, + ZpIdx_RMW_Stage4, ZpIdx_RMW_Stage6, + //[zero page WRITE] + ZP_WRITE_STA, ZP_WRITE_STX, ZP_WRITE_STY, ZP_WRITE_SAX, + //[zero page RMW] + ZP_RMW_Stage3, ZP_RMW_Stage5, + ZP_RMW_DEC, ZP_RMW_INC, ZP_RMW_ASL, ZP_RMW_LSR, ZP_RMW_ROR, ZP_RMW_ROL, + ZP_RMW_SLO, ZP_RMW_RLA, ZP_RMW_SRE, ZP_RMW_RRA, ZP_RMW_DCP, ZP_RMW_ISC, + //[zero page READ] + ZP_READ_EOR, ZP_READ_BIT, ZP_READ_ORA, ZP_READ_LDA, ZP_READ_LDY, ZP_READ_LDX, ZP_READ_CPX, ZP_READ_SBC, ZP_READ_CPY, ZP_READ_NOP, ZP_READ_ADC, ZP_READ_AND, ZP_READ_CMP, ZP_READ_LAX, + + //[indexed indirect READ] (addr,X) + //[indexed indirect WRITE] (addr,X) + IdxInd_Stage3, IdxInd_Stage4, IdxInd_Stage5, + IdxInd_Stage6_READ_ORA, IdxInd_Stage6_READ_SBC, IdxInd_Stage6_READ_LDA, IdxInd_Stage6_READ_EOR, IdxInd_Stage6_READ_CMP, IdxInd_Stage6_READ_ADC, IdxInd_Stage6_READ_AND, + IdxInd_Stage6_READ_LAX, + IdxInd_Stage6_WRITE_STA, IdxInd_Stage6_WRITE_SAX, + IdxInd_Stage6_RMW, //work happens in stage 7 + IdxInd_Stage7_RMW_SLO, IdxInd_Stage7_RMW_RLA, IdxInd_Stage7_RMW_SRE, IdxInd_Stage7_RMW_RRA, IdxInd_Stage7_RMW_ISC, IdxInd_Stage7_RMW_DCP, //unofficials + IdxInd_Stage8_RMW, + + //[absolute indexed] + AbsIdx_Stage3_X, AbsIdx_Stage3_Y, AbsIdx_Stage4, + //[absolute indexed WRITE] + AbsIdx_WRITE_Stage5_STA, + AbsIdx_WRITE_Stage5_SHY, AbsIdx_WRITE_Stage5_SHX, //unofficials + AbsIdx_WRITE_Stage5_ERROR, + //[absolute indexed READ] + AbsIdx_READ_Stage4, + AbsIdx_READ_Stage5_LDA, AbsIdx_READ_Stage5_CMP, AbsIdx_READ_Stage5_SBC, AbsIdx_READ_Stage5_ADC, AbsIdx_READ_Stage5_EOR, AbsIdx_READ_Stage5_LDX, AbsIdx_READ_Stage5_AND, AbsIdx_READ_Stage5_ORA, AbsIdx_READ_Stage5_LDY, AbsIdx_READ_Stage5_NOP, + AbsIdx_READ_Stage5_LAX, //unofficials + AbsIdx_READ_Stage5_ERROR, + //[absolute indexed RMW] + AbsIdx_RMW_Stage5, AbsIdx_RMW_Stage7, + AbsIdx_RMW_Stage6_ROR, AbsIdx_RMW_Stage6_DEC, AbsIdx_RMW_Stage6_INC, AbsIdx_RMW_Stage6_ASL, AbsIdx_RMW_Stage6_LSR, AbsIdx_RMW_Stage6_ROL, + AbsIdx_RMW_Stage6_SLO, AbsIdx_RMW_Stage6_RLA, AbsIdx_RMW_Stage6_SRE, AbsIdx_RMW_Stage6_RRA, AbsIdx_RMW_Stage6_DCP, AbsIdx_RMW_Stage6_ISC, //unofficials + + IncS, DecS, + PushPCL, PushPCH, PushP, PullP, PullPCL, PullPCH_NoInc, PushA, PullA_NoInc, PullP_NoInc, + PushP_BRK, PushP_NMI, PushP_IRQ, PushP_Reset, PushDummy, + FetchPCLVector, FetchPCHVector, //todo - may not need these ?? can reuse fetch2 and fetch3? + + //[implied] and [accumulator] + Imp_ASL_A, Imp_ROL_A, Imp_ROR_A, Imp_LSR_A, + Imp_SEC, Imp_CLI, Imp_SEI, Imp_CLD, Imp_CLC, Imp_CLV, Imp_SED, + Imp_INY, Imp_DEY, Imp_INX, Imp_DEX, + Imp_TSX, Imp_TXS, Imp_TAX, Imp_TAY, Imp_TYA, Imp_TXA, + + //[immediate] + Imm_CMP, Imm_ADC, Imm_AND, Imm_SBC, Imm_ORA, Imm_EOR, Imm_CPY, Imm_CPX, Imm_ANC, Imm_ASR, Imm_ARR, Imm_LXA, Imm_AXS, + Imm_LDA, Imm_LDX, Imm_LDY, + Imm_Unsupported, + + //sub-ops + NZ_X, NZ_Y, NZ_A, + RelBranch_Stage2_BNE, RelBranch_Stage2_BPL, RelBranch_Stage2_BCC, RelBranch_Stage2_BCS, RelBranch_Stage2_BEQ, RelBranch_Stage2_BMI, RelBranch_Stage2_BVC, RelBranch_Stage2_BVS, + RelBranch_Stage2, RelBranch_Stage3, RelBranch_Stage4, + _Eor, _Bit, _Cpx, _Cpy, _Cmp, _Adc, _Sbc, _Ora, _And, _Anc, _Asr, _Arr, _Lxa, _Axs, //alu-related sub-ops + + //JMP (addr) 0x6C + AbsInd_JMP_Stage4, AbsInd_JMP_Stage5, + + //[indirect indexed] (i.e. LDA (addr),Y ) + IndIdx_Stage3, IndIdx_Stage4, IndIdx_READ_Stage5, IndIdx_WRITE_Stage5, + IndIdx_WRITE_Stage6_STA, IndIdx_WRITE_Stage6_SHA, + IndIdx_READ_Stage6_LDA, IndIdx_READ_Stage6_CMP, IndIdx_READ_Stage6_ORA, IndIdx_READ_Stage6_SBC, IndIdx_READ_Stage6_ADC, IndIdx_READ_Stage6_AND, IndIdx_READ_Stage6_EOR, + IndIdx_READ_Stage6_LAX, + IndIdx_RMW_Stage5, + IndIdx_RMW_Stage6, //just reads from effective address + IndIdx_RMW_Stage7_SLO, IndIdx_RMW_Stage7_RLA, IndIdx_RMW_Stage7_SRE, IndIdx_RMW_Stage7_RRA, IndIdx_RMW_Stage7_ISC, IndIdx_RMW_Stage7_DCP, //unofficials + IndIdx_RMW_Stage8, + + End, + End_ISpecial, //same as end, but preserves the iflag set by the instruction + End_BranchSpecial, + End_SuppressInterrupt, + + Jam, + } + + void InitOpcodeHandlers() + { + //delegates arent faster than the switch. pretty sure. dont use it. + //opcodeHandlers = new Action[] { + // Unsupported,Fetch1, Fetch1_Real, Fetch2, Fetch3,FetchDummy, + // NOP,JSR,IncPC, + // Abs_WRITE_STA, Abs_WRITE_STX, Abs_WRITE_STY,Abs_WRITE_SAX,Abs_READ_BIT, Abs_READ_LDA, Abs_READ_LDY, Abs_READ_ORA, Abs_READ_LDX, Abs_READ_CMP, Abs_READ_ADC, Abs_READ_CPX, Abs_READ_SBC, Abs_READ_AND, Abs_READ_EOR, Abs_READ_CPY, Abs_READ_NOP, + // Abs_READ_LAX,Abs_RMW_Stage4, Abs_RMW_Stage6,Abs_RMW_Stage5_INC, Abs_RMW_Stage5_DEC, Abs_RMW_Stage5_LSR, Abs_RMW_Stage5_ROL, Abs_RMW_Stage5_ASL, Abs_RMW_Stage5_ROR,Abs_RMW_Stage5_SLO, Abs_RMW_Stage5_RLA, Abs_RMW_Stage5_SRE, Abs_RMW_Stage5_RRA, Abs_RMW_Stage5_DCP, Abs_RMW_Stage5_ISC, + // JMP_abs,ZpIdx_Stage3_X, ZpIdx_Stage3_Y,ZpIdx_RMW_Stage4, ZpIdx_RMW_Stage6,ZP_WRITE_STA, ZP_WRITE_STX, ZP_WRITE_STY, ZP_WRITE_SAX,ZP_RMW_Stage3, ZP_RMW_Stage5, + // ZP_RMW_DEC, ZP_RMW_INC, ZP_RMW_ASL, ZP_RMW_LSR, ZP_RMW_ROR, ZP_RMW_ROL,ZP_RMW_SLO, ZP_RMW_RLA, ZP_RMW_SRE, ZP_RMW_RRA, ZP_RMW_DCP, ZP_RMW_ISC, + // ZP_READ_EOR, ZP_READ_BIT, ZP_READ_ORA, ZP_READ_LDA, ZP_READ_LDY, ZP_READ_LDX, ZP_READ_CPX, ZP_READ_SBC, ZP_READ_CPY, ZP_READ_NOP, ZP_READ_ADC, ZP_READ_AND, ZP_READ_CMP, ZP_READ_LAX, + // IdxInd_Stage3, IdxInd_Stage4, IdxInd_Stage5,IdxInd_Stage6_READ_ORA, IdxInd_Stage6_READ_SBC, IdxInd_Stage6_READ_LDA, IdxInd_Stage6_READ_EOR, IdxInd_Stage6_READ_CMP, IdxInd_Stage6_READ_ADC, IdxInd_Stage6_READ_AND, + // IdxInd_Stage6_READ_LAX,IdxInd_Stage6_WRITE_STA, IdxInd_Stage6_WRITE_SAX,IdxInd_Stage6_RMW,IdxInd_Stage7_RMW_SLO, IdxInd_Stage7_RMW_RLA, IdxInd_Stage7_RMW_SRE, IdxInd_Stage7_RMW_RRA, IdxInd_Stage7_RMW_ISC, IdxInd_Stage7_RMW_DCP, + // IdxInd_Stage8_RMW,AbsIdx_Stage3_X, AbsIdx_Stage3_Y, AbsIdx_Stage4,AbsIdx_WRITE_Stage5_STA,AbsIdx_WRITE_Stage5_SHY, AbsIdx_WRITE_Stage5_SHX,AbsIdx_WRITE_Stage5_ERROR,AbsIdx_READ_Stage4, + // AbsIdx_READ_Stage5_LDA, AbsIdx_READ_Stage5_CMP, AbsIdx_READ_Stage5_SBC, AbsIdx_READ_Stage5_ADC, AbsIdx_READ_Stage5_EOR, AbsIdx_READ_Stage5_LDX, AbsIdx_READ_Stage5_AND, AbsIdx_READ_Stage5_ORA, AbsIdx_READ_Stage5_LDY, AbsIdx_READ_Stage5_NOP, + // AbsIdx_READ_Stage5_LAX,AbsIdx_READ_Stage5_ERROR,AbsIdx_RMW_Stage5, AbsIdx_RMW_Stage7,AbsIdx_RMW_Stage6_ROR, AbsIdx_RMW_Stage6_DEC, AbsIdx_RMW_Stage6_INC, AbsIdx_RMW_Stage6_ASL, AbsIdx_RMW_Stage6_LSR, AbsIdx_RMW_Stage6_ROL, + // AbsIdx_RMW_Stage6_SLO, AbsIdx_RMW_Stage6_RLA, AbsIdx_RMW_Stage6_SRE, AbsIdx_RMW_Stage6_RRA, AbsIdx_RMW_Stage6_DCP, AbsIdx_RMW_Stage6_ISC,IncS, DecS, + // PushPCL, PushPCH, PushP, PullP, PullPCL, PullPCH_NoInc, PushA, PullA_NoInc, PullP_NoInc,PushP_BRK, PushP_NMI, PushP_IRQ, PushP_Reset, PushDummy,FetchPCLVector, FetchPCHVector, + // Imp_ASL_A, Imp_ROL_A, Imp_ROR_A, Imp_LSR_A,Imp_SEC, Imp_CLI, Imp_SEI, Imp_CLD, Imp_CLC, Imp_CLV, Imp_SED,Imp_INY, Imp_DEY, Imp_INX, Imp_DEX,Imp_TSX, Imp_TXS, Imp_TAX, Imp_TAY, Imp_TYA, Imp_TXA, + // Imm_CMP, Imm_ADC, Imm_AND, Imm_SBC, Imm_ORA, Imm_EOR, Imm_CPY, Imm_CPX, Imm_ANC, Imm_ASR, Imm_ARR, Imm_LXA, Imm_AXS,Imm_LDA, Imm_LDX, Imm_LDY, + // Imm_Unsupported,NZ_X, NZ_Y, NZ_A,RelBranch_Stage2_BNE, RelBranch_Stage2_BPL, RelBranch_Stage2_BCC, RelBranch_Stage2_BCS, RelBranch_Stage2_BEQ, RelBranch_Stage2_BMI, RelBranch_Stage2_BVC, RelBranch_Stage2_BVS, + // RelBranch_Stage2, RelBranch_Stage3, RelBranch_Stage4,_Eor, _Bit, _Cpx, _Cpy, _Cmp, _Adc, _Sbc, _Ora, _And, _Anc, _Asr, _Arr, _Lxa, _Axs, + // AbsInd_JMP_Stage4, AbsInd_JMP_Stage5,IndIdx_Stage3, IndIdx_Stage4, IndIdx_READ_Stage5, IndIdx_WRITE_Stage5, + // IndIdx_WRITE_Stage6_STA, IndIdx_WRITE_Stage6_SHA,IndIdx_READ_Stage6_LDA, IndIdx_READ_Stage6_CMP, IndIdx_READ_Stage6_ORA, IndIdx_READ_Stage6_SBC, IndIdx_READ_Stage6_ADC, IndIdx_READ_Stage6_AND, IndIdx_READ_Stage6_EOR, + // IndIdx_READ_Stage6_LAX,IndIdx_RMW_Stage5,IndIdx_RMW_Stage6, IndIdx_RMW_Stage7_SLO, IndIdx_RMW_Stage7_RLA, IndIdx_RMW_Stage7_SRE, IndIdx_RMW_Stage7_RRA, IndIdx_RMW_Stage7_ISC, IndIdx_RMW_Stage7_DCP,IndIdx_RMW_Stage8, + // End,End_ISpecial,End_BranchSpecial,End_SuppressInterrupt, + //}; + } + + const int VOP_Fetch1 = 256; + const int VOP_RelativeStuff = 257; + const int VOP_RelativeStuff2 = 258; + const int VOP_RelativeStuff3 = 259; + const int VOP_NMI = 260; + const int VOP_IRQ = 261; + const int VOP_RESET = 262; + const int VOP_Fetch1_NoInterrupt = 263; + const int VOP_NUM = 264; + + //opcode bytes.. theoretically redundant with the temp variables? who knows. + int opcode; + byte opcode2, opcode3; + + int ea, alu_temp; //cpu internal temp variables + int mi; //microcode index + bool iflag_pending; //iflag must be stored after it is checked in some cases (CLI and SEI). + bool rdy_freeze; //true if the CPU must be frozen + + //tracks whether an interrupt condition has popped up recently. + //not sure if this is real or not but it helps with the branch_irq_hack + bool interrupt_pending; + bool branch_irq_hack; //see Uop.RelBranch_Stage3 for more details + + bool Interrupted + { + get + { + return NMI || (IRQ && !FlagI); + } + } + + void FetchDummy() + { + rdy_freeze = !RDY; + if (RDY) + { + DummyReadMemory(PC); + } + } + + public void Execute(int cycles) + { + for (int i = 0; i < cycles; i++) + { + ExecuteOne(); + } + } + + byte value8, temp8; + ushort value16; + bool branch_taken = false; + bool my_iflag; + bool booltemp; + int tempint; + int lo, hi; + public Action TraceCallback; + + void Fetch1() + { + my_iflag = FlagI; + FlagI = iflag_pending; + if (!branch_irq_hack) + { + interrupt_pending = false; + if (NMI) + { + if (TraceCallback != null) + { + TraceCallback(new TraceInfo + { + Disassembly = "====NMI====", + RegisterInfo = "" + }); + } + + ea = NMIVector; + opcode = VOP_NMI; + NMI = false; + mi = 0; + ExecuteOneRetry(); + return; + } + else if (IRQ && !my_iflag) + { + if (TraceCallback != null) + { + TraceCallback(new TraceInfo + { + Disassembly = "====IRQ====", + RegisterInfo = "" + }); + } + ea = IRQVector; + opcode = VOP_IRQ; + mi = 0; + ExecuteOneRetry(); + return; + } + } + Fetch1_Real(); + } + + void Fetch1_Real() + { + rdy_freeze = !RDY; + if (RDY) + { + if (debug) Console.WriteLine(State()); + branch_irq_hack = false; + if (OnExecFetch != null) OnExecFetch(PC); + if (TraceCallback != null) + TraceCallback(State()); + opcode = ReadMemory(PC++); + mi = -1; + } + } + void Fetch2() + { + rdy_freeze = !RDY; + if (RDY) + { + opcode2 = ReadMemory(PC++); + } + } + void Fetch3() + { + rdy_freeze = !RDY; + if (RDY) + { + opcode3 = ReadMemory(PC++); + } + } + void PushPCH() + { + WriteMemory((ushort)(S-- + 0x100), (byte)(PC >> 8)); + } + void PushPCL() + { + WriteMemory((ushort)(S-- + 0x100), (byte)PC); + } + void PushP_BRK() + { + FlagB = true; + WriteMemory((ushort)(S-- + 0x100), P); + FlagI = true; + ea = BRKVector; + + } + void PushP_IRQ() + { + FlagB = false; + WriteMemory((ushort)(S-- + 0x100), P); + FlagI = true; + ea = IRQVector; + + } + void PushP_NMI() + { + FlagB = false; + WriteMemory((ushort)(S-- + 0x100), P); + FlagI = true; //is this right? + ea = NMIVector; + + } + void PushP_Reset() + { + ea = ResetVector; + S--; + FlagI = true; + + } + void PushDummy() + { + S--; + + } + void FetchPCLVector() + { + rdy_freeze = !RDY; + if (RDY) + { + if (ea == BRKVector && FlagB && NMI) + { + NMI = false; + ea = NMIVector; + } + if (ea == IRQVector && !FlagB && NMI) + { + NMI = false; + ea = NMIVector; + } + alu_temp = ReadMemory((ushort)ea); + } + + } + void FetchPCHVector() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp += ReadMemory((ushort)(ea + 1)) << 8; + PC = (ushort)alu_temp; + } + + } + void Imp_INY() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); Y++; NZ_Y(); + } + } + void Imp_DEY() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); Y--; NZ_Y(); + } + } + void Imp_INX() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); X++; NZ_X(); + } + } + void Imp_DEX() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); X--; NZ_X(); + } + } + void NZ_A() + { + P = (byte)((P & 0x7D) | TableNZ[A]); + } + void NZ_X() + { + P = (byte)((P & 0x7D) | TableNZ[X]); + } + void NZ_Y() + { + P = (byte)((P & 0x7D) | TableNZ[Y]); + + } + void Imp_TSX() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); X = S; NZ_X(); + } + } + void Imp_TXS() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); S = X; + } + } + void Imp_TAX() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); X = A; NZ_X(); + } + } + void Imp_TAY() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); Y = A; NZ_Y(); + } + } + void Imp_TYA() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); A = Y; NZ_A(); + } + } + void Imp_TXA() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); A = X; NZ_A(); + } + + } + void Imp_SEI() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); iflag_pending = true; + } + } + void Imp_CLI() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); iflag_pending = false; + } + } + void Imp_SEC() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); FlagC = true; + } + } + void Imp_CLC() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); FlagC = false; + } + } + void Imp_SED() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); FlagD = true; + } + } + void Imp_CLD() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); FlagD = false; + } + } + void Imp_CLV() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); FlagV = false; + } + + } + void Abs_WRITE_STA() + { + WriteMemory((ushort)((opcode3 << 8) + opcode2), A); + } + void Abs_WRITE_STX() + { + WriteMemory((ushort)((opcode3 << 8) + opcode2), X); + } + void Abs_WRITE_STY() + { + WriteMemory((ushort)((opcode3 << 8) + opcode2), Y); + } + void Abs_WRITE_SAX() + { + WriteMemory((ushort)((opcode3 << 8) + opcode2), (byte)(X & A)); + + } + void ZP_WRITE_STA() + { + WriteMemory(opcode2, A); + } + void ZP_WRITE_STY() + { + WriteMemory(opcode2, Y); + } + void ZP_WRITE_STX() + { + WriteMemory(opcode2, X); + } + void ZP_WRITE_SAX() + { + WriteMemory(opcode2, (byte)(X & A)); + + } + void IndIdx_Stage3() + { + rdy_freeze = !RDY; + if (RDY) + { + ea = ReadMemory(opcode2); + } + + } + void IndIdx_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ea + Y; + ea = (ReadMemory((byte)(opcode2 + 1)) << 8) + | ((alu_temp & 0xFF)); + } + + } + void IndIdx_WRITE_Stage5() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory((ushort)ea); + ea += (alu_temp >> 8) << 8; + } + + } + void IndIdx_READ_Stage5() + { + rdy_freeze = !RDY; + if (RDY) + { + if (!alu_temp.Bit(8)) + { + mi++; + ExecuteOneRetry(); + return; + } + else + { + ReadMemory((ushort)ea); + ea = (ushort)(ea + 0x100); + } + } + } + void IndIdx_RMW_Stage5() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory((ushort)ea); + if (alu_temp.Bit(8)) + ea = (ushort)(ea + 0x100); + + } + + } + void IndIdx_WRITE_Stage6_STA() + { + WriteMemory((ushort)ea, A); + + } + void IndIdx_WRITE_Stage6_SHA() + { + WriteMemory((ushort)ea, (byte)(A & X & 7)); + + } + void IndIdx_READ_Stage6_LDA() + { + rdy_freeze = !RDY; + if (RDY) + { + A = ReadMemory((ushort)ea); + NZ_A(); + } + } + void IndIdx_READ_Stage6_CMP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Cmp(); + } + } + void IndIdx_READ_Stage6_AND() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _And(); + } + } + void IndIdx_READ_Stage6_EOR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Eor(); + } + } + void IndIdx_READ_Stage6_LAX() + { + rdy_freeze = !RDY; + if (RDY) + { + A = X = ReadMemory((ushort)ea); + NZ_A(); + } + } + void IndIdx_READ_Stage6_ADC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Adc(); + } + } + void IndIdx_READ_Stage6_SBC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Sbc(); + } + } + void IndIdx_READ_Stage6_ORA() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Ora(); + } + } + void IndIdx_RMW_Stage6() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + } + + } + void IndIdx_RMW_Stage7_SLO() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)((value8 << 1)); + A |= value8; + NZ_A(); + } + void IndIdx_RMW_Stage7_SRE() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + A ^= value8; + NZ_A(); + } + void IndIdx_RMW_Stage7_RRA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + _Adc(); + } + void IndIdx_RMW_Stage7_ISC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)(value8 + 1); + _Sbc(); + } + void IndIdx_RMW_Stage7_DCP() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)(value8 - 1); + FlagC = (temp8 & 1) != 0; + _Cmp(); + } + void IndIdx_RMW_Stage7_RLA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + A &= value8; + NZ_A(); + } + void IndIdx_RMW_Stage8() + { + WriteMemory((ushort)ea, (byte)alu_temp); + } + void RelBranch_Stage2_BVS() + { + branch_taken = FlagV == true; + RelBranch_Stage2(); + } + void RelBranch_Stage2_BVC() + { + branch_taken = FlagV == false; + RelBranch_Stage2(); + } + void RelBranch_Stage2_BMI() + { + branch_taken = FlagN == true; + RelBranch_Stage2(); + } + void RelBranch_Stage2_BPL() + { + branch_taken = FlagN == false; + RelBranch_Stage2(); + } + void RelBranch_Stage2_BCS() + { + branch_taken = FlagC == true; + RelBranch_Stage2(); + } + void RelBranch_Stage2_BCC() + { + branch_taken = FlagC == false; + RelBranch_Stage2(); + } + void RelBranch_Stage2_BEQ() + { + branch_taken = FlagZ == true; + RelBranch_Stage2(); + } + void RelBranch_Stage2_BNE() + { + branch_taken = FlagZ == false; + RelBranch_Stage2(); + + } + void RelBranch_Stage2() + { + rdy_freeze = !RDY; + if (RDY) + { + opcode2 = ReadMemory(PC++); + if (branch_taken) + { + branch_taken = false; + //if the branch is taken, we enter a different bit of microcode to calculate the PC and complete the branch + opcode = VOP_RelativeStuff; + mi = -1; + } + } + + } + void RelBranch_Stage3() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); + alu_temp = (byte)PC + (int)(sbyte)opcode2; + PC &= 0xFF00; + PC |= (ushort)((alu_temp & 0xFF)); + if (alu_temp.Bit(8)) + { + //we need to carry the add, and then we'll be ready to fetch the next instruction + opcode = VOP_RelativeStuff2; + mi = -1; + } + else + { + //to pass cpu_interrupts_v2/5-branch_delays_irq we need to handle a quirk here + //if we decide to interrupt in the next cycle, this condition will cause it to get deferred by one instruction + if (!interrupt_pending) + branch_irq_hack = true; + } + } + } + void RelBranch_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); + if (alu_temp.Bit(31)) + PC = (ushort)(PC - 0x100); + else PC = (ushort)(PC + 0x100); + } + } + void NOP() + { + rdy_freeze = !RDY; + } + void DecS() + { + rdy_freeze = !RDY; + if (RDY) + { + S--; + } + } + void IncS() + { + rdy_freeze = !RDY; + if (RDY) + { + S++; + } + } + void JSR() + { + rdy_freeze = !RDY; + if (RDY) + { + PC = (ushort)((ReadMemory((ushort)(PC)) << 8) + opcode2); + } + } + void PullP() + { + rdy_freeze = !RDY; + if (RDY) + { + P = ReadMemory((ushort)(S++ + 0x100)); + FlagT = true; //force T always to remain true + } + + } + void PullPCL() + { + rdy_freeze = !RDY; + if (RDY) + { + PC &= 0xFF00; + PC |= ReadMemory((ushort)(S++ + 0x100)); + } + + } + void PullPCH_NoInc() + { + rdy_freeze = !RDY; + if (RDY) + { + PC &= 0xFF; + PC |= (ushort)(ReadMemory((ushort)(S + 0x100)) << 8); + } + + } + void Abs_READ_LDA() + { + rdy_freeze = !RDY; + if (RDY) + { + A = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + NZ_A(); + } + } + void Abs_READ_LDY() + { + rdy_freeze = !RDY; + if (RDY) + { + Y = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + NZ_Y(); + } + } + void Abs_READ_LDX() + { + rdy_freeze = !RDY; + if (RDY) + { + X = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + NZ_X(); + } + } + void Abs_READ_BIT() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Bit(); + } + } + void Abs_READ_LAX() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + A = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + X = A; + NZ_A(); + } + } + void Abs_READ_AND() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _And(); + } + } + void Abs_READ_EOR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Eor(); + } + } + void Abs_READ_ORA() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Ora(); + } + } + void Abs_READ_ADC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Adc(); + } + } + void Abs_READ_CMP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Cmp(); + } + } + void Abs_READ_CPY() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Cpy(); + } + } + void Abs_READ_NOP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + } + + } + void Abs_READ_CPX() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Cpx(); + } + } + void Abs_READ_SBC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)((opcode3 << 8) + opcode2)); + _Sbc(); + } + + } + void ZpIdx_Stage3_X() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory(opcode2); + opcode2 = (byte)(opcode2 + X); //a bit sneaky to shove this into opcode2... but we can reuse all the zero page uops if we do that + } + + } + void ZpIdx_Stage3_Y() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory(opcode2); + opcode2 = (byte)(opcode2 + Y); //a bit sneaky to shove this into opcode2... but we can reuse all the zero page uops if we do that + } + + } + void ZpIdx_RMW_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + } + + } + void ZpIdx_RMW_Stage6() + { + WriteMemory(opcode2, (byte)alu_temp); + + + } + void ZP_READ_EOR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Eor(); + } + } + void ZP_READ_BIT() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Bit(); + } + } + void ZP_READ_LDA() + { + rdy_freeze = !RDY; + if (RDY) + { + A = ReadMemory(opcode2); + NZ_A(); + } + } + void ZP_READ_LDY() + { + rdy_freeze = !RDY; + if (RDY) + { + Y = ReadMemory(opcode2); + NZ_Y(); + } + } + void ZP_READ_LDX() + { + rdy_freeze = !RDY; + if (RDY) + { + X = ReadMemory(opcode2); + NZ_X(); + } + } + void ZP_READ_LAX() + { + rdy_freeze = !RDY; + if (RDY) + { + //?? is this right?? + X = ReadMemory(opcode2); + A = X; + NZ_A(); + } + } + void ZP_READ_CPY() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Cpy(); + } + } + void ZP_READ_CMP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Cmp(); + } + } + void ZP_READ_CPX() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Cpx(); + } + } + void ZP_READ_ORA() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Ora(); + } + } + void ZP_READ_NOP() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory(opcode2); //just a dummy + } + + } + void ZP_READ_SBC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Sbc(); + } + } + void ZP_READ_ADC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _Adc(); + } + } + void ZP_READ_AND() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + _And(); + } + + } + void _Cpx() + { + value8 = (byte)alu_temp; + value16 = (ushort)(X - value8); + FlagC = (X >= value8); + P = (byte)((P & 0x7D) | TableNZ[(byte)value16]); + + } + void _Cpy() + { + value8 = (byte)alu_temp; + value16 = (ushort)(Y - value8); + FlagC = (Y >= value8); + P = (byte)((P & 0x7D) | TableNZ[(byte)value16]); + + } + void _Cmp() + { + value8 = (byte)alu_temp; + value16 = (ushort)(A - value8); + FlagC = (A >= value8); + P = (byte)((P & 0x7D) | TableNZ[(byte)value16]); + + } + void _Bit() + { + FlagN = (alu_temp & 0x80) != 0; + FlagV = (alu_temp & 0x40) != 0; + FlagZ = (A & alu_temp) == 0; + + } + void _Eor() + { + A ^= (byte)alu_temp; + NZ_A(); + } + void _And() + { + A &= (byte)alu_temp; + NZ_A(); + } + void _Ora() + { + A |= (byte)alu_temp; + NZ_A(); + } + void _Anc() + { + A &= (byte)alu_temp; + FlagC = A.Bit(7); + NZ_A(); + } + void _Asr() + { + A &= (byte)alu_temp; + FlagC = A.Bit(0); + A >>= 1; + NZ_A(); + } + void _Axs() + { + X &= A; + alu_temp = X - (byte)alu_temp; + X = (byte)alu_temp; + FlagC = !alu_temp.Bit(8); + NZ_X(); + } + void _Arr() + { + { + A &= (byte)alu_temp; + booltemp = A.Bit(0); + A = (byte)((A >> 1) | (FlagC ? 0x80 : 0x00)); + FlagC = booltemp; + if (A.Bit(5)) + if (A.Bit(6)) + { FlagC = true; FlagV = false; } + else { FlagV = true; FlagC = false; } + else if (A.Bit(6)) + { FlagV = true; FlagC = true; } + else { FlagV = false; FlagC = false; } + FlagZ = (A == 0); + + } + } + void _Lxa() + { + A |= 0xFF; //there is some debate about what this should be. it may depend on the 6502 variant. this is suggested by qeed's doc for the nes and passes blargg's instruction test + A &= (byte)alu_temp; + X = A; + NZ_A(); + } + void _Sbc() + { + { + value8 = (byte)alu_temp; + tempint = A - value8 - (FlagC ? 0 : 1); + if (FlagD && BCD_Enabled) + { + lo = (A & 0x0F) - (value8 & 0x0F) - (FlagC ? 0 : 1); + hi = (A & 0xF0) - (value8 & 0xF0); + if ((lo & 0xF0) != 0) lo -= 0x06; + if ((lo & 0x80) != 0) hi -= 0x10; + if ((hi & 0x0F00) != 0) hi -= 0x60; + FlagV = ((A ^ value8) & (A ^ tempint) & 0x80) != 0; + FlagC = (hi & 0xFF00) == 0; + A = (byte)((lo & 0x0F) | (hi & 0xF0)); + } + else + { + FlagV = ((A ^ value8) & (A ^ tempint) & 0x80) != 0; + FlagC = tempint >= 0; + A = (byte)tempint; + } + NZ_A(); + } + } + void _Adc() + { + { + //TODO - an extra cycle penalty? + value8 = (byte)alu_temp; + if (FlagD && BCD_Enabled) + { + lo = (A & 0x0F) + (value8 & 0x0F) + (FlagC ? 1 : 0); + hi = (A & 0xF0) + (value8 & 0xF0); + if (lo > 0x09) + { + hi += 0x10; + lo += 0x06; + } + if (hi > 0x90) hi += 0x60; + FlagV = (~(A ^ value8) & (A ^ hi) & 0x80) != 0; + FlagC = hi > 0xFF; + A = (byte)((lo & 0x0F) | (hi & 0xF0)); + } + else + { + tempint = value8 + A + (FlagC ? 1 : 0); + FlagV = (~(A ^ value8) & (A ^ tempint) & 0x80) != 0; + FlagC = tempint > 0xFF; + A = (byte)tempint; + } + NZ_A(); + } + + } + void Unsupported() + { + + + } + void Imm_EOR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Eor(); + } + } + void Imm_ANC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Anc(); + } + } + void Imm_ASR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Asr(); + } + } + void Imm_AXS() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Axs(); + } + } + void Imm_ARR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Arr(); + } + } + void Imm_LXA() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Lxa(); + } + } + void Imm_ORA() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Ora(); + } + } + void Imm_CPY() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Cpy(); + } + } + void Imm_CPX() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Cpx(); + } + } + void Imm_CMP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Cmp(); + } + } + void Imm_SBC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Sbc(); + } + } + void Imm_AND() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _And(); + } + } + void Imm_ADC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(PC++); + _Adc(); + } + } + void Imm_LDA() + { + rdy_freeze = !RDY; + if (RDY) + { + A = ReadMemory(PC++); + NZ_A(); + } + } + void Imm_LDX() + { + rdy_freeze = !RDY; + if (RDY) + { + X = ReadMemory(PC++); + NZ_X(); + } + } + void Imm_LDY() + { + rdy_freeze = !RDY; + if (RDY) + { + Y = ReadMemory(PC++); + NZ_Y(); + } + } + void Imm_Unsupported() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory(PC++); + } + + } + void IdxInd_Stage3() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory(opcode2); //dummy? + alu_temp = (opcode2 + X) & 0xFF; + } + + } + void IdxInd_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + ea = ReadMemory((ushort)alu_temp); + } + + } + void IdxInd_Stage5() + { + rdy_freeze = !RDY; + if (RDY) + { + ea += (ReadMemory((byte)(alu_temp + 1)) << 8); + } + + } + void IdxInd_Stage6_READ_LDA() + { + rdy_freeze = !RDY; + if (RDY) + { + //TODO make uniform with others + A = ReadMemory((ushort)ea); + NZ_A(); + } + } + void IdxInd_Stage6_READ_ORA() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Ora(); + } + } + void IdxInd_Stage6_READ_LAX() + { + rdy_freeze = !RDY; + if (RDY) + { + A = X = ReadMemory((ushort)ea); + NZ_A(); + } + } + void IdxInd_Stage6_READ_CMP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Cmp(); + } + } + void IdxInd_Stage6_READ_ADC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Adc(); + } + } + void IdxInd_Stage6_READ_AND() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _And(); + } + } + void IdxInd_Stage6_READ_EOR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Eor(); + } + } + void IdxInd_Stage6_READ_SBC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Sbc(); + } + } + void IdxInd_Stage6_WRITE_STA() + { + WriteMemory((ushort)ea, A); + + } + void IdxInd_Stage6_WRITE_SAX() + { + alu_temp = A & X; + WriteMemory((ushort)ea, (byte)alu_temp); + //flag writing skipped on purpose + + } + void IdxInd_Stage6_RMW() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + } + + } + void IdxInd_Stage7_RMW_SLO() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)((value8 << 1)); + A |= value8; + NZ_A(); + } + void IdxInd_Stage7_RMW_ISC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + alu_temp = value8 = (byte)(value8 + 1); + _Sbc(); + } + void IdxInd_Stage7_RMW_DCP() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)(value8 - 1); + FlagC = (temp8 & 1) != 0; + _Cmp(); + } + void IdxInd_Stage7_RMW_SRE() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + A ^= value8; + NZ_A(); + } + void IdxInd_Stage7_RMW_RRA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + _Adc(); + } + void IdxInd_Stage7_RMW_RLA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + A &= value8; + NZ_A(); + } + void IdxInd_Stage8_RMW() + { + WriteMemory((ushort)ea, (byte)alu_temp); + + + } + void PushP() + { + FlagB = true; + WriteMemory((ushort)(S-- + 0x100), P); + + } + void PushA() + { + WriteMemory((ushort)(S-- + 0x100), A); + } + void PullA_NoInc() + { + rdy_freeze = !RDY; + if (RDY) + { + A = ReadMemory((ushort)(S + 0x100)); + NZ_A(); + } + } + void PullP_NoInc() + { + rdy_freeze = !RDY; + if (RDY) + { + my_iflag = FlagI; + P = ReadMemory((ushort)(S + 0x100)); + iflag_pending = FlagI; + FlagI = my_iflag; + FlagT = true; //force T always to remain true + + } + + } + void Imp_ASL_A() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); + FlagC = (A & 0x80) != 0; + A = (byte)(A << 1); + NZ_A(); + } + } + void Imp_ROL_A() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); + temp8 = A; + A = (byte)((A << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + NZ_A(); + } + } + void Imp_ROR_A() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); + temp8 = A; + A = (byte)((A >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + NZ_A(); + } + } + void Imp_LSR_A() + { + rdy_freeze = !RDY; + if (RDY) + { + FetchDummy(); + FlagC = (A & 1) != 0; + A = (byte)(A >> 1); + NZ_A(); + } + } + void JMP_abs() + { + rdy_freeze = !RDY; + if (RDY) + { + PC = (ushort)((ReadMemory(PC) << 8) + opcode2); + } + + } + void IncPC() + { + rdy_freeze = !RDY; + if (RDY) + { + ReadMemory(PC); + PC++; + } + } + void ZP_RMW_Stage3() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory(opcode2); + } + + } + void ZP_RMW_Stage5() + { + WriteMemory(opcode2, (byte)alu_temp); + } + void ZP_RMW_INC() + { + WriteMemory(opcode2, (byte)alu_temp); + alu_temp = (byte)((alu_temp + 1) & 0xFF); + P = (byte)((P & 0x7D) | TableNZ[alu_temp]); + } + void ZP_RMW_DEC() + { + WriteMemory(opcode2, (byte)alu_temp); + alu_temp = (byte)((alu_temp - 1) & 0xFF); + P = (byte)((P & 0x7D) | TableNZ[alu_temp]); + } + void ZP_RMW_ASL() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)(value8 << 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + } + void ZP_RMW_SRE() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + A ^= value8; + NZ_A(); + } + void ZP_RMW_RRA() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + _Adc(); + } + void ZP_RMW_DCP() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)(value8 - 1); + FlagC = (temp8 & 1) != 0; + _Cmp(); + } + void ZP_RMW_LSR() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void ZP_RMW_ROR() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + P = (byte)((P & 0x7D) | TableNZ[value8]); + } + void ZP_RMW_ROL() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + P = (byte)((P & 0x7D) | TableNZ[value8]); + } + void ZP_RMW_SLO() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)((value8 << 1)); + A |= value8; + NZ_A(); + } + void ZP_RMW_ISC() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = (byte)alu_temp; + alu_temp = value8 = (byte)(value8 + 1); + _Sbc(); + } + void ZP_RMW_RLA() + { + WriteMemory(opcode2, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + A &= value8; + NZ_A(); + } + void AbsIdx_Stage3_Y() + { + rdy_freeze = !RDY; + if (RDY) + { + opcode3 = ReadMemory(PC++); + alu_temp = opcode2 + Y; + ea = (opcode3 << 8) + (alu_temp & 0xFF); + + //new Uop[] { Uop.Fetch2, Uop.AbsIdx_Stage3_Y, Uop.AbsIdx_Stage4, Uop.AbsIdx_WRITE_Stage5_STA, Uop.End }, + } + } + void AbsIdx_Stage3_X() + { + rdy_freeze = !RDY; + if (RDY) + { + opcode3 = ReadMemory(PC++); + alu_temp = opcode2 + X; + ea = (opcode3 << 8) + (alu_temp & 0xFF); + } + + } + void AbsIdx_READ_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + if (!alu_temp.Bit(8)) + { + mi++; + ExecuteOneRetry(); + return; + } + else + { + alu_temp = ReadMemory((ushort)ea); + ea = (ushort)(ea + 0x100); + } + } + + } + void AbsIdx_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + //bleh.. redundant code to make sure we dont clobber alu_temp before using it to decide whether to change ea + + if (alu_temp.Bit(8)) + { + alu_temp = ReadMemory((ushort)ea); + ea = (ushort)(ea + 0x100); + } + else alu_temp = ReadMemory((ushort)ea); + } + + } + void AbsIdx_WRITE_Stage5_STA() + { + WriteMemory((ushort)ea, A); + + } + void AbsIdx_WRITE_Stage5_SHY() + { + alu_temp = Y & (ea >> 8); + ea = (ea & 0xFF) | (alu_temp << 8); //"(the bank where the value is stored may be equal to the value stored)" -- more like IS. + WriteMemory((ushort)ea, (byte)alu_temp); + + } + void AbsIdx_WRITE_Stage5_SHX() + { + alu_temp = X & (ea >> 8); + ea = (ea & 0xFF) | (alu_temp << 8); //"(the bank where the value is stored may be equal to the value stored)" -- more like IS. + WriteMemory((ushort)ea, (byte)alu_temp); + + } + void AbsIdx_WRITE_Stage5_ERROR() + { + S = (byte)(X & A); + WriteMemory((ushort)ea, (byte)(S & (opcode3+1))); + + } + void AbsIdx_RMW_Stage5() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + } + + } + void AbsIdx_RMW_Stage7() + { + WriteMemory((ushort)ea, (byte)alu_temp); + + } + void AbsIdx_RMW_Stage6_DEC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + alu_temp = value8 = (byte)(alu_temp - 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void AbsIdx_RMW_Stage6_DCP() + { + WriteMemory((ushort)ea, (byte)alu_temp); + alu_temp = value8 = (byte)(alu_temp - 1); + _Cmp(); + } + void AbsIdx_RMW_Stage6_ISC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + alu_temp = value8 = (byte)(alu_temp + 1); + _Sbc(); + } + void AbsIdx_RMW_Stage6_INC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + alu_temp = value8 = (byte)(alu_temp + 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void AbsIdx_RMW_Stage6_ROL() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void AbsIdx_RMW_Stage6_LSR() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void AbsIdx_RMW_Stage6_SLO() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)(value8 << 1); + A |= value8; + NZ_A(); + } + void AbsIdx_RMW_Stage6_SRE() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + A ^= value8; + NZ_A(); + } + void AbsIdx_RMW_Stage6_RRA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + _Adc(); + } + void AbsIdx_RMW_Stage6_RLA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + A &= value8; + NZ_A(); + } + void AbsIdx_RMW_Stage6_ASL() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)(value8 << 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void AbsIdx_RMW_Stage6_ROR() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + P = (byte)((P & 0x7D) | TableNZ[value8]); + + + } + void AbsIdx_READ_Stage5_LDA() + { + rdy_freeze = !RDY; + if (RDY) + { + A = ReadMemory((ushort)ea); + NZ_A(); + } + } + void AbsIdx_READ_Stage5_LDX() + { + rdy_freeze = !RDY; + if (RDY) + { + X = ReadMemory((ushort)ea); + NZ_X(); + } + } + void AbsIdx_READ_Stage5_LAX() + { + rdy_freeze = !RDY; + if (RDY) + { + A = ReadMemory((ushort)ea); + X = A; + NZ_A(); + } + } + void AbsIdx_READ_Stage5_LDY() + { + rdy_freeze = !RDY; + if (RDY) + { + Y = ReadMemory((ushort)ea); + NZ_Y(); + } + } + void AbsIdx_READ_Stage5_ORA() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Ora(); + } + } + void AbsIdx_READ_Stage5_NOP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + } + + } + void AbsIdx_READ_Stage5_CMP() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Cmp(); + } + } + void AbsIdx_READ_Stage5_SBC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Sbc(); + } + } + void AbsIdx_READ_Stage5_ADC() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Adc(); + } + } + void AbsIdx_READ_Stage5_EOR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _Eor(); + } + } + void AbsIdx_READ_Stage5_AND() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + _And(); + } + } + void AbsIdx_READ_Stage5_ERROR() + { + rdy_freeze = !RDY; + if (RDY) + { + alu_temp = ReadMemory((ushort)ea); + S &= (byte)alu_temp; + X = S; + A = S; + P = (byte)((P & 0x7D) | TableNZ[S]); + } + + } + void AbsInd_JMP_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + ea = (opcode3 << 8) + opcode2; + alu_temp = ReadMemory((ushort)ea); + } + } + void AbsInd_JMP_Stage5() + { + rdy_freeze = !RDY; + if (RDY) + { + ea = (opcode3 << 8) + (byte)(opcode2 + 1); + alu_temp += ReadMemory((ushort)ea) << 8; + PC = (ushort)alu_temp; + } + + } + void Abs_RMW_Stage4() + { + rdy_freeze = !RDY; + if (RDY) + { + ea = (opcode3 << 8) + opcode2; + alu_temp = ReadMemory((ushort)ea); + } + + } + void Abs_RMW_Stage5_INC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)(alu_temp + 1); + alu_temp = value8; + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void Abs_RMW_Stage5_DEC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)(alu_temp - 1); + alu_temp = value8; + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void Abs_RMW_Stage5_DCP() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)(alu_temp - 1); + alu_temp = value8; + _Cmp(); + } + void Abs_RMW_Stage5_ISC() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)(alu_temp + 1); + alu_temp = value8; + _Sbc(); + } + void Abs_RMW_Stage5_ASL() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)(value8 << 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void Abs_RMW_Stage5_ROR() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void Abs_RMW_Stage5_SLO() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 0x80) != 0; + alu_temp = value8 = (byte)(value8 << 1); + A |= value8; + NZ_A(); + } + void Abs_RMW_Stage5_RLA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + A &= value8; + NZ_A(); + } + void Abs_RMW_Stage5_SRE() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + A ^= value8; + NZ_A(); + } + void Abs_RMW_Stage5_RRA() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 >> 1) | ((P & 1) << 7)); + FlagC = (temp8 & 1) != 0; + _Adc(); + } + void Abs_RMW_Stage5_ROL() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = temp8 = (byte)alu_temp; + alu_temp = value8 = (byte)((value8 << 1) | (P & 1)); + FlagC = (temp8 & 0x80) != 0; + P = (byte)((P & 0x7D) | TableNZ[value8]); + + } + void Abs_RMW_Stage5_LSR() + { + WriteMemory((ushort)ea, (byte)alu_temp); + value8 = (byte)alu_temp; + FlagC = (value8 & 1) != 0; + alu_temp = value8 = (byte)(value8 >> 1); + P = (byte)((P & 0x7D) | TableNZ[value8]); + + + } + void Abs_RMW_Stage6() + { + WriteMemory((ushort)ea, (byte)alu_temp); + + + } + void End_ISpecial() + { + opcode = VOP_Fetch1; + mi = 0; + ExecuteOneRetry(); + return; + + } + void End_SuppressInterrupt() + { + opcode = VOP_Fetch1_NoInterrupt; + mi = 0; + ExecuteOneRetry(); + return; + + } + void End() + { + opcode = VOP_Fetch1; + mi = 0; + iflag_pending = FlagI; + ExecuteOneRetry(); + return; + } + void End_BranchSpecial() + { + End(); + } + + void Jam() + { + rdy_freeze = true; + } + + void ExecuteOneRetry() + { + //dont know whether this system is any faster. hard to get benchmarks someone else try it? + //Uop uop = (Uop)CompiledMicrocode[MicrocodeIndex[opcode] + mi]; + Uop uop = Microcode[opcode][mi]; + switch (uop) + { + default: throw new InvalidOperationException(); + case Uop.Fetch1: Fetch1(); break; + case Uop.Fetch1_Real: Fetch1_Real(); break; + case Uop.Fetch2: Fetch2(); break; + case Uop.Fetch3: Fetch3(); break; + case Uop.FetchDummy: FetchDummy(); break; + case Uop.PushPCH: PushPCH(); break; + case Uop.PushPCL: PushPCL(); break; + case Uop.PushP_BRK: PushP_BRK(); break; + case Uop.PushP_IRQ: PushP_IRQ(); break; + case Uop.PushP_NMI: PushP_NMI(); break; + case Uop.PushP_Reset: PushP_Reset(); break; + case Uop.PushDummy: PushDummy(); break; + case Uop.FetchPCLVector: FetchPCLVector(); break; + case Uop.FetchPCHVector: FetchPCHVector(); break; + case Uop.Imp_INY: Imp_INY(); break; + case Uop.Imp_DEY: Imp_DEY(); break; + case Uop.Imp_INX: Imp_INX(); break; + case Uop.Imp_DEX: Imp_DEX(); break; + case Uop.NZ_A: NZ_A(); break; + case Uop.NZ_X: NZ_X(); break; + case Uop.NZ_Y: NZ_Y(); break; + case Uop.Imp_TSX: Imp_TSX(); break; + case Uop.Imp_TXS: Imp_TXS(); break; + case Uop.Imp_TAX: Imp_TAX(); break; + case Uop.Imp_TAY: Imp_TAY(); break; + case Uop.Imp_TYA: Imp_TYA(); break; + case Uop.Imp_TXA: Imp_TXA(); break; + case Uop.Imp_SEI: Imp_SEI(); break; + case Uop.Imp_CLI: Imp_CLI(); break; + case Uop.Imp_SEC: Imp_SEC(); break; + case Uop.Imp_CLC: Imp_CLC(); break; + case Uop.Imp_SED: Imp_SED(); break; + case Uop.Imp_CLD: Imp_CLD(); break; + case Uop.Imp_CLV: Imp_CLV(); break; + case Uop.Abs_WRITE_STA: Abs_WRITE_STA(); break; + case Uop.Abs_WRITE_STX: Abs_WRITE_STX(); break; + case Uop.Abs_WRITE_STY: Abs_WRITE_STY(); break; + case Uop.Abs_WRITE_SAX: Abs_WRITE_SAX(); break; + case Uop.ZP_WRITE_STA: ZP_WRITE_STA(); break; + case Uop.ZP_WRITE_STY: ZP_WRITE_STY(); break; + case Uop.ZP_WRITE_STX: ZP_WRITE_STX(); break; + case Uop.ZP_WRITE_SAX: ZP_WRITE_SAX(); break; + case Uop.IndIdx_Stage3: IndIdx_Stage3(); break; + case Uop.IndIdx_Stage4: IndIdx_Stage4(); break; + case Uop.IndIdx_WRITE_Stage5: IndIdx_WRITE_Stage5(); break; + case Uop.IndIdx_READ_Stage5: IndIdx_READ_Stage5(); break; + case Uop.IndIdx_RMW_Stage5: IndIdx_RMW_Stage5(); break; + case Uop.IndIdx_WRITE_Stage6_STA: IndIdx_WRITE_Stage6_STA(); break; + case Uop.IndIdx_WRITE_Stage6_SHA: IndIdx_WRITE_Stage6_SHA(); break; + case Uop.IndIdx_READ_Stage6_LDA: IndIdx_READ_Stage6_LDA(); break; + case Uop.IndIdx_READ_Stage6_CMP: IndIdx_READ_Stage6_CMP(); break; + case Uop.IndIdx_READ_Stage6_AND: IndIdx_READ_Stage6_AND(); break; + case Uop.IndIdx_READ_Stage6_EOR: IndIdx_READ_Stage6_EOR(); break; + case Uop.IndIdx_READ_Stage6_LAX: IndIdx_READ_Stage6_LAX(); break; + case Uop.IndIdx_READ_Stage6_ADC: IndIdx_READ_Stage6_ADC(); break; + case Uop.IndIdx_READ_Stage6_SBC: IndIdx_READ_Stage6_SBC(); break; + case Uop.IndIdx_READ_Stage6_ORA: IndIdx_READ_Stage6_ORA(); break; + case Uop.IndIdx_RMW_Stage6: IndIdx_RMW_Stage6(); break; + case Uop.IndIdx_RMW_Stage7_SLO: IndIdx_RMW_Stage7_SLO(); break; + case Uop.IndIdx_RMW_Stage7_SRE: IndIdx_RMW_Stage7_SRE(); break; + case Uop.IndIdx_RMW_Stage7_RRA: IndIdx_RMW_Stage7_RRA(); break; + case Uop.IndIdx_RMW_Stage7_ISC: IndIdx_RMW_Stage7_ISC(); break; + case Uop.IndIdx_RMW_Stage7_DCP: IndIdx_RMW_Stage7_DCP(); break; + case Uop.IndIdx_RMW_Stage7_RLA: IndIdx_RMW_Stage7_RLA(); break; + case Uop.IndIdx_RMW_Stage8: IndIdx_RMW_Stage8(); break; + case Uop.RelBranch_Stage2_BVS: RelBranch_Stage2_BVS(); break; + case Uop.RelBranch_Stage2_BVC: RelBranch_Stage2_BVC(); break; + case Uop.RelBranch_Stage2_BMI: RelBranch_Stage2_BMI(); break; + case Uop.RelBranch_Stage2_BPL: RelBranch_Stage2_BPL(); break; + case Uop.RelBranch_Stage2_BCS: RelBranch_Stage2_BCS(); break; + case Uop.RelBranch_Stage2_BCC: RelBranch_Stage2_BCC(); break; + case Uop.RelBranch_Stage2_BEQ: RelBranch_Stage2_BEQ(); break; + case Uop.RelBranch_Stage2_BNE: RelBranch_Stage2_BNE(); break; + case Uop.RelBranch_Stage2: RelBranch_Stage2(); break; + case Uop.RelBranch_Stage3: RelBranch_Stage3(); break; + case Uop.RelBranch_Stage4: RelBranch_Stage4(); break; + case Uop.NOP: NOP(); break; + case Uop.DecS: DecS(); break; + case Uop.IncS: IncS(); break; + case Uop.JSR: JSR(); break; + case Uop.PullP: PullP(); break; + case Uop.PullPCL: PullPCL(); break; + case Uop.PullPCH_NoInc: PullPCH_NoInc(); break; + case Uop.Abs_READ_LDA: Abs_READ_LDA(); break; + case Uop.Abs_READ_LDY: Abs_READ_LDY(); break; + case Uop.Abs_READ_LDX: Abs_READ_LDX(); break; + case Uop.Abs_READ_BIT: Abs_READ_BIT(); break; + case Uop.Abs_READ_LAX: Abs_READ_LAX(); break; + case Uop.Abs_READ_AND: Abs_READ_AND(); break; + case Uop.Abs_READ_EOR: Abs_READ_EOR(); break; + case Uop.Abs_READ_ORA: Abs_READ_ORA(); break; + case Uop.Abs_READ_ADC: Abs_READ_ADC(); break; + case Uop.Abs_READ_CMP: Abs_READ_CMP(); break; + case Uop.Abs_READ_CPY: Abs_READ_CPY(); break; + case Uop.Abs_READ_NOP: Abs_READ_NOP(); break; + case Uop.Abs_READ_CPX: Abs_READ_CPX(); break; + case Uop.Abs_READ_SBC: Abs_READ_SBC(); break; + case Uop.ZpIdx_Stage3_X: ZpIdx_Stage3_X(); break; + case Uop.ZpIdx_Stage3_Y: ZpIdx_Stage3_Y(); break; + case Uop.ZpIdx_RMW_Stage4: ZpIdx_RMW_Stage4(); break; + case Uop.ZpIdx_RMW_Stage6: ZpIdx_RMW_Stage6(); break; + case Uop.ZP_READ_EOR: ZP_READ_EOR(); break; + case Uop.ZP_READ_BIT: ZP_READ_BIT(); break; + case Uop.ZP_READ_LDA: ZP_READ_LDA(); break; + case Uop.ZP_READ_LDY: ZP_READ_LDY(); break; + case Uop.ZP_READ_LDX: ZP_READ_LDX(); break; + case Uop.ZP_READ_LAX: ZP_READ_LAX(); break; + case Uop.ZP_READ_CPY: ZP_READ_CPY(); break; + case Uop.ZP_READ_CMP: ZP_READ_CMP(); break; + case Uop.ZP_READ_CPX: ZP_READ_CPX(); break; + case Uop.ZP_READ_ORA: ZP_READ_ORA(); break; + case Uop.ZP_READ_NOP: ZP_READ_NOP(); break; + case Uop.ZP_READ_SBC: ZP_READ_SBC(); break; + case Uop.ZP_READ_ADC: ZP_READ_ADC(); break; + case Uop.ZP_READ_AND: ZP_READ_AND(); break; + case Uop._Cpx: _Cpx(); break; + case Uop._Cpy: _Cpy(); break; + case Uop._Cmp: _Cmp(); break; + case Uop._Eor: _Eor(); break; + case Uop._And: _And(); break; + case Uop._Ora: _Ora(); break; + case Uop._Anc: _Anc(); break; + case Uop._Asr: _Asr(); break; + case Uop._Axs: _Axs(); break; + case Uop._Arr: _Arr(); break; + case Uop._Lxa: _Lxa(); break; + case Uop._Sbc: _Sbc(); break; + case Uop._Adc: _Adc(); break; + case Uop.Unsupported: Unsupported(); break; + case Uop.Imm_EOR: Imm_EOR(); break; + case Uop.Imm_ANC: Imm_ANC(); break; + case Uop.Imm_ASR: Imm_ASR(); break; + case Uop.Imm_AXS: Imm_AXS(); break; + case Uop.Imm_ARR: Imm_ARR(); break; + case Uop.Imm_LXA: Imm_LXA(); break; + case Uop.Imm_ORA: Imm_ORA(); break; + case Uop.Imm_CPY: Imm_CPY(); break; + case Uop.Imm_CPX: Imm_CPX(); break; + case Uop.Imm_CMP: Imm_CMP(); break; + case Uop.Imm_SBC: Imm_SBC(); break; + case Uop.Imm_AND: Imm_AND(); break; + case Uop.Imm_ADC: Imm_ADC(); break; + case Uop.Imm_LDA: Imm_LDA(); break; + case Uop.Imm_LDX: Imm_LDX(); break; + case Uop.Imm_LDY: Imm_LDY(); break; + case Uop.Imm_Unsupported: Imm_Unsupported(); break; + case Uop.IdxInd_Stage3: IdxInd_Stage3(); break; + case Uop.IdxInd_Stage4: IdxInd_Stage4(); break; + case Uop.IdxInd_Stage5: IdxInd_Stage5(); break; + case Uop.IdxInd_Stage6_READ_LDA: IdxInd_Stage6_READ_LDA(); break; + case Uop.IdxInd_Stage6_READ_ORA: IdxInd_Stage6_READ_ORA(); break; + case Uop.IdxInd_Stage6_READ_LAX: IdxInd_Stage6_READ_LAX(); break; + case Uop.IdxInd_Stage6_READ_CMP: IdxInd_Stage6_READ_CMP(); break; + case Uop.IdxInd_Stage6_READ_ADC: IdxInd_Stage6_READ_ADC(); break; + case Uop.IdxInd_Stage6_READ_AND: IdxInd_Stage6_READ_AND(); break; + case Uop.IdxInd_Stage6_READ_EOR: IdxInd_Stage6_READ_EOR(); break; + case Uop.IdxInd_Stage6_READ_SBC: IdxInd_Stage6_READ_SBC(); break; + case Uop.IdxInd_Stage6_WRITE_STA: IdxInd_Stage6_WRITE_STA(); break; + case Uop.IdxInd_Stage6_WRITE_SAX: IdxInd_Stage6_WRITE_SAX(); break; + case Uop.IdxInd_Stage6_RMW: IdxInd_Stage6_RMW(); break; + case Uop.IdxInd_Stage7_RMW_SLO: IdxInd_Stage7_RMW_SLO(); break; + case Uop.IdxInd_Stage7_RMW_ISC: IdxInd_Stage7_RMW_ISC(); break; + case Uop.IdxInd_Stage7_RMW_DCP: IdxInd_Stage7_RMW_DCP(); break; + case Uop.IdxInd_Stage7_RMW_SRE: IdxInd_Stage7_RMW_SRE(); break; + case Uop.IdxInd_Stage7_RMW_RRA: IdxInd_Stage7_RMW_RRA(); break; + case Uop.IdxInd_Stage7_RMW_RLA: IdxInd_Stage7_RMW_RLA(); break; + case Uop.IdxInd_Stage8_RMW: IdxInd_Stage8_RMW(); break; + case Uop.PushP: PushP(); break; + case Uop.PushA: PushA(); break; + case Uop.PullA_NoInc: PullA_NoInc(); break; + case Uop.PullP_NoInc: PullP_NoInc(); break; + case Uop.Imp_ASL_A: Imp_ASL_A(); break; + case Uop.Imp_ROL_A: Imp_ROL_A(); break; + case Uop.Imp_ROR_A: Imp_ROR_A(); break; + case Uop.Imp_LSR_A: Imp_LSR_A(); break; + case Uop.JMP_abs: JMP_abs(); break; + case Uop.IncPC: IncPC(); break; + case Uop.ZP_RMW_Stage3: ZP_RMW_Stage3(); break; + case Uop.ZP_RMW_Stage5: ZP_RMW_Stage5(); break; + case Uop.ZP_RMW_INC: ZP_RMW_INC(); break; + case Uop.ZP_RMW_DEC: ZP_RMW_DEC(); break; + case Uop.ZP_RMW_ASL: ZP_RMW_ASL(); break; + case Uop.ZP_RMW_SRE: ZP_RMW_SRE(); break; + case Uop.ZP_RMW_RRA: ZP_RMW_RRA(); break; + case Uop.ZP_RMW_DCP: ZP_RMW_DCP(); break; + case Uop.ZP_RMW_LSR: ZP_RMW_LSR(); break; + case Uop.ZP_RMW_ROR: ZP_RMW_ROR(); break; + case Uop.ZP_RMW_ROL: ZP_RMW_ROL(); break; + case Uop.ZP_RMW_SLO: ZP_RMW_SLO(); break; + case Uop.ZP_RMW_ISC: ZP_RMW_ISC(); break; + case Uop.ZP_RMW_RLA: ZP_RMW_RLA(); break; + case Uop.AbsIdx_Stage3_Y: AbsIdx_Stage3_Y(); break; + case Uop.AbsIdx_Stage3_X: AbsIdx_Stage3_X(); break; + case Uop.AbsIdx_READ_Stage4: AbsIdx_READ_Stage4(); break; + case Uop.AbsIdx_Stage4: AbsIdx_Stage4(); break; + case Uop.AbsIdx_WRITE_Stage5_STA: AbsIdx_WRITE_Stage5_STA(); break; + case Uop.AbsIdx_WRITE_Stage5_SHY: AbsIdx_WRITE_Stage5_SHY(); break; + case Uop.AbsIdx_WRITE_Stage5_SHX: AbsIdx_WRITE_Stage5_SHX(); break; + case Uop.AbsIdx_WRITE_Stage5_ERROR: AbsIdx_WRITE_Stage5_ERROR(); break; + case Uop.AbsIdx_RMW_Stage5: AbsIdx_RMW_Stage5(); break; + case Uop.AbsIdx_RMW_Stage7: AbsIdx_RMW_Stage7(); break; + case Uop.AbsIdx_RMW_Stage6_DEC: AbsIdx_RMW_Stage6_DEC(); break; + case Uop.AbsIdx_RMW_Stage6_DCP: AbsIdx_RMW_Stage6_DCP(); break; + case Uop.AbsIdx_RMW_Stage6_ISC: AbsIdx_RMW_Stage6_ISC(); break; + case Uop.AbsIdx_RMW_Stage6_INC: AbsIdx_RMW_Stage6_INC(); break; + case Uop.AbsIdx_RMW_Stage6_ROL: AbsIdx_RMW_Stage6_ROL(); break; + case Uop.AbsIdx_RMW_Stage6_LSR: AbsIdx_RMW_Stage6_LSR(); break; + case Uop.AbsIdx_RMW_Stage6_SLO: AbsIdx_RMW_Stage6_SLO(); break; + case Uop.AbsIdx_RMW_Stage6_SRE: AbsIdx_RMW_Stage6_SRE(); break; + case Uop.AbsIdx_RMW_Stage6_RRA: AbsIdx_RMW_Stage6_RRA(); break; + case Uop.AbsIdx_RMW_Stage6_RLA: AbsIdx_RMW_Stage6_RLA(); break; + case Uop.AbsIdx_RMW_Stage6_ASL: AbsIdx_RMW_Stage6_ASL(); break; + case Uop.AbsIdx_RMW_Stage6_ROR: AbsIdx_RMW_Stage6_ROR(); break; + case Uop.AbsIdx_READ_Stage5_LDA: AbsIdx_READ_Stage5_LDA(); break; + case Uop.AbsIdx_READ_Stage5_LDX: AbsIdx_READ_Stage5_LDX(); break; + case Uop.AbsIdx_READ_Stage5_LAX: AbsIdx_READ_Stage5_LAX(); break; + case Uop.AbsIdx_READ_Stage5_LDY: AbsIdx_READ_Stage5_LDY(); break; + case Uop.AbsIdx_READ_Stage5_ORA: AbsIdx_READ_Stage5_ORA(); break; + case Uop.AbsIdx_READ_Stage5_NOP: AbsIdx_READ_Stage5_NOP(); break; + case Uop.AbsIdx_READ_Stage5_CMP: AbsIdx_READ_Stage5_CMP(); break; + case Uop.AbsIdx_READ_Stage5_SBC: AbsIdx_READ_Stage5_SBC(); break; + case Uop.AbsIdx_READ_Stage5_ADC: AbsIdx_READ_Stage5_ADC(); break; + case Uop.AbsIdx_READ_Stage5_EOR: AbsIdx_READ_Stage5_EOR(); break; + case Uop.AbsIdx_READ_Stage5_AND: AbsIdx_READ_Stage5_AND(); break; + case Uop.AbsIdx_READ_Stage5_ERROR: AbsIdx_READ_Stage5_ERROR(); break; + case Uop.AbsInd_JMP_Stage4: AbsInd_JMP_Stage4(); break; + case Uop.AbsInd_JMP_Stage5: AbsInd_JMP_Stage5(); break; + case Uop.Abs_RMW_Stage4: Abs_RMW_Stage4(); break; + case Uop.Abs_RMW_Stage5_INC: Abs_RMW_Stage5_INC(); break; + case Uop.Abs_RMW_Stage5_DEC: Abs_RMW_Stage5_DEC(); break; + case Uop.Abs_RMW_Stage5_DCP: Abs_RMW_Stage5_DCP(); break; + case Uop.Abs_RMW_Stage5_ISC: Abs_RMW_Stage5_ISC(); break; + case Uop.Abs_RMW_Stage5_ASL: Abs_RMW_Stage5_ASL(); break; + case Uop.Abs_RMW_Stage5_ROR: Abs_RMW_Stage5_ROR(); break; + case Uop.Abs_RMW_Stage5_SLO: Abs_RMW_Stage5_SLO(); break; + case Uop.Abs_RMW_Stage5_RLA: Abs_RMW_Stage5_RLA(); break; + case Uop.Abs_RMW_Stage5_SRE: Abs_RMW_Stage5_SRE(); break; + case Uop.Abs_RMW_Stage5_RRA: Abs_RMW_Stage5_RRA(); break; + case Uop.Abs_RMW_Stage5_ROL: Abs_RMW_Stage5_ROL(); break; + case Uop.Abs_RMW_Stage5_LSR: Abs_RMW_Stage5_LSR(); break; + case Uop.Abs_RMW_Stage6: Abs_RMW_Stage6(); break; + case Uop.End_ISpecial: End_ISpecial(); break; + case Uop.End_SuppressInterrupt: End_SuppressInterrupt(); break; + case Uop.End: End(); break; + case Uop.End_BranchSpecial: End_BranchSpecial(); break; + case Uop.Jam: Jam(); break; + } + } + + public void ExecuteOne() + { + // total cycles now incraments every time a cycle is called to accurately count during RDY + TotalExecutedCycles++; + if (!rdy_freeze) + { + + + interrupt_pending |= Interrupted; + } + rdy_freeze = false; + + //i tried making ExecuteOneRetry not re-entrant by having it set a flag instead, then exit from the call below, check the flag, and GOTO if it was flagged, but it wasnt faster + ExecuteOneRetry(); + + if (!rdy_freeze) + mi++; + } //ExecuteOne + + public bool AtInstructionStart() + { + return Microcode[opcode][mi] >= Uop.End; + } + } +}