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initial version- still needs to be cleaned up

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This commit is contained in:
mpohoreski 2010-06-10 13:59:31 +00:00
parent 3f85d66786
commit 757ec80cfd
1 changed files with 362 additions and 0 deletions
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362
AppleWin/source/CPU/cpu65d02.cpp Normal file
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@ -0,0 +1,362 @@
// return (x < 255) ? (x+1) : 255;
inline IncCalmp8( u8 x )
{
u16 c = (~((x + 1) >> 8) & 1);
u8 r = x + c;
return r;
}
// return (x > 0) ? (x-1) : 0;
inline DecCalmp8( u8 x )
{
u16 c = (~((x - 1) >> 8) & 1);
u8 r = x - c;
return r;
}
// 0 A n/a
// 1 B Exec
// 2 G Read
// 3 R Write
#undef READ
#define READ \
(u8*) gpRead = ((u8*)gaMemoryAccess) + (addr * 4) + 3; \
*gpRead = IncClamp8( *gpRead )
( \
((addr & 0xF000) == 0xC000) \
? IORead[(addr>>4) & 0xFF](regs.pc,addr,0,0,uExecutedCycles) \
: *(mem+addr) \
)
#undef WRITE
#define WRITE(a) \
(u8*) gpRead = ((u8*)gaMemoryAccess) + (addr * 4) + 0; \
{ \
memdirty[addr >> 8] = 0xFF; \
LPBYTE page = memwrite[addr >> 8]; \
if (page) \
*(page+(addr & 0xFF)) = (BYTE)(a); \
else if ((addr & 0xF000) == 0xC000) \
IOWrite[(addr>>4) & 0xFF](regs.pc,addr,1,(BYTE)(a),uExecutedCycles); \
}
// RGBA r= write, g = read, b = pc
int g_aMemoryAccess[ 65536 ];
u8 *g_pRead = 0;
u8 *g_pWrite = 0;
u8 *g_pExeec = 0;
//===========================================================================
// Michael's Real-Time Debugger/Visualizer CPU
static DWORD Cpu65D02 (DWORD uTotalCycles)
{
WORD addr;
BOOL flagc; // must always be 0 or 1, no other values allowed
BOOL flagn; // must always be 0 or 0x80.
BOOL flagv; // any value allowed
BOOL flagz; // any value allowed
WORD temp;
WORD temp2;
WORD val;
AF_TO_EF
ULONG uExecutedCycles = 0;
BOOL bSlowerOnPagecross = 0; // Set if opcode writes to memory (eg. ASL, STA)
WORD base;
bool bBreakOnInvalid = false;
do
{
UINT uExtraCycles = 0;
BYTE iOpcode;
if (!Fetch(iOpcode, uExecutedCycles))
break;
switch (iOpcode)
{
//#define ` INV
//#define @ Read(
//#define $ Store()
#define abx ABSX
#define aby ABSY
#define idx INDX
#define idy INDY
#define izp IZPG
#define rla ROLA // rotate left
#define sla ASLA // shift left
#define zpx ZPGX
//! ! ! ! !
case 0x00: BRK CYC(7) break;
case 0x01: idx ORA CYC(6) break;
case 0x02: INV IMM NOP CYC(2) break;
case 0x03: INV NOP CYC(2) break;
case 0x04: ZPG TSB CYC(5) break;
case 0x05: ZPG ORA CYC(3) break;
case 0x06: ZPG ASL_CMOS CYC(5) break;
case 0x07: INV NOP CYC(2) break;
case 0x08: PHP CYC(3) break;
case 0x09: IMM ORA CYC(2) break;
case 0x0A: sla CYC(2) break;
case 0x0B: INV NOP CYC(2) break;
case 0x0C: ABS TSB CYC(6) break;
case 0x0D: ABS ORA CYC(4) break;
case 0x0E: ABS ASL_CMOS CYC(6) break;
case 0x0F: INV NOP CYC(2) break;
case 0x10: REL BPL CYC(2) break;
case 0x11: idy ORA CYC(5) break;
case 0x12: izp ORA CYC(5) break;
case 0x13: INV NOP CYC(2) break;
case 0x14: ZPG TRB CYC(5) break;
case 0x15: zpx ORA CYC(4) break;
case 0x16: zpx ASL_CMOS CYC(6) break;
case 0x17: INV NOP CYC(2) break;
case 0x18: CLC CYC(2) break;
case 0x19: aby ORA CYC(4) break;
case 0x1A: INA CYC(2) break;
case 0x1B: INV NOP CYC(2) break;
case 0x1C: ABS TRB CYC(6) break;
case 0x1D: abx ORA CYC(4) break;
case 0x1E: abx ASL_CMOS CYC(6) break;
case 0x1F: INV NOP CYC(2) break;
case 0x20: ABS JSR CYC(6) break;
case 0x21: INDX AND CYC(6) break;
case 0x22: INV IMM NOP CYC(2) break;
case 0x23: INV NOP CYC(2) break;
case 0x24: ZPG BIT CYC(3) break;
case 0x25: ZPG AND CYC(3) break;
case 0x26: ZPG ROL_CMOS CYC(5) break;
case 0x27: INV NOP CYC(2) break;
case 0x28: PLP CYC(4) break;
case 0x29: IMM AND CYC(2) break;
case 0x2A: rlaA CYC(2) break;
case 0x2B: INV NOP CYC(2) break;
case 0x2C: ABS BIT CYC(4) break;
case 0x2D: ABS AND CYC(2) break;
case 0x2E: ABS ROL_CMOS CYC(6) break;
case 0x2F: INV NOP CYC(2) break;
case 0x30: REL BMI CYC(2) break;
case 0x31: idy AND CYC(5) break;
case 0x32: izp AND CYC(5) break;
case 0x33: INV NOP CYC(2) break;
case 0x34: zpx BIT CYC(4) break;
case 0x35: zpx AND CYC(4) break;
case 0x36: zpx ROL_CMOS CYC(6) break;
case 0x37: INV NOP CYC(2) break;
case 0x38: SEC CYC(2) break;
case 0x39: aby AND CYC(4) break;
case 0x3A: DEA CYC(2) break;
case 0x3B: INV NOP CYC(2) break;
case 0x3C: abx BIT CYC(4) break;
case 0x3D: abx AND CYC(4) break;
case 0x3E: abx ROL_CMOS CYC(6) break;
case 0x3F: INV NOP CYC(2) break;
case 0x40: RTI CYC(6) DoIrqProfiling(uExecutedCycles); break;
case 0x41: idx EOR CYC(6) break;
case 0x42: INV IMM NOP CYC(2) break;
case 0x43: INV NOP CYC(2) break;
case 0x44: INV ZPG NOP CYC(3) break;
case 0x45: ZPG EOR CYC(3) break;
case 0x46: ZPG LSR_CMOS CYC(5) break;
case 0x47: INV NOP CYC(2) break;
case 0x48: PHA CYC(3) break;
case 0x49: IMM EOR CYC(2) break;
case 0x4A: LSRA CYC(2) break;
case 0x4B: INV NOP CYC(2) break;
case 0x4C: ABS JMP CYC(3) break;
case 0x4D: ABS EOR CYC(4) break;
case 0x4E: ABS LSR_CMOS CYC(6) break;
case 0x4F: INV NOP CYC(2) break;
case 0x50: REL BVC CYC(2) break;
case 0x51: idy EOR CYC(5) break;
case 0x52: IZPG EOR CYC(5) break;
case 0x53: INV NOP CYC(2) break;
case 0x54: INV ZPGX NOP CYC(4) break;
case 0x55: ZPGX EOR CYC(4) break;
case 0x56: ZPGX LSR_CMOS CYC(6) break;
case 0x57: INV NOP CYC(2) break;
case 0x58: CLI CYC(2) break;
case 0x59: ABSY EOR CYC(4) break;
case 0x5A: PHY CYC(3) break;
case 0x5B: INV NOP CYC(2) break;
case 0x5C: INV ABSX NOP CYC(8) break;
case 0x5D: ABSX EOR CYC(4) break;
case 0x5E: ABSX LSR_CMOS CYC(6) break;
case 0x5F: INV NOP CYC(2) break;
case 0x60: RTS CYC(6) break;
case 0x61: INDX ADC_CMOS CYC(6) break;
case 0x62: INV IMM NOP CYC(2) break;
case 0x63: INV NOP CYC(2) break;
case 0x64: ZPG STZ CYC(3) break;
case 0x65: ZPG ADC_CMOS CYC(3) break;
case 0x66: ZPG ROR_CMOS CYC(5) break;
case 0x67: INV NOP CYC(2) break;
case 0x68: PLA CYC(4) break;
case 0x69: IMM ADC_CMOS CYC(2) break;
case 0x6A: RORA CYC(2) break;
case 0x6B: INV NOP CYC(2) break;
case 0x6C: IABSCMOS JMP CYC(6) break;
case 0x6D: ABS ADC_CMOS CYC(4) break;
case 0x6E: ABS ROR_CMOS CYC(6) break;
case 0x6F: INV NOP CYC(2) break;
case 0x70: REL BVS CYC(2) break;
case 0x71: INDY ADC_CMOS CYC(5) break;
case 0x72: IZPG ADC_CMOS CYC(5) break;
case 0x73: INV NOP CYC(2) break;
case 0x74: ZPGX STZ CYC(4) break;
case 0x75: ZPGX ADC_CMOS CYC(4) break;
case 0x76: ZPGX ROR_CMOS CYC(6) break;
case 0x77: INV NOP CYC(2) break;
case 0x78: SEI CYC(2) break;
case 0x79: ABSY ADC_CMOS CYC(4) break;
case 0x7A: PLY CYC(4) break;
case 0x7B: INV NOP CYC(2) break;
case 0x7C: IABSX JMP CYC(6) break;
case 0x7D: ABSX ADC_CMOS CYC(4) break;
case 0x7E: ABSX ROR_CMOS CYC(6) break;
case 0x7F: INV NOP CYC(2) break;
case 0x80: REL BRA CYC(2) break;
case 0x81: INDX STA CYC(6) break;
case 0x82: INV IMM NOP CYC(2) break;
case 0x83: INV NOP CYC(2) break;
case 0x84: ZPG STY CYC(3) break;
case 0x85: ZPG STA CYC(3) break;
case 0x86: ZPG STX CYC(3) break;
case 0x87: INV NOP CYC(2) break;
case 0x88: DEY CYC(2) break;
case 0x89: IMM BITI CYC(2) break;
case 0x8A: TXA CYC(2) break;
case 0x8B: INV NOP CYC(2) break;
case 0x8C: ABS STY CYC(4) break;
case 0x8D: ABS STA CYC(4) break;
case 0x8E: ABS STX CYC(4) break;
case 0x8F: INV NOP CYC(2) break;
case 0x90: REL BCC CYC(2) break;
case 0x91: INDY STA CYC(6) break;
case 0x92: IZPG STA CYC(5) break;
case 0x93: INV NOP CYC(2) break;
case 0x94: ZPGX STY CYC(4) break;
case 0x95: ZPGX STA CYC(4) break;
case 0x96: ZPGY STX CYC(4) break;
case 0x97: INV NOP CYC(2) break;
case 0x98: TYA CYC(2) break;
case 0x99: ABSY STA CYC(5) break;
case 0x9A: TXS CYC(2) break;
case 0x9B: INV NOP CYC(2) break;
case 0x9C: ABS STZ CYC(4) break;
case 0x9D: ABSX STA CYC(5) break;
case 0x9E: ABSX STZ CYC(5) break;
case 0x9F: INV NOP CYC(2) break;
case 0xA0: IMM LDY CYC(2) break;
case 0xA1: INDX LDA CYC(6) break;
case 0xA2: IMM LDX CYC(2) break;
case 0xA3: INV NOP CYC(2) break;
case 0xA4: ZPG LDY CYC(3) break;
case 0xA5: ZPG LDA CYC(3) break;
case 0xA6: ZPG LDX CYC(3) break;
case 0xA7: INV NOP CYC(2) break;
case 0xA8: TAY CYC(2) break;
case 0xA9: IMM LDA CYC(2) break;
case 0xAA: TAX CYC(2) break;
case 0xAB: INV NOP CYC(2) break;
case 0xAC: ABS LDY CYC(4) break;
case 0xAD: ABS LDA CYC(4) break;
case 0xAE: ABS LDX CYC(4) break;
case 0xAF: INV NOP CYC(2) break;
case 0xB0: REL BCS CYC(2) break;
case 0xB1: INDY LDA CYC(5) break;
case 0xB2: IZPG LDA CYC(5) break;
case 0xB3: INV NOP CYC(2) break;
case 0xB4: ZPGX LDY CYC(4) break;
case 0xB5: ZPGX LDA CYC(4) break;
case 0xB6: ZPGY LDX CYC(4) break;
case 0xB7: INV NOP CYC(2) break;
case 0xB8: CLV CYC(2) break;
case 0xB9: ABSY LDA CYC(4) break;
case 0xBA: TSX CYC(2) break;
case 0xBB: INV NOP CYC(2) break;
case 0xBC: ABSX LDY CYC(4) break;
case 0xBD: ABSX LDA CYC(4) break;
case 0xBE: ABSY LDX CYC(4) break;
case 0xBF: INV NOP CYC(2) break;
case 0xC0: IMM CPY CYC(2) break;
case 0xC1: INDX CMP CYC(6) break;
case 0xC2: INV IMM NOP CYC(2) break;
case 0xC3: INV NOP CYC(2) break;
case 0xC4: ZPG CPY CYC(3) break;
case 0xC5: ZPG CMP CYC(3) break;
case 0xC6: ZPG DEC_CMOS CYC(5) break;
case 0xC7: INV NOP CYC(2) break;
case 0xC8: INY CYC(2) break;
case 0xC9: IMM CMP CYC(2) break;
case 0xCA: DEX CYC(2) break;
case 0xCB: INV NOP CYC(2) break;
case 0xCC: ABS CPY CYC(4) break;
case 0xCD: ABS CMP CYC(4) break;
case 0xCE: ABS DEC_CMOS CYC(5) break;
case 0xCF: INV NOP CYC(2) break;
case 0xD0: REL BNE CYC(2) break;
case 0xD1: INDY CMP CYC(5) break;
case 0xD2: IZPG CMP CYC(5) break;
case 0xD3: INV NOP CYC(2) break;
case 0xD4: INV ZPGX NOP CYC(4) break;
case 0xD5: ZPGX CMP CYC(4) break;
case 0xD6: ZPGX DEC_CMOS CYC(6) break;
case 0xD7: INV NOP CYC(2) break;
case 0xD8: CLD CYC(2) break;
case 0xD9: ABSY CMP CYC(4) break;
case 0xDA: PHX CYC(3) break;
case 0xDB: INV NOP CYC(2) break;
case 0xDC: INV ABSX NOP CYC(4) break;
case 0xDD: ABSX CMP CYC(4) break;
case 0xDE: ABSX DEC_CMOS CYC(6) break;
case 0xDF: INV NOP CYC(2) break;
case 0xE0: IMM CPX CYC(2) break;
case 0xE1: INDX SBC_CMOS CYC(6) break;
case 0xE2: INV IMM NOP CYC(2) break;
case 0xE3: INV NOP CYC(2) break;
case 0xE4: ZPG CPX CYC(3) break;
case 0xE5: ZPG SBC_CMOS CYC(3) break;
case 0xE6: ZPG INC_CMOS CYC(5) break;
case 0xE7: INV NOP CYC(2) break;
case 0xE8: INX CYC(2) break;
case 0xE9: IMM SBC_CMOS CYC(2) break;
case 0xEA: NOP CYC(2) break;
case 0xEB: INV NOP CYC(2) break;
case 0xEC: ABS CPX CYC(4) break;
case 0xED: ABS SBC_CMOS CYC(4) break;
case 0xEE: ABS INC_CMOS CYC(6) break;
case 0xEF: INV NOP CYC(2) break;
case 0xF0: REL BEQ CYC(2) break;
case 0xF1: INDY SBC_CMOS CYC(5) break;
case 0xF2: IZPG SBC_CMOS CYC(5) break;
case 0xF3: INV NOP CYC(2) break;
case 0xF4: INV ZPGX NOP CYC(4) break;
case 0xF5: ZPGX SBC_CMOS CYC(4) break;
case 0xF6: ZPGX INC_CMOS CYC(6) break;
case 0xF7: INV NOP CYC(2) break;
case 0xF8: SED CYC(2) break;
case 0xF9: ABSY SBC_CMOS CYC(4) break;
case 0xFA: PLX CYC(4) break;
case 0xFB: INV NOP CYC(2) break;
case 0xFC: INV ABSX NOP CYC(4) break;
case 0xFD: ABSX SBC_CMOS CYC(4) break;
case 0xFE: ABSX INC_CMOS CYC(6) break;
case 0xFF: INV NOP CYC(2) break;
}
CheckInterruptSources(uExecutedCycles);
NMI(uExecutedCycles, uExtraCycles, flagc, flagn, flagv, flagz);
IRQ(uExecutedCycles, uExtraCycles, flagc, flagn, flagv, flagz);
if (bBreakOnInvalid)
break;
} while (uExecutedCycles < uTotalCycles);
EF_TO_AF
return uExecutedCycles;
}