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Add 6522 support for stz abs16 and stz abs16,x
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@ -383,6 +383,18 @@ static UINT GetOpcodeCycles(BYTE reg)
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opcodeCycles = 5;
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opcodeCycles = 5;
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opcode = opcodeMinus2;
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opcode = opcodeMinus2;
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}
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}
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else if (opcodeMinus3 == 0x9C && GetMainCpu() == CPU_65C02) // stz abs16 : 65C02-only
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{
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opcodeCycles = 4;
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opcode = opcodeMinus3;
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abs16 = true;
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}
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else if (opcodeMinus3 == 0x9E && GetMainCpu() == CPU_65C02) // stz abs16,x : 65C02-only
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{
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opcodeCycles = 5;
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opcode = opcodeMinus3;
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abs16 = true;
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}
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else
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else
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{
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{
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_ASSERT(0);
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_ASSERT(0);
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@ -405,7 +417,7 @@ static UINT GetOpcodeCycles(BYTE reg)
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{
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{
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addr16 = mem[(regs.pc-2)&0xffff] | (mem[(regs.pc-1)&0xffff]<<8);
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addr16 = mem[(regs.pc-2)&0xffff] | (mem[(regs.pc-1)&0xffff]<<8);
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if (opcode == 0x99) addr16 += regs.y;
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if (opcode == 0x99) addr16 += regs.y;
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if (opcode == 0x9D) addr16 += regs.x;
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if (opcode == 0x9D || opcode == 0x9E) addr16 += regs.x;
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}
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}
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// Check we've reverse looked-up the 6502 opcode correctly
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// Check we've reverse looked-up the 6502 opcode correctly
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