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LC: fixed INC to only write-enable LC for 65C02 (#700)

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This commit is contained in:
tomcw 2019-10-12 18:17:11 +01:00
parent df4ed7b964
commit 8a55e35e2d
1 changed files with 5 additions and 3 deletions
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8
source/LanguageCard.cpp
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@ -106,6 +106,9 @@ BYTE __stdcall LanguageCardUnit::IO(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValu
// GH#700: INC $C083/C08B (RMW) to write enable the LC // GH#700: INC $C083/C08B (RMW) to write enable the LC
bool LanguageCardUnit::IsOpcodeRMWabs(WORD addr) bool LanguageCardUnit::IsOpcodeRMWabs(WORD addr)
{ {
if (GetMainCpu() != CPU_65C02)
return false;
BYTE param1 = mem[(regs.pc - 2) & 0xffff]; BYTE param1 = mem[(regs.pc - 2) & 0xffff];
BYTE param2 = mem[(regs.pc - 1) & 0xffff]; BYTE param2 = mem[(regs.pc - 1) & 0xffff];
if (param1 != (addr & 0xff) || param2 != 0xC0) if (param1 != (addr & 0xff) || param2 != 0xC0)
@ -120,9 +123,8 @@ bool LanguageCardUnit::IsOpcodeRMWabs(WORD addr)
opcode == 0x0E) // ASL abs opcode == 0x0E) // ASL abs
return true; return true;
if ((GetMainCpu() == CPU_65C02) && ( if (opcode == 0x1C || // TRB abs
opcode == 0x1C || // TRB abs opcode == 0x0C) // TSB abs
opcode == 0x0C)) // TSB abs
return true; return true;
return false; return false;