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316dc7c0a6
BUG#017055 - DDial timer running very fast . TAPEIN.bit7 was being read from floating-bus. Now fixed high. BUG#007237 - VBl IO reg not updated in 'Stepping' mode
34 lines
958 B
C
34 lines
958 B
C
#pragma once
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typedef struct _regsrec {
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BYTE a; // accumulator
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BYTE x; // index X
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BYTE y; // index Y
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BYTE ps; // processor status
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WORD pc; // program counter
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WORD sp; // stack pointer
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BYTE bJammed; // CPU has crashed (NMOS 6502 only)
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} regsrec, *regsptr;
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extern regsrec regs;
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extern unsigned __int64 g_nCumulativeCycles;
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void CpuDestroy ();
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void CpuCalcCycles(ULONG nExecutedCycles);
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DWORD CpuExecute (DWORD);
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ULONG CpuGetCyclesThisVideoFrame(ULONG nExecutedCycles);
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void CpuInitialize ();
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void CpuSetupBenchmark ();
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void CpuIrqReset();
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void CpuIrqAssert(eIRQSRC Device);
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void CpuIrqDeassert(eIRQSRC Device);
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void CpuNmiReset();
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void CpuNmiAssert(eIRQSRC Device);
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void CpuNmiDeassert(eIRQSRC Device);
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void CpuReset ();
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DWORD CpuGetSnapshot(SS_CPU6502* pSS);
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DWORD CpuSetSnapshot(SS_CPU6502* pSS);
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BYTE CpuRead(USHORT addr, ULONG uExecutedCycles);
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void CpuWrite(USHORT addr, BYTE a, ULONG uExecutedCycles);
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