54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
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#ifndef MOS6502X_H
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#define MOS6502X_H
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#include "ints.h"
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class MOS6502X
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{
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public:
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bool BCD_Enabled;
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bool debug;
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bool throw_unhandled;
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byte A;
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byte X;
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byte Y;
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byte P;
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ushort PC;
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byte S;
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bool IRQ;
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bool NMI;
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int TotalExecutedCycles;
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byte (__cdecl *ReadMemory)(ushort);
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byte (__cdecl *DummyReadMemory)(ushort);
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void (__cdecl *WriteMemory)(ushort, byte);
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//opcode bytes.. theoretically redundant with the temp variables? who knows.
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int opcode;
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byte opcode2, opcode3;
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int ea, alu_temp; //cpu internal temp variables
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int mi; //microcode index
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bool iflag_pending; //iflag must be stored after it is checked in some cases (CLI and SEI).
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//tracks whether an interrupt condition has popped up recently.
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//not sure if this is real or not but it helps with the branch_irq_hack
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bool interrupt_pending;
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bool branch_irq_hack; //see Uop.RelBranch_Stage3 for more details
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__declspec(dllexport) void ExecuteOne();
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void FetchDummy();
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__declspec(dllexport) void Reset();
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__declspec(dllexport) void NESSoftReset();
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__declspec(dllexport) void SetTrampolines(byte (__cdecl *ReadMemory)(ushort), byte (__cdecl *DummyReadMemory)(ushort), void (__cdecl *WriteMemory)(ushort, byte));
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};
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extern "C" __declspec(dllexport) void* __cdecl Create();
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extern "C" __declspec(dllexport) void __cdecl Destroy(void *);
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#endif // MOS6502X_H
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