mirror of
https://github.com/dschmenk/Appalm.git
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72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
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typedef UInt8 (*READBYTE)(UInt16);
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typedef void (*WRITEBYTE)(UInt16, UInt8);
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typedef void (*VIDIMAGE)(void);
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extern Boolean dirtyVideo;
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extern UInt8 *AppleMemory;
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extern UInt8 *AuxMemory;
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extern UInt8 *AppleROM;
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extern UInt8 *BootROM;
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extern READBYTE *ReadFunction;
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extern WRITEBYTE *WriteFunction;
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extern VIDIMAGE updateVideo;
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extern UInt16 clrPairEven[96], clrPairOdd[96], interpPairEven[96], interpPairOdd[96];
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void initMemory(void);
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void initVideo(void);
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void setMemFuncs(void);
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void setVideoFuncs(Boolean);
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void loadROM(void);
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int getCurrentDrive(void);
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void showCurrentDisk(void);
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int mountDisk(int, char *, Boolean);
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void umountDisk(int);
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void positionDisk(int, UInt16, UInt16);
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void queryDisk(int, UInt16 *, UInt16 *);
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void resetDisks(void);
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/*
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* Macros to wrap a C function for assembly linkeage to emulator
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* memory R/W routines.
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*/
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#define WRMEM_CWRAP(fn,a,d) \
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void fn(UInt16,UInt8); \
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void cwrap_##fn(UInt16,UInt8); \
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void awrap_##fn(UInt16 a, UInt8 d) \
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{ \
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asm(".global "#fn); \
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asm(#fn ":"); \
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asm("movem.l #0x1FFF, state6502@END.w(%a5)"); \
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asm("move.b %d0, -(%sp)"); \
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asm("move.w %d6, -(%sp)"); \
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asm("bsr.w cwrap_"#fn); \
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asm("addq.l #4, %sp"); \
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asm("movem.l state6502@END.w(%a5), #0x1FFF"); \
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asm("rts"); \
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} \
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void cwrap_##fn(UInt16 a, UInt8 d)
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#define RDMEM_CWRAP(fn,a) \
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UInt8 fn(UInt16); \
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UInt8 cwrap_##fn(UInt16); \
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UInt8 awrap_##fn(UInt16 a) \
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{ \
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asm(".global "#fn); \
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asm(#fn ":"); \
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asm("movem.l #0x1FFE, (state6502+4)@END.w(%a5)");\
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asm("move.w %d6, -(%sp)"); \
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asm("bsr.w cwrap_"#fn); \
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asm("addq.l #2, %sp"); \
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asm("and.l #0xFF,%d0"); \
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asm("movem.l (state6502+4)@END.w(%a5), #0x1FFE");\
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asm("rts"); \
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} \
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UInt8 cwrap_##fn(UInt16 a)
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/*
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* Keyboard type-ahead buffer.
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*/
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#define KBD_BUF_SIZE 16
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#define KBD_BUF_MASK 15
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extern UInt8 kbdBuffer[KBD_BUF_SIZE];
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extern UInt8 kbdHead, kbdCount;
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