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#define LOWORD(lWord) ((WORD)(lWord))
#define HIWORD(lWord) ((WORD)((LONG)(lWord) >> 16))
class RegInst {
static RegInst *MappedInst;
int Valid;
int Mapped;
int MapSpace;
unsigned int PageStart, PageCount;
UBYTE *SuggestedAddr;
protected:
INST Inst;
UBYTE *BaseAddr;
void Unmap(void);
public:
RegInst(UWORD lAddr = 0);
~ RegInst(void);
int IsValid(void) { return (this != NULL && Valid); }
INST GetInstID(void) { return Inst; }
void SetMapping(int mapSpace, unsigned int pageStart, unsigned int pageCount,
UBYTE *suggestedAddr);
void Map(void);
UBYTE bGet(UWORD offset) { if (!Mapped) Map(); return ibpeek((UBYTE *)
(BaseAddr+offset)); }
void bSet(UWORD offset, UBYTE value = 0) { if (!Mapped) Map(); ibpoke((UBYTE *)
(BaseAddr+offset),value); }
UWORD wGet(UWORD offset) { if (!Mapped) Map(); return iwpeek((UWORD *)
(BaseAddr+offset)); }
void wSet(UWORD offset, UWORD value = 0) { if (!Mapped) Map(); iwpoke((UWORD *)
(BaseAddr+offset),value); }
void wMGet(UWORD offset, UWORD *dest, ULONG count) {
if (!Mapped) Map(); iwpopfifo(Inst,(UWORD *) (BaseAddr+offset),dest,count,1);
}
void wMSet(UWORD offset, UWORD *src, ULONG count) {
if (!Mapped) Map(); iwpushfifo(Inst,(UWORD *) (BaseAddr+offset),src,count,1);
}
void lMGet(UWORD offset, ULONG *dest, ULONG count) {
if (!Mapped) Map(); ilpopfifo(Inst,(ULONG *) (BaseAddr+offset),dest,count,1);
}
void lMSet(UWORD offset, ULONG *src, ULONG count) {
if (!Mapped) Map(); ilpushfifo(Inst,(ULONG *) (BaseAddr+offset),src,count,1);
}
};
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78 Usin
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the Di
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itizer Chapter 2