mirror of
https://github.com/garrettsworkshop/MacIIROMDiskDriver.git
synced 2024-06-12 07:29:30 +00:00
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
#ifndef RDTRAPS_H
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#define RDTRAPS_H
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#define RDiskSize (0x00180000L)
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#define RDiskBuf ((char*)0x40880000)
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#define BufPtr ((Ptr*)0x10C)
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#define MemTop ((Ptr*)0x108)
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#define MMU32bit ((char*)0xCB2)
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#define JIODone ((char*)0x8FC)
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#pragma parameter __D0 RDiskReadXPRAM(__D0, __D1, __A0)
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OSErr RDiskReadXPRAM(short numBytes, short whichByte, void *dest) = {0x4840, 0x3001, 0xA051};
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// Other definition of RDiskAddDrive with register calling convention
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//#pragma parameter __D0 RDiskAddDrive(__D1, __D0, __A0)
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//OSErr RDiskAddDrive(short numBytes, short whichByte, void *dest) = {0x4840, 0x3001, 0xA04E};
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OSErr RDiskAddDrive(short drvrRefNum, short drvNum, DrvQElPtr dq) {
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__asm__ __volatile__ (
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"clr.l %%D0 \n\t"
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"move.w %1,%%D0 \n\t"
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"swap %%D0 \n\t"
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"move.w %0,%%D0 \n\t"
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"movea.l %2,%%A0 \n\t"
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".word 0xA04E \n\t"
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: /* outputs */
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: "g"(drvrRefNum), "g"(drvNum), "g"(dq) /* inputs */
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: /* clobbered */);
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}
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inline char RDiskIsRPressed() { return *((char*)0x175) & 0x80; }
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inline char RDiskIsAPressed() { return *((char*)0x174) & 0x01; }
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void RDiskBreak() = { 0xA9FF };
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typedef void (*RDiskCopy_t)(Ptr, Ptr, unsigned long);
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//#define RDISK_COMPRESS_ICON_ENABLE
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typedef struct RDiskStorage_s {
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DrvSts2 status;
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char initialized;
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char installed;
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char postBoot;
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Ptr ramdisk;
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#ifdef RDISK_COMPRESS_ICON_ENABLE
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char icon[285];
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#endif
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} RDiskStorage_t;
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#define copy24(s, d, b) { RDiskCopy_t copy24 = (RDiskCopy_t)RDiskCopy24; copy24(s, d, b); }
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#define PackBits_Repeat(count) ((-1) * (count - 1))
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#define PackBits_Literal(count) (count - 1)
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#endif
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