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MacIIROMDiskDriver
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24/32 bit fix in RDInit?

This commit is contained in:
Zane Kaminski 2021-03-31 19:44:41 -04:00
parent d7b8e2bf9a
commit 40007cfa47
3 changed files with 9 additions and 3 deletions
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12
rdisk.c
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@ -126,6 +126,8 @@ static void RDInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
c->dbgEN = dbgEN;
c->cdromEN = cdromEN;
char dis = 0x44;
// If RAM disk enabled, try to allocate RAM disk buffer if not already
if (ramEN & !c->ramdisk) {
if (*MMU32bit) { // 32-bit mode
@ -142,6 +144,10 @@ static void RDInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
BlockMove(RDiskBuf, c->ramdisk, RDiskSize);
// Clearing write protect marks RAM disk enabled
c->status.writeProt = 0;
// Patch debug and CD-ROM enable bytes
BlockMove(&dis/*RDiskDBGDisByte*/, &c->ramdisk[*RDiskDBGDisPos], 1);
BlockMove(&dis/*RDiskCDROMDisByte*/, &c->ramdisk[*RDiskCDROMDisPos], 1);
}
} else { // 24-bit mode
// Put RAM disk just past 8MB
@ -154,14 +160,14 @@ static void RDInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
// Will this wrap around and overwrite low memory?
// That's not the worst, since the system would just crash,
// but it would be better to switch to read-only status
// Patch debug and CD-ROM enable bytes
copy24(&dis/*RDiskDBGDisByte*/, &c->ramdisk[*RDiskDBGDisPos], 1);
copy24(&dis/*RDiskCDROMDisByte*/, &c->ramdisk[*RDiskCDROMDisPos], 1);
}
// Patch debug and CD-ROM enable bytes
char dis = 0x44;
//if (!c->dbgEN) {
copy24(&dis/*RDiskDBGDisByte*/, &c->ramdisk[*RDiskDBGDisPos], 1);
//}
//if (!c->cdromEN) {
copy24(&dis/*RDiskCDROMDisByte*/, &c->ramdisk[*RDiskCDROMDisPos], 1);
//}
}