Macintosh-HW/MacIIROMDiskDriver
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This commit is contained in:
Zane Kaminski 2020-06-24 14:12:33 -04:00
parent 410a4d37b6
commit 65a426ed5e
1 changed files with 15 additions and 15 deletions
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30
rdisk.c
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@ -103,11 +103,11 @@ OSErr RDiskInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
c->init_done = 1; c->init_done = 1;
// Read PRAM // Read PRAM
RDReadXPRAM(1, 4, &startup); /*RDReadXPRam(1, 4, &startup);
RDReadXPRAM(1, 5, &ram); RDReadXPRam(1, 5, &ram);*/
// Either enable ROM disk or remove ourselves from the drive queue // Either enable ROM disk or remove ourselves from the drive queue
if (startup || RDIsRPressed()) { // If ROM disk boot set in PRAM or R pressed, /*if (startup || RDIsRPressed()) { // If ROM disk boot set in PRAM or R pressed,*/
// Set ROM disk attributes // Set ROM disk attributes
c->drvsts.writeProt = -1; // Set write protected c->drvsts.writeProt = -1; // Set write protected
// Clear disk fields (even though we used NewHandleSysClear) // Clear disk fields (even though we used NewHandleSysClear)
@ -115,7 +115,7 @@ OSErr RDiskInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
c->ramdisk_alloc = NULL; c->ramdisk_alloc = NULL;
c->ramdisk_valid = 0; c->ramdisk_valid = 0;
// If RAM disk set in PRAM or A pressed, enable RAM disk // If RAM disk set in PRAM or A pressed, enable RAM disk
if (ram || RDISAPressed()) { /*if (ram || RDISAPressed()) {
unsigned long minBufPtr, newBufPtr; unsigned long minBufPtr, newBufPtr;
// Clearing write protect marks RAM disk enabled // Clearing write protect marks RAM disk enabled
c->drvsts.writeProt = 0; c->drvsts.writeProt = 0;
@ -133,9 +133,9 @@ OSErr RDiskInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
// Enable accRun to allocate and copy later // Enable accRun to allocate and copy later
d->dCtlFlags |= dNeedTimeMask; d->dCtlFlags |= dNeedTimeMask;
d->dCtlDelay = 0x10; d->dCtlDelay = 0x10;
} }*/
return noErr; return noErr;
} else { // Otherwise if R not held down and ROM boot not set in PRAM, /*} else { // Otherwise if R not held down and ROM boot not set in PRAM,
// Remove our driver from the drive queue // Remove our driver from the drive queue
DrvQElPtr dq; DrvQElPtr dq;
QHdrPtr QHead = (QHdrPtr)0x308; QHdrPtr QHead = (QHdrPtr)0x308;
@ -155,7 +155,7 @@ OSErr RDiskInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
// Return disk offline error // Return disk offline error
return offLinErr; return offLinErr;
} }*/
} }
#pragma parameter __D0 RDiskPrime(__A0, __A1) #pragma parameter __D0 RDiskPrime(__A0, __A1)
@ -179,8 +179,7 @@ OSErr RDiskPrime(IOParamPtr p, DCtlPtr d) {
} }
// Get pointer to RAM or ROM disk buffer // Get pointer to RAM or ROM disk buffer
disk = c->ramdisk && c->ramdisk_valid ? c->ramdisk : RDiskBuf; disk = RDiskBuf; // c->ramdisk && c->ramdisk_valid ? c->ramdisk : RDiskBuf;
// Add offset to buffer pointer according to positioning mode // Add offset to buffer pointer according to positioning mode
switch (p->ioPosMode & 0x000F) { switch (p->ioPosMode & 0x000F) {
case fsAtMark: offset = d->dCtlPosition; break; case fsAtMark: offset = d->dCtlPosition; break;
@ -216,8 +215,9 @@ OSErr RDiskPrime(IOParamPtr p, DCtlPtr d) {
p->ioPosOffset = d->dCtlPosition = offset + p->ioReqCount; p->ioPosOffset = d->dCtlPosition = offset + p->ioReqCount;
return noErr; return noErr;
} else if (cmd == aWrCmd) { // Write } else if (cmd == aWrCmd) { // Write
// Fail if write protected or RAM disk buffer not set up return wPrErr;
if (c->drvsts.writeProt || disk == c->ramdisk) { return wPrErr; } /*// Fail if write protected or RAM disk buffer not set up
if (c->drvsts.writeProt || !c->ramdisk || !c->ramdisk_valid) { return wPrErr; }
// Write from buffer into disk. // Write from buffer into disk.
if (*MMU32bit) { BlockMove((char*)p->ioBuffer, disk, p->ioReqCount); } if (*MMU32bit) { BlockMove((char*)p->ioBuffer, disk, p->ioReqCount); }
else { // 24-bit addressing else { // 24-bit addressing
@ -227,12 +227,12 @@ OSErr RDiskPrime(IOParamPtr p, DCtlPtr d) {
// Update count and position/offset // Update count and position/offset
p->ioActCount = p->ioReqCount; p->ioActCount = p->ioReqCount;
p->ioPosOffset = d->dCtlPosition = offset + p->ioReqCount; p->ioPosOffset = d->dCtlPosition = offset + p->ioReqCount;
return noErr; return noErr;*/
} else { return noErr; } } else { return noErr; }
//FIXME: Should we fail if cmd isn't read or write? //FIXME: Should we fail if cmd isn't read or write?
} }
OSErr RDiskAccRun(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) { /*OSErr RDiskAccRun(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
// Disable accRun // Disable accRun
d->dCtlDelay = 0; d->dCtlDelay = 0;
d->dCtlFlags &= ~dNeedTimeMask; d->dCtlFlags &= ~dNeedTimeMask;
@ -270,7 +270,7 @@ OSErr RDiskAccRun(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
} }
return noErr; // Always return success return noErr; // Always return success
} }*/
#pragma parameter __D0 RDiskControl(__A0, __A1) #pragma parameter __D0 RDiskControl(__A0, __A1)
OSErr RDiskControl(IOParamPtr p, DCtlPtr d) { OSErr RDiskControl(IOParamPtr p, DCtlPtr d) {
@ -282,7 +282,7 @@ OSErr RDiskControl(IOParamPtr p, DCtlPtr d) {
// Handle control request based on csCode // Handle control request based on csCode
switch (((CntrlParamPtr)p)->csCode) { switch (((CntrlParamPtr)p)->csCode) {
case accRun: return RDiskAccRun(p, d, c); //case accRun: return RDiskAccRun(p, d, c);
default: return controlErr; default: return controlErr;
} }
} }