Macintosh-HW/MacIIROMDiskDriver
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Add extra settings

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This commit is contained in:
Zane Kaminski 2021-03-04 12:44:11 -05:00
parent 0afd682ea6
commit 99ff56c41c
2 changed files with 43 additions and 22 deletions
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57
rdisk.c
View File

@ -9,31 +9,42 @@
#include "rdisk.h"
// Decode keyboard/PRAM settings
static void RDiskDecodeSettings(RDiskStorage_t *c, Ptr unmount, Ptr mount, Ptr ram) {
// Decode settings
if (RDiskIsRPressed()) { // R boots from ROM disk
*unmount = 0; // Don't unmount so we boot from this drive
*mount = 0; // No need to mount later since we are boot disk
*ram = RDiskIsAPressed(); // A enables RAM disk
} else {
static void RDDecodeSettings(Ptr unmountEN, Ptr mountEN, Ptr ramEN, Ptr dbgEN, Ptr cdromEN) {
// Read PRAM
char legacy_startup, legacy_ram;
RDiskReadXPRAM(1, 4, &legacy_startup);
RDiskReadXPRAM(1, 5, &legacy_ram);
if (legacy_startup & 1) { // Boot from ROM disk
*unmount = 0; // Don't unmount so we boot from this drive
*mount = 0; // No need to mount later since we are boot disk
*ram = legacy_ram & 1;
} else if (legacy_startup & 2) { // Mount ROM disk
*unmount = 1; // Unmount to not boot from our disk
*mount = 1; // Mount in accRun
*ram = legacy_ram & 1;
// Decode settings: unmount (don't boot), mount (after boot), RAM disk
if (RDiskIsRPressed()) { // R boots from ROM disk
*unmountEN = 0; // Don't unmount so we boot from this drive
*mountEN = 0; // No need to mount later since we are boot disk
*ramEN = RDiskIsAPressed(); // A enables RAM disk
} else {
*unmount = 1; // Unmount
*mount = 0; // Don't mount again
*ram = 0; // Don't allocate RAM disk
if (legacy_startup & 0x01) { // Boot from ROM disk
*unmountEN = 0; // Don't unmount so we boot from this drive
*mountEN = 0; // No need to mount later since we are boot disk
*ramEN = legacy_ram & 0x01;
} else if (legacy_startup & 0x02) { // Mount ROM disk
*unmountEN = 1; // Unmount to not boot from our disk
*mountEN = 1; // Mount in accRun
*ramEN = legacy_ram & 0x01;
} else {
*unmountEN = 1; // Unmount
*mountEN = 0; // Don't mount again
*ramEN = 0; // Don't allocate RAM disk
}
}
// MacsBug enabled if bit 3 == 1 or DBGDis addr invalid or not boot
*dbgEN = *unmountEN ||
(legacy_startup & 0x04) ||
(*RDiskDBGDisPos == 0);
// CDROM enabled if bit 3 == 0 or CDROMDis addr invalid or not boot
*cdromEN = *unmountEN ||
!(legacy_startup & 0x08) ||
(*RDiskCDROMDisPos == 0);
}
// Switch to 32-bit mode and copy
@ -105,12 +116,18 @@ OSErr RDOpen(IOParamPtr p, DCtlPtr d) {
}
// Init is called at beginning of first prime (read/write) call
char unmountEN, mountEN, ramEN;
static void RDInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
char unmountEN, mountEN, ramEN, dbgEN, cdromEN;
// Mark init done
c->initialized = 1;
// Decode settings
RDiskDecodeSettings(c, &unmountEN, &mountEN, &ramEN);
RDDecodeSettings(&unmountEN, &mountEN, &ramEN, &dbgEN, &cdromEN);
// Set debug and CD-ROM enable flags in storage struct
c->dbgEN = dbgEN;
c->cdromEN = cdromEN;
// Clear debug and CD-ROM overwrite flags
c->dbgOverwrite = 0;
c->cdromOverwrite = 0;
// If RAM disk enabled, try to allocate RAM disk buffer if not already
if (ramEN & !c->ramdisk) {

4
rdisk.h
View File

@ -28,6 +28,10 @@ typedef struct RDiskStorage_s {
DrvSts2 status;
char initialized;
Ptr ramdisk;
char dbgEN;
char dbgOverwrite;
char cdromEN;
char cdromOverwrite;
#ifdef RDISK_COMPRESS_ICON_ENABLE
char icon[RDISK_ICON_SIZE];
#endif