| 30 |
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#include "disk.h" |
| 31 |
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#include "cdrom.h" |
| 32 |
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#include "video.h" |
| 33 |
+ |
#include "extfs.h" |
| 34 |
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#include "prefs.h" |
| 35 |
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#include "rom_patches.h" |
| 36 |
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|
| 38 |
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#include "debug.h" |
| 39 |
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|
| 40 |
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|
| 41 |
< |
// Breakpoint |
| 42 |
< |
//#define M68K_BREAKPOINT 0x2310 // CritError |
| 42 |
< |
//#define M68K_BREAKPOINT 0x1d10 // BootMe |
| 41 |
> |
// Breakpoint (offset into ROM) |
| 42 |
> |
uint32 ROMBreakpoint = 0; // 0 = disabled, 0x2310 = CritError |
| 43 |
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|
| 44 |
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// Global variables |
| 45 |
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uint32 UniversalInfo; // ROM offset of UniversalInfo |
| 46 |
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uint32 PutScrapPatch; // Mac address of PutScrap() patch |
| 47 |
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|
| 48 |
< |
static uint32 sony_offset; // ROM offset of .Sony driver |
| 49 |
< |
static uint32 serd_offset; // ROM offset of SERD resource (serial drivers) |
| 50 |
< |
static uint32 microseconds_offset; // ROM offset of Microseconds() replacement routine |
| 48 |
> |
static uint32 sony_offset; // ROM offset of .Sony driver |
| 49 |
> |
static uint32 serd_offset; // ROM offset of SERD resource (serial drivers) |
| 50 |
> |
static uint32 microseconds_offset; // ROM offset of Microseconds() replacement routine |
| 51 |
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static uint32 memory_dispatch_offset; // ROM offset of MemoryDispatch() replacement routine |
| 52 |
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|
| 53 |
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// Prototypes |
| 146 |
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|
| 147 |
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static const uint8 sony_driver[] = { // Replacement for .Sony driver |
| 148 |
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// Driver header |
| 149 |
< |
SonyDriverFlags >> 8, SonyDriverFlags & 0xff, SonyDriverDelay >> 8, SonyDriverDelay & 0xff, 0x00, 0x00, 0x00, 0x00, |
| 149 |
> |
SonyDriverFlags >> 8, SonyDriverFlags & 0xff, 0, 0, 0, 0, 0, 0, |
| 150 |
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0x00, 0x18, // Open() offset |
| 151 |
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0x00, 0x1c, // Prime() offset |
| 152 |
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0x00, 0x20, // Control() offset |
| 194 |
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|
| 195 |
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static const uint8 disk_driver[] = { // Generic disk driver |
| 196 |
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// Driver header |
| 197 |
< |
DiskDriverFlags >> 8, DiskDriverFlags & 0xff, DiskDriverDelay >> 8, DiskDriverDelay & 0xff, 0x00, 0x00, 0x00, 0x00, |
| 197 |
> |
DiskDriverFlags >> 8, DiskDriverFlags & 0xff, 0, 0, 0, 0, 0, 0, |
| 198 |
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0x00, 0x18, // Open() offset |
| 199 |
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0x00, 0x1c, // Prime() offset |
| 200 |
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0x00, 0x20, // Control() offset |
| 242 |
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|
| 243 |
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static const uint8 cdrom_driver[] = { // CD-ROM driver |
| 244 |
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// Driver header |
| 245 |
< |
CDROMDriverFlags >> 8, CDROMDriverFlags & 0xff, CDROMDriverDelay >> 8, CDROMDriverDelay & 0xff, 0x00, 0x00, 0x00, 0x00, |
| 245 |
> |
CDROMDriverFlags >> 8, CDROMDriverFlags & 0xff, 0, 0, 0, 0, 0, 0, |
| 246 |
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0x00, 0x1c, // Open() offset |
| 247 |
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0x00, 0x20, // Prime() offset |
| 248 |
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0x00, 0x24, // Control() offset |
| 546 |
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r.d[0] = 0xa093; |
| 547 |
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Execute68kTrap(0xa247, &r); // SetOSTrapAddress() |
| 548 |
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|
| 549 |
+ |
// Install MemoryDispatch() replacement routine |
| 550 |
+ |
r.a[0] = ROMBaseMac + memory_dispatch_offset; |
| 551 |
+ |
r.d[0] = 0xa05c; |
| 552 |
+ |
Execute68kTrap(0xa247, &r); // SetOSTrapAddress() |
| 553 |
+ |
|
| 554 |
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// Install disk driver |
| 555 |
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r.a[0] = ROMBaseMac + sony_offset + 0x100; |
| 556 |
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r.d[0] = (uint32)DiskRefNum; |
| 560 |
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uint32 dce = ReadMacInt32(r.a[0]); |
| 561 |
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WriteMacInt32(dce + dCtlDriver, ROMBaseMac + sony_offset + 0x100); |
| 562 |
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WriteMacInt16(dce + dCtlFlags, DiskDriverFlags); |
| 558 |
– |
WriteMacInt16(dce + dCtlDelay, DiskDriverDelay); |
| 563 |
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|
| 564 |
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// Open disk driver |
| 565 |
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WriteMacInt32(pb + ioNamePtr, ROMBaseMac + sony_offset + 0x112); |
| 578 |
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dce = ReadMacInt32(r.a[0]); |
| 579 |
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WriteMacInt32(dce + dCtlDriver, ROMBaseMac + sony_offset + 0x200); |
| 580 |
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WriteMacInt16(dce + dCtlFlags, CDROMDriverFlags); |
| 577 |
– |
WriteMacInt16(dce + dCtlDelay, CDROMDriverDelay); |
| 581 |
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|
| 582 |
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// Open CD-ROM driver |
| 583 |
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WriteMacInt32(pb + ioNamePtr, ROMBaseMac + sony_offset + 0x212); |
| 646 |
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|
| 647 |
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void PatchAfterStartup(void) |
| 648 |
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{ |
| 649 |
< |
// Install MemoryDispatch() replacement routine |
| 650 |
< |
M68kRegisters r; |
| 651 |
< |
r.a[0] = ROMBaseMac + memory_dispatch_offset; |
| 652 |
< |
r.d[0] = 0xa05c; |
| 650 |
< |
Execute68kTrap(0xa247, &r); // SetOSTrapAddress() |
| 649 |
> |
#if SUPPORTS_EXTFS |
| 650 |
> |
// Install external file system |
| 651 |
> |
InstallExtFS(); |
| 652 |
> |
#endif |
| 653 |
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} |
| 654 |
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|
| 655 |
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|
| 666 |
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// Real addressing mode requires a 32-bit clean ROM |
| 667 |
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return ROMVersion == ROM_VERSION_32; |
| 668 |
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#else |
| 669 |
< |
// Virtual addressing mode works with 32-bit clean Mac II ROMs and Classic ROMs (experimental) |
| 669 |
> |
// Virtual addressing mode works with 32-bit clean Mac II ROMs and Classic ROMs |
| 670 |
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return (ROMVersion == ROM_VERSION_CLASSIC) || (ROMVersion == ROM_VERSION_32); |
| 671 |
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#endif |
| 672 |
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} |
| 1155 |
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*wp++ = htons(M68K_NOP); |
| 1156 |
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*wp = htons(M68K_NOP); |
| 1157 |
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|
| 1158 |
< |
// Fix logical/physical RAM size (CompBootStack) (must be done after InitMemMgr!) |
| 1159 |
< |
static const uint8 fix_memsize_dat[] = {0x4e, 0x75}; |
| 1160 |
< |
if ((base = find_rom_data(0x490, 0x4b0, fix_memsize_dat, sizeof(fix_memsize_dat))) == 0) return false; |
| 1161 |
< |
D(bug("fix_memsize %08lx\n", base)); |
| 1162 |
< |
wp = (uint16 *)(ROMBaseHost + base); |
| 1158 |
> |
// Compute boot stack pointer and fix logical/physical RAM size (CompBootStack) (must be done after InitMemMgr!) |
| 1159 |
> |
wp = (uint16 *)(ROMBaseHost + 0x490); |
| 1160 |
> |
*wp++ = htons(0x2038); // move.l $10c,d0 |
| 1161 |
> |
*wp++ = htons(0x010c); |
| 1162 |
> |
*wp++ = htons(0xd0b8); // add.l $2a6,d0 |
| 1163 |
> |
*wp++ = htons(0x02a6); |
| 1164 |
> |
*wp++ = htons(0xe288); // lsr.l #1,d0 |
| 1165 |
> |
*wp++ = htons(0x0880); // bclr #0,d0 |
| 1166 |
> |
*wp++ = htons(0x0000); |
| 1167 |
> |
*wp++ = htons(0x0440); // subi.w #$400,d0 |
| 1168 |
> |
*wp++ = htons(0x0400); |
| 1169 |
> |
*wp++ = htons(0x2040); // move.l d0,a0 |
| 1170 |
|
*wp++ = htons(M68K_EMUL_OP_FIX_MEMSIZE); |
| 1171 |
< |
*wp = htons(M68K_RTS); |
| 1171 |
> |
*wp++ = htons(M68K_RTS); |
| 1172 |
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|
| 1173 |
|
static const uint8 fix_memsize2_dat[] = {0x22, 0x30, 0x81, 0xe2, 0x0d, 0xdc, 0xff, 0xba, 0xd2, 0xb0, 0x81, 0xe2, 0x0d, 0xdc, 0xff, 0xec, 0x21, 0xc1, 0x1e, 0xf8}; |
| 1174 |
|
base = find_rom_data(0x4c000, 0x4c080, fix_memsize2_dat, sizeof(fix_memsize2_dat)); |
| 1301 |
|
} |
| 1302 |
|
} |
| 1303 |
|
|
| 1304 |
+ |
// Don't set MemoryDispatch() to unimplemented trap |
| 1305 |
+ |
static const uint8 memdisp_dat[] = {0x30, 0x3c, 0xa8, 0x9f, 0xa7, 0x46, 0x30, 0x3c, 0xa0, 0x5c, 0xa2, 0x47}; |
| 1306 |
+ |
base = find_rom_data(0x4f100, 0x4f180, memdisp_dat, sizeof(memdisp_dat)); |
| 1307 |
+ |
D(bug("memdisp %08lx\n", base)); |
| 1308 |
+ |
if (base) { // ROM15/32 |
| 1309 |
+ |
wp = (uint16 *)(ROMBaseHost + base + 10); |
| 1310 |
+ |
*wp = htons(M68K_NOP); |
| 1311 |
+ |
} |
| 1312 |
+ |
|
| 1313 |
|
// Patch .EDisk driver (don't scan for EDisks in the area ROMBase..0xe00000) |
| 1314 |
|
uint32 edisk_offset = find_rom_resource('DRVR', 51); |
| 1315 |
|
if (edisk_offset) { |
| 1417 |
|
*wp++ = htons(M68K_EMUL_OP_MEMORY_DISPATCH); |
| 1418 |
|
*wp = htons(M68K_RTS); |
| 1419 |
|
|
| 1420 |
+ |
#if EMULATED_68K |
| 1421 |
+ |
// Replace BlockMove() |
| 1422 |
+ |
wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa02e)); // BlockMove() |
| 1423 |
+ |
*wp++ = htons(M68K_EMUL_OP_BLOCK_MOVE); |
| 1424 |
+ |
*wp++ = htons(0x7000); |
| 1425 |
+ |
*wp = htons(M68K_RTS); |
| 1426 |
+ |
#endif |
| 1427 |
+ |
|
| 1428 |
|
// Patch VIA interrupt handler |
| 1429 |
|
wp = (uint16 *)(ROMBaseHost + 0x9bc4); // Level 1 handler |
| 1430 |
|
*wp++ = htons(0x7002); // moveq #2,d0 (always 60Hz interrupt) |
| 1462 |
|
return false; |
| 1463 |
|
} |
| 1464 |
|
|
| 1439 |
– |
#ifdef M68K_BREAKPOINT |
| 1465 |
|
// Install breakpoint |
| 1466 |
< |
uint16 *wp = (uint16 *)(ROMBaseHost + M68K_BREAKPOINT); |
| 1467 |
< |
*wp = htons(M68K_EMUL_BREAK); |
| 1468 |
< |
#endif |
| 1466 |
> |
if (ROMBreakpoint) { |
| 1467 |
> |
uint16 *wp = (uint16 *)(ROMBaseHost + ROMBreakpoint); |
| 1468 |
> |
*wp = htons(M68K_EMUL_BREAK); |
| 1469 |
> |
} |
| 1470 |
|
|
| 1471 |
|
// Clear caches as we loaded and patched code |
| 1472 |
|
FlushCodeCache(ROMBaseHost, ROMSize); |
