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/* |
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* rom_patches.cpp - ROM patches |
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* |
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< |
* Basilisk II (C) 1997-1999 Christian Bauer |
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* Basilisk II (C) 1997-2000 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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static uint32 sony_offset; // ROM offset of .Sony driver |
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static uint32 serd_offset; // ROM offset of SERD resource (serial drivers) |
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static uint32 microseconds_offset; // ROM offset of Microseconds() replacement routine |
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static uint32 memory_dispatch_offset; // ROM offset of MemoryDispatch() replacement routine |
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// Prototypes |
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uint16 ROMVersion; |
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if (!cont) |
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rsrc_ptr = x; |
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else |
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rsrc_ptr = ReadMacInt32(ROMBaseMac + rsrc_ptr + 8); |
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for (;;) { |
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lp = ROMBaseMac + rsrc_ptr; |
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printf("Universal Table at %08x:\n", q); |
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printf("Offset\t ID\tHWCfg\tROM85\tModel\n"); |
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printf("------------------------------------------------\n"); |
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while (ofs = ReadMacInt32(ROMBaseMac + q)) { |
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while ((ofs = ReadMacInt32(ROMBaseMac + q))) { |
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print_universal_info(ROMBaseMac + ofs + q); |
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q += 4; |
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} |
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void InstallDrivers(uint32 pb) |
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{ |
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D(bug("InstallDrivers\n")); |
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D(bug("InstallDrivers, pb %08x\n", pb)); |
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M68kRegisters r; |
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// Install Microseconds() replacement routine |
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r.d[0] = 0xa093; |
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Execute68kTrap(0xa247, &r); // SetOSTrapAddress() |
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// Install MemoryDispatch() replacement routine |
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r.a[0] = ROMBaseMac + memory_dispatch_offset; |
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r.d[0] = 0xa05c; |
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Execute68kTrap(0xa247, &r); // SetOSTrapAddress() |
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// Install disk driver |
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r.a[0] = ROMBaseMac + sony_offset + 0x100; |
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r.d[0] = (uint32)DiskRefNum; |
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#endif |
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#if !ROM_IS_WRITE_PROTECTED |
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#if defined(AMIGA) |
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#if defined(AMIGA) || defined(__NetBSD__) |
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// Set fake handle at 0x0000 to scratch memory area (so broken Mac programs won't write into Mac ROM) |
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extern uint32 ScratchMem; |
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wp = (uint16 *)(ROMBaseHost + 0xccaa); |
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static const uint8 memdisp_dat[] = {0x30, 0x3c, 0xa8, 0x9f, 0xa7, 0x46, 0x30, 0x3c, 0xa0, 0x5c, 0xa2, 0x47}; |
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base = find_rom_data(0x4f100, 0x4f180, memdisp_dat, sizeof(memdisp_dat)); |
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D(bug("memdisp %08lx\n", base)); |
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if (base) { // ROM15/32 |
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if (base) { // ROM15/22/23/26/27/32 |
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wp = (uint16 *)(ROMBaseHost + base + 10); |
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*wp = htons(M68K_NOP); |
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} |
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// Patch .EDisk driver (don't scan for EDisks in the area ROMBase..0xe00000) |
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uint32 edisk_offset = find_rom_resource('DRVR', 51); |
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uint32 edisk_offset = find_rom_resource(FOURCC('D','R','V','R'), 51); |
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if (edisk_offset) { |
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static const uint8 edisk_dat[] = {0xd5, 0xfc, 0x00, 0x01, 0x00, 0x00, 0xb5, 0xfc, 0x00, 0xe0, 0x00, 0x00}; |
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base = find_rom_data(edisk_offset, edisk_offset + 0x10000, edisk_dat, sizeof(edisk_dat)); |
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} |
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// Replace .Sony driver |
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sony_offset = find_rom_resource('DRVR', 4); |
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sony_offset = find_rom_resource(FOURCC('D','R','V','R'), 4); |
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D(bug("sony %08lx\n", sony_offset)); |
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memcpy(ROMBaseHost + sony_offset, sony_driver, sizeof(sony_driver)); |
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memcpy(ROMBaseHost + sony_offset + 0xa00, CDROMIcon, sizeof(CDROMIcon)); |
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// Install SERD patch and serial drivers |
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serd_offset = find_rom_resource('SERD', 0); |
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serd_offset = find_rom_resource(FOURCC('S','E','R','D'), 0); |
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D(bug("serd %08lx\n", serd_offset)); |
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wp = (uint16 *)(ROMBaseHost + serd_offset + 12); |
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*wp++ = htons(M68K_EMUL_OP_SERD); |
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*wp++ = htons(base >> 16); |
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*wp = htons(base & 0xffff); |
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// Install MemoryDispatch() replacement routine (activated in PatchAfterStartup()) |
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memory_dispatch_offset = sony_offset + 0xc20; |
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wp = (uint16 *)(ROMBaseHost + memory_dispatch_offset); |
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*wp++ = htons(M68K_EMUL_OP_MEMORY_DISPATCH); |
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*wp = htons(M68K_RTS); |
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#if EMULATED_68K |
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// Replace BlockMove() |
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wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa02e)); // BlockMove() |
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*wp = htons(M68K_RTS); |
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#endif |
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// Look for double PACK 4 resources |
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if ((base = find_rom_resource(FOURCC('P','A','C','K'), 4)) == 0) return false; |
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if ((base = find_rom_resource(FOURCC('P','A','C','K'), 4, true)) == 0 && FPUType == 0) |
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printf("WARNING: This ROM seems to require an FPU\n"); |
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// Patch VIA interrupt handler |
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wp = (uint16 *)(ROMBaseHost + 0x9bc4); // Level 1 handler |
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*wp++ = htons(0x7002); // moveq #2,d0 (always 60Hz interrupt) |
