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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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#include "debug.h" |
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|
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// Breakpoint (offset into ROM) |
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uint32 ROMBreakpoint = 0; // 0 = disabled, 0x2310 = CritError |
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|
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// Global variables |
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uint32 UniversalInfo; // ROM offset of UniversalInfo |
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uint32 PutScrapPatch; // Mac address of PutScrap() patch |
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uint32 UniversalInfo; // ROM offset of UniversalInfo |
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uint32 PutScrapPatch; // Mac address of PutScrap() patch |
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uint32 ROMBreakpoint = 0; // ROM offset of breakpoint (0 = disabled, 0x2310 = CritError) |
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bool PrintROMInfo = false; // Flag: print ROM information in PatchROM() |
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|
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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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|
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// Prototypes |
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uint16 ROMVersion; |
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|
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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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|
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for (;;) { |
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lp = ROMBaseMac + rsrc_ptr; |
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|
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/* |
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* Print ROM information to stream, |
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*/ |
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|
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static void list_rom_resources(void) |
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{ |
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printf("ROM Resources:\n"); |
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printf("Offset\t Type\tID\tSize\tName\n"); |
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printf("------------------------------------------------\n"); |
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|
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uint32 lp = ROMBaseMac + ReadMacInt32(ROMBaseMac + 0x1a); |
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uint32 rsrc_ptr = ReadMacInt32(lp); |
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|
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for (;;) { |
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lp = ROMBaseMac + rsrc_ptr; |
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uint32 data = ReadMacInt32(lp + 12); |
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|
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char name[32]; |
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int name_len = ReadMacInt8(lp + 23), i; |
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for (i=0; i<name_len; i++) |
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name[i] = ReadMacInt8(lp + 24 + i); |
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name[i] = 0; |
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|
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printf("%08x %c%c%c%c\t%d\t%d\t%s\n", data, ReadMacInt8(lp + 16), ReadMacInt8(lp + 17), ReadMacInt8(lp + 18), ReadMacInt8(lp + 19), ReadMacInt16(lp + 20), ReadMacInt32(ROMBaseMac + data - 8), name); |
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|
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rsrc_ptr = ReadMacInt32(lp + 8); |
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if (!rsrc_ptr) |
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break; |
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} |
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printf("\n"); |
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} |
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|
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// Mapping of Model IDs to Model names |
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struct mac_desc { |
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char *name; |
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int32 id; |
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}; |
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|
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static mac_desc MacDesc[] = { |
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{"Classic" , 1}, |
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{"Mac XL" , 2}, |
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{"Mac 512KE" , 3}, |
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{"Mac Plus" , 4}, |
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{"Mac SE" , 5}, |
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{"Mac II" , 6}, |
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{"Mac IIx" , 7}, |
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{"Mac IIcx" , 8}, |
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{"Mac SE/030" , 9}, |
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{"Mac Portable" , 10}, |
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{"Mac IIci" , 11}, |
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{"Mac IIfx" , 13}, |
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{"Mac Classic" , 17}, |
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{"Mac IIsi" , 18}, |
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{"Mac LC" , 19}, |
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{"Quadra 900" , 20}, |
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{"PowerBook 170" , 21}, |
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{"Quadra 700" , 22}, |
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{"Classic II" , 23}, |
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{"PowerBook 100" , 24}, |
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{"PowerBook 140" , 25}, |
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{"Quadra 950" , 26}, |
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{"Mac LCIII/Performa 450", 27}, |
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{"PowerBook Duo 210" , 29}, |
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{"Centris 650" , 30}, |
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{"PowerBook Duo 230" , 32}, |
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{"PowerBook 180" , 33}, |
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{"PowerBook 160" , 34}, |
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{"Quadra 800" , 35}, |
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{"Quadra 650" , 36}, |
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{"Mac LCII" , 37}, |
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{"PowerBook Duo 250" , 38}, |
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{"Mac IIvi" , 44}, |
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{"Mac IIvm/Performa 600", 45}, |
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{"Mac IIvx" , 48}, |
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{"Color Classic/Performa 250", 49}, |
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{"PowerBook 165c" , 50}, |
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{"Centris 610" , 52}, |
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{"Quadra 610" , 53}, |
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{"PowerBook 145" , 54}, |
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{"Mac LC520" , 56}, |
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{"Quadra/Centris 660AV" , 60}, |
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{"Performa 46x" , 62}, |
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{"PowerBook 180c" , 71}, |
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{"PowerBook 520/520c/540/540c", 72}, |
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{"PowerBook Duo 270c" , 77}, |
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{"Quadra 840AV" , 78}, |
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{"Performa 550" , 80}, |
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{"PowerBook 165" , 84}, |
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{"PowerBook 190" , 85}, |
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{"Mac TV" , 88}, |
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{"Mac LC475/Performa 47x", 89}, |
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{"Mac LC575" , 92}, |
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{"Quadra 605" , 94}, |
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{"Quadra 630" , 98}, |
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{"Mac LC580" , 99}, |
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{"PowerBook Duo 280" , 102}, |
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{"PowerBook Duo 280c" , 103}, |
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{"PowerBook 150" , 115}, |
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{"unknown", -1} |
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}; |
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|
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static void print_universal_info(uint32 info) |
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{ |
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uint8 id = ReadMacInt8(info + 18); |
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uint16 hwcfg = ReadMacInt16(info + 16); |
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uint16 rom85 = ReadMacInt16(info + 20); |
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|
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// Find model name |
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char *name = "unknown"; |
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for (int i=0; MacDesc[i].id >= 0; i++) |
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if (MacDesc[i].id == id + 6) { |
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name = MacDesc[i].name; |
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break; |
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} |
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|
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printf("%08x %02x\t%04x\t%04x\t%s\n", info - ROMBaseMac, id, hwcfg, rom85, name); |
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} |
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|
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static void list_universal_infos(void) |
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{ |
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uint32 ofs = 0x3000; |
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for (int i=0; i<0x2000; i+=2, ofs+=2) |
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if (ReadMacInt32(ROMBaseMac + ofs) == 0xdc000505) { |
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ofs -= 16; |
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uint32 q; |
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for (q=ofs; q > 0 && ReadMacInt32(ROMBaseMac + q) != ofs - q; q-=4) ; |
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if (q > 0) { |
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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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print_universal_info(ROMBaseMac + ofs + q); |
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q += 4; |
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} |
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} |
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break; |
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} |
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printf("\n"); |
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} |
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|
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static void print_rom_info(void) |
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{ |
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printf("\nROM Info:\n"); |
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printf("Checksum : %08x\n", ReadMacInt32(ROMBaseMac)); |
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printf("Version : %04x\n", ROMVersion); |
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printf("Sub Version : %04x\n", ReadMacInt16(ROMBaseMac + 18)); |
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printf("Resource Map: %08x\n", ReadMacInt32(ROMBaseMac + 26)); |
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printf("Trap Tables : %08x\n\n", ReadMacInt32(ROMBaseMac + 34)); |
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if (ROMVersion == ROM_VERSION_32) { |
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list_rom_resources(); |
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list_universal_infos(); |
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} |
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} |
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|
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|
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/* |
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* Driver stubs |
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*/ |
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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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|
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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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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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*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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|
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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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|
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// Look for double PACK 4 resources |
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if ((base = find_rom_resource('PACK', 4)) == 0) return false; |
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if ((base = find_rom_resource('PACK', 4, true)) == 0 && FPUType == 0) |
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printf("WARNING: This ROM seems to require an FPU\n"); |
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|
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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) |
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bool PatchROM(void) |
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{ |
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// Print ROM info |
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D(bug("ROM Info:\n")); |
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D(bug("Checksum: %08lx\n", ReadMacInt32(ROMBaseMac))); |
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D(bug("Version: %04x\n", ROMVersion)); |
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D(bug("Sub Version: %04x\n", ReadMacInt16(ROMBaseMac + 18))); |
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// Print some information about the ROM |
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if (PrintROMInfo) |
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print_rom_info(); |
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// Patch ROM depending on version |
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switch (ROMVersion) { |