[ViewVC] Diff of: cebix/BasiliskII/src/rom

Comparing BasiliskII/src/rom_patches.cpp (file contents):
Revision 1.11 by cebix, 1999-10-27T16:59:38Z vs.
Revision 1.17 by gbeauche, 2000-09-22T17:17:21Z

#	Line 1 \| Line 1
1		/*
2		* rom_patches.cpp - ROM patches
3		*
4	<	* Basilisk II (C) 1997-1999 Christian Bauer
4	>	* Basilisk II (C) 1997-2000 Christian Bauer
5		*
6		* This program is free software; you can redistribute it and/or modify
7		* it under the terms of the GNU General Public License as published by
#	Line 44 \| Line 44 \| uint32 PutScrapPatch; // Mac address of
44		uint32 ROMBreakpoint = 0; // ROM offset of breakpoint (0 = disabled, 0x2310 = CritError)
45		bool PrintROMInfo = false; // Flag: print ROM information in PatchROM()
46
47	<	static uint32 sony_offset; // ROM offset of .Sony driver
48	<	static uint32 serd_offset; // ROM offset of SERD resource (serial drivers)
49	<	static uint32 microseconds_offset; // ROM offset of Microseconds() replacement routine
50	<	static uint32 memory_dispatch_offset; // ROM offset of MemoryDispatch() replacement routine
47	>	static uint32 sony_offset; // ROM offset of .Sony driver
48	>	static uint32 serd_offset; // ROM offset of SERD resource (serial drivers)
49	>	static uint32 microseconds_offset; // ROM offset of Microseconds() replacement routine
50	>	static uint32 debugutil_offset; // ROM offset of DebugUtil() replacement routine
51
52		// Prototypes
53		uint16 ROMVersion;
54
55
56		/*
57	+	* Convenience functions for retrieving a particular 16-bit word from
58	+	* a 32-bit word value.
59	+	*
60	+	* gb-- probably put those elsewhere...
61	+	*/
62	+
63	+	#define HiWord(X) (((X) >> 16) & 0xffff)
64	+	#define LoWord(X) ((X) & 0xffff)
65	+
66	+
67	+	/*
68		* Search ROM for byte string, return ROM offset (or 0)
69		*/
70
#	Line 82 \| Line 93 \| static uint32 find_rom_resource(uint32 s
93
94		if (!cont)
95		rsrc_ptr = x;
96	+	else
97	+	rsrc_ptr = ReadMacInt32(ROMBaseMac + rsrc_ptr + 8);
98
99		for (;;) {
100		lp = ROMBaseMac + rsrc_ptr;
#	Line 269 \| Line 282 \| static void list_universal_infos(void)
282		printf("Universal Table at %08x:\n", q);
283		printf("Offset\t ID\tHWCfg\tROM85\tModel\n");
284		printf("------------------------------------------------\n");
285	<	while (ofs = ReadMacInt32(ROMBaseMac + q)) {
285	>	while ((ofs = ReadMacInt32(ROMBaseMac + q))) {
286		print_universal_info(ROMBaseMac + ofs + q);
287		q += 4;
288		}
#	Line 692 \| Line 705 \| static const uint8 adbop_patch[] = { //
705
706		void InstallDrivers(uint32 pb)
707		{
708	<	D(bug("InstallDrivers\n"));
708	>	D(bug("InstallDrivers, pb %08x\n", pb));
709		M68kRegisters r;
710
711		// Install Microseconds() replacement routine
#	Line 700 \| Line 713 \| void InstallDrivers(uint32 pb)
713		r.d[0] = 0xa093;
714		Execute68kTrap(0xa247, &r); // SetOSTrapAddress()
715
716	<	// Install MemoryDispatch() replacement routine
717	<	r.a[0] = ROMBaseMac + memory_dispatch_offset;
718	<	r.d[0] = 0xa05c;
716	>	// Install DebugUtil() replacement routine
717	>	r.a[0] = ROMBaseMac + debugutil_offset;
718	>	r.d[0] = 0xa08d;
719		Execute68kTrap(0xa247, &r); // SetOSTrapAddress()
720
721		// Install disk driver
#	Line 816 \| Line 829 \| bool CheckROM(void)
829		// Read version
830		ROMVersion = ntohs((uint16 )(ROMBaseHost + 8));
831
832	<	#if REAL_ADDRESSING
833	<	// Real addressing mode requires a 32-bit clean ROM
832	>	#if REAL_ADDRESSING \|\| DIRECT_ADDRESSING
833	>	// Real and direct addressing modes require a 32-bit clean ROM
834		return ROMVersion == ROM_VERSION_32;
835		#else
836		// Virtual addressing mode works with 32-bit clean Mac II ROMs and Classic ROMs
#	Line 934 \| Line 947 \| static bool patch_rom_classic(void)
947		*wp++ = htons(M68K_RTS);
948		microseconds_offset = (uint8 *)wp - ROMBaseHost;
949		*wp++ = htons(M68K_EMUL_OP_MICROSECONDS);
950	+	*wp++ = htons(M68K_RTS);
951	+
952	+	// Replace DebugUtil
953	+	debugutil_offset = (uint8 *)wp - ROMBaseHost;
954	+	*wp++ = htons(M68K_EMUL_OP_DEBUGUTIL);
955		*wp = htons(M68K_RTS);
956
957		// Replace SCSIDispatch()
#	Line 1196 \| Line 1214 \| static bool patch_rom_32(void)
1214		*wp = htons(M68K_RTS);
1215
1216		// Fake CPU speed test (SetupTimeK)
1217	+	// *** increased jl : MacsBug uses TimeDBRA for kbd repeat timing
1218		wp = (uint16 *)(ROMBaseHost + 0x800);
1219		*wp++ = htons(0x31fc); // move.w #xxx,TimeDBRA
1220	<	*wp++ = htons(100);
1220	>	*wp++ = htons(10000);
1221		*wp++ = htons(0x0d00);
1222		*wp++ = htons(0x31fc); // move.w #xxx,TimeSCCDBRA
1223	<	*wp++ = htons(100);
1223	>	*wp++ = htons(10000);
1224		*wp++ = htons(0x0d02);
1225		*wp++ = htons(0x31fc); // move.w #xxx,TimeSCSIDBRA
1226	<	*wp++ = htons(100);
1226	>	*wp++ = htons(10000);
1227		*wp++ = htons(0x0b24);
1228		*wp++ = htons(0x31fc); // move.w #xxx,TimeRAMDBRA
1229	<	*wp++ = htons(100);
1229	>	*wp++ = htons(10000);
1230		*wp++ = htons(0x0cea);
1231		*wp = htons(M68K_RTS);
1232
1233		#if REAL_ADDRESSING
1234		// Move system zone to start of Mac RAM
1235	<	lp = (uint32 *)(ROMBaseHost + 0x50a);
1236	<	*lp++ = htonl(RAMBaseMac);
1237	<	*lp = htonl(RAMBaseMac + 0x1800);
1235	>	wp = (uint16 *)(ROMBaseHost + 0x50a);
1236	>	*wp++ = htons(HiWord(RAMBaseMac + 0x2000));
1237	>	*wp++ = htons(LoWord(RAMBaseMac + 0x2000));
1238	>	*wp++ = htons(HiWord(RAMBaseMac + 0x3800));
1239	>	*wp = htons(LoWord(RAMBaseMac + 0x3800));
1240		#endif
1241
1242		#if !ROM_IS_WRITE_PROTECTED
1243	<	#if defined(AMIGA)
1243	>	#if defined(AMIGA) \|\| defined(USE_SCRATCHMEM_SUBTERFUGE)
1244		// Set fake handle at 0x0000 to scratch memory area (so broken Mac programs won't write into Mac ROM)
1245	<	extern uint32 ScratchMem;
1245	>	extern uint8 *ScratchMem;
1246	>	const uint32 ScratchMemBase = Host2MacAddr(ScratchMem);
1247		wp = (uint16 *)(ROMBaseHost + 0xccaa);
1248		*wp++ = htons(0x203c); // move.l #ScratchMem,d0
1249	<	*wp++ = htons(ScratchMem >> 16);
1250	<	*wp = htons(ScratchMem);
1249	>	*wp++ = htons(ScratchMemBase >> 16);
1250	>	*wp = htons(ScratchMemBase);
1251		#else
1252		#error System specific handling for writable ROM is required here
1253		#endif
#	Line 1237 \| Line 1259 \| static bool patch_rom_32(void)
1259		*wp++ = htons(M68K_NOP);
1260		*wp = htons(M68K_NOP);
1261		#endif
1262	<
1262	>
1263	>	#if REAL_ADDRESSING && !defined(AMIGA)
1264	>	// gb-- Temporary hack to get rid of crashes in Speedometer
1265	>	wp = (uint16 *)(ROMBaseHost + 0xdba2);
1266	>	if (ntohs(*wp) == 0x662c) // bne.b #$2c
1267	>	*wp = htons(0x602c); // bra.b #$2c
1268	>	#endif
1269	>
1270		// Don't write to VIA in InitTimeMgr
1271		wp = (uint16 *)(ROMBaseHost + 0xb0e2);
1272		*wp++ = htons(0x4cdf); // movem.l (sp)+,d0-d5/a0-a4
#	Line 1459 \| Line 1488 \| static bool patch_rom_32(void)
1488		static const uint8 memdisp_dat[] = {0x30, 0x3c, 0xa8, 0x9f, 0xa7, 0x46, 0x30, 0x3c, 0xa0, 0x5c, 0xa2, 0x47};
1489		base = find_rom_data(0x4f100, 0x4f180, memdisp_dat, sizeof(memdisp_dat));
1490		D(bug("memdisp %08lx\n", base));
1491	<	if (base) { // ROM15/32
1491	>	if (base) { // ROM15/22/23/26/27/32
1492		wp = (uint16 *)(ROMBaseHost + base + 10);
1493		*wp = htons(M68K_NOP);
1494		}
1495
1496		// Patch .EDisk driver (don't scan for EDisks in the area ROMBase..0xe00000)
1497	<	uint32 edisk_offset = find_rom_resource('DRVR', 51);
1497	>	uint32 edisk_offset = find_rom_resource(FOURCC('D','R','V','R'), 51);
1498		if (edisk_offset) {
1499		static const uint8 edisk_dat[] = {0xd5, 0xfc, 0x00, 0x01, 0x00, 0x00, 0xb5, 0xfc, 0x00, 0xe0, 0x00, 0x00};
1500		base = find_rom_data(edisk_offset, edisk_offset + 0x10000, edisk_dat, sizeof(edisk_dat));
#	Line 1478 \| Line 1507 \| static bool patch_rom_32(void)
1507		}
1508
1509		// Replace .Sony driver
1510	<	sony_offset = find_rom_resource('DRVR', 4);
1510	>	sony_offset = find_rom_resource(FOURCC('D','R','V','R'), 4);
1511		D(bug("sony %08lx\n", sony_offset));
1512		memcpy(ROMBaseHost + sony_offset, sony_driver, sizeof(sony_driver));
1513
#	Line 1497 \| Line 1526 \| static bool patch_rom_32(void)
1526		memcpy(ROMBaseHost + sony_offset + 0xa00, CDROMIcon, sizeof(CDROMIcon));
1527
1528		// Install SERD patch and serial drivers
1529	<	serd_offset = find_rom_resource('SERD', 0);
1529	>	serd_offset = find_rom_resource(FOURCC('S','E','R','D'), 0);
1530		D(bug("serd %08lx\n", serd_offset));
1531		wp = (uint16 *)(ROMBaseHost + serd_offset + 12);
1532		*wp++ = htons(M68K_EMUL_OP_SERD);
#	Line 1530 \| Line 1559 \| static bool patch_rom_32(void)
1559		*wp++ = htons(M68K_RTS);
1560		microseconds_offset = (uint8 *)wp - ROMBaseHost;
1561		*wp++ = htons(M68K_EMUL_OP_MICROSECONDS);
1562	+	*wp++ = htons(M68K_RTS);
1563	+
1564	+	// Replace DebugUtil
1565	+	debugutil_offset = (uint8 *)wp - ROMBaseHost;
1566	+	*wp++ = htons(M68K_EMUL_OP_DEBUGUTIL);
1567		*wp = htons(M68K_RTS);
1568
1569		// Replace SCSIDispatch()
#	Line 1565 \| Line 1599 \| static bool patch_rom_32(void)
1599		*wp++ = htons(base >> 16);
1600		*wp = htons(base & 0xffff);
1601
1568	–	// Install MemoryDispatch() replacement routine (activated in PatchAfterStartup())
1569	–	memory_dispatch_offset = sony_offset + 0xc20;
1570	–	wp = (uint16 *)(ROMBaseHost + memory_dispatch_offset);
1571	–	*wp++ = htons(M68K_EMUL_OP_MEMORY_DISPATCH);
1572	–	*wp = htons(M68K_RTS);
1573	–
1602		#if EMULATED_68K
1603		// Replace BlockMove()
1604		wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa02e)); // BlockMove()
#	Line 1579 \| Line 1607 \| static bool patch_rom_32(void)
1607		*wp = htons(M68K_RTS);
1608		#endif
1609
1610	+	// Look for double PACK 4 resources
1611	+	if ((base = find_rom_resource(FOURCC('P','A','C','K'), 4)) == 0) return false;
1612	+	if ((base = find_rom_resource(FOURCC('P','A','C','K'), 4, true)) == 0 && FPUType == 0)
1613	+	printf("WARNING: This ROM seems to require an FPU\n");
1614	+
1615		// Patch VIA interrupt handler
1616		wp = (uint16 *)(ROMBaseHost + 0x9bc4); // Level 1 handler
1617		*wp++ = htons(0x7002); // moveq #2,d0 (always 60Hz interrupt)

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Comparing BasiliskII/src/rom_patches.cpp (file contents): Revision 1.11 by cebix, 1999-10-27T16:59:38Z vs. Revision 1.17 by gbeauche, 2000-09-22T17:17:21Z

Diff Legend

Comparing BasiliskII/src/rom_patches.cpp (file contents):
Revision 1.11 by cebix, 1999-10-27T16:59:38Z vs.
Revision 1.17 by gbeauche, 2000-09-22T17:17:21Z