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

Comparing BasiliskII/src/rom_patches.cpp (file contents):
Revision 1.13 by cebix, 2000-04-10T18:52:26Z vs.
Revision 1.20 by gbeauche, 2001-02-10T11:37:42Z

#	Line 1 \| Line 1
1		/*
2		* rom_patches.cpp - ROM patches
3		*
4	<	* Basilisk II (C) 1997-2000 Christian Bauer
4	>	* Basilisk II (C) 1997-2001 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 43 \| Line 43 \| uint32 UniversalInfo; // ROM offset of
43		uint32 PutScrapPatch; // Mac address of PutScrap() patch
44		uint32 ROMBreakpoint = 0; // ROM offset of breakpoint (0 = disabled, 0x2310 = CritError)
45		bool PrintROMInfo = false; // Flag: print ROM information in PatchROM()
46	+	bool PatchHWBases = true; // Flag: patch hardware base addresses
47
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	>	static uint32 debugutil_offset; // ROM offset of DebugUtil() replacement routine
52
53		// Prototypes
54		uint16 ROMVersion;
55
56	+	/*
57	+	* Macros used to extract one of the 16-bit words from a 32-bit word value
58	+	*/
59	+
60	+	#define HiWord(X) (((X) >> 16) & 0xffff)
61	+	#define LoWord(X) ((X) & 0xffff)
62	+
63
64		/*
65		* Search ROM for byte string, return ROM offset (or 0)
#	Line 270 \| Line 279 \| static void list_universal_infos(void)
279		printf("Universal Table at %08x:\n", q);
280		printf("Offset\t ID\tHWCfg\tROM85\tModel\n");
281		printf("------------------------------------------------\n");
282	<	while (ofs = ReadMacInt32(ROMBaseMac + q)) {
282	>	while ((ofs = ReadMacInt32(ROMBaseMac + q))) {
283		print_universal_info(ROMBaseMac + ofs + q);
284		q += 4;
285		}
#	Line 693 \| Line 702 \| static const uint8 adbop_patch[] = { //
702
703		void InstallDrivers(uint32 pb)
704		{
705	<	D(bug("InstallDrivers\n"));
705	>	D(bug("InstallDrivers, pb %08x\n", pb));
706		M68kRegisters r;
707
708		// Install Microseconds() replacement routine
#	Line 701 \| Line 710 \| void InstallDrivers(uint32 pb)
710		r.d[0] = 0xa093;
711		Execute68kTrap(0xa247, &r); // SetOSTrapAddress()
712
713	+	// Install DebugUtil() replacement routine
714	+	r.a[0] = ROMBaseMac + debugutil_offset;
715	+	r.d[0] = 0xa08d;
716	+	Execute68kTrap(0xa247, &r); // SetOSTrapAddress()
717	+
718		// Install disk driver
719		r.a[0] = ROMBaseMac + sony_offset + 0x100;
720		r.d[0] = (uint32)DiskRefNum;
#	Line 812 \| Line 826 \| bool CheckROM(void)
826		// Read version
827		ROMVersion = ntohs((uint16 )(ROMBaseHost + 8));
828
829	<	#if REAL_ADDRESSING
830	<	// Real addressing mode requires a 32-bit clean ROM
829	>	#if REAL_ADDRESSING \|\| DIRECT_ADDRESSING
830	>	// Real and direct addressing modes require a 32-bit clean ROM
831		return ROMVersion == ROM_VERSION_32;
832		#else
833		// Virtual addressing mode works with 32-bit clean Mac II ROMs and Classic ROMs
#	Line 930 \| Line 944 \| static bool patch_rom_classic(void)
944		*wp++ = htons(M68K_RTS);
945		microseconds_offset = (uint8 *)wp - ROMBaseHost;
946		*wp++ = htons(M68K_EMUL_OP_MICROSECONDS);
947	+	*wp++ = htons(M68K_RTS);
948	+
949	+	// Replace DebugUtil
950	+	debugutil_offset = (uint8 *)wp - ROMBaseHost;
951	+	*wp++ = htons(M68K_EMUL_OP_DEBUGUTIL);
952		*wp = htons(M68K_RTS);
953
954		// Replace SCSIDispatch()
#	Line 1010 \| Line 1029 \| static bool patch_rom_32(void)
1029		bp = ROMBaseHost + UniversalInfo + 18; // productKind
1030		*bp = PrefsFindInt32("modelid");
1031
1032	+	#if !ROM_IS_WRITE_PROTECTED
1033	+	#if defined(USE_SCRATCHMEM_SUBTERFUGE)
1034	+	// Set hardware base addresses to scratch memory area
1035	+	if (PatchHWBases) {
1036	+	extern uint8 *ScratchMem;
1037	+	const uint32 ScratchMemBase = Host2MacAddr(ScratchMem);
1038	+
1039	+	D(bug("LMGlob\tOfs/4\tBase\n"));
1040	+	base = ROMBaseMac + UniversalInfo + ReadMacInt32(ROMBaseMac + UniversalInfo); // decoderInfoPtr
1041	+	wp = (uint16 *)(ROMBaseHost + 0x94a);
1042	+	while (*wp != 0xffff) {
1043	+	int16 ofs = ntohs(*wp++); // offset in decoderInfo (/4)
1044	+	int16 lmg = ntohs(*wp++); // address of LowMem global
1045	+	D(bug("0x%04x\t%d\t0x%08x\n", lmg, ofs, ReadMacInt32(base + ofs*4)));
1046	+
1047	+	// Fake address only if this is not the ASC base
1048	+	if (lmg != 0xcc0)
1049	+	WriteMacInt32(base + ofs*4, ScratchMemBase);
1050	+	}
1051	+	}
1052	+	#else
1053	+	#error System specific handling for writable ROM is required here
1054	+	#endif
1055	+	#endif
1056	+
1057		// Make FPU optional
1058		if (FPUType == 0) {
1059		bp = ROMBaseHost + UniversalInfo + 22; // defaultRSRCs
#	Line 1192 \| Line 1236 \| static bool patch_rom_32(void)
1236		*wp = htons(M68K_RTS);
1237
1238		// Fake CPU speed test (SetupTimeK)
1239	+	// *** increased jl : MacsBug uses TimeDBRA for kbd repeat timing
1240		wp = (uint16 *)(ROMBaseHost + 0x800);
1241		*wp++ = htons(0x31fc); // move.w #xxx,TimeDBRA
1242	<	*wp++ = htons(100);
1242	>	*wp++ = htons(10000);
1243		*wp++ = htons(0x0d00);
1244		*wp++ = htons(0x31fc); // move.w #xxx,TimeSCCDBRA
1245	<	*wp++ = htons(100);
1245	>	*wp++ = htons(10000);
1246		*wp++ = htons(0x0d02);
1247		*wp++ = htons(0x31fc); // move.w #xxx,TimeSCSIDBRA
1248	<	*wp++ = htons(100);
1248	>	*wp++ = htons(10000);
1249		*wp++ = htons(0x0b24);
1250		*wp++ = htons(0x31fc); // move.w #xxx,TimeRAMDBRA
1251	<	*wp++ = htons(100);
1251	>	*wp++ = htons(10000);
1252		*wp++ = htons(0x0cea);
1253		*wp = htons(M68K_RTS);
1254
1255		#if REAL_ADDRESSING
1256		// Move system zone to start of Mac RAM
1257	<	lp = (uint32 *)(ROMBaseHost + 0x50a);
1258	<	*lp++ = htonl(RAMBaseMac);
1259	<	*lp = htonl(RAMBaseMac + 0x1800);
1257	>	wp = (uint16 *)(ROMBaseHost + 0x50a);
1258	>	*wp++ = htons(HiWord(RAMBaseMac + 0x2000));
1259	>	*wp++ = htons(LoWord(RAMBaseMac + 0x2000));
1260	>	*wp++ = htons(HiWord(RAMBaseMac + 0x3800));
1261	>	*wp = htons(LoWord(RAMBaseMac + 0x3800));
1262		#endif
1263
1264		#if !ROM_IS_WRITE_PROTECTED
1265	<	#if defined(AMIGA)
1265	>	#if defined(USE_SCRATCHMEM_SUBTERFUGE)
1266		// Set fake handle at 0x0000 to scratch memory area (so broken Mac programs won't write into Mac ROM)
1267	<	extern uint32 ScratchMem;
1267	>	extern uint8 *ScratchMem;
1268	>	const uint32 ScratchMemBase = Host2MacAddr(ScratchMem);
1269		wp = (uint16 *)(ROMBaseHost + 0xccaa);
1270		*wp++ = htons(0x203c); // move.l #ScratchMem,d0
1271	<	*wp++ = htons(ScratchMem >> 16);
1272	<	*wp = htons(ScratchMem);
1271	>	*wp++ = htons(ScratchMemBase >> 16);
1272	>	*wp = htons(ScratchMemBase);
1273		#else
1274		#error System specific handling for writable ROM is required here
1275		#endif
#	Line 1233 \| Line 1281 \| static bool patch_rom_32(void)
1281		*wp++ = htons(M68K_NOP);
1282		*wp = htons(M68K_NOP);
1283		#endif
1284	<
1284	>
1285	>	#if REAL_ADDRESSING && !defined(AMIGA)
1286	>	// gb-- Temporary hack to get rid of crashes in Speedometer
1287	>	wp = (uint16 *)(ROMBaseHost + 0xdba2);
1288	>	if (ntohs(*wp) == 0x662c) // bne.b #$2c
1289	>	*wp = htons(0x602c); // bra.b #$2c
1290	>	#endif
1291	>
1292		// Don't write to VIA in InitTimeMgr
1293		wp = (uint16 *)(ROMBaseHost + 0xb0e2);
1294		*wp++ = htons(0x4cdf); // movem.l (sp)+,d0-d5/a0-a4
#	Line 1429 \| Line 1484 \| static bool patch_rom_32(void)
1484		if (ROMSize > 0x80000) {
1485
1486		// BlockMove()
1487	<	static const uint8 ptest_dat[] = {0xa0, 0x8d, 0x0c, 0x81, 0x00, 0x00, 0x0c, 0x00, 0x6d, 0x06, 0x4e, 0x71, 0xf4, 0xf8};
1488	<	base = find_rom_data(0x87000, 0x87800, ptest_dat, sizeof(ptest_dat));
1489	<	D(bug("ptest %08lx\n", base));
1487	>	static const uint8 bmove_dat[] = {0x20, 0x5f, 0x22, 0x5f, 0x0c, 0x38, 0x00, 0x04, 0x01, 0x2f};
1488	>	base = find_rom_data(0x87000, 0x87800, bmove_dat, sizeof(bmove_dat));
1489	>	D(bug("block_move %08lx\n", base));
1490		if (base) { // ROM15/22/23/26/27/32
1491	<	wp = (uint16 *)(ROMBaseHost + base + 8);
1492	<	*wp = htons(M68K_NOP);
1491	>	wp = (uint16 *)(ROMBaseHost + base + 4);
1492	>	*wp++ = htons(M68K_EMUL_OP_BLOCK_MOVE);
1493	>	*wp++ = htons(0x7000);
1494	>	*wp = htons(M68K_RTS);
1495		}
1496
1497		// SANE
#	Line 1461 \| Line 1518 \| static bool patch_rom_32(void)
1518		}
1519
1520		// Patch .EDisk driver (don't scan for EDisks in the area ROMBase..0xe00000)
1521	<	uint32 edisk_offset = find_rom_resource('DRVR', 51);
1521	>	uint32 edisk_offset = find_rom_resource(FOURCC('D','R','V','R'), 51);
1522		if (edisk_offset) {
1523		static const uint8 edisk_dat[] = {0xd5, 0xfc, 0x00, 0x01, 0x00, 0x00, 0xb5, 0xfc, 0x00, 0xe0, 0x00, 0x00};
1524		base = find_rom_data(edisk_offset, edisk_offset + 0x10000, edisk_dat, sizeof(edisk_dat));
#	Line 1474 \| Line 1531 \| static bool patch_rom_32(void)
1531		}
1532
1533		// Replace .Sony driver
1534	<	sony_offset = find_rom_resource('DRVR', 4);
1534	>	sony_offset = find_rom_resource(FOURCC('D','R','V','R'), 4);
1535		D(bug("sony %08lx\n", sony_offset));
1536		memcpy(ROMBaseHost + sony_offset, sony_driver, sizeof(sony_driver));
1537
#	Line 1493 \| Line 1550 \| static bool patch_rom_32(void)
1550		memcpy(ROMBaseHost + sony_offset + 0xa00, CDROMIcon, sizeof(CDROMIcon));
1551
1552		// Install SERD patch and serial drivers
1553	<	serd_offset = find_rom_resource('SERD', 0);
1553	>	serd_offset = find_rom_resource(FOURCC('S','E','R','D'), 0);
1554		D(bug("serd %08lx\n", serd_offset));
1555		wp = (uint16 *)(ROMBaseHost + serd_offset + 12);
1556		*wp++ = htons(M68K_EMUL_OP_SERD);
#	Line 1526 \| Line 1583 \| static bool patch_rom_32(void)
1583		*wp++ = htons(M68K_RTS);
1584		microseconds_offset = (uint8 *)wp - ROMBaseHost;
1585		*wp++ = htons(M68K_EMUL_OP_MICROSECONDS);
1586	+	*wp++ = htons(M68K_RTS);
1587	+
1588	+	// Replace DebugUtil
1589	+	debugutil_offset = (uint8 *)wp - ROMBaseHost;
1590	+	*wp++ = htons(M68K_EMUL_OP_DEBUGUTIL);
1591		*wp = htons(M68K_RTS);
1592
1593		// Replace SCSIDispatch()
#	Line 1561 \| Line 1623 \| static bool patch_rom_32(void)
1623		*wp++ = htons(base >> 16);
1624		*wp = htons(base & 0xffff);
1625
1564	–	#if EMULATED_68K
1565	–	// Replace BlockMove()
1566	–	wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa02e)); // BlockMove()
1567	–	*wp++ = htons(M68K_EMUL_OP_BLOCK_MOVE);
1568	–	*wp++ = htons(0x7000);
1569	–	*wp = htons(M68K_RTS);
1570	–	#endif
1571	–
1626		// Look for double PACK 4 resources
1627	<	if ((base = find_rom_resource('PACK', 4)) == 0) return false;
1628	<	if ((base = find_rom_resource('PACK', 4, true)) == 0 && FPUType == 0)
1627	>	if ((base = find_rom_resource(FOURCC('P','A','C','K'), 4)) == 0) return false;
1628	>	if ((base = find_rom_resource(FOURCC('P','A','C','K'), 4, true)) == 0 && FPUType == 0)
1629		printf("WARNING: This ROM seems to require an FPU\n");
1630
1631		// Patch VIA interrupt handler

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Comparing BasiliskII/src/rom_patches.cpp (file contents): Revision 1.13 by cebix, 2000-04-10T18:52:26Z vs. Revision 1.20 by gbeauche, 2001-02-10T11:37:42Z

Diff Legend

Comparing BasiliskII/src/rom_patches.cpp (file contents):
Revision 1.13 by cebix, 2000-04-10T18:52:26Z vs.
Revision 1.20 by gbeauche, 2001-02-10T11:37:42Z