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

Comparing BasiliskII/src/rom_patches.cpp (file contents):
Revision 1.5 by cebix, 1999-10-19T17:41:18Z 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) 1997-1999 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 38 \| Line 38
38		#include "debug.h"
39
40
41	–	// Breakpoint
42	–	//#define M68K_BREAKPOINT 0x2310 // CritError
43	–	//#define M68K_BREAKPOINT 0x1d10 // BootMe
44	–
41		// Global variables
42	<	uint32 UniversalInfo; // ROM offset of UniversalInfo
43	<	uint32 PutScrapPatch; // Mac address of PutScrap() patch
44	<
45	<	static uint32 sony_offset; // ROM offset of .Sony driver
46	<	static uint32 serd_offset; // ROM offset of SERD resource (serial drivers)
47	<	static uint32 microseconds_offset; // ROM offset of Microseconds() replacement routine
48	<	static uint32 memory_dispatch_offset; // ROM offset of MemoryDispatch() replacement routine
42	>	uint32 UniversalInfo; // ROM offset of UniversalInfo
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
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 84 \| Line 90 \| static uint32 find_rom_resource(uint32 s
90
91		if (!cont)
92		rsrc_ptr = x;
93	+	else
94	+	rsrc_ptr = ReadMacInt32(ROMBaseMac + rsrc_ptr + 8);
95
96		for (;;) {
97		lp = ROMBaseMac + rsrc_ptr;
#	Line 142 \| Line 150 \| again:
150
151
152		/*
153	+	* Print ROM information to stream,
154	+	*/
155	+
156	+	static void list_rom_resources(void)
157	+	{
158	+	printf("ROM Resources:\n");
159	+	printf("Offset\t Type\tID\tSize\tName\n");
160	+	printf("------------------------------------------------\n");
161	+
162	+	uint32 lp = ROMBaseMac + ReadMacInt32(ROMBaseMac + 0x1a);
163	+	uint32 rsrc_ptr = ReadMacInt32(lp);
164	+
165	+	for (;;) {
166	+	lp = ROMBaseMac + rsrc_ptr;
167	+	uint32 data = ReadMacInt32(lp + 12);
168	+
169	+	char name[32];
170	+	int name_len = ReadMacInt8(lp + 23), i;
171	+	for (i=0; i<name_len; i++)
172	+	name[i] = ReadMacInt8(lp + 24 + i);
173	+	name[i] = 0;
174	+
175	+	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);
176	+
177	+	rsrc_ptr = ReadMacInt32(lp + 8);
178	+	if (!rsrc_ptr)
179	+	break;
180	+	}
181	+	printf("\n");
182	+	}
183	+
184	+	// Mapping of Model IDs to Model names
185	+	struct mac_desc {
186	+	char *name;
187	+	int32 id;
188	+	};
189	+
190	+	static mac_desc MacDesc[] = {
191	+	{"Classic" , 1},
192	+	{"Mac XL" , 2},
193	+	{"Mac 512KE" , 3},
194	+	{"Mac Plus" , 4},
195	+	{"Mac SE" , 5},
196	+	{"Mac II" , 6},
197	+	{"Mac IIx" , 7},
198	+	{"Mac IIcx" , 8},
199	+	{"Mac SE/030" , 9},
200	+	{"Mac Portable" , 10},
201	+	{"Mac IIci" , 11},
202	+	{"Mac IIfx" , 13},
203	+	{"Mac Classic" , 17},
204	+	{"Mac IIsi" , 18},
205	+	{"Mac LC" , 19},
206	+	{"Quadra 900" , 20},
207	+	{"PowerBook 170" , 21},
208	+	{"Quadra 700" , 22},
209	+	{"Classic II" , 23},
210	+	{"PowerBook 100" , 24},
211	+	{"PowerBook 140" , 25},
212	+	{"Quadra 950" , 26},
213	+	{"Mac LCIII/Performa 450", 27},
214	+	{"PowerBook Duo 210" , 29},
215	+	{"Centris 650" , 30},
216	+	{"PowerBook Duo 230" , 32},
217	+	{"PowerBook 180" , 33},
218	+	{"PowerBook 160" , 34},
219	+	{"Quadra 800" , 35},
220	+	{"Quadra 650" , 36},
221	+	{"Mac LCII" , 37},
222	+	{"PowerBook Duo 250" , 38},
223	+	{"Mac IIvi" , 44},
224	+	{"Mac IIvm/Performa 600", 45},
225	+	{"Mac IIvx" , 48},
226	+	{"Color Classic/Performa 250", 49},
227	+	{"PowerBook 165c" , 50},
228	+	{"Centris 610" , 52},
229	+	{"Quadra 610" , 53},
230	+	{"PowerBook 145" , 54},
231	+	{"Mac LC520" , 56},
232	+	{"Quadra/Centris 660AV" , 60},
233	+	{"Performa 46x" , 62},
234	+	{"PowerBook 180c" , 71},
235	+	{"PowerBook 520/520c/540/540c", 72},
236	+	{"PowerBook Duo 270c" , 77},
237	+	{"Quadra 840AV" , 78},
238	+	{"Performa 550" , 80},
239	+	{"PowerBook 165" , 84},
240	+	{"PowerBook 190" , 85},
241	+	{"Mac TV" , 88},
242	+	{"Mac LC475/Performa 47x", 89},
243	+	{"Mac LC575" , 92},
244	+	{"Quadra 605" , 94},
245	+	{"Quadra 630" , 98},
246	+	{"Mac LC580" , 99},
247	+	{"PowerBook Duo 280" , 102},
248	+	{"PowerBook Duo 280c" , 103},
249	+	{"PowerBook 150" , 115},
250	+	{"unknown", -1}
251	+	};
252	+
253	+	static void print_universal_info(uint32 info)
254	+	{
255	+	uint8 id = ReadMacInt8(info + 18);
256	+	uint16 hwcfg = ReadMacInt16(info + 16);
257	+	uint16 rom85 = ReadMacInt16(info + 20);
258	+
259	+	// Find model name
260	+	char *name = "unknown";
261	+	for (int i=0; MacDesc[i].id >= 0; i++)
262	+	if (MacDesc[i].id == id + 6) {
263	+	name = MacDesc[i].name;
264	+	break;
265	+	}
266	+
267	+	printf("%08x %02x\t%04x\t%04x\t%s\n", info - ROMBaseMac, id, hwcfg, rom85, name);
268	+	}
269	+
270	+	static void list_universal_infos(void)
271	+	{
272	+	uint32 ofs = 0x3000;
273	+	for (int i=0; i<0x2000; i+=2, ofs+=2)
274	+	if (ReadMacInt32(ROMBaseMac + ofs) == 0xdc000505) {
275	+	ofs -= 16;
276	+	uint32 q;
277	+	for (q=ofs; q > 0 && ReadMacInt32(ROMBaseMac + q) != ofs - q; q-=4) ;
278	+	if (q > 0) {
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))) {
283	+	print_universal_info(ROMBaseMac + ofs + q);
284	+	q += 4;
285	+	}
286	+	}
287	+	break;
288	+	}
289	+	printf("\n");
290	+	}
291	+
292	+	static void print_rom_info(void)
293	+	{
294	+	printf("\nROM Info:\n");
295	+	printf("Checksum : %08x\n", ReadMacInt32(ROMBaseMac));
296	+	printf("Version : %04x\n", ROMVersion);
297	+	printf("Sub Version : %04x\n", ReadMacInt16(ROMBaseMac + 18));
298	+	printf("Resource Map: %08x\n", ReadMacInt32(ROMBaseMac + 26));
299	+	printf("Trap Tables : %08x\n\n", ReadMacInt32(ROMBaseMac + 34));
300	+	if (ROMVersion == ROM_VERSION_32) {
301	+	list_rom_resources();
302	+	list_universal_infos();
303	+	}
304	+	}
305	+
306	+
307	+	/*
308		* Driver stubs
309		*/
310
#	Line 539 \| 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 547 \| 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 642 \| Line 810 \| void InstallSERD(void)
810
811		void PatchAfterStartup(void)
812		{
813	<	// Install MemoryDispatch() replacement routine
646	<	M68kRegisters r;
647	<	r.a[0] = ROMBaseMac + memory_dispatch_offset;
648	<	r.d[0] = 0xa05c;
649	<	Execute68kTrap(0xa247, &r); // SetOSTrapAddress()
650	<
813	>	#if SUPPORTS_EXTFS
814		// Install external file system
815		InstallExtFS();
816	+	#endif
817		}
818
819
#	Line 662 \| 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 (experimental)
833	>	// Virtual addressing mode works with 32-bit clean Mac II ROMs and Classic ROMs
834		return (ROMVersion == ROM_VERSION_CLASSIC) \|\| (ROMVersion == ROM_VERSION_32);
835		#endif
836		}
#	Line 780 \| 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 860 \| 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 1042 \| 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 1083 \| 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 1155 \| Line 1360 \| static bool patch_rom_32(void)
1360		*wp++ = htons(M68K_NOP);
1361		*wp = htons(M68K_NOP);
1362
1363	<	// Fix logical/physical RAM size (CompBootStack) (must be done after InitMemMgr!)
1364	<	static const uint8 fix_memsize_dat[] = {0x4e, 0x75};
1365	<	if ((base = find_rom_data(0x490, 0x4b0, fix_memsize_dat, sizeof(fix_memsize_dat))) == 0) return false;
1366	<	D(bug("fix_memsize %08lx\n", base));
1367	<	wp = (uint16 *)(ROMBaseHost + base);
1363	>	// Compute boot stack pointer and fix logical/physical RAM size (CompBootStack) (must be done after InitMemMgr!)
1364	>	wp = (uint16 *)(ROMBaseHost + 0x490);
1365	>	*wp++ = htons(0x2038); // move.l $10c,d0
1366	>	*wp++ = htons(0x010c);
1367	>	*wp++ = htons(0xd0b8); // add.l $2a6,d0
1368	>	*wp++ = htons(0x02a6);
1369	>	*wp++ = htons(0xe288); // lsr.l #1,d0
1370	>	*wp++ = htons(0x0880); // bclr #0,d0
1371	>	*wp++ = htons(0x0000);
1372	>	*wp++ = htons(0x0440); // subi.w #$400,d0
1373	>	*wp++ = htons(0x0400);
1374	>	*wp++ = htons(0x2040); // move.l d0,a0
1375		*wp++ = htons(M68K_EMUL_OP_FIX_MEMSIZE);
1376	<	*wp = htons(M68K_RTS);
1376	>	*wp++ = htons(M68K_RTS);
1377
1378		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};
1379		base = find_rom_data(0x4c000, 0x4c080, fix_memsize2_dat, sizeof(fix_memsize2_dat));
#	Line 1272 \| 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 1294 \| Line 1508 \| static bool patch_rom_32(void)
1508		}
1509		}
1510
1511	+	// Don't set MemoryDispatch() to unimplemented trap
1512	+	static const uint8 memdisp_dat[] = {0x30, 0x3c, 0xa8, 0x9f, 0xa7, 0x46, 0x30, 0x3c, 0xa0, 0x5c, 0xa2, 0x47};
1513	+	base = find_rom_data(0x4f100, 0x4f180, memdisp_dat, sizeof(memdisp_dat));
1514	+	D(bug("memdisp %08lx\n", base));
1515	+	if (base) { // ROM15/22/23/26/27/32
1516	+	wp = (uint16 *)(ROMBaseHost + base + 10);
1517	+	*wp = htons(M68K_NOP);
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 1308 \| 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 1327 \| 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 1360 \| 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 1395 \| Line 1623 \| static bool patch_rom_32(void)
1623		*wp++ = htons(base >> 16);
1624		*wp = htons(base & 0xffff);
1625
1626	<	// Install MemoryDispatch() replacement routine (activated in PatchAfterStartup())
1627	<	memory_dispatch_offset = sony_offset + 0xc20;
1628	<	wp = (uint16 *)(ROMBaseHost + memory_dispatch_offset);
1629	<	*wp++ = htons(M68K_EMUL_OP_MEMORY_DISPATCH);
1402	<	*wp = htons(M68K_RTS);
1626	>	// Look for double PACK 4 resources
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
1632		wp = (uint16 *)(ROMBaseHost + 0x9bc4); // Level 1 handler
#	Line 1418 \| Line 1645 \| static bool patch_rom_32(void)
1645
1646		bool PatchROM(void)
1647		{
1648	<	// Print ROM info
1649	<	D(bug("ROM Info:\n"));
1650	<	D(bug("Checksum: %08lx\n", ReadMacInt32(ROMBaseMac)));
1424	<	D(bug("Version: %04x\n", ROMVersion));
1425	<	D(bug("Sub Version: %04x\n", ReadMacInt16(ROMBaseMac + 18)));
1648	>	// Print some information about the ROM
1649	>	if (PrintROMInfo)
1650	>	print_rom_info();
1651
1652		// Patch ROM depending on version
1653		switch (ROMVersion) {
#	Line 1438 \| Line 1663 \| bool PatchROM(void)
1663		return false;
1664		}
1665
1441	–	#ifdef M68K_BREAKPOINT
1666		// Install breakpoint
1667	<	uint16 wp = (uint16 )(ROMBaseHost + M68K_BREAKPOINT);
1668	<	*wp = htons(M68K_EMUL_BREAK);
1669	<	#endif
1667	>	if (ROMBreakpoint) {
1668	>	uint16 wp = (uint16 )(ROMBaseHost + ROMBreakpoint);
1669	>	*wp = htons(M68K_EMUL_BREAK);
1670	>	}
1671
1672		// Clear caches as we loaded and patched code
1673		FlushCodeCache(ROMBaseHost, ROMSize);

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing BasiliskII/src/rom_patches.cpp (file contents): Revision 1.5 by cebix, 1999-10-19T17:41:18Z vs. Revision 1.20 by gbeauche, 2001-02-10T11:37:42Z

Diff Legend

Comparing BasiliskII/src/rom_patches.cpp (file contents):
Revision 1.5 by cebix, 1999-10-19T17:41:18Z vs.
Revision 1.20 by gbeauche, 2001-02-10T11:37:42Z