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root/cebix/BasiliskII/src/rom_patches.cpp
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Comparing BasiliskII/src/rom_patches.cpp (file contents):
Revision 1.11 by cebix, 1999-10-27T16:59:38Z vs.
Revision 1.13 by cebix, 2000-04-10T18:52:26Z

# 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 47 | Line 47 | bool PrintROMInfo = false;     // Flag: prin
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
50  
51   // Prototypes
52   uint16 ROMVersion;
# Line 82 | Line 81 | static uint32 find_rom_resource(uint32 s
81  
82          if (!cont)
83                  rsrc_ptr = x;
84 +        else
85 +                rsrc_ptr = ReadMacInt32(ROMBaseMac + rsrc_ptr + 8);
86  
87          for (;;) {
88                  lp = ROMBaseMac + rsrc_ptr;
# Line 700 | Line 701 | void InstallDrivers(uint32 pb)
701          r.d[0] = 0xa093;
702          Execute68kTrap(0xa247, &r);             // SetOSTrapAddress()
703  
703 –        // Install MemoryDispatch() replacement routine
704 –        r.a[0] = ROMBaseMac + memory_dispatch_offset;
705 –        r.d[0] = 0xa05c;
706 –        Execute68kTrap(0xa247, &r);             // SetOSTrapAddress()
707 –
704          // Install disk driver
705          r.a[0] = ROMBaseMac + sony_offset + 0x100;
706          r.d[0] = (uint32)DiskRefNum;
# Line 1459 | Line 1455 | static bool patch_rom_32(void)
1455          static const uint8 memdisp_dat[] = {0x30, 0x3c, 0xa8, 0x9f, 0xa7, 0x46, 0x30, 0x3c, 0xa0, 0x5c, 0xa2, 0x47};
1456          base = find_rom_data(0x4f100, 0x4f180, memdisp_dat, sizeof(memdisp_dat));
1457          D(bug("memdisp %08lx\n", base));
1458 <        if (base) {     // ROM15/32
1458 >        if (base) {     // ROM15/22/23/26/27/32
1459                  wp = (uint16 *)(ROMBaseHost + base + 10);
1460                  *wp = htons(M68K_NOP);
1461          }
# Line 1565 | Line 1561 | static bool patch_rom_32(void)
1561          *wp++ = htons(base >> 16);
1562          *wp = htons(base & 0xffff);
1563  
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 –
1564   #if EMULATED_68K
1565          // Replace BlockMove()
1566          wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa02e));   // BlockMove()
# Line 1579 | Line 1569 | static bool patch_rom_32(void)
1569          *wp = htons(M68K_RTS);
1570   #endif
1571  
1572 +        // Look for double PACK 4 resources
1573 +        if ((base = find_rom_resource('PACK', 4)) == 0) return false;
1574 +        if ((base = find_rom_resource('PACK', 4, true)) == 0 && FPUType == 0)
1575 +                printf("WARNING: This ROM seems to require an FPU\n");
1576 +
1577          // Patch VIA interrupt handler
1578          wp = (uint16 *)(ROMBaseHost + 0x9bc4);  // Level 1 handler
1579          *wp++ = htons(0x7002);          // moveq        #2,d0 (always 60Hz interrupt)

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