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More accurate Gestalt 'cput' values (G4, 750FX)

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This commit is contained in:
gbeauche 2004-07-03 17:48:44 +00:00
parent 0669b02e5f
commit 9545f93d3d
1 changed files with 8 additions and 2 deletions
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10
SheepShaver/src/rom_patches.cpp
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@ -1751,7 +1751,7 @@ static bool patch_68k(void)
*wp++ = htons(M68K_NOP);
*wp = htons(M68K_NOP);
// Gestalt PowerPC page size, RAM size (InitGestalt, via 0x25c)
// Gestalt PowerPC page size, CPU type, RAM size (InitGestalt, via 0x25c)
static const uint8 page_size2_dat[] = {0x26, 0x79, 0x5f, 0xff, 0xef, 0xd8, 0x25, 0x6b, 0x00, 0x10, 0x00, 0x1e};
if ((base = find_rom_data(0x50000, 0x70000, page_size2_dat, sizeof(page_size2_dat))) == 0) return false;
D(bug("page_size2 %08lx\n", base));
@ -1761,7 +1761,13 @@ static bool patch_68k(void)
*wp++ = htons(0x1000);
*wp++ = htons(0x001e);
*wp++ = htons(0x157c); // move.b #PVR,$1d(a2)
*wp++ = htons(((PVR & 0x80000000) ? 0x10 : 0) | ((PVR >> 16) & 0xff));
uint32 cput = (PVR >> 16);
if (cput == 0x7000)
cput |= 0x20;
else if (cput >= 0x8000 && cput <= 0x8002)
cput |= 0x10;
cput &= 0xff;
*wp++ = htons(cput);
*wp++ = htons(0x001d);
*wp++ = htons(0x263c); // move.l #RAMSize,d3
*wp++ = htons(RAMSize >> 16);