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(MESS) apple2: Support some oddball sized disk images and DOS 3.3 disks that were ripped in ProDOS sector order. [R. Belmont]

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This commit is contained in:
R. Belmont 2014-06-22 03:13:07 +00:00
parent 57665e5e1e
commit d2d865c800
1 changed files with 14 additions and 3 deletions
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17
src/lib/formats/ap2_dsk.c
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@ -561,7 +561,14 @@ int a2_16sect_format::identify(io_generic *io, UINT32 form_factor)
{
UINT64 size = io_generic_size(io);
UINT32 expected_size = 35 * 16 * 256;
return size == expected_size;
// check standard size plus some oddball sizes in our softlist
if ((size = (35*16*256)) || (size == 143403) || (size == 143363) || (size == 143358))
{
return 1;
}
return 0;
}
// following is placeholder, is completely wrong.
@ -603,6 +610,8 @@ bool a2_16sect_format::load(io_generic *io, UINT32 form_factor, floppy_image *im
UINT32 track_data[51090*2];
UINT8 sector_data[256*16];
int offset = 0;
static const unsigned char pascal_block1[4] = { 0x08, 0xa5, 0x0f, 0x29 };
static const unsigned char dos33_block1[4] = { 0xa2, 0x02, 0x8e, 0x52 };
io_generic_read(io, sector_data, fpos, 256*16);
@ -619,8 +628,6 @@ bool a2_16sect_format::load(io_generic *io, UINT32 form_factor, floppy_image *im
} // check Apple II Pascal
else if (!memcmp("SYSTEM.APPLE", &sector_data[0xd7], 12))
{
unsigned char pascal_block1[4] = { 0x08, 0xa5, 0x0f, 0x29 };
// Pascal discs can still be DOS order.
// Check for the second half of the boot code at 0x100
// (which means ProDOS order)
@ -628,6 +635,10 @@ bool a2_16sect_format::load(io_generic *io, UINT32 form_factor, floppy_image *im
{
m_prodos_order = true;
}
} // check for DOS 3.3 disks in ProDOS order
else if (!memcmp(dos33_block1, &sector_data[0x100], 4))
{
m_prodos_order = true;
}
}