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Merge pull request #6245 from shattered/_27394e2f097

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aim_dsk: use splice position recorded in the image, if available (nw)
This commit is contained in:
R. Belmont 2020-02-05 13:42:04 -05:00 committed by GitHub
commit 3f972f86c7
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 29 additions and 5 deletions
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34
src/lib/formats/aim_dsk.cpp
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@ -66,23 +66,41 @@ bool aim_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
std::vector<uint8_t> track_data(track_size);
std::vector<uint32_t> raw_track_data;
int data_count = 0;
int splice_pos = -1;
bool header = false;
// Read track
io_generic_read(io, &track_data[0], ( heads * track + head ) * track_size, track_size);
// Find first sector header or index mark
for (int offset = 0; offset < track_size; offset += 2)
{
switch (track_data[offset + 1] & 1)
if (track_data[offset + 1] == 1 && splice_pos < 0)
{
case 0:
splice_pos = offset - (20 * 2);
}
if (track_data[offset + 1] == 3)
{
splice_pos = offset;
}
}
if (splice_pos < 0)
{
splice_pos = 0;
}
for (int offset = splice_pos; offset < track_size + splice_pos; offset += 2)
{
switch (track_data[(offset + 1) % track_size])
{
case 0: // regular data
if (data_count == 0)
header = (track_data[offset] == 0x95) ? true : false;
header = (track_data[offset % track_size] == 0x95) ? true : false;
data_count++;
mfm_w(raw_track_data, 8, track_data[offset]);
mfm_w(raw_track_data, 8, track_data[offset % track_size]);
break;
case 1:
case 1: // sync mark
if (header && data_count < 11) // XXX hack
{
for (; data_count < 12; data_count++)
@ -93,6 +111,12 @@ bool aim_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
raw_w(raw_track_data, 16, 0x8924);
raw_w(raw_track_data, 16, 0x5555);
data_count = 0;
// TELETEXT.AIM and others
case 0xff:
break;
default:
break;
}
}