bool upd765_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
{
int type = find_size(io, form_factor);
if(type == -1)
return false;
// format shouldn't exceed image geometry
const format &f = formats[type];
int img_tracks, img_heads;
image->get_maximal_geometry(img_tracks, img_heads);
if (f.track_count > img_tracks || f.head_count > img_heads)
return false;
floppy_image_format_t::desc_e *desc;
int current_size;
int end_gap_index;
switch (f.encoding)
{
case floppy_image::FM:
desc = get_desc_fm(f, current_size, end_gap_index);
break;
case floppy_image::MFM:
default:
desc = get_desc_mfm(f, current_size, end_gap_index);
break;
}
int total_size = 200000000/f.cell_size;
int remaining_size = total_size - current_size;
if(remaining_size < 0)
throw emu_fatalerror("upd765_format: Incorrect track layout, max_size=%d, current_size=%d", total_size, current_size);
// Fixup the end gap
desc[end_gap_index].p2 = remaining_size / 16;
desc[end_gap_index + 1].p2 = remaining_size & 15;
desc[end_gap_index + 1].p1 >>= 16-(remaining_size & 15);
int track_size = compute_track_size(f);
uint8_t sectdata[40*512];
desc_s sectors[40];
for(int track=0; track < f.track_count; track++)
for(int head=0; head < f.head_count; head++) {
build_sector_description(f, sectdata, sectors, track, head);
io_generic_read(io, sectdata, (track*f.head_count + head)*track_size, track_size);
generate_track(desc, track, head, sectors, f.sector_count, total_size, image);
}
image->set_variant(f.variant);
return true;
}
bool wd177x_format::load(io_generic *io, UINT32 form_factor, floppy_image *image)
{
int type = find_size(io, form_factor);
if(type == -1)
return false;
const format &f = formats[type];
floppy_image_format_t::desc_e *desc;
int current_size;
int end_gap_index;
switch (f.encoding)
{
case floppy_image::FM:
desc = get_desc_fm(f, current_size, end_gap_index);
break;
case floppy_image::MFM:
default:
desc = get_desc_mfm(f, current_size, end_gap_index);
break;
}
int total_size = 200000000/f.cell_size;
int remaining_size = total_size - current_size;
if(remaining_size < 0)
throw emu_fatalerror("wd177x_format: Incorrect track layout, max_size=%d, current_size=%d", total_size, current_size);
// Fixup the end gap
desc[end_gap_index].p2 = remaining_size / 16;
desc[end_gap_index + 1].p2 = remaining_size & 15;
desc[end_gap_index + 1].p1 >>= 16-(remaining_size & 15);
int track_size = compute_track_size(f);
UINT8 sectdata[40*512];
desc_s sectors[40];
build_sector_description(f, sectdata, sectors);
for(int track=0; track < f.track_count; track++)
for(int head=0; head < f.head_count; head++) {
if (f.encoding == floppy_image::FM)
desc[14].p1 = get_track_dam_fm(f, head, track);
else
desc[16].p1 = get_track_dam_mfm(f, head, track);
io_generic_read(io, sectdata, get_image_offset(f, head, track), track_size);
generate_track(desc, track, head, sectors, f.sector_count, total_size, image);
}
image->set_variant(f.variant);
return true;
}