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ti99: Fixed some rarely used TDF floppy format variants.

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This commit is contained in:
Michael Zapf 2021-03-21 16:29:56 +01:00
parent d578fa0744
commit cc790e4315
1 changed files with 23 additions and 17 deletions
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40
src/lib/formats/ti99_dsk.cpp
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@ -1276,52 +1276,58 @@ int ti99_tdf_format::identify(io_generic *io, uint32_t form_factor, const std::v
} }
/* /*
Find the proper format for a given image file. Find the proper format for a given image file. Tracks are counted per side.
Note that only two formats are actually compatible with the PC99 emulator.
*/ */
void ti99_tdf_format::determine_sizes(io_generic *io, int& cell_size, int& sector_count, int& heads, int& tracks) void ti99_tdf_format::determine_sizes(io_generic *io, int& cell_size, int& sector_count, int& heads, int& tracks)
{ {
uint64_t file_size = io_generic_size(io); uint64_t file_size = io_generic_size(io);
heads = 2; // TDF only supports two-sided recordings
tracks = 40;
// LOGMASKED(LOG_INFO, "[ti99_dsk] Image size = %ld\n", file_size); // doesn't compile // LOGMASKED(LOG_INFO, "[ti99_dsk] Image size = %ld\n", file_size); // doesn't compile
switch (file_size) switch (file_size)
{ {
case 260240: // used in PC99 case 260240: // used in PC99
cell_size = 4000;
sector_count = 9; sector_count = 9;
tracks = 40;
break; break;
case 491520: // 320K HX5102 case 491520: // 320K HX5102
cell_size = 2000;
sector_count = 16; sector_count = 16;
tracks = 40;
break; break;
case 549760: // used in PC99 case 549760: // used in PC99
cell_size = 2000;
sector_count = 18; sector_count = 18;
tracks = 40;
break; break;
case 1003520:
sector_count = 36;
tracks = 40;
break;
case 520480: case 520480:
cell_size = 4000;
sector_count = 9; sector_count = 9;
tracks = 80;
break; break;
case 983040: case 983040:
cell_size = 2000;
sector_count = 16; sector_count = 16;
tracks = 80; tracks = 80;
break; break;
case 1099520: case 1099520:
cell_size = 2000;
sector_count = 18; sector_count = 18;
tracks = 80; tracks = 80;
break; break;
case 2007040: case 2007040:
cell_size = 1000; sector_count = 36;
sector_count = 18;
tracks = 80; tracks = 80;
break; break;
default: default:
cell_size = 0; cell_size = 0;
sector_count = 0; sector_count = 0;
break; return;
} }
heads = 2; // TDF only supports two-sided recordings
cell_size = (sector_count <= 9)? 4000 : ((sector_count <= 18)? 2000 : 1000);
} }
/* /*
@ -1332,7 +1338,7 @@ void ti99_tdf_format::determine_sizes(io_generic *io, int& cell_size, int& secto
*/ */
void ti99_tdf_format::load_track(io_generic *io, uint8_t *sectordata, int *sector, int *secoffset, int head, int track, int sectorcount, int trackcount) void ti99_tdf_format::load_track(io_generic *io, uint8_t *sectordata, int *sector, int *secoffset, int head, int track, int sectorcount, int trackcount)
{ {
uint8_t fulltrack[6872]; // space for a full TDF track uint8_t fulltrack[12544]; // space for a full TDF track
// Read beginning of track 0. We need this to get the first gap, according // Read beginning of track 0. We need this to get the first gap, according
// to the format // to the format
@ -1427,7 +1433,7 @@ void ti99_tdf_format::load_track(io_generic *io, uint8_t *sectordata, int *secto
*/ */
void ti99_tdf_format::write_track(io_generic *io, uint8_t *sectordata, int *sector, int track, int head, int sector_count, int track_count) void ti99_tdf_format::write_track(io_generic *io, uint8_t *sectordata, int *sector, int track, int head, int sector_count, int track_count)
{ {
uint8_t trackdata[14000]; uint8_t trackdata[12544];
int offset = ((track_count * head) + track) * get_track_size(sector_count); int offset = ((track_count * head) + track) * get_track_size(sector_count);
int a1 = 0; int a1 = 0;