diff options
Diffstat (limited to 'src/lib/formats/bbc_dsk.cpp')
-rw-r--r-- | src/lib/formats/bbc_dsk.cpp | 411 |
1 files changed, 0 insertions, 411 deletions
diff --git a/src/lib/formats/bbc_dsk.cpp b/src/lib/formats/bbc_dsk.cpp deleted file mode 100644 index 9b05f14f0be..00000000000 --- a/src/lib/formats/bbc_dsk.cpp +++ /dev/null @@ -1,411 +0,0 @@ -// license:GPL-2.0+ -// copyright-holders:Dirk Best, Nigel Barnes -/*************************************************************************** - - BBC Micro - - Disk image formats - -***************************************************************************/ - -#include "bbc_dsk.h" - -bbc_dfs_format::bbc_dfs_format() : wd177x_format(formats) -{ -} - -const char *bbc_dfs_format::name() const -{ - return "dfs"; -} - -const char *bbc_dfs_format::description() const -{ - return "Acorn DFS disk image"; -} - -const char *bbc_dfs_format::extensions() const -{ - return "bbc,img,ssd,dsd"; -} - -int bbc_dfs_format::find_size(io_generic *io, UINT32 form_factor) -{ - UINT8 cat[8]; - UINT32 sectors0, sectors2; - - // read sector count from side 0 catalogue - io_generic_read(io, cat, 0x100, 8); - sectors0 = ((cat[6] & 3) << 8) + cat[7]; - - UINT64 size = io_generic_size(io); - for(int i=0; formats[i].form_factor; i++) { - const format &f = formats[i]; - if(form_factor != floppy_image::FF_UNKNOWN && form_factor != f.form_factor) - continue; - - if ((size <= (UINT64)compute_track_size(f) * f.track_count * f.head_count) && (sectors0 == f.track_count * f.sector_count)) { - if (f.head_count == 2) - { - // read sector count from side 2 catalogue - if (f.sector_base_id == -1) - io_generic_read(io, cat, 0xb00, 8); // interleaved - else - io_generic_read(io, cat, compute_track_size(f) * f.track_count + 0x100, 8); // sequential - sectors2 = ((cat[6] & 3) << 8) + cat[7]; - } - else - { - sectors2 = sectors0; - } - - if (sectors0 == sectors2) - return i; - } - } - return -1; -} - -int bbc_dfs_format::identify(io_generic *io, UINT32 form_factor) -{ - int type = find_size(io, form_factor); - - if(type != -1) - return 90; - return 0; -} - -int bbc_dfs_format::get_image_offset(const format &f, int head, int track) -{ - if (f.sector_base_id == -1) - return (track * f.head_count + head) * compute_track_size(f); - else - return (f.track_count * head + track) * compute_track_size(f); -} - -const bbc_dfs_format::format bbc_dfs_format::formats[] = -{ - { // 100k 40 track single sided single density - floppy_image::FF_525, floppy_image::SSSD, floppy_image::FM, - 4000, 10, 40, 1, 256, {}, 0, {}, 40, 10, 10 - }, - { // 200k 80 track single sided single density - floppy_image::FF_525, floppy_image::SSQD, floppy_image::FM, - 4000, 10, 80, 1, 256, {}, 0, {}, 40, 10, 10 - }, - { // 200k 40 track double sided single density - floppy_image::FF_525, floppy_image::DSSD, floppy_image::FM, - 4000, 10, 40, 2, 256, {}, 0, {}, 40, 10, 10 - }, - { // 200k 40 track double sided single density (interleaved) - floppy_image::FF_525, floppy_image::DSSD, floppy_image::FM, - 4000, 10, 40, 2, 256, {}, -1, { 0,1,2,3,4,5,6,7,8,9 }, 40, 10, 10 - }, - { // 400k 80 track double sided single density - floppy_image::FF_525, floppy_image::DSQD, floppy_image::FM, - 4000, 10, 80, 2, 256, {}, 0, {}, 40, 10, 10 - }, - { // 400k 80 track double sided single density (interleaved) - floppy_image::FF_525, floppy_image::DSQD, floppy_image::FM, - 4000, 10, 80, 2, 256, {}, -1, { 0,1,2,3,4,5,6,7,8,9 }, 40, 10, 10 - }, - {} -}; - - -bbc_adfs_format::bbc_adfs_format() : wd177x_format(formats) -{ -} - -const char *bbc_adfs_format::name() const -{ - return "adfs"; -} - -const char *bbc_adfs_format::description() const -{ - return "Acorn ADFS disk image"; -} - -const char *bbc_adfs_format::extensions() const -{ - return "adf,ads,adm,adl"; -} - -int bbc_adfs_format::find_size(io_generic *io, UINT32 form_factor) -{ - UINT8 map[3]; - UINT32 sectors; - - // read sector count from free space map - io_generic_read(io, map, 0xfc, 3); - sectors = map[0] + (map[1] << 8) + (map[2] << 16); - - UINT64 size = io_generic_size(io); - for(int i=0; formats[i].form_factor; i++) { - const format &f = formats[i]; - if(form_factor != floppy_image::FF_UNKNOWN && form_factor != f.form_factor) - continue; - - // valid images will have sector counts adfs-s = 0x280; adfs-m = 0x500; adfs-l = 0xa00; though many adfs-s images are incorrect - // format d/e (size 819200) we accept on the size only - if ((size == (UINT64)compute_track_size(f) * f.track_count * f.head_count) && (sectors == 0x280 || sectors == 0x500 || sectors == 0xa00 || size == 819200)) { - return i; - } - } - return -1; -} - -int bbc_adfs_format::identify(io_generic *io, UINT32 form_factor) -{ - int type = find_size(io, form_factor); - - if(type != -1) - return 100; - return 0; -} - -int bbc_adfs_format::get_image_offset(const format &f, int head, int track) -{ - if (f.sector_base_id == -1) - return (track * f.head_count + head) * compute_track_size(f); - else - return (f.track_count * head + track) * compute_track_size(f); -} - -const bbc_adfs_format::format bbc_adfs_format::formats[] = -{ - { // 160K 5 1/4 inch 40 track single sided double density - floppy_image::FF_525, floppy_image::SSDD, floppy_image::MFM, - 2000, 16, 40, 1, 256, {}, 0, {}, 60, 22, 43 - }, - { // 320K 5 1/4 inch 80 track single sided double density - floppy_image::FF_525, floppy_image::SSDD, floppy_image::MFM, - 2000, 16, 80, 1, 256, {}, 0, {}, 60, 22, 43 - }, - { // 640K 5 1/4 inch 80 track double sided double density (interleaved) - floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, - 2000, 16, 80, 2, 256, {}, -1, { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }, 60, 22, 43 - }, - { // 160K 3 1/2 inch 40 track single sided double density - floppy_image::FF_35, floppy_image::SSDD, floppy_image::MFM, - 2000, 16, 40, 1, 256, {}, 0, {}, 60, 22, 43 - }, - { // 320K 3 1/2 inch 80 track single sided double density - floppy_image::FF_35, floppy_image::SSQD, floppy_image::MFM, - 2000, 16, 80, 1, 256, {}, 0, {}, 60, 22, 43 - }, - { // 640K 3 1/2 inch 80 track double sided double density (interleaved) - floppy_image::FF_35, floppy_image::DSQD, floppy_image::MFM, - 2000, 16, 80, 2, 256, {}, -1, { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }, 60, 22, 43 - }, - { // 800K 3 1/2 inch 80 track double sided double density - floppy_image::FF_35, floppy_image::DSQD, floppy_image::MFM, - 2000, 5, 80, 2, 1024, {}, -1, { 0,1,2,3,4 }, 60, 22, 43 - }, - {} -}; - - -bbc_dos_format::bbc_dos_format() : wd177x_format(formats) -{ -} - -const char *bbc_dos_format::name() const -{ - return "dos"; -} - -const char *bbc_dos_format::description() const -{ - return "Acorn DOS disk image"; -} - -const char *bbc_dos_format::extensions() const -{ - return "img,adl"; -} - -int bbc_dos_format::find_size(io_generic *io, UINT32 form_factor) -{ - UINT8 cat[3]; - UINT32 sectors; - - UINT64 size = io_generic_size(io); - for(int i=0; formats[i].form_factor; i++) { - const format &f = formats[i]; - if(form_factor != floppy_image::FF_UNKNOWN && form_factor != f.form_factor) - continue; - - if (size == (UINT64)compute_track_size(f) * f.track_count * f.head_count) { - switch (size) - { - case 640 * 1024: // 640K Acorn (Bootable) DOS Format - // read sector count from free space map - Acorn DOS = 0xaa0 - io_generic_read(io, cat, 0xfc, 3); - sectors = cat[0] + (cat[1] << 8) + (cat[2] << 16); - if (sectors == 0xaa0) { - // read media type ID from FAT - Acorn DOS = 0xff - if (f.sector_base_id == -1) - io_generic_read(io, cat, 0x2000, 1); // interleaved - else - io_generic_read(io, cat, 0x1000, 1); // sequential - if (cat[0] == 0xff) return i; - } - break; - case 800 * 1024: // 800K Acorn DOS Format - // read media type ID from FAT - Acorn DOS = 0xfd - io_generic_read(io, cat, 0, 1); - if (cat[0] == 0xfd) return i; - break; - } - } - } - return -1; -} - -int bbc_dos_format::identify(io_generic *io, UINT32 form_factor) -{ - int type = find_size(io, form_factor); - - if(type != -1) - return 100; - return 0; -} - -int bbc_dos_format::get_image_offset(const format &f, int head, int track) -{ - if (f.sector_base_id == -1) - return (track * f.head_count + head) * compute_track_size(f); - else - return (f.track_count * head + track) * compute_track_size(f); -} - -const bbc_dos_format::format bbc_dos_format::formats[] = -{ - { // 640K 5 1/4 inch 80 track double sided double density - gaps unverified - floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, - 2000, 16, 80, 2, 256, {}, 0, {}, 60, 22, 43 - }, - { // 640K 5 1/4 inch 80 track double sided double density (interleaved) - gaps unverified - floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, - 2000, 16, 80, 2, 256, {}, -1, { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }, 60, 22, 43 - }, - { // 800K 5 1/4 inch 80 track double sided double density - gaps unverified - floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, - 2000, 5, 80, 2, 1024, {}, 0, {}, 60, 22, 43 - }, - {} -}; - - -bbc_cpm_format::bbc_cpm_format() : wd177x_format(formats) -{ -} - -const char *bbc_cpm_format::name() const -{ - return "cpm"; -} - -const char *bbc_cpm_format::description() const -{ - return "Acorn CP/M disk image"; -} - -const char *bbc_cpm_format::extensions() const -{ - return "img,ssd,dsd"; -} - -int bbc_cpm_format::identify(io_generic *io, UINT32 form_factor) -{ - UINT8 h[8]; - - io_generic_read(io, h, 0, 8); - - int type = find_size(io, form_factor); - - if(type != -1 && (memcmp(h, "Acorn CP", 8) == 0 || memcmp(h, "Slogger ", 8) == 0)) { - return 100; - } - return 0; -} - -int bbc_cpm_format::get_image_offset(const format &f, int head, int track) -{ - if (f.sector_base_id == -1) - return (track * f.head_count + head) * compute_track_size(f); - else - return (f.track_count * head + track) * compute_track_size(f); -} - -const bbc_cpm_format::format bbc_cpm_format::formats[] = -{ - { // 400K 5 1/4 inch 80 track double sided single density - gaps unverified - floppy_image::FF_525, floppy_image::DSQD, floppy_image::FM, - 4000, 5, 80, 2, 512, {}, 0, {}, 40, 10, 10 - }, - { // 400k 5 1/4 inch 80 track double sided single density (interleaved) - gaps unverified - floppy_image::FF_525, floppy_image::DSQD, floppy_image::FM, - 4000, 5, 80, 2, 512, {}, -1, { 0,1,2,3,4 }, 40, 10, 10 - }, - { // 800K 5 1/4 inch 80 track double sided double density - gaps unverified - floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, - 2000, 10, 80, 2, 512, {}, 0, {}, 60, 22, 43 - }, - {} -}; - - -bbc_cpn_format::bbc_cpn_format() : wd177x_format(formats) -{ -} - -const char *bbc_cpn_format::name() const -{ - return "cpn"; -} - -const char *bbc_cpn_format::description() const -{ - return "Torch CPN disk image"; -} - -const char *bbc_cpn_format::extensions() const -{ - return "dsd"; -} - -int bbc_cpn_format::identify(io_generic *io, UINT32 form_factor) -{ - int type = find_size(io, form_factor); - - if(type != -1) - return 50; - return 0; -} - -int bbc_cpn_format::get_image_offset(const format &f, int head, int track) -{ - if (f.sector_base_id == -1) - return (track * f.head_count + head) * compute_track_size(f); - else - return (f.track_count * head + track) * compute_track_size(f); -} - -const bbc_cpn_format::format bbc_cpn_format::formats[] = -{ - { // 400k 80 track double sided single density (interleaved) - gaps unverified - floppy_image::FF_525, floppy_image::DSQD, floppy_image::FM, - 4000, 10, 80, 2, 256, {}, -1, { 0,1,2,3,4,5,6,7,8,9 }, 40, 10, 10 - }, - {} -}; - - -const floppy_format_type FLOPPY_BBC_DFS_FORMAT = &floppy_image_format_creator<bbc_dfs_format>; -const floppy_format_type FLOPPY_BBC_ADFS_FORMAT = &floppy_image_format_creator<bbc_adfs_format>; -const floppy_format_type FLOPPY_BBC_DOS_FORMAT = &floppy_image_format_creator<bbc_dos_format>; -const floppy_format_type FLOPPY_BBC_CPM_FORMAT = &floppy_image_format_creator<bbc_cpm_format>; -const floppy_format_type FLOPPY_BBC_CPN_FORMAT = &floppy_image_format_creator<bbc_cpn_format>; |