diff options
author | 2016-07-16 19:36:38 +0100 | |
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committer | 2016-07-16 19:48:44 +0100 | |
commit | 9104c9d52336a879ad4dc519af003833acb63eca (patch) | |
tree | 88b088354c604709b96e523e78298bfaaeb89ce9 /src/lib/formats/acorn_dsk.cpp | |
parent | de7c161add619be9e258ddb18fe9bd100be5b474 (diff) |
renamed bbc_dsk to acorn_dsk
- split ssd/dsd formats
- added opus ddos format
- split adfs into oldmap and newmap formats for archimedes
- logging
Diffstat (limited to 'src/lib/formats/acorn_dsk.cpp')
-rw-r--r-- | src/lib/formats/acorn_dsk.cpp | 665 |
1 files changed, 665 insertions, 0 deletions
diff --git a/src/lib/formats/acorn_dsk.cpp b/src/lib/formats/acorn_dsk.cpp new file mode 100644 index 00000000000..5321cc00ea9 --- /dev/null +++ b/src/lib/formats/acorn_dsk.cpp @@ -0,0 +1,665 @@ +// license:GPL-2.0+ +// copyright-holders:Dirk Best, Nigel Barnes +/*************************************************************************** + + Acorn - BBC Micro, Electron, Archimedes + + Disk image formats + +***************************************************************************/ + +#include "acorn_dsk.h" + +acorn_ssd_format::acorn_ssd_format() : wd177x_format(formats) +{ +} + +const char *acorn_ssd_format::name() const +{ + return "ssd"; +} + +const char *acorn_ssd_format::description() const +{ + return "Acorn SSD disk image"; +} + +const char *acorn_ssd_format::extensions() const +{ + return "ssd,bbc,img"; +} + +int acorn_ssd_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]; + LOG_FORMATS("ssd: sector count 0: %d %s\n", sectors0, sectors0 % 10 != 0 ? "invalid" : ""); + + 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 + io_generic_read(io, cat, compute_track_size(f) * f.track_count + 0x100, 8); // sequential + sectors2 = ((cat[6] & 3) << 8) + cat[7]; + LOG_FORMATS("ssd: sector count 2: %d %s\n", sectors2, sectors2 % 10 != 0 ? "invalid" : ""); + } + else + { + sectors2 = sectors0; + } + + if (sectors0 % 10 == 0 && sectors2 % 10 == 0) + return i; + } + } + LOG_FORMATS("ssd: no match\n"); + return -1; +} + +int acorn_ssd_format::identify(io_generic *io, UINT32 form_factor) +{ + int type = find_size(io, form_factor); + + if(type != -1) + return 90; + return 0; +} + +int acorn_ssd_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 acorn_ssd_format::format acorn_ssd_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 + }, + { // 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 + }, + {} +}; + + +acorn_dsd_format::acorn_dsd_format() : wd177x_format(formats) +{ +} + +const char *acorn_dsd_format::name() const +{ + return "dsd"; +} + +const char *acorn_dsd_format::description() const +{ + return "Acorn DSD disk image"; +} + +const char *acorn_dsd_format::extensions() const +{ + return "dsd"; +} + +int acorn_dsd_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]; + LOG_FORMATS("dsd: sector count 0: %d %s\n", sectors0, sectors0 % 10 != 0 ? "invalid" : ""); + + 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)) { + // read sector count from side 2 catalogue + io_generic_read(io, cat, 0xb00, 8); // interleaved + sectors2 = ((cat[6] & 3) << 8) + cat[7]; + LOG_FORMATS("dsd: sector count 2: %d %s\n", sectors2, sectors2 % 10 != 0 ? "invalid" : ""); + + if (sectors0 % 10 == 0 && sectors2 % 10 == 0) + return i; + } + } + LOG_FORMATS("dsd: no match\n"); + return -1; +} + +int acorn_dsd_format::identify(io_generic *io, UINT32 form_factor) +{ + int type = find_size(io, form_factor); + + if (type != -1) + return 90; + return 0; +} + +int acorn_dsd_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 acorn_dsd_format::format acorn_dsd_format::formats[] = +{ + { // 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 + }, + { // 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 + }, + {} +}; + + +opus_ddos_format::opus_ddos_format() : wd177x_format(formats) +{ +} + +const char *opus_ddos_format::name() const +{ + return "ddos"; +} + +const char *opus_ddos_format::description() const +{ + return "Opus DDOS disk image"; +} + +const char *opus_ddos_format::extensions() const +{ + return "dds"; +} + +int opus_ddos_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, 0x1000, 8); + sectors0 = (cat[1] << 8) + cat[2]; + LOG_FORMATS("ddos: sector count 0: %d %s\n", sectors0, sectors0 % 18 != 0 ? "invalid" : ""); + + 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 + io_generic_read(io, cat, compute_track_size(f) * f.track_count + 0x1000, 8); // sequential + sectors2 = (cat[1] << 8) + cat[2]; + LOG_FORMATS("ddos: sector count 2: %d %s\n", sectors2, sectors2 % 18 != 0 ? "invalid" : ""); + } + else + { + sectors2 = sectors0; + } + + if (sectors0 % 18 == 0 && sectors2 % 18 == 0) + return i; + } + } + LOG_FORMATS("ddos: no match\n"); + return -1; +} + +int opus_ddos_format::identify(io_generic *io, UINT32 form_factor) +{ + int type = find_size(io, form_factor); + + if (type != -1) + return 90; + return 0; +} + +int opus_ddos_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 opus_ddos_format::format opus_ddos_format::formats[] = +{ + { // 180k 40 track single sided double density - gaps unverified + floppy_image::FF_525, floppy_image::SSSD, floppy_image::MFM, + 4000, 18, 40, 1, 256, {}, 0, {}, 40, 10, 10 + }, + { // 360k 80 track single sided double density - gaps unverified + floppy_image::FF_525, floppy_image::SSDD, floppy_image::MFM, + 4000, 18, 80, 1, 256, {}, 0, {}, 40, 10, 10 + }, + { // 360k 40 track double sided double density - gaps unverified + floppy_image::FF_525, floppy_image::DSSD, floppy_image::MFM, + 4000, 18, 40, 2, 256, {}, 0, {}, 40, 10, 10 + }, + { // 720k 80 track double sided double density - gaps unverified + floppy_image::FF_525, floppy_image::DSDD, floppy_image::MFM, + 4000, 18, 80, 2, 256, {}, 0, {}, 40, 10, 10 + }, + {} +}; + + +acorn_adfs_old_format::acorn_adfs_old_format() : wd177x_format(formats) +{ +} + +const char *acorn_adfs_old_format::name() const +{ + return "adfs_o"; +} + +const char *acorn_adfs_old_format::description() const +{ + return "Acorn ADFS (OldMap) disk image"; +} + +const char *acorn_adfs_old_format::extensions() const +{ + return "adf,ads,adm,adl"; +} + +int acorn_adfs_old_format::find_size(io_generic *io, UINT32 form_factor) +{ + UINT8 map[3]; + UINT32 sectors; + UINT8 oldmap[4]; + + // read sector count from free space map + io_generic_read(io, map, 0xfc, 3); + sectors = map[0] + (map[1] << 8) + (map[2] << 16); + LOG_FORMATS("adfs_o: sector count %d %s\n", sectors, sectors % 16 != 0 ? "invalid" : ""); + + // read map identifier + io_generic_read(io, oldmap, 0x201, 4); + LOG_FORMATS("adfs_o: map identifier %s %s\n", oldmap, memcmp(oldmap, "Hugo", 4) != 0 ? "invalid" : ""); + + 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 map identifier 'Hugo' and sector counts adfs-s = 0x280; adfs-m = 0x500; adfs-l = 0xa00; though many adfs-s images are incorrect + if ((size <= (UINT64)compute_track_size(f) * f.track_count * f.head_count) && memcmp(oldmap, "Hugo", 4) == 0 && (sectors == 0x280 || sectors == 0x500 || sectors == 0xa00 || size == 819200)) { + return i; + } + } + LOG_FORMATS("adfs_o: no match\n"); + return -1; +} + +int acorn_adfs_old_format::identify(io_generic *io, UINT32 form_factor) +{ + int type = find_size(io, form_factor); + + if(type != -1) + return 100; + return 0; +} + +int acorn_adfs_old_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 acorn_adfs_old_format::format acorn_adfs_old_format::formats[] = +{ + { // M - 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 + }, + { // S - 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 + }, + { // L - 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 + }, + { // M - 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 + }, + { // S - 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 + }, + { // L - 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 + }, + {} +}; + + +acorn_adfs_new_format::acorn_adfs_new_format() : wd177x_format(formats) +{ +} + +const char *acorn_adfs_new_format::name() const +{ + return "adfs_n"; +} + +const char *acorn_adfs_new_format::description() const +{ + return "Acorn ADFS (NewMap) disk image"; +} + +const char *acorn_adfs_new_format::extensions() const +{ + return "adf"; +} + +int acorn_adfs_new_format::find_size(io_generic *io, UINT32 form_factor) +{ + UINT8 dform[4]; + UINT8 eform[4]; + + // read map identifiers for D and E formats + io_generic_read(io, dform, 0x401, 4); + LOG_FORMATS("adfs_n: map identifier (D format) %s %s\n", dform, memcmp(dform, "Nick", 4) != 0 ? "invalid" : ""); + io_generic_read(io, eform, 0x801, 4); + LOG_FORMATS("adfs_n: map identifier (E format) %s %s\n", eform, memcmp(eform, "Nick", 4) != 0 ? "invalid" : ""); + + 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 map identifier Nick + if ((size == (UINT64)compute_track_size(f) * f.track_count * f.head_count) && (memcmp(dform, "Nick", 4) == 0 || memcmp(eform, "Nick", 4) == 0)) { + return i; + } + } + LOG_FORMATS("adfs_n: no match\n"); + return -1; +} + +int acorn_adfs_new_format::identify(io_generic *io, UINT32 form_factor) +{ + int type = find_size(io, form_factor); + + if (type != -1) + return 100; + return 0; +} + +int acorn_adfs_new_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 acorn_adfs_new_format::format acorn_adfs_new_format::formats[] = +{ + { // D,E - 800K 3 1/2 inch 80 track double sided double density - gaps unverified + floppy_image::FF_35, floppy_image::DSDD, floppy_image::MFM, + 2000, 5, 80, 2, 1024, {}, -1, { 0,1,2,3,4 }, 60, 22, 43 + }, + { // F - 1600K 3 1/2 inch 80 track double sided quad density - gaps unverified + floppy_image::FF_35, floppy_image::DSQD, floppy_image::MFM, + 2000, 10, 80, 2, 1024, {}, -1, { 0,1,2,3,4,5,6,7,8,9 }, 60, 22, 43 + }, + {} +}; + + +acorn_dos_format::acorn_dos_format() : wd177x_format(formats) +{ +} + +const char *acorn_dos_format::name() const +{ + return "dos"; +} + +const char *acorn_dos_format::description() const +{ + return "Acorn DOS disk image"; +} + +const char *acorn_dos_format::extensions() const +{ + return "img,adl"; +} + +int acorn_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 + LOG_FORMATS("dos: 640k media type id %02X %s\n", cat[0], cat[0] != 0xff ? "invalid" : ""); + 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); + LOG_FORMATS("dos: 800k media type id %02X %s\n", cat[0], cat[0] != 0xfd ? "invalid" : ""); + if (cat[0] == 0xfd) return i; + break; + } + + } + } + LOG_FORMATS("dos: no match\n"); + return -1; +} + +int acorn_dos_format::identify(io_generic *io, UINT32 form_factor) +{ + int type = find_size(io, form_factor); + + if(type != -1) + return 100; + return 0; +} + +int acorn_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 acorn_dos_format::format acorn_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 + }, + {} +}; + + +acorn_cpm_format::acorn_cpm_format() : wd177x_format(formats) +{ +} + +const char *acorn_cpm_format::name() const +{ + return "cpm"; +} + +const char *acorn_cpm_format::description() const +{ + return "Acorn CP/M disk image"; +} + +const char *acorn_cpm_format::extensions() const +{ + return "img,ssd,dsd"; +} + +int acorn_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; + } + LOG_FORMATS("cpm: no match\n"); + return 0; +} + +int acorn_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 acorn_cpm_format::format acorn_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 + }, + {} +}; + + +torch_cpn_format::torch_cpn_format() : wd177x_format(formats) +{ +} + +const char *torch_cpn_format::name() const +{ + return "cpn"; +} + +const char *torch_cpn_format::description() const +{ + return "Torch CPN disk image"; +} + +const char *torch_cpn_format::extensions() const +{ + return "dsd"; +} + +int torch_cpn_format::identify(io_generic *io, UINT32 form_factor) +{ + int type = find_size(io, form_factor); + + if(type != -1) + return 50; + LOG_FORMATS("cpn: no match\n"); + return 0; +} + +int torch_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 torch_cpn_format::format torch_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_ACORN_SSD_FORMAT = &floppy_image_format_creator<acorn_ssd_format>; +const floppy_format_type FLOPPY_ACORN_DSD_FORMAT = &floppy_image_format_creator<acorn_dsd_format>; +const floppy_format_type FLOPPY_OPUS_DDOS_FORMAT = &floppy_image_format_creator<opus_ddos_format>; +const floppy_format_type FLOPPY_ACORN_ADFS_OLD_FORMAT = &floppy_image_format_creator<acorn_adfs_old_format>; +const floppy_format_type FLOPPY_ACORN_ADFS_NEW_FORMAT = &floppy_image_format_creator<acorn_adfs_new_format>; +const floppy_format_type FLOPPY_ACORN_DOS_FORMAT = &floppy_image_format_creator<acorn_dos_format>; +const floppy_format_type FLOPPY_ACORN_CPM_FORMAT = &floppy_image_format_creator<acorn_cpm_format>; +const floppy_format_type FLOPPY_TORCH_CPN_FORMAT = &floppy_image_format_creator<torch_cpn_format>; |