diff options
author | 2014-11-04 23:36:58 +0200 | |
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committer | 2014-11-04 23:37:05 +0200 | |
commit | 37a7ded8af44964577a779da48f8f0dee3c9f49a (patch) | |
tree | 7e99413f51e3c5d83e0d5b7473629e17b90e90b2 /src/lib/formats/victor9k_dsk.c | |
parent | f2f90cf34c3fceb50ce45b34e169a0d478af4a9b (diff) |
(MESS) victor9k: Floppy WIP. (nw)
Diffstat (limited to 'src/lib/formats/victor9k_dsk.c')
-rw-r--r-- | src/lib/formats/victor9k_dsk.c | 115 |
1 files changed, 112 insertions, 3 deletions
diff --git a/src/lib/formats/victor9k_dsk.c b/src/lib/formats/victor9k_dsk.c index bbc0b45aac9..afda79c95cd 100644 --- a/src/lib/formats/victor9k_dsk.c +++ b/src/lib/formats/victor9k_dsk.c @@ -36,6 +36,8 @@ 7 71-79 63-74 12 149.6 401 8 unused 75-79 11 144.0 417 + Interleave factor 3 + */ #include "emu.h" @@ -60,14 +62,121 @@ const char *victor9k_format::extensions() const return "img"; } +int victor9k_format::find_size(io_generic *io, UINT32 form_factor) +{ + UINT64 size = io_generic_size(io); + for(int i=0; formats[i].sector_count; i++) { + const format &f = formats[i]; + if(size == (UINT32) f.sector_count*f.sector_base_size*f.head_count) + return i; + } + return -1; +} + int victor9k_format::identify(io_generic *io, UINT32 form_factor) { + int type = find_size(io, form_factor); + + if (type != -1) + return 50; + return 0; } +floppy_image_format_t::desc_e* victor9k_format::get_sector_desc(const format &f, int ¤t_size, int sector_count, UINT8 id1, UINT8 id2, int gap_2) +{ + static floppy_image_format_t::desc_e desc[] = { + /* 00 */ { SECTOR_LOOP_START, 0, -1 }, + /* 01 */ { RAWBYTE, 0xff, 5 }, + /* 02 */ { GCR5, 0x08, 1 }, + /* 03 */ { CRC, 1 }, + /* 04 */ { CRC_CBM_START, 1 }, + /* 05 */ { SECTOR_ID_GCR5 }, + /* 06 */ { TRACK_ID_DOS2_GCR5 }, + /* 07 */ { GCR5, id2, 1 }, + /* 08 */ { GCR5, id1, 1 }, + /* 09 */ { CRC_END, 1 }, + /* 10 */ { GCR5, 0x0f, 2 }, + /* 11 */ { RAWBYTE, 0x55, f.gap_1 }, + /* 12 */ { RAWBYTE, 0xff, 5 }, + /* 13 */ { GCR5, 0x07, 1 }, + /* 14 */ { CRC_CBM_START, 2 }, + /* 15 */ { SECTOR_DATA_GCR5, -1 }, + /* 16 */ { CRC_END, 2 }, + /* 17 */ { CRC, 2 }, + /* 18 */ { GCR5, 0x00, 2 }, + /* 19 */ { RAWBYTE, 0x55, gap_2 }, + /* 20 */ { SECTOR_LOOP_END }, + /* 21 */ { RAWBYTE, 0x55, 0 }, + /* 22 */ { RAWBITS, 0x5555, 0 }, + /* 23 */ { END } + }; + + current_size = 40 + (1+1+4+2)*10 + (f.gap_1)*8 + 40 + (1+f.sector_base_size+1+2)*10 + gap_2*8; + + current_size *= sector_count; + return desc; +} + +void victor9k_format::build_sector_description(const format &f, UINT8 *sectdata, offs_t sect_offs, desc_s *sectors, int sector_count) const +{ + for (int i = 0; i < sector_count; i++) { + sectors[i].data = sectdata + sect_offs; + sectors[i].size = f.sector_base_size; + sectors[i].sector_id = i; + + sect_offs += sectors[i].size; + } +} + bool victor9k_format::load(io_generic *io, UINT32 form_factor, floppy_image *image) { - return false; + int type = find_size(io, form_factor); + if(type == -1) + return false; + + const format &f = formats[type]; + + UINT64 size = io_generic_size(io); + dynamic_buffer img; + img.resize(size); + + io_generic_read(io, img, 0, size); + + int track_offset = 0; + + UINT8 id1 = 0xde, id2 = 0xad; // TODO + + for (int head = 0; head < f.head_count; head++) { + for (int track = 0; track < f.track_count; track++) { + int current_size = 0; + int total_size = 200000000./cell_size[speed_zone[head][track]]; + int sector_count = sectors_per_track[head][track]; + int track_size = sector_count*f.sector_base_size; + + floppy_image_format_t::desc_e *desc = get_sector_desc(f, current_size, sector_count, id1, id2, f.gap_2); + + int remaining_size = total_size - current_size; + if(remaining_size < 0) + throw emu_fatalerror("victor9k_format: Incorrect track layout, max_size=%d, current_size=%d", total_size, current_size); + + // Fixup the end gap + desc[21].p2 = remaining_size / 8; + desc[22].p2 = remaining_size & 7; + desc[22].p1 >>= remaining_size & 0x01; + + desc_s sectors[40]; + + build_sector_description(f, img, track_offset, sectors, sector_count); + generate_track(desc, track, head, sectors, sector_count, total_size, image); + + track_offset += track_size; + } + } + + image->set_variant(f.variant); + + return true; } bool victor9k_format::supports_save() const @@ -77,10 +186,10 @@ bool victor9k_format::supports_save() const const victor9k_format::format victor9k_format::formats[] = { { // - floppy_image::FF_525, floppy_image::SSDD, 80, 1, 512 + floppy_image::FF_525, floppy_image::SSDD, 1224, 80, 1, 512, 9, 8 }, { // - floppy_image::FF_525, floppy_image::DSDD, 80, 2, 512 + floppy_image::FF_525, floppy_image::DSDD, 2448, 80, 2, 512, 9, 8 }, {} }; |