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author | 2015-11-08 12:56:12 +0100 | |
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committer | 2015-11-08 12:56:12 +0100 | |
commit | 7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch) | |
tree | f310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/lib/formats/flex_dsk.cpp | |
parent | a57b46ae933badd7441ce1644711dbb851e2b504 (diff) |
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/lib/formats/flex_dsk.cpp')
-rw-r--r-- | src/lib/formats/flex_dsk.cpp | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/lib/formats/flex_dsk.cpp b/src/lib/formats/flex_dsk.cpp new file mode 100644 index 00000000000..ced4bf2f8a5 --- /dev/null +++ b/src/lib/formats/flex_dsk.cpp @@ -0,0 +1,107 @@ +// license:BSD-3-Clause +// copyright-holders:Barry Rodewald +/* + * flex_dsk.c - FLEX compatible disk images + * + * Created on: 24/06/2014 + */ + + #include "emu.h" // logerror +#include "flex_dsk.h" + +flex_format::flex_format() +{ +} + +const char *flex_format::name() const +{ + return "flex"; +} + +const char *flex_format::description() const +{ + return "FLEX compatible disk image"; +} + +const char *flex_format::extensions() const +{ + return "dsk"; +} + +bool flex_format::supports_save() const +{ + return true; +} + +int flex_format::identify(io_generic *io, UINT32 form_factor) +{ + io_generic_read(io, &info, 256 * 2, sizeof(struct sysinfo_sector)); + + if(((info.last_trk+1) * info.last_sec) * 256 == io_generic_size(io)) + { + osd_printf_verbose("flex_dsk: %i tracks, %i sectors\n",info.last_trk+1,info.last_sec); + return 100; + } + return 0; +} + +bool flex_format::load(io_generic *io, UINT32 form_factor, floppy_image *image) +{ + int spt = info.last_sec; + int bps = 256; + int cell_count = (form_factor == floppy_image::FF_525) ? 50000 : 100000; + int offset = 0; + int head_num = 1; + int total_tracks = info.last_trk+1; + bool double_sided = false; + + if(total_tracks == 40 && spt == 36) + double_sided = true; + if(total_tracks == 77 && spt == 30) + double_sided = true; + if(total_tracks == 80 && spt == 40) // 800kB + double_sided = true; + if(total_tracks == 80 && spt == 72) // 1.44MB + double_sided = true; + if(spt >= 20) + double_sided = true; + + if(double_sided) + { + spt = spt / 2; + head_num = 2; + } + + for(int track=0; track < total_tracks; track++) + for(int head=0;head < head_num;head++) + { + desc_pc_sector sects[80]; + UINT8 sect_data[20000]; + int sdatapos = 0; + for(int i=0; i<spt; i++) + { + sects[i].track = track; + sects[i].head = head; // no side select? + if(head == 0) + sects[i].sector = i+1; + else + sects[i].sector = i+1+spt; + sects[i].actual_size = bps; + sects[i].size = 1; + sects[i].deleted = false; + sects[i].bad_crc = false; + sects[i].data = §_data[sdatapos]; + io_generic_read(io, sects[i].data, offset, bps); + offset += bps; + sdatapos += bps; + } + // gap sizes unverified + if(total_tracks == 35 && spt == 18 && (track >= 1 && track <= 2)) // handle Gimix Flex 3.6 disk image, which the boot sector loads tracks 1 and 2 as MFM + build_wd_track_mfm(track, head, image, cell_count*2, spt, sects, 50, 32, 22); + else + build_wd_track_fm(track, head, image, cell_count, spt, sects, 24, 16, 11); + } + return true; +} + +const floppy_format_type FLOPPY_FLEX_FORMAT = &floppy_image_format_creator<flex_format>; |