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ipf: Describe the remaining fields [O. Galibert, SPS]
This commit is contained in:
Olivier Galibert
parent
c965e4ad27
commit
55e17a2bb9
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -1477,7 +1477,7 @@ src/lib/formats/imd_dsk.c svneol=native#text/plain
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src/lib/formats/ioprocs.c svneol=native#text/plain
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src/lib/formats/ioprocs.h svneol=native#text/plain
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src/lib/formats/ipf_dsk.c svneol=native#text/plain
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src/lib/formats/ipf_dsk.h svneol=native#text/plain
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src/lib/formats/ipf_dsk.h -text svneol=native#text/plain
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src/lib/formats/kim1_cas.c svneol=native#text/plain
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src/lib/formats/kim1_cas.h svneol=native#text/plain
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src/lib/formats/lviv_lvt.c svneol=native#text/plain
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@ -94,11 +94,11 @@ bool ipf_format::parse_info(const UINT8 *info)
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type = r32(info+12);
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if(type != 1)
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return false;
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f4 = r32(info+16); // Usually 2
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f8 = r32(info+20); // Usually 1
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encoder_type = r32(info+16); // 1 for CAPS, 2 for SPS
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encoder_revision = r32(info+20); // 1 always
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release = r32(info+24);
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revision = r32(info+28);
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f14 = r32(info+32); // Perhaps some kind of (unchecked) checksum
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origin = r32(info+32); // Original source reference
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min_cylinder = r32(info+36);
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max_cylinder = r32(info+40);
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min_head = r32(info+44);
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@ -144,7 +144,7 @@ bool ipf_format::parse_imge(const UINT8 *imge)
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return false;
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t->type = r32(imge+20);
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t->t12 = r32(imge+24); // Usually 1
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t->sigtype = r32(imge+24); // 1 for 2us cells, no other value valid
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t->size_bytes = r32(imge+28);
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t->index_bytes = r32(imge+32);
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t->index_cells = r32(imge+36);
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@ -152,11 +152,11 @@ bool ipf_format::parse_imge(const UINT8 *imge)
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t->gapsize_cells = r32(imge+44);
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t->size_cells = r32(imge+48);
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t->block_count = r32(imge+52);
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t->t44 = r32(imge+56); // Usually 0
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t->process = r32(imge+56); // encoder process, always 0
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t->weak_bits = r32(imge+60);
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t->t56 = r32(imge+68);
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t->t60 = r32(imge+72);
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t->t64 = r32(imge+76);
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t->reserved[0] = r32(imge+68);
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t->reserved[1] = r32(imge+72);
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t->reserved[2] = r32(imge+76);
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return true;
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}
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@ -167,7 +167,7 @@ bool ipf_format::parse_data(const UINT8 *data, UINT32 &pos, UINT32 max_extra_siz
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if(!t)
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return false;
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t->d4 = r32(data+16); // Somehow related to the number of data cells
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t->data_size_bits = r32(data+16);
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t->data = data+28;
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t->data_size = r32(data+12);
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if(t->data_size > max_extra_size)
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@ -1,87 +1,87 @@
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#ifndef IPF_DSK_H_
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#define IPF_DSK_H_
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#include "flopimg.h"
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class ipf_format : public floppy_image_format_t
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{
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public:
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ipf_format();
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virtual int identify(io_generic *io);
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virtual bool load(io_generic *io, floppy_image *image);
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virtual const char *name() const;
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virtual const char *description() const;
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virtual const char *extensions() const;
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virtual bool supports_save() const;
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private:
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struct track_info {
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UINT32 cylinder, head, type;
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UINT32 t12, t44, t56, t60, t64;
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UINT32 size_bytes, size_cells;
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UINT32 index_bytes, index_cells;
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UINT32 datasize_cells, gapsize_cells;
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UINT32 block_count, weak_bits;
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UINT32 d4;
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bool info_set;
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const UINT8 *data;
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UINT32 data_size;
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};
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track_info *tinfos;
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UINT32 tcount;
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UINT32 type, release, revision;
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UINT32 f4, f8, f14;
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UINT32 min_cylinder, max_cylinder, min_head, max_head;
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UINT32 credit_day, credit_time;
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UINT32 platform[4], extra[5];
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UINT32 crc32r(const UINT8 *data, UINT32 size);
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bool parse_info(const UINT8 *info);
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bool parse_imge(const UINT8 *imge);
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bool parse_data(const UINT8 *data, UINT32 &pos, UINT32 max_extra_size);
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bool scan_one_tag(UINT8 *data, UINT32 size, UINT32 &pos, UINT8 *&tag, UINT32 &tsize);
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bool scan_all_tags(UINT8 *data, UINT32 size);
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static UINT32 r32(const UINT8 *p);
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static UINT32 rb(const UINT8 *&p, int count);
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track_info *get_index(UINT32 idx);
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void track_write_raw(UINT32 *&track, const UINT8 *data, UINT32 cells, bool &context);
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void track_write_mfm(UINT32 *&track, const UINT8 *data, UINT32 start_offset, UINT32 patlen, UINT32 cells, bool &context);
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void track_write_weak(UINT32 *&track, UINT32 cells);
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bool generate_block_data(const UINT8 *data, const UINT8 *dlimit, UINT32 *track, UINT32 *tlimit, bool &context);
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bool gap_description_to_reserved_size(const UINT8 *&data, const UINT8 *dlimit, UINT32 &res_size);
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bool generate_gap_from_description(const UINT8 *&data, const UINT8 *dlimit, UINT32 *track, UINT32 size, bool pre, bool &context);
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bool generate_block_gap_0(UINT32 gap_cells, UINT8 pattern, UINT32 &spos, UINT32 ipos, UINT32 *track, bool &context);
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bool generate_block_gap_1(UINT32 gap_cells, UINT32 &spos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block_gap_2(UINT32 gap_cells, UINT32 &spos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block_gap_3(UINT32 gap_cells, UINT32 &spos, UINT32 ipos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block_gap(UINT32 gap_type, UINT32 gap_cells, UINT8 pattern, UINT32 &spos, UINT32 ipos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block(track_info *t, UINT32 idx, UINT32 ipos, UINT32 *track, UINT32 &pos, UINT32 &dpos, UINT32 &gpos, UINT32 &spos, bool &context);
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UINT32 block_compute_real_size(track_info *t);
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void timing_set(UINT32 *track, UINT32 start, UINT32 end, UINT32 time);
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bool generate_timings(track_info *t, UINT32 *track, const UINT32 *data_pos, const UINT32 *gap_pos);
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void rotate(UINT32 *track, UINT32 offset, UINT32 size);
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void mark_track_splice(UINT32 *t);
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bool generate_track(track_info *t, floppy_image *image);
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bool generate_tracks(floppy_image *image);
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bool parse(UINT8 *data, UINT32 size, floppy_image *image);
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};
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extern const floppy_format_type FLOPPY_IPF_FORMAT;
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#endif /*IPF_DSK_H_*/
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#ifndef IPF_DSK_H_
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#define IPF_DSK_H_
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#include "flopimg.h"
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class ipf_format : public floppy_image_format_t
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{
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public:
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ipf_format();
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virtual int identify(io_generic *io);
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virtual bool load(io_generic *io, floppy_image *image);
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virtual const char *name() const;
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virtual const char *description() const;
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virtual const char *extensions() const;
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virtual bool supports_save() const;
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private:
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struct track_info {
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UINT32 cylinder, head, type;
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UINT32 sigtype, process, reserved[3];
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UINT32 size_bytes, size_cells;
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UINT32 index_bytes, index_cells;
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UINT32 datasize_cells, gapsize_cells;
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UINT32 block_count, weak_bits;
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UINT32 data_size_bits;
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bool info_set;
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const UINT8 *data;
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UINT32 data_size;
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};
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track_info *tinfos;
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UINT32 tcount;
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UINT32 type, release, revision;
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UINT32 encoder_type, encoder_revision, origin;
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UINT32 min_cylinder, max_cylinder, min_head, max_head;
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UINT32 credit_day, credit_time;
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UINT32 platform[4], extra[5];
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UINT32 crc32r(const UINT8 *data, UINT32 size);
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bool parse_info(const UINT8 *info);
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bool parse_imge(const UINT8 *imge);
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bool parse_data(const UINT8 *data, UINT32 &pos, UINT32 max_extra_size);
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bool scan_one_tag(UINT8 *data, UINT32 size, UINT32 &pos, UINT8 *&tag, UINT32 &tsize);
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bool scan_all_tags(UINT8 *data, UINT32 size);
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static UINT32 r32(const UINT8 *p);
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static UINT32 rb(const UINT8 *&p, int count);
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track_info *get_index(UINT32 idx);
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void track_write_raw(UINT32 *&track, const UINT8 *data, UINT32 cells, bool &context);
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void track_write_mfm(UINT32 *&track, const UINT8 *data, UINT32 start_offset, UINT32 patlen, UINT32 cells, bool &context);
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void track_write_weak(UINT32 *&track, UINT32 cells);
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bool generate_block_data(const UINT8 *data, const UINT8 *dlimit, UINT32 *track, UINT32 *tlimit, bool &context);
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bool gap_description_to_reserved_size(const UINT8 *&data, const UINT8 *dlimit, UINT32 &res_size);
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bool generate_gap_from_description(const UINT8 *&data, const UINT8 *dlimit, UINT32 *track, UINT32 size, bool pre, bool &context);
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bool generate_block_gap_0(UINT32 gap_cells, UINT8 pattern, UINT32 &spos, UINT32 ipos, UINT32 *track, bool &context);
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bool generate_block_gap_1(UINT32 gap_cells, UINT32 &spos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block_gap_2(UINT32 gap_cells, UINT32 &spos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block_gap_3(UINT32 gap_cells, UINT32 &spos, UINT32 ipos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block_gap(UINT32 gap_type, UINT32 gap_cells, UINT8 pattern, UINT32 &spos, UINT32 ipos, const UINT8 *data, const UINT8 *dlimit, UINT32 *track, bool &context);
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bool generate_block(track_info *t, UINT32 idx, UINT32 ipos, UINT32 *track, UINT32 &pos, UINT32 &dpos, UINT32 &gpos, UINT32 &spos, bool &context);
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UINT32 block_compute_real_size(track_info *t);
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void timing_set(UINT32 *track, UINT32 start, UINT32 end, UINT32 time);
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bool generate_timings(track_info *t, UINT32 *track, const UINT32 *data_pos, const UINT32 *gap_pos);
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void rotate(UINT32 *track, UINT32 offset, UINT32 size);
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void mark_track_splice(UINT32 *t);
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bool generate_track(track_info *t, floppy_image *image);
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bool generate_tracks(floppy_image *image);
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bool parse(UINT8 *data, UINT32 size, floppy_image *image);
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};
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extern const floppy_format_type FLOPPY_IPF_FORMAT;
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#endif /*IPF_DSK_H_*/
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