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wd177x_dsk: add support to mark tracks as deleted data

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This commit is contained in:
Dirk Best 2015-05-31 21:38:50 +02:00
parent 22ee342634
commit d68270a157
2 changed files with 23 additions and 0 deletions
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18
src/lib/formats/wd177x_dsk.c
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@ -204,6 +204,12 @@ bool wd177x_format::load(io_generic *io, UINT32 form_factor, floppy_image *image
for(int track=0; track < f.track_count; track++)
for(int head=0; head < f.head_count; head++) {
if (f.encoding == floppy_image::FM)
desc[14].p1 = get_track_dam_fm(f, head, track);
else
desc[16].p1 = get_track_dam_mfm(f, head, track);
io_generic_read(io, sectdata, get_image_offset(f, head, track), track_size);
generate_track(desc, track, head, sectors, f.sector_count, total_size, image);
}
@ -345,6 +351,18 @@ int wd177x_format::get_image_offset(const format &f, int head, int track)
return (track * f.head_count + head) * compute_track_size(f);
}
int wd177x_format::get_track_dam_fm(const format &f, int head, int track)
{
// everything marked as data by default
return FM_DAM;
}
int wd177x_format::get_track_dam_mfm(const format &f, int head, int track)
{
// everything marked as data by default
return MFM_DAM;
}
void wd177x_format::check_compatibility(floppy_image *image, std::vector<int> &candidates)
{
UINT8 bitstream[500000/8];

5
src/lib/formats/wd177x_dsk.h
View File

@ -43,11 +43,16 @@ public:
virtual bool supports_save() const;
protected:
enum { FM_DAM = 0xf56f, FM_DDAM = 0xf56a, MFM_DAM = 0xfb, MFM_DDAM = 0xf8 };
const format *formats;
virtual floppy_image_format_t::desc_e* get_desc_fm(const format &f, int &current_size, int &end_gap_index);
virtual floppy_image_format_t::desc_e* get_desc_mfm(const format &f, int &current_size, int &end_gap_index);
virtual int find_size(io_generic *io, UINT32 form_factor);
virtual int get_image_offset(const format &f, int head, int track);
virtual int get_track_dam_fm(const format &f, int head, int track);
virtual int get_track_dam_mfm(const format &f, int head, int track);
int compute_track_size(const format &f) const;
void build_sector_description(const format &d, UINT8 *sectdata, desc_s *sectors) const;