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flopimg: FM WIP (nw)

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This commit is contained in:
Curt Coder 2013-01-07 20:51:34 +00:00
parent 15604c6fc1
commit cc35a4ed7d
4 changed files with 36 additions and 33 deletions
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61
src/lib/formats/wd177x_dsk.c
View File

@ -106,34 +106,32 @@ void wd177x_format::build_sector_description(const format &f, UINT8 *sectdata, d
}
}
floppy_image_format_t::desc_e* wd177x_format::get_desc_fm(const format &f, int &current_size)
floppy_image_format_t::desc_e* wd177x_format::get_desc_fm(const format &f, int &current_size, int &end_gap_index)
{
static floppy_image_format_t::desc_e desc[25] = {
static floppy_image_format_t::desc_e desc[23] = {
/* 00 */ { FM, 0xff, f.gap_1 },
/* 01 */ { SECTOR_LOOP_START, 0, f.sector_count-1 },
/* 02 */ { FM, 0x00, 6 },
/* 03 */ { CRC_CCITT_FM_START, 1 },
/* 04 */ { RAW, 0x4489, 0 }, // TODO remove
/* 05 */ { FM, 0xfe, 1 },
/* 06 */ { TRACK_ID_FM },
/* 07 */ { HEAD_ID_FM },
/* 08 */ { SECTOR_ID_FM },
/* 09 */ { SIZE_ID_FM },
/* 10 */ { CRC_END, 1 },
/* 11 */ { CRC, 1 },
/* 12 */ { FM, 0xff, f.gap_2 },
/* 13 */ { FM, 0x00, 6 },
/* 14 */ { CRC_CCITT_FM_START, 2 },
/* 15 */ { RAW, 0x4489, 0 }, // TODO remove
/* 16 */ { FM, 0xfb, 1 },
/* 17 */ { SECTOR_DATA_FM, -1 },
/* 18 */ { CRC_END, 2 },
/* 19 */ { CRC, 2 },
/* 20 */ { FM, 0xff, f.gap_3 },
/* 21 */ { SECTOR_LOOP_END },
/* 22 */ { FM, 0x00, 0 },
/* 23 */ { RAWBITS, 0x9254, 0 },
/* 24 */ { END }
/* 04 */ { FM, 0xfe, 1 },
/* 05 */ { TRACK_ID_FM },
/* 06 */ { HEAD_ID_FM },
/* 07 */ { SECTOR_ID_FM },
/* 08 */ { SIZE_ID_FM },
/* 09 */ { CRC_END, 1 },
/* 10 */ { CRC, 1 },
/* 11 */ { FM, 0xff, f.gap_2 },
/* 12 */ { FM, 0x00, 6 },
/* 13 */ { CRC_CCITT_FM_START, 2 },
/* 14 */ { FM, 0xfb, 1 },
/* 15 */ { SECTOR_DATA_FM, -1 },
/* 16 */ { CRC_END, 2 },
/* 17 */ { CRC, 2 },
/* 18 */ { FM, 0xff, f.gap_3 },
/* 19 */ { SECTOR_LOOP_END },
/* 20 */ { FM, 0x00, 0 },
/* 21 */ { RAWBITS, 0xffff, 0 },
/* 22 */ { END }
};
current_size = f.gap_1*16;
@ -145,10 +143,12 @@ floppy_image_format_t::desc_e* wd177x_format::get_desc_fm(const format &f, int &
}
current_size += (6+1+4+2+f.gap_2+6+1+2+f.gap_3) * f.sector_count * 16;
end_gap_index = 20;
return desc;
}
floppy_image_format_t::desc_e* wd177x_format::get_desc_mfm(const format &f, int &current_size)
floppy_image_format_t::desc_e* wd177x_format::get_desc_mfm(const format &f, int &current_size, int &end_gap_index)
{
static floppy_image_format_t::desc_e desc[25] = {
/* 00 */ { MFM, 0x4e, f.gap_1 },
@ -187,6 +187,8 @@ floppy_image_format_t::desc_e* wd177x_format::get_desc_mfm(const format &f, int
}
current_size += (12+3+1+4+2+f.gap_2+12+3+1+2+f.gap_3) * f.sector_count * 16;
end_gap_index = 22;
return desc;
}
@ -199,15 +201,16 @@ bool wd177x_format::load(io_generic *io, UINT32 form_factor, floppy_image *image
const format &f = formats[type];
floppy_image_format_t::desc_e *desc;
int current_size;
int end_gap_index;
switch (f.encoding)
{
case floppy_image::FM:
desc = get_desc_fm(f, current_size);
desc = get_desc_fm(f, current_size, end_gap_index);
break;
case floppy_image::MFM:
default:
desc = get_desc_mfm(f, current_size);
desc = get_desc_mfm(f, current_size, end_gap_index);
break;
}
@ -217,9 +220,9 @@ bool wd177x_format::load(io_generic *io, UINT32 form_factor, floppy_image *image
throw emu_fatalerror("wd177x_format: Incorrect track layout, max_size=%d, current_size=%d", total_size, current_size);
// Fixup the end gap
desc[22].p2 = remaining_size / 16;
desc[23].p2 = remaining_size & 15;
desc[23].p1 >>= 16-(remaining_size & 15);
desc[end_gap_index].p2 = remaining_size / 16;
desc[end_gap_index + 1].p2 = remaining_size & 15;
desc[end_gap_index + 1].p1 >>= 16-(remaining_size & 15);
int track_size = compute_track_size(f);

4
src/lib/formats/wd177x_dsk.h
View File

@ -42,8 +42,8 @@ public:
protected:
const format *formats;
floppy_image_format_t::desc_e* get_desc_fm(const format &f, int &current_size);
floppy_image_format_t::desc_e* get_desc_mfm(const format &f, int &current_size);
floppy_image_format_t::desc_e* get_desc_fm(const format &f, int &current_size, int &end_gap_index);
floppy_image_format_t::desc_e* get_desc_mfm(const format &f, int &current_size, int &end_gap_index);
int find_size(io_generic *io, UINT32 form_factor);
int compute_track_size(const format &f) const;
void build_sector_description(const format &d, UINT8 *sectdata, desc_s *sectors) const;

2
src/mess/machine/comx_fd.c
View File

@ -236,7 +236,7 @@ UINT8 comx_fd_device::comx_io_r(address_space &space, offs_t offset)
if (m_q)
{
data = 0xfe | (m_fdc->intrq_r() ? 1 : 0);
logerror("%s FDC intrq read %02x\n", machine().describe_context(), data);
//logerror("%s FDC intrq read %02x\n", machine().describe_context(), data);
}
else
{