1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/*********************************************************************
formats/wd177x_sk.h
helper for simple wd177x-formatted disk images
*********************************************************************/
#ifndef MAME_FORMATS_WD177X_DSK_H
#define MAME_FORMATS_WD177X_DSK_H
#pragma once
#include "flopimg.h"
class wd177x_format : public floppy_image_format_t
{
public:
struct format {
uint32_t form_factor; // See floppy_image for possible values
uint32_t variant; // See floppy_image for possible values
uint32_t encoding; // See floppy_image for possible values
int cell_size; // See floppy_image_format_t for details
int sector_count;
int track_count;
int head_count;
int sector_base_size;
int per_sector_size[40]; // if sector_base_size is 0
int sector_base_id; // 0 or 1 usually, -1 if there's interleave
int per_sector_id[40]; // if sector_base_id is -1. If both per are used, then sector per_sector_id[i] has size per_sector_size[i]
int gap_1; // Usually around 80 - number of 4e between index and first IDAM sync
int gap_2; // 22 for <=1.44Mb, 41 for 2.88Mb - number of 4e between sector header and data sync
int gap_3; // Usually 24 - number of 4e between sector crc and next IDAM
};
// End the array with {}
wd177x_format(const format *formats);
virtual int identify(io_generic *io, uint32_t form_factor) override;
virtual bool load(io_generic *io, uint32_t form_factor, floppy_image *image) override;
virtual bool save(io_generic *io, floppy_image *image) override;
virtual bool supports_save() const override;
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 ¤t_size, int &end_gap_index);
virtual floppy_image_format_t::desc_e* get_desc_mfm(const format &f, int ¤t_size, int &end_gap_index);
virtual int find_size(io_generic *io, uint32_t 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;
virtual void build_sector_description(const format &d, uint8_t *sectdata, desc_s *sectors, int track, int head) const;
virtual void check_compatibility(floppy_image *image, std::vector<int> &candidates);
void extract_sectors(floppy_image *image, const format &f, desc_s *sdesc, int track, int head);
};
#endif // MAME_FORMATS_WD177X_DSK_H
|