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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#ifndef MAME_FORMATS_MFI_DSK_H
#define MAME_FORMATS_MFI_DSK_H
#pragma once
#include "flopimg.h"
class mfi_format : public floppy_image_format_t
{
public:
mfi_format();
virtual int identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const override;
virtual bool load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image) const override;
virtual bool save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image) const override;
virtual const char *name() const override;
virtual const char *description() const override;
virtual const char *extensions() const override;
virtual bool supports_save() const override;
private:
enum {
TIME_MASK = 0x0fffffff,
MG_MASK = 0xf0000000,
MG_SHIFT = 28,
OLD_MG_A = (0 << MG_SHIFT),
OLD_MG_B = (1 << MG_SHIFT),
OLD_MG_N = (2 << MG_SHIFT),
OLD_MG_D = (3 << MG_SHIFT),
MG_F = (0 << MG_SHIFT), //!< - 0, MG_F -> Flux orientation change
MG_N = (1 << MG_SHIFT), //!< - 1, MG_N -> Non-magnetized zone (neutral)
MG_D = (2 << MG_SHIFT), //!< - 2, MG_D -> Damaged zone, reads as neutral but cannot be changed by writing
MG_E = (3 << MG_SHIFT), //!< - 3, MG_E -> End of zone
RESOLUTION_SHIFT = 30,
CYLINDER_MASK = 0x3fffffff
};
static const char sign_old[16];
static const char sign[16];
struct header {
char sign[16];
unsigned int cyl_count, head_count;
unsigned int form_factor, variant;
};
struct entry {
unsigned int offset, compressed_size, uncompressed_size, write_splice;
};
};
extern const mfi_format FLOPPY_MFI_FORMAT;
#endif // MAME_FORMATS_MFI_DSK_H
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