84595f1c78
Unfinished JEGA emulation based on akm's DOSVAX (AX-emulating fork of DOSBox), not yet hooked into the reset of the emulator.
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Implementation of the 86F floppy image format (stores the
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* data in the form of FM/MFM-encoded transitions) which also
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* forms the core of the emulator's floppy disk emulation.
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*
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* Version: @(#)disc_86f.h 1.0.0 2017/05/30
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*
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* Author: Miran Grca, <mgrca8@gmail.com>
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* Copyright 2016-2017 Miran Grca.
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*/
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void d86f_init();
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void d86f_load(int drive, wchar_t *fn);
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void d86f_close(int drive);
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void d86f_seek(int drive, int track);
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int d86f_hole(int drive);
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double d86f_byteperiod(int drive);
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void d86f_stop(int drive);
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void d86f_poll();
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int d86f_realtrack(int track, int drive);
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void d86f_reset(int drive, int side);
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void d86f_readsector(int drive, int sector, int track, int side, int density, int sector_size);
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void d86f_writesector(int drive, int sector, int track, int side, int density, int sector_size);
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void d86f_comparesector(int drive, int sector, int track, int side, int rate, int sector_size);
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void d86f_readaddress(int drive, int side, int density);
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void d86f_format(int drive, int side, int density, uint8_t fill);
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void d86f_prepare_track_layout(int drive, int side);
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#define length_gap0 80
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#define length_gap1 50
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#define length_sync 12
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#define length_am 4
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#define length_crc 2
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#define IBM
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#define MFM
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#ifdef IBM
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#define pre_gap1 length_gap0 + length_sync + length_am
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#else
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#define pre_gap1 0
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#endif
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#define pre_track pre_gap1 + length_gap1
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#define pre_gap length_sync + length_am + 4 + length_crc
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#define pre_data length_sync + length_am
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#define post_gap length_crc
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#if 0
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extern int raw_tsize[2];
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extern int gap2_size[2];
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extern int gap3_size[2];
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extern int gap4_size[2];
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#endif
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