/* * VARCem Virtual ARchaeological Computer EMulator. * An emulator of (mostly) x86-based PC systems and devices, * using the ISA,EISA,VLB,MCA and PCI system buses, roughly * spanning the era between 1981 and 1995. * * This file is part of the VARCem Project. * * Implementation of the NEC uPD-765 and compatible floppy disk * controller. * * Version: @(#)fdc.h 1.0.3 2018/03/17 * * Authors: Fred N. van Kempen, * Miran Grca, * Sarah Walker, * * Copyright 2018 Fred N. van Kempen. * Copyright 2016-2018 Miran Grca. * Copyright 2008-2018 Sarah Walker. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the: * * Free Software Foundation, Inc. * 59 Temple Place - Suite 330 * Boston, MA 02111-1307 * USA. */ #ifndef EMU_FDC_H # define EMU_FDC_H #define FDC_FLAG_PCJR 0x01 /* PCjr */ #define FDC_FLAG_DISKCHG_ACTLOW 0x02 /* Amstrad, PS/1, PS/2 ISA */ #define FDC_FLAG_AT 0x04 /* AT+, PS/x */ #define FDC_FLAG_PS1 0x08 /* PS/1, PS/2 ISA */ #define FDC_FLAG_SUPERIO 0x10 /* Super I/O chips */ #define FDC_FLAG_START_RWC_1 0x20 /* W83877F, W83977F */ #define FDC_FLAG_MORE_TRACKS 0x40 /* W83877F, W83977F, PC87306, PC87309 */ #define FDC_FLAG_NSC 0x80 /* PC87306, PC87309 */ typedef struct { uint8_t dor, stat, command, dat, st0, swap; uint8_t swwp, disable_write; uint8_t params[256], res[256]; uint8_t specify[256], format_dat[256]; uint8_t config, pretrk; uint8_t fifobuf[16]; uint16_t base_address; int head, sector, drive, lastdrive; int pcn[4], eot[256]; int rw_track, pos; int pnum, ptot; int rate, reset_stat; int lock, perp; int abort; int format_state, format_n; int tc, written; int data_ready, inread; int bitcell_period, enh_mode; int rwc[4], drvrate[4]; int boot_drive, dma; int densel_polarity, densel_force; int fifo, tfifo; int fifobufpos, drv2en; int gap, dtl; int enable_3f1, format_sectors; int max_track, mfm; int deleted, wrong_am; int sc, satisfying_sectors; int fintr, rw_drive; int flags, interrupt; int irq; /* Should be 6 by default. */ int dma_ch; /* Should be 2 by default. */ int bit_rate; /* Should be 250 at start. */ int paramstogo; sector_id_t read_track_sector; int64_t time; int64_t watchdog_timer, watchdog_count; } fdc_t; extern void fdc_remove(fdc_t *fdc); extern void fdc_poll(fdc_t *fdc); extern void fdc_abort(fdc_t *fdc); extern void fdc_set_dskchg_activelow(fdc_t *fdc); extern void fdc_3f1_enable(fdc_t *fdc, int enable); extern int fdc_get_bit_rate(fdc_t *fdc); extern int fdc_get_bitcell_period(fdc_t *fdc); /* A few functions to communicate between Super I/O chips and the FDC. */ extern void fdc_update_enh_mode(fdc_t *fdc, int enh_mode); extern int fdc_get_rwc(fdc_t *fdc, int drive); extern void fdc_update_rwc(fdc_t *fdc, int drive, int rwc); extern int fdc_get_boot_drive(fdc_t *fdc); extern void fdc_update_boot_drive(fdc_t *fdc, int boot_drive); extern void fdc_update_densel_polarity(fdc_t *fdc, int densel_polarity); extern uint8_t fdc_get_densel_polarity(fdc_t *fdc); extern void fdc_update_densel_force(fdc_t *fdc, int densel_force); extern void fdc_update_drvrate(fdc_t *fdc, int drive, int drvrate); extern void fdc_update_drv2en(fdc_t *fdc, int drv2en); extern void fdc_noidam(fdc_t *fdc); extern void fdc_nosector(fdc_t *fdc); extern void fdc_nodataam(fdc_t *fdc); extern void fdc_cannotformat(fdc_t *fdc); extern void fdc_wrongcylinder(fdc_t *fdc); extern void fdc_badcylinder(fdc_t *fdc); extern void fdc_writeprotect(fdc_t *fdc); extern void fdc_datacrcerror(fdc_t *fdc); extern void fdc_headercrcerror(fdc_t *fdc); extern void fdc_nosector(fdc_t *fdc); extern int real_drive(fdc_t *fdc, int drive); extern sector_id_t fdc_get_read_track_sector(fdc_t *fdc); extern int fdc_get_compare_condition(fdc_t *fdc); extern int fdc_is_deleted(fdc_t *fdc); extern int fdc_is_sk(fdc_t *fdc); extern void fdc_set_wrong_am(fdc_t *fdc); extern int fdc_get_drive(fdc_t *fdc); extern int fdc_get_perp(fdc_t *fdc); extern int fdc_get_format_n(fdc_t *fdc); extern int fdc_is_mfm(fdc_t *fdc); extern double fdc_get_hut(fdc_t *fdc); extern double fdc_get_hlt(fdc_t *fdc); extern void fdc_request_next_sector_id(fdc_t *fdc); extern void fdc_stop_id_request(fdc_t *fdc); extern int fdc_get_gap(fdc_t *fdc); extern int fdc_get_gap2(fdc_t *fdc, int drive); extern int fdc_get_dtl(fdc_t *fdc); extern int fdc_get_format_sectors(fdc_t *fdc); extern uint8_t fdc_get_swwp(fdc_t *fdc); extern void fdc_set_swwp(fdc_t *fdc, uint8_t swwp); extern uint8_t fdc_get_diswr(fdc_t *fdc); extern void fdc_set_diswr(fdc_t *fdc, uint8_t diswr); extern uint8_t fdc_get_swap(fdc_t *fdc); extern void fdc_set_swap(fdc_t *fdc, uint8_t swap); extern void fdc_finishcompare(fdc_t *fdc, int satisfying); extern void fdc_finishread(fdc_t *fdc); extern void fdc_sector_finishcompare(fdc_t *fdc, int satisfying); extern void fdc_sector_finishread(fdc_t *fdc); extern void fdc_track_finishread(fdc_t *fdc, int condition); extern int fdc_is_verify(fdc_t *fdc); extern void fdc_overrun(fdc_t *fdc); extern void fdc_set_base(fdc_t *fdc, int base); extern int fdc_getdata(fdc_t *fdc, int last); extern int fdc_data(fdc_t *fdc, uint8_t data); extern void fdc_sectorid(fdc_t *fdc, uint8_t track, uint8_t side, uint8_t sector, uint8_t size, uint8_t crc1, uint8_t crc2); extern uint8_t fdc_read(uint16_t addr, void *priv); extern void fdc_reset(void *priv); extern uint8_t fdc_ps1_525(void); #ifdef EMU_DEVICE_H extern const device_t fdc_xt_device; extern const device_t fdc_pcjr_device; extern const device_t fdc_at_device; extern const device_t fdc_at_actlow_device; extern const device_t fdc_at_ps1_device; extern const device_t fdc_at_smc_device; extern const device_t fdc_at_winbond_device; extern const device_t fdc_at_nsc_device; #endif #endif /*EMU_FDC_H*/