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86Box/src/include/86box/fdc.h

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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Implementation of the NEC uPD-765 and compatible floppy disk
* controller.
*
*
*
* Authors: Sarah Walker, <https://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
* Fred N. van Kempen, <decwiz@yahoo.com>
*
* Copyright 2008-2020 Sarah Walker.
* Copyright 2016-2020 Miran Grca.
* Copyright 2018-2020 Fred N. van Kempen.
*/
#ifndef EMU_FDC_H
#define EMU_FDC_H
#define FDC_PRIMARY_ADDR 0x03f0
#define FDC_PRIMARY_IRQ 6
#define FDC_PRIMARY_DMA 2
#define FDC_PRIMARY_PCJR_ADDR 0x00f0
#define FDC_PRIMARY_PCJR_IRQ 6
#define FDC_PRIMARY_PCJR_DMA 2
#define FDC_SECONDARY_ADDR 0x0370
#define FDC_SECONDARY_IRQ 6
#define FDC_SECONDARY_DMA 2
#define FDC_TERTIARY_ADDR 0x0360
#define FDC_TERTIARY_IRQ 6
#define FDC_TERTIARY_DMA 2
#define FDC_QUATERNARY_ADDR 0x03e0
#define FDC_QUATERNARY_IRQ 6
#define FDC_QUATERNARY_DMA 2
#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_PS2 0x08 /* PS/1, PS/2 ISA */
#define FDC_FLAG_PS2_MCA 0x10 /* PS/2 MCA */
#define FDC_FLAG_SUPERIO 0x20 /* Super I/O chips */
#define FDC_FLAG_START_RWC_1 0x40 /* W83877F, W83977F */
#define FDC_FLAG_MORE_TRACKS 0x80 /* W83877F, W83977F, PC87306, PC87309 */
#define FDC_FLAG_NSC 0x100 /* PC87306, PC87309 */
#define FDC_FLAG_TOSHIBA 0x200 /* T1000, T1200 */
#define FDC_FLAG_AMSTRAD 0x400 /* Non-AT Amstrad machines */
#define FDC_FLAG_UMC 0x800 /* UMC UM8398 */
#define FDC_FLAG_ALI 0x1000 /* ALi M512x / M1543C */
#define FDC_FLAG_NO_DSR_RESET 0x2000 /* Has no DSR reset */
#define FDC_FLAG_DENSEL_INVERT 0x4000 /* Invert DENSEL polarity */
#define FDC_FLAG_FINTR 0x8000 /* Raise FINTR on data command finish */
#define FDC_FLAG_NEC 0x10000 /* Is NEC upd765-compatible */
#define FDC_FLAG_SEC 0x20000 /* Is Secondary */
#define FDC_FLAG_TER 0x40000 /* Is Tertiary */
#define FDC_FLAG_QUA 0x80000 /* Is Quaternary */
typedef struct fdc_t {
uint8_t dor;
uint8_t stat;
uint8_t command;
uint8_t processed_cmd;
uint8_t dat;
uint8_t st0;
uint8_t swap;
uint8_t dtl;
uint8_t swwp;
uint8_t disable_write;
uint8_t st5;
uint8_t st6;
uint8_t error;
uint8_t config;
uint8_t pretrk;
uint8_t power_down;
uint8_t head;
uint8_t lastdrive;
uint8_t sector;
uint8_t drive;
uint8_t rate;
uint8_t tc;
uint8_t pnum;
uint8_t ptot;
uint8_t reset_stat;
uint8_t seek_dir;
uint8_t perp;
uint8_t format_state;
uint8_t format_n;
uint8_t step;
uint8_t noprec;
uint8_t data_ready;
uint8_t paramstogo;
uint8_t enh_mode;
uint8_t dma;
uint8_t densel_polarity;
uint8_t densel_force;
uint8_t fifo;
uint8_t tfifo;
uint8_t drv2en;
uint8_t gap;
uint8_t enable_3f1;
uint8_t format_sectors;
uint8_t mfm;
uint8_t deleted;
uint8_t wrong_am;
uint8_t sc;
uint8_t fintr;
uint8_t rw_drive;
uint8_t lock;
uint8_t dsr;
uint8_t params[15];
uint8_t specify[2];
uint8_t res[11];
uint16_t eot[4];
uint8_t rwc[4];
uint16_t pcn[4];
uint16_t base_address;
uint16_t rw_track;
int bit_rate; /* Should be 250 at start. */
int bitcell_period;
int boot_drive;
int max_track;
int satisfying_sectors;
int flags;
int interrupt;
int irq; /* Should be 6 by default. */
int dma_ch; /* Should be 2 by default. */
int drvrate[4];
void *fifo_p;
int fifointest;
sector_id_t read_track_sector;
sector_id_t format_sector_id;
uint64_t watchdog_count;
pc_timer_t timer;
pc_timer_t watchdog_timer;
} 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 void fdc_set_power_down(fdc_t *fdc, uint8_t power_down);
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 void fdc_set_irq(fdc_t *fdc, int irq);
extern void fdc_set_dma_ch(fdc_t *fdc, int dma_ch);
extern int fdc_getdata(fdc_t *fdc, int last);
extern int fdc_data(fdc_t *fdc, uint8_t data, int last);
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_get_current_drive(void);
#ifdef EMU_DEVICE_H
extern const device_t fdc_xt_device;
extern const device_t fdc_xt_sec_device;
extern const device_t fdc_xt_ter_device;
extern const device_t fdc_xt_qua_device;
extern const device_t fdc_xt_t1x00_device;
extern const device_t fdc_xt_tandy_device;
extern const device_t fdc_xt_amstrad_device;
extern const device_t fdc_xt_umc_um8398_device;
extern const device_t fdc_pcjr_device;
extern const device_t fdc_at_device;
extern const device_t fdc_at_sec_device;
extern const device_t fdc_at_ter_device;
extern const device_t fdc_at_qua_device;
extern const device_t fdc_at_actlow_device;
extern const device_t fdc_at_smc_device;
extern const device_t fdc_at_ali_device;
extern const device_t fdc_at_winbond_device;
extern const device_t fdc_at_nsc_device;
extern const device_t fdc_at_nsc_dp8473_device;
extern const device_t fdc_ps2_device;
extern const device_t fdc_ps2_mca_device;
#endif
#endif /*EMU_FDC_H*/
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