/**************************************************************************************
Copyright (c) 2002
The UbixOS Project
$Id: fdc.h,v 1.1 2002/04/26 23:39:12 reddawg Exp $
**************************************************************************************/
#ifndef FDC_H
#define FDC_H
#include <ubixos/mytypes.h>
typedef struct DrvGeom {
BYTE heads;
BYTE tracks;
BYTE spt; /* sectors per track */
} DrvGeom;
/* drive geometries */
#define DG144_HEADS 2 /* heads per drive (1.44M) */
#define DG144_TRACKS 80 /* number of tracks (1.44M) */
#define DG144_SPT 18 /* sectors per track (1.44M) */
#define DG144_GAP3FMT 0x54 /* gap3 while formatting (1.44M) */
#define DG144_GAP3RW 0x1b /* gap3 while reading/writing (1.44M) */
#define DG168_HEADS 2 /* heads per drive (1.68M) */
#define DG168_TRACKS 80 /* number of tracks (1.68M) */
#define DG168_SPT 21 /* sectors per track (1.68M) */
#define DG168_GAP3FMT 0x0c /* gap3 while formatting (1.68M) */
#define DG168_GAP3RW 0x1c /* gap3 while reading/writing (1.68M) */
/* IO ports */
#define FDC_DOR (0x3f2) /* Digital Output Register */
#define FDC_MSR (0x3f4) /* Main Status Register (input) */
#define FDC_DRS (0x3f4) /* Data Rate Select Register (output) */
#define FDC_DATA (0x3f5) /* Data Register */
#define FDC_DIR (0x3f7) /* Digital Input Register (input) */
#define FDC_CCR (0x3f7) /* Configuration Control Register (output) */
/* command bytes (these are 765 commands + options such as MFM, etc) */
#define CMD_SPECIFY (0x03) /* specify drive timings */
#define CMD_WRITE (0xc5) /* write data (+ MT,MFM) */
#define CMD_READ (0xe6) /* read data (+ MT,MFM,SK) */
#define CMD_RECAL (0x07) /* recalibrate */
#define CMD_SENSEI (0x08) /* sense interrupt status */
#define CMD_FORMAT (0x4d) /* format track (+ MFM) */
#define CMD_SEEK (0x0f) /* seek track */
#define CMD_VERSION (0x10) /* FDC version */
/* function prototypes */
void initFloppy();
void reset(void);
BOOL diskchange(void);
void motoron(void);
void motoroff(void);
void recalibrate(void);
BOOL seek(int track);
BOOL log_disk(DrvGeom *g);
BOOL read_block(int block,BYTE *blockbuff,unsigned long nosectors);
BOOL write_block(int block,BYTE *blockbuff,unsigned long nosectors);
BOOL format_track(BYTE track,DrvGeom *g);
#endif /* FDC_H */
