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86Box/src/disc.h

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Add copyrights for all files to comply with the GPL v2.
2016-08-14 22:07:17 -04:00
/* Copyright holders: Sarah Walker, Tenshi
see COPYING for more details
*/
Initial submission of the PCem-Experimental source code.
2016-06-26 00:34:39 +02:00
typedef struct
{
void (*seek)(int drive, int track);
void (*readsector)(int drive, int sector, int track, int side, int density, int sector_size);
void (*writesector)(int drive, int sector, int track, int side, int density, int sector_size);
void (*readaddress)(int drive, int track, int side, int density);
void (*format)(int drive, int track, int side, int density, uint8_t fill);
int (*hole)(int drive);
Added support for the D86F floppy image format I invented that allows things not possible with IMG images; Applied all mainline PCem commits; Settings dialog now says 86Box instead of PCem; Manifest renamed from PCem to 86Box.
2016-08-31 22:49:56 +02:00
double (*byteperiod)(int drive);
Initial submission of the PCem-Experimental source code.
2016-06-26 00:34:39 +02:00
void (*stop)(int drive);
Timer counters now 64-bit; Cleaned up floppy code a lot and reverted to single poller; Fixed segment present bit and limit checking at read/write within segment; The ASUS boards now have memregs too; RTC code improved based on suggestion by Sarah Walker; Fixed SVGA odd/even emulation and added chain odd/even support; Removed non-existent CPU's.
2016-07-19 02:44:32 +02:00
void (*poll)();
Initial submission of the PCem-Experimental source code.
2016-06-26 00:34:39 +02:00
int (*realtrack)(int drive, int track);
} DRIVE;
extern DRIVE drives[2];
extern int curdrive;
void disc_load(int drive, char *fn);
void disc_new(int drive, char *fn);
void disc_close(int drive);
void disc_init();
void disc_reset();
void disc_poll();
void disc_seek(int drive, int track);
void disc_readsector(int drive, int sector, int track, int side, int density, int sector_size);
void disc_writesector(int drive, int sector, int track, int side, int density, int sector_size);
void disc_readaddress(int drive, int track, int side, int density);
void disc_format(int drive, int track, int side, int density, uint8_t fill);
int disc_realtrack(int drive, int track);
int disc_hole(int drive);
Added support for the D86F floppy image format I invented that allows things not possible with IMG images; Applied all mainline PCem commits; Settings dialog now says 86Box instead of PCem; Manifest renamed from PCem to 86Box.
2016-08-31 22:49:56 +02:00
double disc_byteperiod(int drive);
Initial submission of the PCem-Experimental source code.
2016-06-26 00:34:39 +02:00
void disc_stop(int drive);
int disc_empty(int drive);
void disc_set_rate(int drive, int drvden, int rate);
void disc_set_drivesel(int drive);
extern int disc_time;
Timer counters now 64-bit; Cleaned up floppy code a lot and reverted to single poller; Fixed segment present bit and limit checking at read/write within segment; The ASUS boards now have memregs too; RTC code improved based on suggestion by Sarah Walker; Fixed SVGA odd/even emulation and added chain odd/even support; Removed non-existent CPU's.
2016-07-19 02:44:32 +02:00
extern int64_t disc_poll_time;
Initial submission of the PCem-Experimental source code.
2016-06-26 00:34:39 +02:00
extern int disc_drivesel;
void fdc_callback();
int fdc_data(uint8_t dat);
void fdc_spindown();
void fdc_finishread();
void fdc_notfound();
void fdc_datacrcerror();
void fdc_headercrcerror();
void fdc_writeprotect();
int fdc_getdata(int last);
void fdc_sectorid(uint8_t track, uint8_t side, uint8_t sector, uint8_t size, uint8_t crc1, uint8_t crc2);
void fdc_indexpulse();
/*extern int fdc_time;
extern int fdc_ready;
extern int fdc_indexcount;*/
extern int motorspin;
Timer enable switches are 64-bit; Floppy reads/writes now correctly finish at gaps; Sector-based reads/writes no longer cause a delay when signaling finish.
2016-08-21 03:42:24 +02:00
extern int64_t motoron;
Initial submission of the PCem-Experimental source code.
2016-06-26 00:34:39 +02:00
extern int swwp;
extern int disable_write;
extern int defaultwriteprot;
//extern char discfns[4][260];
extern int writeprot[2], fwriteprot[2];
extern int disc_track[2];
extern int disc_changed[2];
extern int drive_empty[2];
extern int drive_type[2];
/*Used in the Read A Track command. Only valid for disc_readsector(). */
#define SECTOR_FIRST -2
#define SECTOR_NEXT -1
Rewrite of .86F handling code; Applied TheCollector1995's hardware cursor fix.
2016-09-03 18:07:46 +02:00
/* Bits 0-3 define byte type, bit 5 defines whether it is a per-track (0) or per-sector (1) byte, if bit 7 is set, the byte is the index hole. */
#define BYTE_GAP0 0x00
#define BYTE_GAP1 0x10
#define BYTE_GAP4 0x20
#define BYTE_GAP2 0x40
#define BYTE_GAP3 0x50
#define BYTE_I_SYNC 0x01
#define BYTE_ID_SYNC 0x41
#define BYTE_DATA_SYNC 0x51
#define BYTE_IAM_SYNC 0x02
#define BYTE_IDAM_SYNC 0x42
#define BYTE_DATAAM_SYNC 0x52
#define BYTE_IAM 0x03
#define BYTE_IDAM 0x43
#define BYTE_DATAAM 0x53
#define BYTE_ID 0x44
#define BYTE_DATA 0x54
#define BYTE_ID_CRC 0x45
#define BYTE_DATA_CRC 0x55
Added support for version 1.20 of the 86F format; Hopefully made the 86F handler for the FDC READ TRACK command work correctly.
2016-09-07 20:59:08 +02:00
#define BYTE_IS_FUZZY 0x80
Rewrite of .86F handling code; Applied TheCollector1995's hardware cursor fix.
2016-09-03 18:07:46 +02:00
#define BYTE_INDEX_HOLE 0x80 /* 1 = index hole, 0 = regular byte */
#define BYTE_IS_SECTOR 0x40 /* 1 = per-sector, 0 = per-track */
#define BYTE_IS_POST_TRACK 0x20 /* 1 = after all sectors, 0 = before or during all sectors */
#define BYTE_IS_DATA 0x10 /* 1 = data, 0 = id */
#define BYTE_TYPE 0x0F /* 5 = crc, 4 = data, 3 = address mark, 2 = address mark sync, 1 = sync, 0 = gap */
#define BYTE_TYPE_GAP 0x00
#define BYTE_TYPE_SYNC 0x01
#define BYTE_TYPE_AM_SYNC 0x02
#define BYTE_TYPE_AM 0x03
#define BYTE_TYPE_DATA 0x04
#define BYTE_TYPE_CRC 0x05
Rewritten parts of the 86F handler to minimize false CRC errors and misidentification of sectors; Replaced IMG handler with one that now proxies to the 86F handler; Applies the remaining Mainline PCem speedup commit; Fixed the National Semiconductors PC87306 Super I/O Chip's serial port IRQ assignment; DMF images are now loaded with the correct sector interleave, improving read/write speed; XDF images are now loaded in a way that emulates the real order of the sectors on the track, improving read/write speed; Added 16-bit physical memory read/write routines (mem_phys_readw, mem_phys_writew) and modified the 16-bit DMA code to use them instead of two 8-bit reads/writes.
2016-09-22 21:22:56 +02:00
typedef union {
uint16_t word;
uint8_t bytes[2];
} crc_t;
void disc_calccrc(int drive, uint8_t byte, crc_t *crc_var);
typedef struct
{
Fixed several compile-breaking errors.
2016-09-26 21:03:23 +02:00
uint16_t (*disk_flags)(int drive);
uint16_t (*side_flags)(int drive);
Rewritten parts of the 86F handler to minimize false CRC errors and misidentification of sectors; Replaced IMG handler with one that now proxies to the 86F handler; Applies the remaining Mainline PCem speedup commit; Fixed the National Semiconductors PC87306 Super I/O Chip's serial port IRQ assignment; DMF images are now loaded with the correct sector interleave, improving read/write speed; XDF images are now loaded in a way that emulates the real order of the sectors on the track, improving read/write speed; Added 16-bit physical memory read/write routines (mem_phys_readw, mem_phys_writew) and modified the 16-bit DMA code to use them instead of two 8-bit reads/writes.
2016-09-22 21:22:56 +02:00
void (*writeback)(int drive);
void (*set_sector)(int drive, int side, uint8_t c, uint8_t h, uint8_t r, uint8_t n);
uint8_t (*read_data)(int drive, int side, uint16_t pos);
void (*write_data)(int drive, int side, uint16_t pos, uint8_t data);
int (*format_conditions)(int drive);
uint8_t check_crc;
} d86f_handler_t;
d86f_handler_t d86f_handler[2];
void d86f_common_handlers(int drive);
int d86f_is_40_track(int drive);
uint8_t* d86f_track_data(int drive, int side);
uint8_t* d86f_track_layout(int drive, int side);
uint16_t d86f_prepare_pretrack(int drive, int side, int iso, int write_data);
Removed debug fatal on data CRC error from the 86F handler; Prepare sector function can ignore rather than wrap around if so told; Format now tells prepare sector to not wrap around.
2016-09-23 01:06:05 +02:00
uint16_t d86f_prepare_sector(int drive, int side, int pos, uint8_t *id_buf, uint8_t *data_buf, int data_len, int write_data, int gap2, int gap3, int limit);
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