/* Copyright holders: Sarah Walker, Tenshi see COPYING for more details */ 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 (*comparesector)(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); double (*byteperiod)(int drive); void (*stop)(int drive); void (*poll)(int drive); } 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(int drive); void disc_poll_0(); void disc_poll_1(); 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_comparesector(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_hole(int drive); double disc_byteperiod(int drive); void disc_stop(int drive); int disc_empty(int drive); void disc_set_rate(int drive, int drvden, int rate); extern int disc_time; extern int disc_poll_time[2]; 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; extern int motoron[2]; 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 /* 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 #define BYTE_IS_FUZZY 0x80 #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 typedef union { uint16_t word; uint8_t bytes[2]; } crc_t; void disc_calccrc(uint8_t byte, crc_t *crc_var); typedef struct { uint16_t (*disk_flags)(int drive); uint16_t (*side_flags)(int drive); 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); int32_t (*extra_bit_cells)(int drive, int side); uint16_t* (*encoded_data)(int drive, int side); void (*read_revolution)(int drive); uint32_t (*index_hole_pos)(int drive, int side); uint32_t (*get_raw_size)(int drive, int side); 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); void d86f_reset_index_hole_pos(int drive, int side); uint16_t d86f_prepare_pretrack(int drive, int side, int iso); uint16_t d86f_prepare_sector(int drive, int side, int prev_pos, uint8_t *id_buf, uint8_t *data_buf, int data_len, int gap2, int gap3, int deleted, int bad_crc); int gap3_sizes[5][8][256]; void null_writeback(int drive); void null_write_data(int drive, int side, uint16_t pos, uint8_t data); int null_format_conditions(int drive); void d86f_unregister(int drive); uint8_t dmf_r[21]; uint8_t xdf_physical_sectors[2][2]; uint8_t xdf_gap3_sizes[2][2]; uint16_t xdf_trackx_spos[2][8]; typedef struct { uint8_t h; uint8_t r; } xdf_id_t; typedef union { uint16_t word; xdf_id_t id; } xdf_sector_t; xdf_sector_t xdf_img_layout[2][2][46]; xdf_sector_t xdf_disk_layout[2][2][38]; uint32_t td0_get_raw_tsize(int side_flags, int slower_rpm); void d86f_set_track_pos(int drive, uint32_t track_pos); int32_t null_extra_bit_cells(int drive, int side); uint16_t* common_encoded_data(int drive, int side); void common_read_revolution(int drive); void null_set_sector(int drive, int side, uint8_t c, uint8_t h, uint8_t r, uint8_t n); uint32_t null_index_hole_pos(int drive, int side); uint32_t common_get_raw_size(int drive, int side); typedef struct { uint8_t c; uint8_t h; uint8_t r; uint8_t n; } sector_id_fields_t; typedef union { uint32_t dword; uint8_t byte_array[4]; sector_id_fields_t id; } sector_id_t;