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/* Rainbow Image Utilities
* Copyright © 2008 Jeffrey Armstrong <jeff@rainbow-100.com>
* http://jeff.rainbow-100.com/
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __RAINBOW_FLOPPY_HEADERS
#define __RAINBOW_FLOPPY_HEADERS
/* Commands understood by access_sector() */
#define CMD_WRITE 1
#define CMD_WRITE_VERIFY 2
#define CMD_READ 0
/* The floppy access interrupt */
#define FLOPPY_INTR 0x65
/* The track and sector counts */
#define TRACK_MAX 80
#define SECTOR_MAX 10
/* Status codes */
#define OK 0
#define ERROR -1
#define ERROR_BAD_SECTOR -2
#define ERROR_FROM_BIOS -3
/* The bytes per sector on an RX50 */
#define BYTES_PER_SECTOR 512
/* The sector addressing mode flags */
#define MODE_PHYSICAL 1
#define MODE_LOGICAL 2
/* Writes a given sector using the data in buffer */
int write_sector(int unit, int track, int sector, char *buffer);
/* Reads a specified sector from disk into buffer */
int read_sector(int unit, int track, int sector, char *buffer);
/* Internal routine that performs all actual disk access through calls
* to interrupt 0x65. Some command ints are already #defined, but
* a few more exist that aren't listed here.
*/
int access_sector(int command, int unit, int track, int sector, char *buffer);
/* Determines the unit number for access_sector() from a given character.
* Expects a drive letter or a number. Returns -1 on error.
*/
int drive_id(char id);
/* Sets the mode of the sector addressing to either physical or
* logical by assigning a static variable.
*/
void set_mode(int mode);
/* Returns the current addressing mode */
int get_mode();
#endif /* __RAINBOW_FLOPPY_HEADERS */
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