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| author | Jeff Armstrong <jeffrey.armstrong@approximatrix.com> | 2017-04-05 08:24:53 -0400 |
|---|---|---|
| committer | Jeff Armstrong <jeffrey.armstrong@approximatrix.com> | 2017-04-05 08:24:53 -0400 |
| commit | 9e41edbc48b85663236009cba2391df165dd1ee4 (patch) | |
| tree | 9f0da6419e7b6bf342d8fe5abbbb1422790b21c6 /rbfloppy.h | |
| download | rbimg-9e41edbc48b85663236009cba2391df165dd1ee4.tar.gz rbimg-9e41edbc48b85663236009cba2391df165dd1ee4.zip | |
Diffstat (limited to 'rbfloppy.h')
| -rwxr-xr-x | rbfloppy.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/rbfloppy.h b/rbfloppy.h new file mode 100755 index 0000000..1b383a0 --- /dev/null +++ b/rbfloppy.h @@ -0,0 +1,72 @@ +/* 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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