-} _dio_phys_pos;
-
-
-#ifdef __ATARI__
-#define _dio_query_sectsize(x) ((_sectsize_t)128)
-#else
-#define _dio_query_sectsize(x) ((_sectsize_t)256)
-#endif
-
-extern _dhandle_t __fastcall__ _dio_open (_driveid_t drive_id);
-extern unsigned char __fastcall__ _dio_close (_dhandle_t handle);
-extern unsigned char __fastcall__ _dio_format(_dhandle_t handle,
- unsigned int format);
-extern unsigned char __fastcall__ _dio_read(_dhandle_t handle,
- _sectnum_t sect_num,
- void *buffer);
-extern unsigned char __fastcall__ _dio_write(_dhandle_t handle,
- _sectnum_t sect_num,
+} dio_phys_pos;
+
+
+
+/*****************************************************************************/
+/* Code */
+/*****************************************************************************/
+
+
+
+unsigned __fastcall__ dio_query_sectsize (dhandle_t handle);
+/* returns sector size */
+
+unsigned __fastcall__ dio_query_sectcount (dhandle_t handle);
+/* returns sector count */
+
+dhandle_t __fastcall__ dio_open (unsigned char device);
+/* open device for subsequent dio access */
+
+unsigned char __fastcall__ dio_close (dhandle_t handle);
+/* close device, returns oserror (0 for success) */
+
+unsigned char __fastcall__ dio_read (dhandle_t handle,
+ unsigned sect_num,
+ void *buffer);
+/* read sector <sect_num> from device <handle> to memory at <buffer> */
+/* the number of bytes transferred depends on the sector size */
+/* returns oserror (0 for success) */
+
+unsigned char __fastcall__ dio_write (dhandle_t handle,
+ unsigned sect_num,
+ const void *buffer);
+/* write memory at <buffer> to sector <sect_num> on device <handle>, no verify */
+/* the number of bytes transferred depends on the sector size */
+/* returns oserror (0 for success) */
+
+unsigned char __fastcall__ dio_write_verify (dhandle_t handle,
+ unsigned sect_num,