git.sur5r.net Git - cc65/blob - include/dio.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                   dio.h                                   */
   4 /*                                                                           */
   5 /*                       Low-Level diskette I/O functions                    */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2000 Christian Groessler <cpg@aladdin.de>                             */
  10 /*                                                                           */
  11 /*                                                                           */
  12 /* This software is provided 'as-is', without any expressed or implied       */
  13 /* warranty.  In no event will the authors be held liable for any damages    */
  14 /* arising from the use of this software.                                    */
  15 /*                                                                           */
  16 /* Permission is granted to anyone to use this software for any purpose,     */
  17 /* including commercial applications, and to alter it and redistribute it    */
  18 /* freely, subject to the following restrictions:                            */
  19 /*                                                                           */
  20 /* 1. The origin of this software must not be misrepresented; you must not   */
  21 /*    claim that you wrote the original software. If you use this software   */
  22 /*    in a product, an acknowledgment in the product documentation would be  */
  23 /*    appreciated but is not required.                                       */
  24 /* 2. Altered source versions must be plainly marked as such, and must not   */
  25 /*    be misrepresented as being the original software.                      */
  26 /* 3. This notice may not be removed or altered from any source              */
  27 /*    distribution.                                                          */
  28 /*                                                                           */
  29 /*****************************************************************************/
  30
  31 #ifndef _DIO_H
  32 #define _DIO_H
  33
  34 typedef unsigned char       _driveid_t;
  35 typedef unsigned int        _sectnum_t;
  36 typedef unsigned int        _sectsize_t;
  37 typedef struct __dhandle_t *_dhandle_t;
  38
  39 typedef struct {
  40   unsigned char  head;
  41   unsigned       track;
  42   unsigned       sector;
  43 } _dio_phys_pos;
  44
  45
  46 #ifdef __ATARI__
  47 #define _dio_query_sectsize(x) ((_sectsize_t)128)
  48 #else
  49 #define _dio_query_sectsize(x) ((_sectsize_t)256)
  50 #endif
  51
  52 extern _dhandle_t    __fastcall__ _dio_open  (_driveid_t drive_id);
  53 extern unsigned char __fastcall__ _dio_close (_dhandle_t handle);
  54 extern unsigned char __fastcall__ _dio_format(_dhandle_t handle,
  55                                               unsigned int format);
  56 extern unsigned char __fastcall__ _dio_read(_dhandle_t handle,
  57                                             _sectnum_t sect_num,
  58                                             void *buffer);
  59 extern unsigned char __fastcall__ _dio_write(_dhandle_t handle,
  60                                              _sectnum_t sect_num,
  61                                              const void *buffer);
  62 extern unsigned char __fastcall__ _dio_write_verify(_dhandle_t handle,
  63                                                     _sectnum_t sect_num,
  64                                                     const void *buffer);
  65
  66 extern unsigned char __fastcall__ _dio_phys_to_log(_dhandle_t handle,
  67                                                    _dio_phys_pos *physpos,   /* input */
  68                                                    _sectnum_t *sectnum);     /* output */
  69 extern unsigned char __fastcall__ _dio_log_to_phys(_dhandle_t handle,
  70                                                    _dio_phys_pos *physpos,   /* output */
  71                                                    _sectnum_t *sectnum);     /* input */
  72
  73 #endif /* #ifndef _DIO_H */