/*****************************************************************************//*                                                                           *//*                                   dio.h                                   *//*                                                                           *//*                       Low-Level diskette I/O functions                    *//*                                                                           *//*                                                                           *//*                                                                           *//* (C) 2005 Christian Groessler <cpg@aladdin.de>                             *//*                                                                           *//*                                                                           *//* This software is provided 'as-is', without any expressed or implied       *//* warranty.  In no event will the authors be held liable for any damages    *//* arising from the use of this software.                                    *//*                                                                           *//* Permission is granted to anyone to use this software for any purpose,     *//* including commercial applications, and to alter it and redistribute it    *//* freely, subject to the following restrictions:                            *//*                                                                           *//* 1. The origin of this software must not be misrepresented; you must not   *//*    claim that you wrote the original software. If you use this software   *//*    in a product, an acknowledgment in the product documentation would be  *//*    appreciated but is not required.                                       *//* 2. Altered source versions must be plainly marked as such, and must not   *//*    be misrepresented as being the original software.                      *//* 3. This notice may not be removed or altered from any source              *//*    distribution.                                                          *//*                                                                           *//*****************************************************************************/#ifndef _DIO_H#define _DIO_H/* Please note: All functions in this file will set _oserror *and* return its * value. The only exception is dio_open, which will return NULL, but _oserror * will be set. All function will also set _oserror in case of successful * execution, effectively clearing it. *//*****************************************************************************//*                                   Data				     *//*****************************************************************************/typedef unsigned char       driveid_t;typedef unsigned int        sectnum_t;typedef unsigned int        sectsize_t;typedef struct __dhandle_t *dhandle_t;typedef struct {  unsigned char  head;  unsigned       track;  unsigned       sector;} dio_phys_pos;/*****************************************************************************//*                                   Code				     *//*****************************************************************************/sectsize_t __fastcall__ dio_query_sectsize(dhandle_t handle);/* queries sector size, currently hardcoded */sectnum_t __fastcall__ dio_query_sectcount(dhandle_t handle);/* Return the sector count for a disk. */dhandle_t __fastcall__ dio_open(driveid_t drive_id);/* open drive for subsequent dio access */unsigned char __fastcall__ dio_close(dhandle_t handle);/* close drive, returns oserror (0 for success) */unsigned char __fastcall__ dio_read(dhandle_t handle,                                    sectnum_t sect_num,                                    void *buffer);/* read sector <sect_num> from drive <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,                                     sectnum_t sect_num,                                     const void *buffer);/* write memory at <buffer> to sector <sect_num> on drive <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,                                            sectnum_t sect_num,                                            const void *buffer);/* write memory at <buffer> to sector <sect_num> on drive <handle>, verify after write *//* the number of bytes transferred depends on the sector size *//* returns oserror (0 for success) */unsigned char __fastcall__ dio_phys_to_log(dhandle_t handle,                                           const dio_phys_pos *physpos, /* input */                                           sectnum_t *sectnum);         /* output *//* convert physical sector address (head/track/sector) to logical sector number *//* returns oserror (0 for success) */unsigned char __fastcall__ dio_log_to_phys(dhandle_t handle,                                           const sectnum_t *sectnum, /* input */                                           dio_phys_pos *physpos);   /* output *//* convert logical sector number to physical sector address (head/track/sector) *//* returns oserror (0 for success) */#endif /* #ifndef _DIO_H */