mirror of
https://github.com/cc65/cc65.git
synced 2024-11-01 11:04:34 +00:00
94 lines
4.8 KiB
C
94 lines
4.8 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* dio.h */
|
|
/* */
|
|
/* Low-Level diskette I/O functions */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 2000 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
|
|
|
|
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;
|
|
|
|
|
|
#ifdef __ATARI__
|
|
#define dio_query_sectsize(x) ((_sectsize_t)128)
|
|
#else
|
|
#define dio_query_sectsize(x) ((_sectsize_t)256)
|
|
#endif
|
|
/* queries sector size, currently hardcoded */
|
|
|
|
extern dhandle_t __fastcall__ dio_open(driveid_t drive_id);
|
|
/* open drive for subsequent dio access */
|
|
|
|
extern unsigned char __fastcall__ dio_close(dhandle_t handle);
|
|
/* close drive, returns oserror (0 for success) */
|
|
|
|
extern 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) */
|
|
|
|
extern 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) */
|
|
|
|
extern 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) */
|
|
|
|
|
|
extern 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) */
|
|
|
|
extern 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 */
|