120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/**
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* \addtogroup c64fs
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* @{
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*
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*/
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/**
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* \file
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* C64 direct disk I/O.
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* \author Adam Dunkels <adam@dunkels.com>
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*
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*/
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/*
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* Copyright (c) 2003, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the Contiki desktop OS
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*
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* $Id: c64-dio.c,v 1.1 2007/05/23 23:11:28 oliverschmidt Exp $
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*
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*/
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#include "c64-dio.h"
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#include "c64-dio-asm.h"
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/*-----------------------------------------------------------------------------------*/
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/**
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* Read a block of data (256 bytes) from the disk.
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*
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* \param track The track of the disk block to be read.
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*
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* \param sector The sector of the disk block to be read.
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*
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* \param ptr A pointer to a buffer than must be able to accomodate
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* 256 bytes of data.
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*
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* \return An error code or C64_DIO_OK if the data was successfully
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* read.
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*/
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/*-----------------------------------------------------------------------------------*/
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unsigned char
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c64_dio_read_block(unsigned char track,
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unsigned char sector,
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unsigned char *ptr)
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{
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c64_dio_asm_track = track;
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c64_dio_asm_sector = sector;
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c64_dio_asm_ptr = ptr;
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return c64_dio_asm_read_block();
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}
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/*-----------------------------------------------------------------------------------*/
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/**
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* Write a block of data (256 bytes) to the disk.
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*
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* \param track The track of the disk block to be written.
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*
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* \param sector The sector of the disk block to be written.
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*
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* \param ptr A pointer to a buffer containing the 256 bytes of data
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* to be written.
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*
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* \return An error code or C64_DIO_OK if the data was successfully
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* written.
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*/
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/*-----------------------------------------------------------------------------------*/
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unsigned char
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c64_dio_write_block(unsigned char track,
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unsigned char sector,
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unsigned char *ptr)
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{
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c64_dio_asm_track = track;
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c64_dio_asm_sector = sector;
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c64_dio_asm_ptr = ptr;
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return c64_dio_asm_write_block();
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}
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/*-----------------------------------------------------------------------------------*/
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/**
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* Initialize the direct disk I/O routines for a particular disk drive.
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*
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* This function must be called before any of the other direct disk
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* I/O functions can be used.
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*
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* \param drive The drive number of the disk drive for which the
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* direct disk I/O should be enabled.
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*/
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/*-----------------------------------------------------------------------------------*/
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void
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c64_dio_init(unsigned char drive)
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{
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c64_dio_asm_init(drive);
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}
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/*-----------------------------------------------------------------------------------*/
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/** @} */
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