| /** |
| * \addtogroup c64fs |
| * @{ |
| * |
| */ |
| |
| /** |
| * \file |
| * C64 direct disk I/O. |
| * \author Adam Dunkels <adam@dunkels.com> |
| * |
| */ |
| |
| /* |
| * Copyright (c) 2003, Adam Dunkels. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * 3. The name of the author may not be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * This file is part of the Contiki desktop OS |
| * |
| * $Id: c64-dio.c,v 1.2 2004/02/16 20:58:54 adamdunkels Exp $ |
| * |
| */ |
| |
| #include "c64-dio.h" |
| #include "c64-dio-asm.h" |
| |
| /*-----------------------------------------------------------------------------------*/ |
| /** |
| * Read a block of data (256 bytes) from the disk. |
| * |
| * \param track The track of the disk block to be read. |
| * |
| * \param sector The sector of the disk block to be read. |
| * |
| * \param ptr A pointer to a buffer than must be able to accomodate |
| * 256 bytes of data. |
| * |
| * \return An error code or C64_DIO_OK if the data was successfully |
| * read. |
| */ |
| /*-----------------------------------------------------------------------------------*/ |
| unsigned char |
| c64_dio_read_block(unsigned char track, |
| unsigned char sector, |
| unsigned char *ptr) |
| { |
| c64_dio_asm_track = track; |
| c64_dio_asm_sector = sector; |
| c64_dio_asm_ptr = ptr; |
| return c64_dio_asm_read_block(); |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| /** |
| * Write a block of data (256 bytes) to the disk. |
| * |
| * \param track The track of the disk block to be written. |
| * |
| * \param sector The sector of the disk block to be written. |
| * |
| * \param ptr A pointer to a buffer containing the 256 bytes of data |
| * to be written. |
| * |
| * \return An error code or C64_DIO_OK if the data was successfully |
| * written. |
| */ |
| /*-----------------------------------------------------------------------------------*/ |
| unsigned char |
| c64_dio_write_block(unsigned char track, |
| unsigned char sector, |
| unsigned char *ptr) |
| { |
| c64_dio_asm_track = track; |
| c64_dio_asm_sector = sector; |
| c64_dio_asm_ptr = ptr; |
| return c64_dio_asm_write_block(); |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| /** |
| * Initialize the direct disk I/O routines for a particular disk drive. |
| * |
| * This function must be called before any of the other direct disk |
| * I/O functions can be used. |
| * |
| * \param drive The drive number of the disk drive for which the |
| * direct disk I/O should be enabled. |
| */ |
| /*-----------------------------------------------------------------------------------*/ |
| void |
| c64_dio_init(unsigned char drive) |
| { |
| c64_dio_asm_init(drive); |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| /** @} */ |