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/* |
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* 1541d64.h - 1541 emulation in .d64 file |
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* |
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* Frodo (C) 1994-1997,2002 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#ifndef _1541D64_H |
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#define _1541D64_H |
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|
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#include "IEC.h" |
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|
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|
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// BAM structure |
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typedef struct { |
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uint8 dir_track; // Track... |
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uint8 dir_sector; // ...and sector of first directory block |
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int8 fmt_type; // Format type |
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int8 pad0; |
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uint8 bitmap[4*35]; // Sector allocation |
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uint8 disk_name[18]; // Disk name |
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uint8 id[2]; // Disk ID |
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int8 pad1; |
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uint8 fmt_char[2]; // Format characters |
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int8 pad2[4]; |
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int8 pad3[85]; |
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} BAM; |
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|
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// Directory entry structure |
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typedef struct { |
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uint8 type; // File type |
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uint8 track; // Track... |
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uint8 sector; // ...and sector of first data block |
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uint8 name[16]; // File name |
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uint8 side_track; // Track... |
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uint8 side_sector; // ...and sector of first side sector |
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uint8 rec_len; // Record length |
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int8 pad0[4]; |
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uint8 ovr_track; // Track... |
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uint8 ovr_sector; // ...and sector on overwrite |
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uint8 num_blocks_l; // Number of blocks, LSB |
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uint8 num_blocks_h; // Number of blocks, MSB |
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int8 pad1[2]; |
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} DirEntry; |
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|
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// Directory block structure |
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typedef struct { |
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uint8 padding[2]; // Keep DirEntry word-aligned |
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uint8 next_track; |
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uint8 next_sector; |
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DirEntry entry[8]; |
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} Directory; |
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|
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|
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class D64Drive : public Drive { |
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public: |
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D64Drive(IEC *iec, char *filepath); |
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virtual ~D64Drive(); |
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virtual uint8 Open(int channel, char *filename); |
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virtual uint8 Close(int channel); |
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virtual uint8 Read(int channel, uint8 *byte); |
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virtual uint8 Write(int channel, uint8 byte, bool eoi); |
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virtual void Reset(void); |
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|
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private: |
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void open_close_d64_file(char *d64name); |
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uint8 open_file(int channel, char *filename); |
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void convert_filename(char *srcname, char *destname, int *filemode, int *filetype); |
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bool find_file(char *filename, int *track, int *sector); |
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uint8 open_file_ts(int channel, int track, int sector); |
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uint8 open_directory(char *pattern); |
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uint8 open_direct(int channel, char *filename); |
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void close_all_channels(); |
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void execute_command(char *command); |
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void block_read_cmd(char *command); |
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void buffer_ptr_cmd(char *command); |
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bool parse_bcmd(char *cmd, int *arg1, int *arg2, int *arg3, int *arg4); |
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void chd64_cmd(char *d64name); |
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int alloc_buffer(int want); |
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void free_buffer(int buf); |
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bool read_sector(int track, int sector, uint8 *buffer); |
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int offset_from_ts(int track, int sector); |
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uint8 conv_from_64(uint8 c, bool map_slash); |
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|
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char orig_d64_name[256]; // Original path of .d64 file |
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|
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FILE *the_file; // File pointer for .d64 file |
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|
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uint8 *ram; // 2KB 1541 RAM |
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BAM *bam; // Pointer to BAM |
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Directory dir; // Buffer for directory blocks |
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|
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int chan_mode[16]; // Channel mode |
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int chan_buf_num[16]; // Buffer number of channel (for direct access channels) |
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uint8 *chan_buf[16]; // Pointer to buffer |
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uint8 *buf_ptr[16]; // Pointer in buffer |
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int buf_len[16]; // Remaining bytes in buffer |
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|
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bool buf_free[4]; // Buffer 0..3 free? |
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|
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char cmd_buffer[44]; // Buffer for incoming command strings |
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int cmd_len; // Length of received command |
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|
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int image_header; // Length of .d64 file header |
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|
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uint8 error_info[683]; // Sector error information (1 byte/sector) |
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}; |
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|
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#endif |
