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- /*
- msg.c - Magic Super Griffin support for uCON64
- Copyright (c) 2003 dbjh
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
- #include <stdlib.h>
- #include "misc/archive.h"
- #include "misc/misc.h"
- #include "ucon64.h"
- #include "ucon64_misc.h"
- #include "backup/ffe.h"
- #include "backup/msg.h"
- #ifdef USE_PARALLEL
- static st_ucon64_obj_t msg_obj[] =
- {
- {UCON64_PCE, WF_DEFAULT | WF_STOP | WF_NO_SPLIT | WF_NO_ROM}
- };
- #endif
- const st_getopt2_t msg_usage[] =
- {
- {
- NULL, 0, 0, 0,
- NULL, "Magic Super Griffin/MSG"/*"1993/1994/1995/19XX Front Far East/FFE http://www.front.com.tw"*/,
- NULL
- },
- #ifdef USE_PARALLEL
- {
- "xmsg", 0, 0, UCON64_XMSG,
- NULL, "send/receive ROM to/from Magic Super Griffin/MSG; " OPTION_LONG_S "port=PORT\n"
- "receives automatically when ROM does not exist",
- &msg_obj[0]
- },
- #endif
- {NULL, 0, 0, 0, NULL, NULL, NULL}
- };
- #ifdef USE_PARALLEL
- #define BUFFERSIZE 8192 // don't change, only 8192 works!
- static void set_header (unsigned char *buffer);
- static int check (unsigned char *info_block, int index1, int index2, int size);
- #if BUFFERSIZE < 512
- #error receive_rom_info() expects BUFFERSIZE to be at least 512 bytes.
- #endif
- static void
- set_header (unsigned char *buffer)
- {
- unsigned short n;
- unsigned char m = 0, sizes[] = "\x10\x20\x30\x30\x40\x40\x60\x80";
- for (n = 0; n < 128; n++)
- {
- ffe_send_command (5, n, 0);
- buffer[n] = ffe_send_command1 (0xa0a0);
- wait2 (1);
- if (buffer[n] != 0xff)
- m = 1;
- }
- if (m == 0)
- { // no cartridge in Magic Super Griffin
- buffer[0] = 0;
- return;
- }
- m = 0;
- if (!check (buffer, 0, 0x40, 0x20))
- m |= 2;
- if (check (buffer, 0, 0x20, 0x20))
- {
- if (!check (buffer, 0, 0x10, 0x10))
- m |= 1;
- }
- else
- {
- m |= 4;
- if (!check (buffer, 0x40, 0x60, 0x20))
- m |= 1;
- }
- memset (buffer, 0, MSG_HEADER_LEN);
- buffer[0] = sizes[m];
- if (buffer[0] == 0x30)
- buffer[1] = 1;
- buffer[8] = 0xaa;
- buffer[9] = 0xbb;
- buffer[10] = 2;
- }
- static int
- check (unsigned char *info_block, int index1, int index2, int size)
- {
- int n;
- for (n = 0; n < size; n++)
- if (info_block[n + index1] != info_block[n + index2])
- return 0;
- return 1;
- }
- int
- msg_read_rom (const char *filename, unsigned short parport)
- {
- FILE *file;
- unsigned char *buffer, blocksleft, emu_mode_select;
- int size, bytesreceived = 0;
- time_t starttime;
- unsigned short blocksdone = 0;
- ffe_init_io (parport);
- if ((file = fopen (filename, "wb")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_WRITE_ERROR], filename);
- exit (1);
- }
- if ((buffer = (unsigned char *) malloc (BUFFERSIZE)) == NULL)
- {
- fprintf (stderr, ucon64_msg[FILE_BUFFER_ERROR], BUFFERSIZE);
- exit (1);
- }
- set_header (buffer);
- if (buffer[0] == 0)
- {
- fprintf (stderr, "ERROR: There is no cartridge present in the Magic Super Griffin\n");
- fclose (file);
- remove (filename);
- exit (1);
- }
- blocksleft = buffer[0];
- size = buffer[0] * 8192;
- printf ("Receive: %d Bytes (%.4f Mb)\n", size, (float) size / MBIT);
- fwrite (buffer, 1, MSG_HEADER_LEN, file); // write header
- emu_mode_select = buffer[1];
- ffe_send_command (5, 0, 0);
- ffe_send_command0 (0xbff0, 0);
- printf ("Press q to abort\n\n");
- starttime = time (NULL);
- while (blocksleft > 0)
- {
- ffe_send_command (5, blocksdone, 0);
- if (emu_mode_select && blocksdone >= 32)
- ffe_send_command (5, blocksdone + 32, 0);
- ffe_receive_block (0xa000, buffer, BUFFERSIZE);
- // vgs aborts if the checksum doesn't match the data, we let the user decide
- blocksleft--;
- blocksdone++;
- fwrite (buffer, 1, BUFFERSIZE, file);
- bytesreceived += BUFFERSIZE;
- ucon64_gauge (starttime, bytesreceived, size);
- ffe_checkabort (2);
- }
- free (buffer);
- fclose (file);
- return 0;
- }
- int
- msg_write_rom (const char *filename, unsigned short parport)
- {
- FILE *file;
- unsigned char *buffer, emu_mode_select;
- int bytesread, bytessent = 0, size;
- time_t starttime;
- unsigned short blocksdone = 0;
- ffe_init_io (parport);
- if ((file = fopen (filename, "rb")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_READ_ERROR], filename);
- exit (1);
- }
- if ((buffer = (unsigned char *) malloc (BUFFERSIZE)) == NULL)
- {
- fprintf (stderr, ucon64_msg[FILE_BUFFER_ERROR], BUFFERSIZE);
- exit (1);
- }
- size = ucon64.file_size - MSG_HEADER_LEN;
- printf ("Send: %d Bytes (%.4f Mb)\n", size, (float) size / MBIT);
- fread (buffer, 1, MSG_HEADER_LEN, file);
- emu_mode_select = buffer[1]; // this byte is needed later
- ffe_send_command0 (0xe008, 0);
- printf ("Press q to abort\n\n");
- starttime = time (NULL);
- while ((bytesread = fread (buffer, 1, BUFFERSIZE, file)) != 0)
- {
- ffe_send_command (5, blocksdone, 0);
- ffe_send_block (0x8000, buffer, (unsigned short) bytesread);
- blocksdone++;
- bytessent += bytesread;
- ucon64_gauge (starttime, bytessent, size);
- ffe_checkabort (2);
- }
- if (emu_mode_select & 1)
- ffe_send_command (4, 0xff00, 0);
- else
- ffe_send_command (4, 0xff03, 0);
- free (buffer);
- fclose (file);
- return 0;
- }
- #endif // USE_PARALLEL
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