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- /*
- mcd.c - Mike Pavone's Genesis/Sega CD transfer cable support for uCON64
- Copyright (c) 2004 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 "misc/parallel.h"
- #include "misc/term.h"
- #include "ucon64.h"
- #include "ucon64_misc.h"
- #include "backup/mcd.h"
- #ifdef USE_PARALLEL
- static st_ucon64_obj_t mcd_obj[] =
- {
- {UCON64_GEN, WF_DEFAULT | WF_STOP | WF_NO_SPLIT | WF_NO_ROM}
- };
- #endif
- const st_getopt2_t mcd_usage[] =
- {
- {
- NULL, 0, 0, 0,
- NULL, "Mike Pavone's Genesis/Sega CD transfer cable",
- NULL
- },
- #ifdef USE_PARALLEL
- {
- "xmcd", 0, 0, UCON64_XMCD,
- NULL, "receive ROM from Genesis/Sega CD; " OPTION_LONG_S "port=PORT",
- &mcd_obj[0]
- },
- #endif
- {NULL, 0, 0, 0, NULL, NULL, NULL}
- };
- #ifdef USE_PARALLEL
- #define BUFFERSIZE 8192
- static void
- checkabort (int status)
- {
- if ((!ucon64.frontend ? kbhit () : 0) && getch () == 'q')
- {
- puts ("\nProgram aborted");
- exit (status);
- }
- }
- static void
- read_block (unsigned char *buffer, int size, unsigned short parport)
- {
- int i;
- for (i = 0; i < size; i++)
- {
- while (inportb (parport + PARPORT_STATUS) & 0x08)
- ;
- outportb (parport + PARPORT_CONTROL, 0xa2);
- while (!(inportb (parport + PARPORT_STATUS) & 0x08))
- ;
- buffer[i] = inportb (parport + PARPORT_DATA) & 0x0f;
- outportb (parport + PARPORT_CONTROL, 0xa0);
- while (inportb (parport + PARPORT_STATUS) & 0x08)
- ;
- outportb (parport + PARPORT_CONTROL, 0xa2);
- while (!(inportb (parport + PARPORT_STATUS) & 0x08))
- ;
- buffer[i] |= (inportb (parport + PARPORT_DATA) & 0x0f) << 4;
- outportb (parport + PARPORT_CONTROL, 0xa0);
- }
- }
- int
- mcd_read_rom (const char *filename, unsigned short parport)
- {
- FILE *file;
- unsigned char buffer[BUFFERSIZE];
- int n_bytes = 0, size;
- time_t starttime;
- #if (defined __unix__ || defined __BEOS__) && !defined __MSDOS__
- init_conio ();
- if (register_func (deinit_conio) == -1)
- {
- fputs ("ERROR: Could not register function with register_func()\n", stderr);
- exit (1);
- }
- #endif
- parport_print_info ();
- if ((file = fopen (filename, "wb")) == NULL)
- {
- fprintf (stderr, ucon64_msg[OPEN_WRITE_ERROR], filename);
- exit (1);
- }
- read_block (buffer, 1, parport);
- size = (buffer[0] + 1) * 64 * 1024;
- printf ("Receive: %d Bytes (%.4f Mb)\n\n", size, (float) size / MBIT);
- puts ("Press q to abort\n");
- starttime = time (NULL);
- while (n_bytes < size)
- {
- read_block (buffer, BUFFERSIZE, parport);
- fwrite (buffer, 1, BUFFERSIZE, file);
- n_bytes += BUFFERSIZE;
- ucon64_gauge (starttime, n_bytes, size);
- checkabort (2);
- }
- fclose (file);
- return 0;
- }
- #endif // USE_PARALLEL
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