160 lines
4.7 KiB
C
160 lines
4.7 KiB
C
/*
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mccl.c - Mad Catz Camera Link (Game Boy Camera) support for uCON64
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Copyright (c) 2002 NoisyB
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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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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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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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This cable is made by Mad Catz, Inc. and has a Game Boy link connector on one
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end and a parallel port connector on the other. It is designed to interface
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with the Game Boy Camera cart and comes with included software for this. It
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works by simulating the Game Boy Printer with a PIC chip inside the parallel
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connector shell. It doesn't do a particularly good job at that so it pretty
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much only works with the Game Boy Camera.
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Mad Catz Camera Link Communications Protocol
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Printer IO Ports:
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Base+0: Data Port
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Base+1: Status Port
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Base+2: Control
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Reset Procedure:
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1. Output 0x24 to control (tristate data and set control to 0100)
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2. Wait for bit 5 of status port to become 1
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3. Read lower 4 bits of data port
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4. If read data != 4, then go to step 1.
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5. (Useless read of control port?)
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6. Output 0x22 to control (tristate data and set control to 0010)
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7. Wait for bit 5 of status port to become 0
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8. Output 0x26 to control (tristate data and set control to 0110)
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Data Read Procedure:
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1. Output 0x26 to control (tristate data and set control to 0110)
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2. Wait for bit 5 of status port to become 1
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3. Read lower 4 bits of data port, store to lower 4 bits of received byte
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4. (Useless read of control port?)
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5. Output 0x22 to control (tristate data and set control to 0010)
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6. Wait for bit 5 of status port to become 0
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7. Output 0x26 to control (tristate data and set control to 0110)
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8. Wait for bit 5 of status port to become 1
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9. Read lower 4 bits of data port, store to upper 4 bits of received byte
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10. (Useless read of control port?)
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11. Output 0x22 to control (tristate data and set control to 0010)
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12. Wait for bit 5 of status port to become 0
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13. Go to step 1
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "misc/archive.h"
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#include "misc/file.h"
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#include "misc/parallel.h"
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#include "ucon64.h"
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#include "ucon64_misc.h"
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#include "backup/mccl.h"
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#ifdef USE_PARALLEL
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static st_ucon64_obj_t mccl_obj[] =
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{
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{UCON64_GB, WF_DEFAULT | WF_STOP | WF_NO_ROM}
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};
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#endif
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const st_getopt2_t mccl_usage[] =
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{
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{
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NULL, 0, 0, 0,
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NULL, "Mad Catz Camera Link (Game Boy Camera)"/*"XXXX Mad Catz Inc. http://www.madcatz.com"*/,
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NULL
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},
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#ifdef USE_PARALLEL
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{
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"xmccl", 0, 0, UCON64_XMCCL,
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NULL, "receives from Mad Catz Camera Link; " OPTION_LONG_S "port=PORT",
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&mccl_obj[0]
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},
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#endif
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{NULL, 0, 0, 0, NULL, NULL, NULL}
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};
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#ifdef USE_PARALLEL
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#define DATA ((unsigned short) (parport + PARPORT_DATA))
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#define STATUS ((unsigned short) (parport + PARPORT_STATUS))
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#define CONTROL ((unsigned short) (parport + PARPORT_CONTROL))
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int
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mccl_read (const char *filename, unsigned int parport)
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{
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unsigned char buffer[0x1760], inbyte;
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char dest_name[FILENAME_MAX];
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int count = 0;
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time_t starttime;
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parport_print_info ();
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puts ("Resetting device");
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do
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{
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outportb (CONTROL, 0x24);
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while ((inportb (STATUS) & 0x20) == 0)
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;
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}
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while ((inportw (DATA) & 0xf) != 4);
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outportb (CONTROL, 0x22);
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while ((inportb (STATUS) & 0x20) != 0)
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;
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outportb (CONTROL, 0x26);
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printf ("Receive: %d Bytes (%.4f Mb)\n\n", 0x1760, (float) 0x1760 / MBIT);
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starttime = time (NULL);
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do
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{
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outportb (CONTROL, 0x26);
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while ((inportb (STATUS) & 0x20) == 0)
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;
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inbyte = (unsigned char) (inportw (DATA) & 0xf);
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outportb (CONTROL, 0x22);
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while ((inportb (STATUS) & 0x20) != 0)
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;
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outportb (CONTROL, 0x26);
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while ((inportb (STATUS) & 0x20) == 0)
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;
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inbyte |= (unsigned char) ((inportw (DATA) & 0xf) << 4);
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outportb (CONTROL, 0x22);
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while ((inportb (STATUS) & 0x20) != 0)
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;
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buffer[count++] = inbyte;
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if ((count & 0x1f) == 0)
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ucon64_gauge (starttime, count, 0x1760);
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}
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while (count < 0x1760);
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strcpy (dest_name, filename);
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ucon64_file_handler (dest_name, NULL, 0);
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ucon64_fwrite (buffer, 0, count, dest_name, "wb");
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printf (ucon64_msg[WROTE], dest_name);
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return 0;
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}
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#endif // USE_PARALLEL
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