Results 1 to 1 of 1

Thread: Gaelco World Rally repair log

  1. #1
    Edo Express Delivery Guy
    Apocalypse's Avatar
    Join Date
    Sep 2015


    Gaelco World Rally repair log

    I got a faulty World Rally board from Rugdoctor.
    The game booted but had 2 issues:
    - RAM checksum error at address XXX (changes every time you power the board)
    - Coprocessor not ready (indicates the game has committed suicide)

    For the RAM error I first thought it was bad but discovered a cut trace. I patched it and the problem was fixed.

    Then I tried to un-suicide the game. I needed a RS232 to TTL converter and as my computer doesn't have a serial port anymore (I had it through the docking station but I got rid of it...) I went the USB to TTL converter route:

    The pinout on the World Rally board is as follow:
    - 1 (closest to the printed 0) = VCC
    - 2 = TXD
    - 3 = RXD
    - 4 = /PROG
    - 5 = GND
    You must bridge /PROG to GND on the board and connect only 3 wires to the TTL adapter (GND/TXD/RXD). Pinout may vary according to the adapter so just check yours.
    The port settings are 2400b/s, 8 data bits, no parity, 1 stop bit and XON/XOFF flux control.
    With hyperterminal (or any other serial communication software) send a carrier return. The game should answer "DS5002 LOADER VERSION 0.1..."
    Then send U, the game should answer "UNLOCKED".
    Send L, the game waits for a file to load.
    Copy and paste the following code:

    Quote Originally Posted by Gaelco
    File too big
    Can be found here:
    (Or you can do as I did: download the romset on Gaelco website and convert the wrdallas.bin file to hex).

    Transfer is quite long (between 5 and 10mn?).
    When finished type Z to lock the DS5002.

    Unfortunately it didn't work for me on first try. The cause was another broken trace. I fixed it and started the download procedure again and it worked!
    Another game saved.



    I forgot to mention I obviously replaced the battery.

    Added pics
    Last edited by Apocalypse; 05-18-2016 at 05:32 PM.
    Current SNK projects:
    - Samurai Spirits (Shodown) RPG English version for the NGCD:
    - AES to MVS converter (plays AES games on MVS):

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts