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The Final Chesscard ROM
« on: November 5, 2009, 03:55PM »
forgive me if this is a completely inappropriate place to ask for something like this, but I'll try anyway.
I own a "The Final Chesscard" ISA chess card computer (i.e. the one for the PC), http://www.schach-computer.info/wiki/index.php/The_final_chesscard
Unfortunately the device does not work.
I have tried to scope it and verified that the CPU is executing instructions, the crystal runs at a perfect 5 MHz, I have checked every 7400-series part, resistor and replaced a possibly faulty capacitor, cleaned and polished the contact points, all to no avail. I have also tried numerous other things and tricks (heating the card, freezing it, taking out and re-inserting the EPROM), but the board will simply not work, it seems stuck in an infinite loop from what I can gather from scoping it.
I was wondering if anyone knows where I can obtain a ROM of the EPROM machine code for this card so that I can burn a new EPROM since it is obviously a faulty EPROM on my board -- as everything else is apparently working perfectly fine.
If anyone could please be so kind as to either send me a copy of the ROM file or provide me with a link, or tips as to how to obtain it, I would greatly appreciate it!
Just to make it clear, I'm not asking for the source code or to do something illegal, merely repair my own chess card. :-)
Thanks in advance!