10 Apr 2019

Knuckle Bash - Toaplan 1993 (repair log)

An other filthy board. But after a good bath in the garage sink it was much better:


Game booted with corrupted graphics, sound and controls were fine.





Since only part of the graphics were bad I thought of a ROM issue.
By having a quick look at the board layout I was sure graphic data were stored in the 4 big ROMs 3/4/5/6. I started by pulling ROM 5 to see if there was any change. There wasn't. Could I have found the issue so quickly?
Well, yes! Dump produced a file full of 0xff. I burnt a replacement in a 27C160 EPROM and graphics turned back to normal:




Game fixed.

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