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NeoGeo 4 Slot Error
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Question
schmake
Hi Guys, looking for some guidance here.
After updating my 4 slotter NeoGeo to Uni-Bios 2.3, the board has not been happy (must've liked the dust layer on it).
After a cold start you can usually play for around 15mins before getting an exeption error. Then it's all over, the machine will usually just boot up into an exception error pretty much straight up. That is either from a soft reset on the uni-bios or powercycling. The bios is not the problem as if I put the original bios back in it begins a continuous reboot cycle.
If I remove the top board, and start it cold it will boot to the test pattern and can easily navigate all options. I left it sitting like so for hours and didn't get any exception errors.
I've attached some pics of some of the errors that I've been getting. I don't have a logic probe on hand, but could get access to one for a check of chips... but I'm not sure what to check :unsure
Any help would be much appreciated
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