MYSTERY BOARD....Need help to identify

tddlny

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Here is a good one. I need some help i.d.-ing this board. Has 22 contact connector. (sorry about the big pictures)
DSC02613.jpg


DSC02620.jpg


DSC02614.jpg


DSC02615.jpg



No identifiers on the eproms and nothing on the board anywhere except the R7-X and the Japanese sticker on the corner.

Thansk for looking
 
How in the world did you figure it out. I have looked at Idon't know how many different boards with no luck. You are the true master and I bow down to you. I will be listing it in the for sale section.

Thanks, MOD..

Well, one of your pics showed the sound chips as AY-3-8910's. So I went to MAWS and had it list all known boards with those sound chips (all 1490 of them). then I went through them one by one (only non-casino/trivia/mahjongg games between 1980-1989) checking for PCB pics, then comparing them to your pic. It would've gone faster if you had posted a pic of the processor for me to filter by also, but oh well...
 
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