[vcf-midatlantic] help dumping rom of rare coin-op arcade game

Herb Johnson hjohnson at retrotechnology.info
Fri Mar 17 14:48:11 EDT 2017

>  The CPU is a Signetics 2650 and the ROM
> looks to be a Signetics N82S115N (it's the only socketed chip on the board
> that I can see).

Google tells me 82S115 is a 512 X 8 TTL bipolar PROM, by finding 
datasheets. Most ordinary and old PROM programmers don't support that 
whole class of PROMs to program. But reading it is a different matter.


Build a reader. Or fake a common 5V EPROM and read THAT. It's doable. 
You're welcome.

Herbert R. Johnson, New Jersey in the USA
http://www.retrotechnology.com OR .net

More information about the vcf-midatlantic mailing list