Dan's Pics at
http://www.decodesystems.com/old-ics.html
The first white mystery chip is General Instruments ROM. A while back someone
posted a link to an IC-IDentification database which I downloaded. It has
helped me identify some of these older chip logos.
The second mystery chip is an EPROM identical to the ones on a S50 card I
just sold on ebay.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=23…
Mine were labeled as AMD with an unusual part number. I will leave the pics
up for a while longer.
Now to go look at Dan's want page....
Paxton
Astoria, OR