At 10:09 19/06/2005 -0400, you wrote: Rich, After sending you the SMC datasheet this morning, I dug a bit deeper and found the actual AY-5-2376 data sheet. I can confirm that this is the same pinout as the SMC device, and appears to be compatible. I see that Michael H. has posted a more complete SMC datasheet - that should give you everything you need, however if you wish, I can scan the AY-5-2376 datasheet for you. Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html