I have a NOS SPO256 in my parts bins. I think I'll use it as an annunciator for some future home control applicat= ion. I do wish I could copy the sample data from it, it would be nice to find a way to duplicate it using more modern means. I remember the first SPO256AL2 that I got.. and wired up to the parallell port of a TRS-80 Model 1 Level 2. Yes, it was a homemade parallell port as well. Suddenly I'm feeling really old.. On 6/27/12, Walter Banks wrote: > > > PICdude wrote: > >> Wow, I certainly remember that chip from waaaayyyy back. Awesome >> device. That also reminds me of the Votrax SC-01. >> >> I just found this... http://spatula-city.org/~im14u2c/sp0256-al2/ >> >> Cheers, >> -Neil. >> >> Quoting John Gardner : >> >> > Was'nt the SPO256 originally a General Instruments chip? >> > >> > Getting to be a long time ago... > > Part of General Instruments was bought by an investment group > that became Microchip. > > I have some GI parts that were NMOS versions of 1654. I used > one in the design of a bathroom scales we did about 30 years ago > > The Votrax core was potted in a some form of ceramic complete > with wires buried in the potting. It was remarkably good for its time. > > w.. > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .