(Since this discussion has long ago gone off topic, I may as well continue.)
On 16 June 2016 at 11:00, Lennart Sorensen via talk <talk@gtalug.org> wrote: > Who built a computer that cared about AC frequency to drive the real > time clock? Never heard of anyone doing that. My first computer, a Poly-88 8080 based system, did (I still have it). <http://www.polymorphic-computers.com/poly88.html> The transformer used for the linear power supply was tapped, rectified and clamped to feed to an interrupt pin. The interrupt routine would increment a counter in RAM which was accessible for real time calculations. -- Scott --- Talk Mailing List talk@gtalug.org https://gtalug.org/mailman/listinfo/talk
