>OK, hands up everyone who's done a real-time embedded app with an 8008! Never actually programmed one, but did get to handle equipment that used them, although it was obsolete and withdrawn from service by then. However before I got to that stage I did have occasion to deal with a data capture board that used the first 16 bit micro that National Semiconductor made (cannot recall its name, but it might have been the Pace), or actually it was a board that used the instruction set, but predated the micro itself. It had a pair of national Semiconductor EPROMs on it for the program, and they were very early technology, where the program leaked away after about 6 months. We had to reprogram every 6 months as they went AWOL, using a little box with switches to enter the data. Took about a day for 2 people to enter and verify a 256 word program this way, a job that no-one liked. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist