These parts aren't PAL chips FOR a specific application. They're about 10-year-old electrically eraseable and reprogrammable GAL (generic arraly logic) parts, intended to become lower-cost replacements for the bipolar PALs. In the latter purpose they have been quite successful, in that I seldom even see a bipolar part in boards less than 15 years old. The advantage, of course, is that these have a more flexible architecture and variable macrocell design than the original PALs, say, from MMI, had. Of course there are only a few of them that are asynchronous, and those, typically, are just copies of the 20RA10 in more current technology. Dick -----Original Message----- From: Jay West <jlwest(a)tseinc.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Monday, June 28, 1999 3:31 PM Subject: Re: chips a