> On Aug 30, 2015, at 2:34 PM, Chuck Guzis <ccl...@sydex.com> wrote: > > ... > I have heard of machine-fabricated core as well, but I thought that it only > applied to larger, slower bulk core store. One can certainly understand why > plated-wire or thin-film technologies were attractive.
Perhaps CDC's ECS? 125k (funny number that) words per memory bank. > Sigh. Another lost manual art. I can remember during the 70s that the hot > thing was to learn IC layout--the wives of a number of co-workers were going > to night courses for that. I've never done that, though I have Carver Mead's textbook that describes how it is done. I did do a PC board layout with red and blue tape on a light table, in 1977. paul