<be happy to send you a box of assorted unreliable S-100 DRAM boards that <will keep you busy well into your retirement. A good example! Also their very design sloppyness may be significant as some were "of the time". <Maybe that's the primary philosophical divergence here: I consider few <obsolete machines to be inherently interesting, when there are so many <others that are merely _thought_ to be obsolete but are still utterly <useful given a current, robust OS. Or some already have a robust OS that works even if it's not the current vogue. Allison