EPROM replacement and other helpful hints, was Re: IMSAI EPROMS

On Sat, 9 Jun 2001 23:05:59 +0100 (BST), Tony Duell wrote: #> #> Tony Duell wrote: #> > #> > 2764s are available everywhere and are cheap. And _every_ modern #> > programmer can handle them (I've seen a few programmers that can #> > handle nothing smaller than the 2764). #> #> Heh heh. Don't we all collect classic programmers as well? # #Well, _I_ certainly do, but then I'm not the person who can't program #2708s :-). I think at least one my programmers can manage those, and #maybe even the 2704 (512*8, otherwise similar to the 2708). # #However, even though I can program them, blank 2708s are getting hard to #find over here, so it's nice to have a way to use easy-to-get cheap parts. # #-tony Tony's suggestion that older eproms can be replaced by a 2764 on a daughterboard is certainly helpful information, like many of Tony's suggestions. While I am sure the circuit is "trivial", some of us are electronics novices, and no circuit is trivial. If I might suggest, it would be extremely helpful if Tony's hints, and those of others, could be posted to a web site in the form of schematics or diagrams. For those of us who are electronically impaired, that would be a tremendous asset. Thanks, Louis