26 Dec
2007
26 Dec
'07
3:20 p.m.
--- "Roy J. Tellason" <rtellason at verizon.net> wrote:
Thinking back on that stuff, wasn't it one of
those
machines that used some
rather odd memory parts for either the main RAM or
the video? The ones I'm
thinking of were half the normal capacity,
presumably chips that failed on
one side or the other but still had half a chip
usable. I'm vaguely
recalling something about how you had to match the
ones you had so that they
were all responding to the same addresses, either
"upper" or "lower",
something like that.
Uh not sure, but the IBM System 23/Datamaster has
redundant ram chippers.
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