On Thu, 23 Apr 1998, Ward Donald Griffiths III wrote:
> A TRS-80 Model 3 runs CP/M only with extensive modifications. The
> easiest such modification was the Model 4 upgrade several years
> later entailing a motherboard replacement (and no, you didn't get to
> keep the old parts).
Actually, the only requirement for the original motherboard was that the
service shop had to drill a hole through it. (Size may have been
specified, I don't know.) In any case, I have several M3 motherboards
with a hole drilled through a ground plane. (And still quite functional.)
> Ward Griffiths
ttyl
srw
Received on Fri Apr 24 1998 - 08:51:59 BST
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