Classic computers endangered!

Ethan Dicks ethan.dicks at gmail.com
Mon Oct 5 15:26:00 CDT 2009


On Mon, Oct 5, 2009 at 3:51 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
>> Agreed for many parts of 1990s machines, but as for 1960s and 1970s
>> DEC machines in particular (the subject I know more about than
>> others), there are a few parts here and there that are getting
>> difficult to find without robbing them from other machines - Omnibus
>> buffers come to mind first, and certain parts from the -8/i and -8/L
>> era, like the 74H40 or the 7482...
>
> ...There are of course many work-arounds if you don;'t mind minor
> kludges -- one of the M-series boards in my RK11C has a dead-bugged
> 74LS83 (IIRC) replacing a dead 7482. Works fine. Things like that.

Since I have a small number of 74LS83s in my parts bins, I might have
to try that if I end up verifying that I have a dead 7482 on one of my
M220s (from an -8/L, in my case).

I think I've seen 74LS83s for sale somewhat recently (at Unicorn or
some similar place).

-ethan



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