Microvax II hardware not recognized
elson at pico-systems.com
Fri Aug 19 20:14:15 CDT 2016
On 08/19/2016 12:36 PM, Douglas Taylor wrote:
> The MicroVax II is about 30 years old, should I suspect
> the backplane? How do you clean it? Should I try another
> CPU card?
My cobbled-together uVAX-II ran continuously from 1986 to
2007. Sometime in the late 1990s, it started to get flaky.
It was always backplane-related, devices would become
inaccessible, and powering down and reseating the boards
always brought it back. Every few years, I would pull all
the boards and vacuum the board side of the backplanes and
wipe down the board edge fingers with an alcohol-soaked
paper towel. The reseating would always clear the trouble
for several months.
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