Sigh. Bringing up a PDP-8/M

From: Allison J Parent <allisonp_at_world.std.com>
Date: Tue Apr 13 21:54:10 1999

<boards? My strategy was this:
< 1.) Debug the chassis.
< 2.) Install components from a working 8/M.
< 3.) Replace componets from the working 8/M with questionable
< components.
< 3a.) If the replaced component failed: Fix it.
< 3b.) If the replaced component worked: Move to the next one.

This is a good plan. Pay attention to debug the chassis though as there
can be latent bugs like bad connectors.

<BTW, the "best" tool I've found for working on PDP-8s is the Radio Shack
<scope probe. Its more than fast enough to look at the signals. I suspect a
<Logic Dart would be better but I've not had enough funds for that toy yet.

For the PDP-8 any cheap logic probe will do if it can see 50nS pulses.
or you can make one with 7404, a oneshot (7412x) and three leds. the
oneshot is to strecth the fast ones to light a led.

Allison
Received on Tue Apr 13 1999 - 21:54:10 BST