PDP-12 Restoration at the RICM
cube1 at charter.net
Thu Dec 24 13:22:38 CST 2015
On 12/24/2015 9:59 AM, Michael Thompson wrote:
> We have been able to fix all types of broken flip-chips. Sourcing the
> components is sometimes a challenge. The Germanium transistors for the TU20
> on the PDP-9 were hard to find.
I remember replacing a germanium (at least I think it was) transistor on
an SMS card with an ordinary silicon transistor in a 7094-II floating
point unit back around 1974. Luckily, that worked fine, though for a
museum I imagine one would prefer to use the "real thing". ;)
>>> We found that the maintenance prints that came with the system do not
>>> include ECO EM12-0055.
>>> Does anyone have a set of KW12 prints that include ECO EM12-0055?
> The prints that came with this PDP-12 are here:
??? That document is not prints. I suspect you meant:
Which is the same revision as mine. (I see that the 1969 edition is
also there, but under the name PDP12-MaintVol3_SchemsMar69.pdf).
> Jay, we are interested in anything PDP-12 related that we don't have.
Eventually I expect I will, over the next few years, scan in everything
that is not already on bitsavers, but it looks like your current needs
have been met.
> The PDP-12 is described here:
> Details on the PDP-12 restoration process are here:
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