Busted EPROMs certainly would fit the symptoms.  What EPROM does a MicroVAX 3100 use, and does simh have the requisite binary image?  I've got a ROM burner....

On Tue, Sep 17, 2019 at 7:28 AM Clem Cole <clemc@ccc.com> wrote:
+1
ᐧ

On Mon, Sep 16, 2019 at 10:52 PM Adam Thornton <athornton@gmail.com> wrote:

I start v7 Unix and play "Hunt The Wumpus".

(I finally got it put together this weekend, and fixed the last couple dodgy joints tonight).

Adam