What do the LEDs show, btw? It would perhaps seem as if your machine isn't really coming up. Memory could be the problem, I don't know... But an error code on the LEDs would be interesting.
From earlier:When I turn it on, I get all eight LEDs on at the same time for a half a second, then I get 7, 6, 5, 4, and 1, then nothing (happens). I get nothing on the serial console. If I press the halt button, the LEDs change to 7, 6, 5, 4, 3, 1, and 0. These codes aren't specifically mentioned in the DEC Service Information manual for the 4000/90.
SPeaking of which... I'd like to get my hands on such a cable as well. Anyone know where to buy them?
Here's one seller: http://cgi.ebay.com/IBM-58F2903-3W3-ADAPTER-3-BNC-RGB-VIDEO-CABLE-/380112073358?pt=LH_DefaultDomain_0&hash=item588071f28e#ht_500wt_911
I don't even know what the specs on the keyboard are...Normal LK201 or whatever, I believe. Any DEC keyboard with a 4-pin modular phone connector.
What I mean is that I don't know if that's an IBM AT or PS/2 type interface which can be used via a PIC translator or something like that, or something different. But now that you tell me that an LK201 will work, I see this:
http://www.netbsd.org/docs/Hardware/Machines/DEC/lk201.html Hmmm... Maybe I'll get one as a present... John