On 24/01/2008, at 11:35 AM, Tony Duell wrote:
Hi,
I've had a very dead DEC 350 in the shed for a while now and I've
just had a look at it, there are a lot of chips on it I can use.
But before I give everyone here a heart attack, is there any
chance of rescue? When I turn it on the 4 numbered LED's come on
immediately, as does the green DC light. Then nothing. Not a blip.
IIRC, the LEDs are turned on by a hardware reset, and then changed
in state by the processor. So all on implies that the processor
isn't running. Maybe it's being held in a reset state due to the
power OK line
from the PSU or something.
The reset line for the F-11 (just looked it up, it's not an LSI-11)
would be useful to know now. I'll continue looking.
But even then I don't have a proper monitor for it! I've got a 21"
RGB for my VAXstation 4000-60 but I doubt it'll handle the resolution
of the 350. I've got the video and keyboard cable for the 350
however. I won't try it until someone gives me the all clear.
If you have any sort of NTSC-rate TV or monitor, with a composite input,
you can use it to display the video from the Pro. It may overscan a
bit, and text isn't as clear as a VR201, but it still works fairly
well.
The pinout was covered a few years ago (a reply to my request for that
info, actually) here: