DEC Professional 350 help

[Alexis]

> What you need is the field maintenance printset for the PDP11/23 or
> PDP11/24 CPU board. I don't have either, alas, are they on-line 
> anywhere?

Bitsavers.org to the rescue!

http://bitsavers.org/pdf/dec/pdp11/1124/

> The video from the Profesional (and indeed from the 'Bow and Decmates) 
> is
> stnadard RS-170 TV-rate composite video. If you have the colour card
> fitted, it's sync-on-green RS-170 timings (that is, the green signal 
> is a
> RS-170 composite signal, the red and blue signals are video only, no
> syncs). I would have thought you could find something to display that.

Ethan Dicks has suggested that a composite monitor will do. I've got a 
Commodore Amiga monitor here with SCART, I'll wire it up to that. It 
works at 60Hz (I'm in Australia - 50Hz PAL). Thanks for the tip too, 
Ethan.

Looking at the schematics and descriptions for the F-11 CPU, it is 
*very* tricky. A lot of the timings are handled externally. Still, it 
would be cool to prototype a F-11 board - but first I'll see if I can 
get the 350 humming.

Thanks!

Alexis.