[vcf-midatlantic] PDP-11 topics again.
mcguire at neurotica.com
Tue Mar 15 17:07:02 UTC 2022
On 3/15/22 12:46, Dave Shevett wrote:
> Hahhahahah. FUNNY BIT HERE.
> check this out. someone sent me these because they just had them lying around
> They're literally decoration on my wall. They're 11/03's. What are
> the chances of these working? :)
Wow, very early-rev 11/03s. The RAM on those boards might have
issues, in particular. But you should be able to get to ODT at least.
> Here's the other problem. The console on the /73 is on the mainboard.
> I have a pair of DLV11J's I could use - same pinning, but I'd need to
> identify the console somehow. Hmmmmm. (googles a bit) Ahhh, the
> DLV11J can be jumpered to say I AM THE CONSOLE.
Yup, that's probably the most common configuration for a DLV11-J.
> I think I've found my project for tonight.
> Dave, thanks for the info on the 11/03 - I was almost sure the Qbus
> CPUs were all switchable, but thanks for the validation.
Well I've never run an 11/03 CPU in a BA23 myself, but I see no
reason why it wouldn't work. I remember something about the run signal
being in the right place, but that'd just affect the run LED on the
> For some
> reason I was lumping in an 11/05 which didn't make any sense
> whatsoever. And yeah, that machine Im' probably went to some poor
> slob who I'm sure never did anything with it.
> We never got it past
> like instruction 8 in the bootstrap.
I could've sworn that you and (who was it?) had it booting RT-11 from
an RK05 at your old place in New Hope, spread out on a big door being
used as a table I think.
Dave McGuire, AK4HZ
New Kensington, PA
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