[vcf-midatlantic] PDP-11 topics again.
shevett at pobox.com
Tue Mar 15 17:22:27 UTC 2022
The RK05 bootup was in fact on an 11/03, not the 11/05. And it was on
a door :). That machine had an RK05 and an RX01 IIRC. Had a VT52 as a
(Everyone else on the list I'm sure cares gobs about this :)
On Tue, Mar 15, 2022 at 1:07 PM Dave McGuire via vcf-midatlantic
<vcf-midatlantic at lists.vcfed.org> wrote:
> 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? :)
> > https://www.dropbox.com/s/aky83u4dbsouvfh/2022-03-15%2012.37.50.jpg?dl=0
> 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.
> > http://www.bitsavers.org/pdf/dec/qbus/EK-DLV1J-UG-001_DLV11-J_Users_Guide_Oct78.pdf
> Yup, that's probably the most common configuration for a DLV11-J.
> > I think I've found my project for tonight.
> Yes. :)
> > 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
> front panel.
> > 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.
> Damn. :-(
> > 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
shevett at pobox.com
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