ajp166 at bellatlantic.net
Mon Dec 12 20:17:36 CST 2005
>Subject: Re: PDP-11/73 booting!
> From: Pete Turnbull <pete at dunnington.plus.com>
> Date: Tue, 13 Dec 2005 00:10:56 +0000 (GMT)
> To: "General Discussion: On-Topic and Off-Topic Posts"<cctalk at classiccmp.org>
>On Dec 12 2005, 18:01, Allison wrote:
>> uVAX-II and 11/73B need/require over the top. 11/23B (and 11/73A)
>> is strictly Q22. I happen to have the earlier non-pmi 11/73.
>> And of course the uVAXII.
>11/73 doesn't need over-the-top and has no provision for it. As an
>11/73 it's supposed to be used with normal QBus memory, but all will
>work with PMI memory (a la 11/83, in fact they're the same board).
I did say 73B didn't I? There were two different J11 cards, I am using
the M8190 KDJ11-B which is Q22. However there is a later J11 that uses
the PMI memory. I have memory for that one but not the CPU.
I have every Qbus PDP-11 from the LSI-11/03 through the 11/73.
Here in the greater Maynard area we get to see more of the bits that DEC
sold. Then again I got the option during the great bleed to purchase my
underdesk systems for a token amount as we all left that facility. Many
others did as well.
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