23 Sep
1999
23 Sep
'99
10:48 p.m.
On Sep 23, 23:17, Allison J Parent wrote:
Subject: Re: PDP 11/70s For Sale
<Which series is most compact (sized for desktop or tower style) pdp
An 11/53 thats a 11/23 cpu in a BA23 box. About 6Wx28Hx30D and an easy
110v outlet. With a RD52(30mb) and a RX50 floppy you can run most any
PDP11 OS including unix (starting with 2.9 or 2.11).
No, an 11/53 isn't an 11/23, it uses a J-11 on a board which also includes
the RAM (typically 1.5MB) and its performance is more like an 11/73 than an
11/23. You'd need BSD 2.11 to have any hope of MSCP support for RDxx or
RX50.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
24 Sep
24 Sep
3:46 a.m.
No, an 11/53 isn't an 11/23, it uses a J-11 on a
board which also includes
the RAM (typically 1.5MB) and its performance is more like an 11/73 than an
11/23. You'd need BSD 2.11 to have any hope of MSCP support for RDxx or
RX50.
Didn't check the MicroPDP-11 book on this one. All the 11/53 boxes I've
seen either had 11/23B or the earlier no ram-nonPMI 11/73 cpu in them.
Apparently that was a common configuration or the common path for the used
boxes. in any case most of the 11/23 or 11/73 cpus work quite nicely in
that box.
Allison
3:48 a.m.
On Fri, 24 Sep 1999, Pete Turnbull wrote:
the RAM (typically 1.5MB) and its performance is more
like an 11/73 than an
11/23. You'd need BSD 2.11 to have any hope of MSCP support for RDxx or
RX50.
Pete,
You forgot to tell him about PUPS! sheesh, even if you not into unix you
need to add that to your PDP-11 list of good information sources.
...I'm not home so I don't have the address. ;)
Allison
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