7 Jun
2001
7 Jun
'01
2:58 p.m.
From: Pete Turnbull <pete(a)dunnington.u-net.com>
like that. But a box labeled 11/53 and having an 11/23
procssor in it
is
an 11/23, not an 11/53. It won't run RSX-11M or
Ultrix configured for
an
11/53, or various things.
An 11/23 would run RSX-11 just not the I&D kernal, same for Ultrix
depending on version.
I'm surprised you say it's common. I can see
that in a few cases the
processor might be removed to use elsewhere, but how many systems end up
with a 5-years-older processor in them? In my experience, it's much
more
It was happening when the processors were NEW. Seems it made a very
compact fairly fast system if the DEC box was not used. However early on
getting the bare CPU was difficult so people bout 11/53s, snatched the
cpu
and resold them with commonly available 11/23s (as Micropdp-11s)
common to see systems with later processors in them
(though I'm thinking
of
11/03 -> 11/23, 11/23 -> 11/73, 11/73 ->
11/83, microVAX -> microVAX-II
upgrades).
Yep, like my 11T03 that has a BA11N and 11/73 cpu or maybe my
microvax-ii
that was downgraded to a Micropdp-11. ;)
Allison