> On Aug 21, 2016, at 11:36 PM, Ethan Dicks wrote:
>
> ...
> Second, many/most of the CPU modules are -YA variants, and the "PDP-11
> Field Guide" mentions that they would be part of a KH11-A. About the
> only description I can find for what that is, is a single mention (in
> PDP-11_Peripherals
On Mon, Aug 22, 2016 at 8:49 AM, Noel Chiappa wrote:
> > I recall reading _somewhere_ about some early PDP-11 memory management
> > thing used on early PDP-11 Unix that supported the KE11 ... by having a
> > small window that allowed user code access to the KE11. ...
> > Does this
On Mon, Aug 22, 2016 at 8:16 AM, Noel Chiappa wrote:
> > From: Ethan Dicks
> > Second, many/most of the CPU modules are -YA variants, and the "PDP-11
> > Field Guide" mentions that they would be part of a KH11-A.
>
> I've been told that it's a revision to the CPU timings to reduce NPR
> I recall reading _somewhere_ about some early PDP-11 memory management
> thing used on early PDP-11 Unix that supported the KE11 ... by having a
> small window that allowed user code access to the KE11. ...
> Does this ring any bells for anyone?
Never mind - found it, it was in "
> From: Ethan Dicks
> Second, many/most of the CPU modules are -YA variants, and the "PDP-11
> Field Guide" mentions that they would be part of a KH11-A. About the
> only description I can find for what that is, is a single mention ..
> of the "large-system capability option" r
Hi Ethan,
I've seen the M780s before, but its been a while.
The DT03 and DT07 are Unibus switiches.
I have several edited option/module lists I can look up boards for you.
Also a fellow list member just scanned a hardware spare parts list that
could have some relevant info in it. I'm sure he'll
On Sun, Aug 21, 2016 at 1:53 PM, Noel Chiappa wrote:
> http://gunkies.org/wiki/KA11_CPU
Interesting stuff on the KT11, but tangentally, I've been going over
my pile of parts (that I've described a few times over the years) from
an 11/20 I pulled from the dumpster at work 30 years ago. I finall
