On Fri, Sep 17, 2021 at 12:04 PM Roland via TUHS <tuhs@minnie.tuhs.org>
wrote:

>
> There is a KT11B paging option that makes the PDP11/20 a 18 bit machine.
> It looks a bit like the TC11 DECtape controller. I've got the schematics
> from the internet. But I have no idea how it compares to the later MMU
> units from the software perspective.
>
Love to see them and if you know where you found them.


> The V1 work was for a PDP-7 and is before the first 11/20 was secured.
> The point is that I think there is a hole in the the SW we have.
>
I just looked again at what Warren has -- it is the 11/20 assembler code
that Dennis scanned.  I have forgotten that we still had that.   I wonder
if it had the KS-11 stuff in it.   I'll have to peek
ᐧ