[TUHS] A PDP-10 used for UNIX just after the PDP-7?

Al Kossow via TUHS tuhs at tuhs.org
Sat Jan 17 04:56:04 AEST 2026


On 1/16/26 10:00 AM, Noel Chiappa via TUHS wrote:

> Bob Supnik told us a bit about the KS-11: "The KS11 created a PDP-10 (KA)
> style memory management system for the 11/20: that is, high-segment
> (instructions, in theory, and shareable, in theory) and low-segment (data)."
> 
> No documentation on the KS11 has ever been located. There is KS11 emulation
> included in Bob's MIMIC PDP-11 simulator; in theory someone energetic could
> dig into that, and work out the details of how it works. More here:
> 
> 

I thought someone had the segmented kernel running in SIMH, which is why the
KS11 support was added.



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