PDP11 simh – notes

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Last updated: 1/6/2025

This is going to be q squirrel note (seemingly random) but in truth this is probably a start to talking about using SIMH and using PDP11.

There are a number of really cool sources which talks about this.

I own a physical PDP 8E. But I do not own a PDP11 at this time. I do have a whole host of papertape, Decpack, tape, and I even have core memory from a very old machine (I think it was an IBM teletype machine. It was very dated)

This post is another one of my works in progress. I will come back and revisit it. This subject could very well turn out to be a long list. Including discussing how to run AT&T Unix V5 and earlier version of BSD on PDP11 architecture.


Comnand;

show rk


response when no disk has been assigned to one of the 8 possible disk drives (0-7)

sim> show rk
RK      address=17777400-17777417, vector=220, BR5, 8 units
  RK0   1247KW, not attached, write enabled
  RK1   1247KW, not attached, write enabled
  RK2   1247KW, not attached, write enabled
  RK3   1247KW, not attached, write enabled
  RK4   1247KW, not attached, write enabled
  RK5   1247KW, not attached, write enabled
  RK6   1247KW, not attached, write enabled
  RK7   1247KW, not attached, write enabled
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