[Simh] PDP-11 MARK

[Paul Koning]

> On Aug 2, 2018, at 4:25 PM, Bob Eager <rde at tavi.co.uk> wrote:
> 
> On Thu, 2 Aug 2018 22:00:05 +0200
> Rhialto <rhialto at falu.nl> wrote:
> 
> > Most overviews of the instruction set do not even explain what it
> > does. I only found it in the older ones, such as in the PDP 11-40
> > Processor Handbook (page 4-61, pdf page 107).
> 
> I remember considering using it when writing a compiler for the 11. In
> the end I decided it was more trouble than it was worth.

I came to the same conclusion when I was looking at it the other day, while working on the gcc back-end for pdp11.

	paul