Re: [TUHS] PDP-11 MARK (was: Early Unix function calls: expensive?) - TUHS

6 Jan 2016

On 2016-01-06 01:54, Dave Horsfall &lt;dave(a)horsfall.org&gt; wrote:
...
   On Mon, 4 Jan 2016, Ronald Natalie wrote:
  >Just never figured out how to make good use
of the MARK instruction on
 >the PDP-11. 
 RSX-11 probably used it, though, as could've RSTS... 
Nope. Nothing in RSX uses it. As others said, probably nothing anywhere 
used it.
And, as I pointed out, if you use MARK, then you cannot really use split 
I/D-space, since the stack (data) needs to be in instruction space.

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt(a)softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol