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

[Johnny Billquist]

On 2016-01-06 01:54, Dave Horsfall <dave at horsfall.org> 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
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