3 Feb
2017
3 Feb
'17
9:17 p.m.
On Feb 3, 2017, at 4:07 PM, Josh Dersch <derschjo
at gmail.com> wrote:
On Fri, Feb 3, 2017 at 12:31 PM, Paul Koning <paulkoning at comcast.net> wrote:
What I meant is that the 11/40 has EIS standard, according to the PDP11 architecture
handbook. So an OS that depends on MMU would be designed for 11/40, 11/45, etc. all of
which have EIS. And since EIS instructions are quite helpful they will be used. Not
necessarily MUL, in a kernel, but definitely SOB.
paul
I'm not sure there is one. DEC OS designers typically would assume that
they are dealing with non-broken systems. Systems with MMU all have EIS...
Is this actually true? I've been working on getting my PDP-11/40 running
recently, and I don't recall anything in the documentation indicating that
an EIS was required if you had an MMU installed.