[COFF] Supervisor mode on ye olde PDP-11

Dave Horsfall dave at horsfall.org
Wed Jun 19 16:49:03 AEST 2024


Sort of between kernel and user mode, Unix [zillion trademarks etc] never 
used it. but did RSX-11?

I used the latter long enough to hate it until Edition 5 arrived at UNSW, 
and I still remember being blown away by the fact that there was nothing 
privileged about the Shell :-)

-- Dave


More information about the COFF mailing list