[COFF] Supervisor mode on ye olde PDP-11
Warner Losh
imp at bsdimp.com
Wed Jun 19 17:48:54 AEST 2024
On Wed, Jun 19, 2024, 1:37 AM Dave Horsfall <dave at horsfall.org> wrote:
> Sort of between kernel and user mode, Unix [zillion trademarks etc] never
> used it. but did RSX-11?
>
2.11BSD used a mode between kernel and user for the TCP stack to get more
effective address space...
Warner
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
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.tuhs.org/pipermail/coff/attachments/20240619/a0ba6771/attachment-0001.htm>
More information about the COFF
mailing list