Steven M. Schultz
sms at moe.2bsd.com
Mon Aug 11 13:53:16 AEST 1997
Warren, Mark -
> In article by Mark D. Roth:
> > I have a PDP-11/03-L at home that I rescued from Bell+Howell Corp and
> > know next to nothing about. I'm looking for any info I might be able
> I don't think you'll get Unix running on an /03, I just searched thru the
> paper archives here and I've seen references to /23's, /34's, 40's on up,
> but not for /03's. I'd suspect that the /03 doesn't have the memory management
> (nor the memory) to get Unix running.
Warren - you're absolutely right. The 11/03 has a maximum memory
(most were not fully populated) of 56kbytes and _no_ memory
management. Any Unix (since the initial one on the PDP-7) requires
at least two memory management states: kernel and user. Much later
versions can take advantage of the 3rd mode (supervisor).
Smallest machine I ever ran Unix on was an 11/23 (the development
was done on a 11/70 because various programs were too large to run
on a non split I/D machine such as the 11/23) and it was, shall we
say, "interesting". Just enough memory (max of 248kb) to run one or
two user processes at a time (we had a rather large kernel and some
homebrew communications drivers) - you could get logged in and then
each time you typed a command the shell would get swapped out to run
your command ;).
> Mark, I'll add you to the list, and bounce this there as well; someone
> with more knowledge of -11 hardware should be able to set us both straight
> with regards to 11/03's.
You got it right - nothing to set straight.
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