vtserver
Steven M. Schultz
sms at moe.2bsd.com
Fri Oct 15 04:36:52 AEST 1999
Hi -
> From: Wilko Bulte <wilko at yedi.iaf.nl>
I will be doing some more research on this when I get home from
work tonight.
> I once had Ultrix-11 3.1 running on a dual RK05 11/34. What I'd call a
> very minimal system ;-) But it ran
That is because DEC put the extra effort into supporting non-split I/D
machines. The "stock" V7 really wanted a 11/70. In fact there was a
chapter in the back of one of the manuals/books detailing what it took
to get V7 running on an 11/40 (it was a non-trivial project).
Several things conspire against V7 and later on 11/34 (or 35, 40, 60,
etc). The two most notable ones are the limited address space,
everything (drivers, data structures, general kernel code) must fit
in 56kb instead of 120kb - (8kb reserved for the I/O page) and lack
of instruction restart on MMU faults.
I'll take a look at the V7 layout later but my memory is that it
wanted an 11/70.
Steven Schultz
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