On Jan 8, 2013, at 16:50, Andriy Romanenko <bigral at hotmail.com> wrote:
Split I/D space support.
Hello, I wonder if RSX-11M+ can be used on processor without Split I/D space support? Is
there any feature that will became unavailable in this mode?
It'll run on an 11/23 with enough RAM, so yes. I don't know
particular features you lose other than the program size
advantage of split I/D, but others probably do.
But it do
require much more of the hardware.
It takes way more memory, and it requires certain features in the CPU,
that 11M do not.
11M can be run on basically any PDP-11, as long as you have atleast
about 56K of memory (Better with more, of course.)
What is the practical minimum for the machine to be able to use RSX-11M and RSX-11M+?
CPU-wise, I don't know, but you need a minimum of 512KB
(256KW) of RAM. Like I mentioned, it runs on an 11/23,
which has the EIS and 22-bit addressing. Obviously,
you also need an MMU.
- Dave