9 Jan
2013
9 Jan
'13
10:47 a.m.
On 01/09/2013 07:42 AM, David Riley wrote:
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.
Nope...256KB or 128KW would be the max for a PDP-11 with 18-bit
addressing. RSX-11M can run with a good bit less than that.
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+?
Obviously, you also need an MMU.
Also not true. You can generate an unmapped system, which will run
without an MMU. (sorry!)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA