PDP-11/23 deskside machine

From: allisonp_at_world.std.com <(allisonp_at_world.std.com)>
Date: Fri Mar 24 07:50:28 2000

> Doesn't sound like a huge amount of ram to me as my Data General Mini has
> 8mb onboard. Now that is a BIG ram card!

I can't speak for that as it may be a 32bit machine. PdP-11s are limited
to 4mb (22bit) and are 16bit machine with memory management to get that
extended address.

> Does RT11 have:
>
> Virtual Memory?

Not really though there is a virtual disk VM: that is useable as ramdisk.
I does swapping.

> Networking?

Yes depending on version.

> How do I run it? I can do dirs and type files etc but I really need some
> docs on the operating system to get anywhere with it. Thanks for the
> reply! --

RT-11 is a 16 bit real time OS and falls in the small OS bracket. that
doesn't mean it's simple or lacks capability on that if you need a mor
sophisticated OS for timesharing and multipprogramming there are otehrs in
the (THEN) DEC l;ine up including RSX-11 and RSTS-11. The minima for
running RT-11 is some 16kB of ram and some media (tape, disk, rom) to boot
from and the version running will often require a standard console port
unless specifically built out. RT-11 has several standard versions:

        RT11-SJ A single job monitor and small
        RT11-B Batch monitor also quite small for batched jobs
        RT11-FB A version that runs jobs in both forground and background
        RT11-XM XM is an extended monitor for extended memory systems
                and multiterminal/job applications.

Those were brief to the point of pain.

Utilities are such that most people used to PC- DOS will find most
familiar mostly. A bootable system could have a wide range of
configurations tha smallest of which easily fits on a 256kb floppy.

Allison
Received on Fri Mar 24 2000 - 07:50:28 GMT