PDP-11/23 deskside machine

From: Jerome Fine <jhfine_at_idirect.com>
Date: Thu Mar 23 22:56:42 2000

>Technoid_at_cheta.net wrote:

> It is arrayed in several rows of 64kbit 16pin dips on the ram card and is
> definitely 512kbyte and is parity ram.

Jerome Fine replies:

If that is one board, it sounds like an M8067 board. If you have a BA23
box with 8 slots total and some are unused, than more M8067 memory is
basically free if you can find some.

> 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!

RT-11 does not need much memory. I don't have any experience with CTS300.

> Does RT11 have:
> Virtual Memory?
> Networking?
> 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! --

Virtual memory - yes! It grabs RAM if you have enough (which you do not)
and the VM.SYS device driver makes VM: look like a disk drive. If you had
4 MBytes of memory and used 2 MBytes for VM:, that would give you a device
of 4096 blocks.

For networking, you can use TCPIP.

Which version of RT-11? V5.0x will be displayed at boot. Or type the command
"SHOW CONFIG"
and that will do it after you boot. It may be off the screen - "CTRL/S" will stop the
display ("CTRL/Q" restarts the display) or NOSCROLL if you have that on your
keyboard will toggle that aspect for the display. DOCs are THREE feet of binders.

Sincerely yours,

Jerome Fine
Received on Thu Mar 23 2000 - 22:56:42 GMT