11 Jan
2011
11 Jan
'11
7:48 p.m.
Charles Morris wrote:
Thanks to Pete Turnbull's FindCSR (entering it once
by hand was
enough) :) and reading another manufacturer's DHV11/16 documentation
dug up on Bitsavers, I now know my CSR.
Actually, two of them, 160140 and 160160, since I have learned that a
DHV11/16 appears to the 11/23+ as two DHV11 8-line cards with
consecutive address spaces modulo 20 octal.
Then I could run the various DHV11 diagnostics from my XXDP pack, and
the first time through on VDHAE0, it found the card but stopped on an
ILL INT 430 error. So I took the hint and entered 430 instead of the
default 300 for the vector interrupt address. Then Unit 1 passed the
tests, but Unit 2 had an ILL INT 440 error. Another clue :) With 440
for the 2nd vector it passed all tests.
Now to make sure it's not conflicting with my RLV12 controller, make a
cable for the user terminal, and start fumbling with TSGEN.MAC and
other TSX-Plus files!
All I need is a few VT100's and this will be 100% identical to the
system I used at my first EE job (in 1981) :)
As a software addict, I can appreciate your wish to have the identical
hardware that
you used back in 1981, especially when it probably cost over $ 20K.
I doubt that you will have a conflict with the RL02 controller. The
standards are:
CSR = 174400
VECTOR = 160
I also used a bit of TSX-Plus over the years. V6.50 is available to
hobby users and is Y2K
compliant. The RT-11 files from V05.07 which are Y2K compliant may be a
bit more
difficult to find.
If you want to run with V05.03 of RT-11 files under SIMH, you can
legally acquire and
use the RT-11 V04.00 binary distribution. V05.03 of RT-11 is also
legally allowed
to be used with SIMH. However, since V05.03 was released in 1985, you will
probably want to stay with V04.00 files from 1980.
If you ever find that you are cramped for space with 17 VT100 terminals
on your desk,
you can always switch to running under Ersatz-11. While it will only
easily support
12 VT100 terminals (you switch from one VT100 to the next with
<ALT/Fn>), it does
run about 200 times as fast as a PDP-11/23 on a core 2 duo of around 3.0
GHz,
especially if you have the 6 MB L2 cache version. And since 1 TB SATA2
drives
are now less than $ 100, you also find there is almost unlimited storage.
Right now I am working on enhancing a program that runs under RT-11,
TSX-Plus,
RSTS/E and RTEM-11. Ersatz-11 makes the debugging and production much
easier.
I support RT-11 (and sometimes TSX-Plus) systems for hobby users, so if
you have some
questions, please ask.
Jerome Fine