1 Oct
2003
1 Oct
'03
8:33 a.m.
On Oct 1, 11:43, Brian Hechinger wrote:
On Wed, Oct 01, 2003 at 10:16:13AM -0600, Kevin Handy
wrote:
or
The CPU card should be almost identical to an 11/83 system.
Main difference is the speed of the clock, iirc.
uhm, i thought a /73 was a dual width card and didn't have any serial anything on it. am i confused?
Yes and no. There is a dual-height version of the 11/73 (KDJ11-A)
which carries the processor, MMU, FPA, cache control, etc, but no
bootstrap, SLUs, or line-tme clock. It was commonly sold as an OEM
product or as an upgrade to 11/23 systems. There is also quad-height
version (KDJ11-B), the same board as as the 11/83, but (if sold as an
11/73) it has a 15MHz crystal instead of 18MHz, and would originally
have had different bootstrap ROMs.
--
Pete Peter Turnbull
Network Manager
University of York
1 Oct
1 Oct
12:32 p.m.
On Wed, 2003-10-01 at 16:33, Pete Turnbull wrote:
On Oct 1, 11:43, Brian Hechinger wrote:
And this is the one that is installed in the Bomem Interferometer.
Dual-height card, no SLU or bootstrap. The console is from a custom
Bomem card that wants an EGA monitor and standard PC (old style 5 pin
round connector) instead of a serial terminal for the console.
It is really pretty useless for me, since the EGA monitors all appear to
be toast and I wouldn't be able to use VTServer through the custom EGA
thing.
Interestingly, though, is the fact that this custom card also interfaces
into a very large board that I believe is a vector processor.
--
Christopher McNabb <cmcnabb(a)4mcnabb.net>
The McNabb Family
uhm, i thought a /73 was a dual width card and
didn't have any serial
or
anything on it. am i confused?
Yes and no. There is a dual-height version of the 11/73 (KDJ11-A)
which carries the processor, MMU, FPA, cache control, etc, but no
bootstrap, SLUs, or line-tme clock. It was commonly sold as an OEM
product or as an upgrade to 11/23 systems. 
7 Oct
7 Oct
1:48 p.m.
On Wed, Oct 01, 2003 at 08:24:08PM -0400, Christopher McNabb wrote:
It is really pretty useless for me, since the EGA monitors all appear to
be toast and I wouldn't be able to use VTServer through the custom EGA
thing.
pull the EGA thingie, and you might be able to cram enough "regular" PDP-11
bits into it to get it bootstraping correctly and most importantly trying to
use a serial port for console.
the /73 is a fabulous machine, don't give up on it too quickly. :)
Interestingly, though, is the fact that this custom
card also interfaces
into a very large board that I believe is a vector processor.
ooooohhhh, i would be VERY interested to know what that is and if there were
a way that we could play with it. :)
-brian
--
"It's like a Koala bear crapped a rainbow in my brain."
-- Captain Murphy - Sealab 2021 -
2:10 p.m.
On 7 Oct 2003 at 21:48, Brian Hechinger wrote:
pull the EGA thingie, and you might be able to cram
enough "regular"
PDP-11 bits into it to get it bootstraping correctly and most
importantly trying to use a serial port for console.
Yesterday a co-conspira^H^H^H^H^H^H^H^Hworker of mine brought in an old
Princeton EGA/VGA monitor. After hooking up the monitor and re-seating a couple
of the cards the system seemed to boot ok, though I did notice that there appeared
to be some 'striction' in the old ST-506 drive ( and yes, I do still have the
"Fonzie"
touch :-D )
I'm thinking that I am going to pull the custom cards as soon as I get enough stuff to
get it to boot without them, since I REALLY want to run BSD211 on the thing. I'll
need a bigger hard drive also (any one got a couple of RD-54s and controllers to
donate?)
ooooohhhh, i would be VERY interested to know what
that is and if
there were a way that we could play with it. :)
I would too, but I think that idea is very doubtful since I have absolutlely zero docs
on the thing.
2:22 p.m.
I'm thinking that I am going to pull the custom
cards as soon as I get enough stuff to
get it to boot without them, since I REALLY want to run BSD211 on the thing. I'll
need a bigger hard drive also (any one got a couple of RD-54s and controllers to
donate?)
Do yourself a favor, don't mess with MFM disks if you can help it. The
cheapest solution is to get a ESDI controller and dig up some ESDI drives,
this should be far cheaper than getting even one RD54. In fact if you get
lucky, a SCSI controller is likely to be cheaper. Either solution will
generate less grey hair than trying to use an MFM drive.
Zane
1:49 p.m.
On Wed, Oct 01, 2003 at 09:33:07PM +0100, Pete Turnbull wrote:
Yes and no. There is a dual-height version of the 11/73 (KDJ11-A)
which carries the processor, MMU, FPA, cache control, etc, but no
bootstrap, SLUs, or line-tme clock. It was commonly sold as an OEM
product or as an upgrade to 11/23 systems. There is also quad-height
version (KDJ11-B), the same board as as the 11/83, but (if sold as an
11/73) it has a 15MHz crystal instead of 18MHz, and would originally
have had different bootstrap ROMs.
ahh, ok, that explains it. i am only familiar with the KDJ11-A, i've never
held a -B in my hands.
-brian
--
"It's like a Koala bear crapped a rainbow in my brain."
-- Captain Murphy - Sealab 2021 -
7747
days inactive
7753
days old
5 comments
4 participants
participants (4)
-
cmcnabb＠4mcnabb.net -
healyzh＠aracnet.com -
pete＠dunnington.u-net.com -
wonko＠4amlunch.net