.
Doug
On 4/29/2022 4:11 PM, Kenneth Gober wrote:
On Wed, Apr 27, 2022 at 10:55 AM Douglas Taylor via cctech
wrote:
I wanted to extract some parts of the RT11 Freeware iso file that is
available on the internet. The note Tom Shoppa wrote indicates
that the
CD has 2 partitions. When
All;
I wanted to extract some parts of the RT11 Freeware iso file that is
available on the internet. The note Tom Shoppa wrote indicates that the
CD has 2 partitions. When I burned the CD on a windows machine I only
see one partition.
How to I extract the 2nd partition off the iso?
Doug
via cctech wrote:
Interesting, what kind of ESDI controllers do you have? They got
advanced features like cache, ordered seeks, and burst mode/block mode
DMA?
C
On 4/18/2022 6:09 PM, Douglas Taylor via cctech wrote:
Because of this I'm holding on to my DEC Qbus ESDI controllers!!!
You never
Because of this I'm holding on to my DEC Qbus ESDI controllers!!! You
never know
Doug
On 4/17/2022 4:35 PM, Guy Sotomayor via cctech wrote:
I chose ESDI and SMD fundamentally because the interface is 100%
digital (e.g. the data/clock separator is in the drive itself). So I
don't need to
On 10/19/2021 12:57 PM, Nigel Johnson Ham via cctech wrote:
I am trying to bring up an 11/23 system in a BA23 box, and the only
memory i have is an obscure Plessey one. The only identification is the
p/n 705920 with dash-100 in white ink. By counting the chips I make it
4MB, but it does not
On 8/28/2021 6:19 PM, Bill Gunshannon via cctech wrote:
On 8/28/21 4:13 PM, Douglas Taylor via cctalk wrote:
On 8/28/2021 1:15 PM, Bill Gunshannon via cctalk wrote:
On 8/28/21 1:03 PM, Douglas Taylor via cctalk wrote:
Yes, I did create a new kernel and copy it to the correct place and
chmod
, 2021, 3:50 PM Douglas Taylor via cctech
mailto:cctech@classiccmp.org>> wrote:
Right, according to the few notes I've seen on the packages currently
for sale on ebay.
I hesitate to buy because I picked up a similar piece of software,
Smarterm 240, which seemed to do the d
, Jun 18, 2021 at 1:15 PM Douglas Taylor via cctech
mailto:cctech@classiccmp.org>> wrote:
Does anyone have experience with the Reflection software that will
emulate a DEC VT340 color graphics terminal?
Does anyone have experience with the Reflection software that will
emulate a DEC VT340 color graphics terminal?
On 5/20/2021 10:01 PM, Randy Dawson via cctech wrote:
If anyone has ideas about boards or software to connect this original Compaq to
the net let me know!
Browsing the ebay, I do not find a PC 8 bit ethernet board but still looking.
Then, the rest, a net set of tools in source would be great.
The boot roms for the MXV11-B multifunction board can be used in the
MRV11-D general purpose ROM q-bus board. Neat if you want to put
together a small system.
I have a MRV11-C board and it differs from the MRV11-D board primarily
in the ROM sockets, 24 pin on the MRV11-C and 28 pin on the
All;
SMS made disk controller systems that used their own device driver,
seemed to be an enhanced DY (RX02) driver. Does anyone have the
driver/formatting software?
The model I have is FWD 0106 and is described in bitsavers:
On 8/26/2020 7:11 PM, Bill Gunshannon via cctech wrote:
Found a few other items that might be of interest to someone.
Two DEC Mice VS10X-EA Rev A3
DEC Joystick Model H3060
bill
Where did you see the H3060 Joystick?
Doug
Got similar interests here. I've been using PGPLOT on the Vax since it
came out, the price was right!
Tried to get it to work with a Tektronix 4207, but something is a little
different between it and the 4105 series.
I was able to get an old version of Gnuplot (3.4) to compile and run on
a Vax
On 8/12/2019 1:25 AM, Chuck Guzis via cctech wrote:
On 8/11/19 8:51 PM, Douglas Taylor via cctech wrote:
The TC02 is an Emulex TS11 emulation for pertec interface tape drives.
The J1 and J2 are sort of standard terminology, don't know why.
Ah, the *Emulex* TC02. You had me going there--DEC
On 8/11/2019 10:44 PM, Chuck Guzis via cctech wrote:
On 8/11/19 6:00 PM, Douglas Taylor via cctech wrote:
I just looked at the TC02 and the Qualstar, there are termination
resistor packs on each. The Qualstar has a bunch of 74LS240 IC's near
the J1 and J2 pertec interface cables. The TC02
On 8/11/2019 7:01 PM, Jon Elson via cctech wrote:
On 08/11/2019 11:11 AM, W2HX via cctech wrote:
I seem to remember they were ribbon cables
with each odd/even pair twisted which probably meant one
active and one ground twisted together.
Or differential pairs.
No, both Pertec unformatted and
On 8/10/2019 1:56 PM, Jon Elson wrote:
On 08/09/2019 11:05 PM, Douglas Taylor via cctech wrote:
I have a question about cable length - any electrical engineers in
the house?
Connected a Qualstar 1260 tape drive to an Emulex TC02 qbus tape
controller in a pdp-11/53. The interface is pertec
On 8/10/2019 4:57 AM, Dave Wade wrote:
-Original Message-
From: cctech On Behalf Of Douglas Taylor
via cctech
Sent: 10 August 2019 05:06
To: General Discussion: On-Topic Posts
Subject: Pertec Interface Cable Length
I have a question about cable length - any electrical engineers
I have a question about cable length - any electrical engineers in the
house?
Connected a Qualstar 1260 tape drive to an Emulex TC02 qbus tape
controller in a pdp-11/53. The interface is pertec with 2 50 pin cables.
When I use a pair of short flat ribbon cables, 18 and 30 inches each, it
The M7264 CPU thread reminded me of the collection of LSI-11 CPU's that
I have and want to get up and running. A very useful thread.
This may have been covered some time in the past, but, my question is
"What is the minimum load for the power supply in the BA11-M, -N and
BA23 boxes?"
Is it
I just got one of these and wanted to configure it via the 10 pin RS232
port on the board.
Is the port a standard DLV11-J type?
I have one of those D-bit DLV11-J to DB25 adapters but not getting any
response.
Any info on the few jumpers on the board?
Doug
Ethan;
I have owned both BA213 and BA215 microvaxes. The one recurring problem
I had was with the power supplies, H7868 I think the number is.
Luckily, I picked up a couple of Dec Serv 550's which gave me spares and
a PDP11/53 S box CPU.
I was able to run the PDP11 in one of the VAX based BA
Does anyone have a schematic for this DEC monitor? I have one that has
good video but doesn't seem to want to respond to video input.
On 2/1/2018 12:55 PM, Douglas Taylor via cctech wrote:
I'm getting an Alphaserver 1000a and wanted to install VMS 8.4 -
hobbyist license from CD.
So, I went to the folder on my PC where I have the 8.4 hobbyist
distribution. There are 3 ISO files; ALPHA084, ALPHA084LP1 and
ALPHA084LP2.
I
too, or just the jbod?
-Ben
Sent from my iPhone
On Feb 4, 2018, at 1:42 PM, Douglas Taylor via cctech <cctech@classiccmp.org>
wrote:
The alphaserver 1000a I have has a storageworks array.
The disk carriers are green in color, I see storageworks disks for sale on ebay
that are blue.
The alphaserver 1000a I have has a storageworks array.
The disk carriers are green in color, I see storageworks disks for sale
on ebay that are blue. What is the difference? Are they interchangeable?
Is it possible (or even wise) to open one of the green carriers and
change the disk out?
Thanks for helping me understand what this is.
My experience has been with Q-bus based Vaxes and this is very different
in that SCSI controllers for Q-bus are rare while in this Alpha machine
I've got too many!
You were right about the MIN boot, I went into SYSBOOT> SET STARTUP_P1
" "
On 2/1/2018 12:55 PM, Douglas Taylor via cctech wrote:
I'm getting an Alphaserver 1000a and wanted to install VMS 8.4 -
hobbyist license from CD.
So, I went to the folder on my PC where I have the 8.4 hobbyist
distribution. There are 3 ISO files; ALPHA084, ALPHA084LP1 and
ALPHA084LP2.
I
I'm getting an Alphaserver 1000a and wanted to install VMS 8.4 -
hobbyist license from CD.
So, I went to the folder on my PC where I have the 8.4 hobbyist
distribution. There are 3 ISO files; ALPHA084, ALPHA084LP1 and ALPHA084LP2.
I thought I would burn these to CD and up and away.
On 1/23/2018 7:58 PM, Jules Richardson via cctech wrote:
On 01/22/2018 02:05 PM, allison via cctech wrote:
On 1/22/18 2:18 PM, Douglas Taylor via cctech wrote:
I can't believe you 'just carry it into the house' all by yourself,
unless you are professional athlete.
I also have a MicroVax II
I can't believe you 'just carry it into the house' all by yourself,
unless you are professional athlete.
I also have a MicroVax II in the BA123 world box and it has wheels for a
reason! The damn thing weighs 130 lbs!
I took it to the VCF East last year, never do that again. Too heavy.
When I
On 11/18/2017 6:44 PM, william degnan wrote:
On Nov 18, 2017 4:09 PM, "Douglas Taylor via cctech"
<cctech@classiccmp.org <mailto:cctech@classiccmp.org>> wrote:
>
> I have a couple of vaxes that output 'unique' video, Alpha 3000 300,
Alpha 3000 400, Vax 4000 V
I have a couple of vaxes that output 'unique' video, Alpha 3000 300,
Alpha 3000 400, Vax 4000 VLC, and Vax Station 3100 M76.
The Alpha and VLC each have a 3W3 type of connector and the 3100 has a
15 pin DEC designed connector.
What does it take to connect these to inexpensive, modern VGA
On 9/11/2017 2:15 PM, Chuck Guzis via cctech wrote:
On 09/11/2017 08:47 AM, Camiel Vanderhoeven via cctalk wrote:
Now I¹m looking for some FORTRAN code that would typically have run
on this kind of computer so I can show people what this kind of
system was used for.
Congratulations!
I'd
I am bringing up a MicroVax III in a BA23 box and I intend to run it
from an SD card attached to a SCSI2SD adapter.
The SD card was setup to have the size of RA90 and RA82 drives using the
scsi2sd-util program on a Win7 computer to partition the 4GB SD card .
When I attached it to an Emulex
In my other post I asked about DEC 11/2 and 11/03 cpus and 18/22 bit
backplanes. I am still interested in this but I am considering what
type of disk to run from.
I ran into a rx02_emulator on github and looks quite interesting, since
it uses an actual DEC RXV21 interface it would be
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