On 11/8/18 10:08 AM, Ethan via cctalk wrote:
The monitor works okay; slight burn in, but otherwise looks okay in
terms
of the phosphor. However, something seems to be wonky with the
horizontal
scan...the left edge is very wobbly.
Replace all electrolytic caps with new Panasonic of Nichicon 10
On 10/16/20 5:34 PM, Mark Matlock via cctech wrote:
I recently acquired an ADV11-D Qbus A/D board and having been working on a
RSX11M+ driver for it. It is similar enough to the ADV11-C that the driver I
wrote for the -C works ok, but the -D is DMA capable.
It seems to have two extra
Thanks, I had wondered if some the earlier ADV-11and AAV-11 boards were
just re-branded DTI boards. I have been hoping this is true for the -D
variants.
The most likely candidates are the DT2784/DT2782 and DT2771. Now if I
can just find manuals for these...
Jerry
On 10/17/20 2:06 AM, Pa
On 10/25/20 8:01 PM, Chris Zach via cctalk wrote:
.
Question: Can an RX02 boot an RX01 floppy formatted single density
with the DY: driver? Can it read an RX02 floppy in one drive and an
RX01 floppy in the other or do you have to set the switches and use
the right controller card (that wou
On 10/26/20 8:31 PM, Chris Zach via cctalk wrote:
Ok, so I'm now troubleshooting the memory parity errors in the MS11-L
memory. And yes, there are bit errors in the memory. I wrote a simple
program to check the first 64k bank and I've found errors in bit 2 but
not everywhere but on a predictabl
On 11/19/20 4:06 PM, Fred Cisin via cctalk wrote:
Long Island (NY) was pronounced Lawn-GUY-land
The current Long Island accent developed in the mid to late 80's.
Most of us living there before that had Bronx or Brooklyn accents...
I remember some of my friends would type on a ASR-3
On 1/24/21 11:27 AM, Chris Zach via cctalk wrote:
So I found an RXV21 board in the pile of stuff here and popped it into
my 83. Crashes the system. It's an M8029 D board, and I see from this
site that you have to add a few traces and cut a few others to make it
work on an 11/73 or better.
htt
On 1/24/21 8:11 PM, Chris Zach wrote:
Ok. My guess is it throws off the cache on the 11/73 and above as it
works in an 11/23 (which is soo slow!).
I looked at the images, cut the traces, then soldered in two of the
wires. Board did not work on either the 11/83 or the 11/23+ CPU.
However w
This is probably TSX V6.2 There are copies of this version here -
https://shop-pdp.net/~stuff/PDFs/TSX-Plus/
Jerry
On 3/29/21 9:04 PM, Chris Zach via cctalk wrote:
Also came across a TSX Plus reference guide and install guide, from
1985. These two fill a very large binder, have they alread
On 4/7/21 1:23 PM, Noel Chiappa via cctalk wrote:
.
(Interestingly, the Dilog card above claims to the RKV11 compatible; but also
says it has "memory addressing capability" to 256KB. They can't both be true,
though; although the RKV11-D has the A16/A18 bits in the CSR, they aren't
connected
On 4/8/21 4:48 PM, Noel Chiappa via cctalk wrote:
> From: Jerry Weiss
> I always wondered why the RKV11-D was only 16 bit addressable.
The manual (EK-RKV11-OP-001) says: "Since the 11/03 BUS structure has no
provision for extended addressing, no connection is made to the bus from
thes
On 5/7/21 8:45 PM, Zane Healy via cctalk wrote:
Strange question, does anyone happen to have the keyboard overlays for the
VAX/VMS version of Word Perfect that they can photograph, or better yet scan?
I have the manuals, and the green, red, and blue stickers on the VT keyboard,
but no overlay
On 9/26/21 4:04 PM, Alexander Jacocks via cctalk wrote:
On Sep 26, 2021, at 10:03 AM, Bill Degnan via cctalk
wrote:
I was either sacrifice a data drive to make it a backup of the primary or
find a like drive first, get the system stable and then upgrade. I have a
3000 too here if you want
On 9/30/21 8:12 AM, Paul Koning via cctalk wrote:
On Sep 30, 2021, at 1:02 AM, Nigel Williams
wrote:
On Thu, Sep 30, 2021 at 10:49 AM Paul Koning via cctalk
wrote:
I see that the PDP-11 architecture handbook doesn't seem to be on Bitsavers...
Do you mean this handbook?
http://wwcm.synolo
On 10/20/21 12:27 PM, Douglas Taylor via cctech wrote:
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
On 10/20/21 7:10 PM, Nigel Johnson Ham via cctalk wrote:
Thanks for that, but unfortunately it is crashing into ODT and not
accepting input from the console, which I remember was a symptom of no
bank 0 memory.
Now,of course, it could be the receiver chip in the J board (I used to
make a lot of m
DEC was were specific about the settings for SCSI mode that MicroVAX
3100 firmware and VAX/VMS would accept before enabling third party
drives in that era. Not all early drives that would accurately
do/report media recovery operations.
Suggest you look at this post and compare to the SCSI dr
The timekeeping chip used in the TCU-50 was leveraged from early digital
wrist watches.
This can be seen from the rather interesting method used to set the time.
My note in the DEC VCF forum might give you some more background.
https://forum.vcfed.org/index.php?threads/real-time-clock-card-gtsc306a-adding-calender.71542/
https://bitsavers.trailing-edge.com/pdf/gtsc/979-0021-306_GTSC306_Sep88.pdf
The DEC KWV-11 is designed to support analog and digital ac
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