test-drb

test-drb@ccmp.vtda.org

101090 discussions

by retrojoe＠stateoftheark.ca

Hi All. I've recently come into a really nice VT-320 terminal, but am having a hell of a time getting it to communicate with the outside world (mainly my PiDP-8 and PiDP-11). I've gone to the lowest common denominator, using a USB serial cable and terminal software to verify everything is working before digging into making simh output to a serial terminal. The VT320 only has the DEC-423 MMJ, no RS-232. I found a number of guides that show how to wire up the DEC-423 connector to a DB-9 RS-232, but so far I have struck out. It will receive text from the remote computer, but I do not see anything on the remote when I type on the VT-320. I have loop backed the TX to RX on the VT-320 terminal, and it does work. TX=RX Baud rate? in the VT320 settings, and the data bits, parity, & stop bits match. DEC-423 (lock tab bottom right, pin one on the left, 6 on the right) 1??? DTR 2??? TXD 3??? TXD- 4??? RXD- 5??? RXD 6??? DSR For a cross over cable: 423 #2 goes to DB9 #2 (TX to RX) 423 #3 & #4 to DB9 #5 (TXD- and RXD- to GND) 423 #5 goes to DB9 #3 (RX to TX) 423 #1 to DB9 #6 (DTR to DSR) 423 #6 to DB9 #4 (DSR to DTR) Does this look like it should work? It does leave DB9 RTS and CTS unconnected. Thanks!

5 years, 2 months

Floppy pressure pad replacement?

by mattislind＠gmail.com

Does anyone have some good hints on what and how to replace them? I have a CDC 8 inch floppy drive with a missing pressure pad. Tried to put some half a millimeter felt cloth with some double adhesive tape to replace it. But it didn't work very well. If I gently pushed the upper pressure pad arm it started to read at least. But it looks like it is possible to over-do it. I added more padding and then it probably got too thick since it now failed again. I guess that if there is a bit too much pressure the signal might be too high in the input amplifier leading to distortion? What is the best pressure pad material and what are you usually replacing it with? /Mattis

5 years, 2 months

Microvax 3100 VMS 7.3 password reset

by dick.curtis＠ymail.com

> I picked up a microvax 3100 this past weekend from a office that was > shutting down. >> I was able to start the system up, it boots up to a login prompt for VMS > VAX 7.3. >> I do not have any login info for this machine, is there a procedure i can > follow to reset a password to an account? I beg to differ with HP's recommendation (in their doc set) for Devin'ssituation.? HP's description is meant for customer sites to have a copyof usernames/passwords to which they can revert for nasty situationssuch as a corrupted SYSUAF.DAT.? *If* this system has the 'alternate'file, it should have the same problem as the original, of unknownpasswords.? What Devin needs is instructions to break into the system. I happen to know how to do that (used to work in OpenVMS Engineering).Is that something that should be discussed here? Thanks,Dick

5 years, 2 months

Soldering DB connectors

by rsmilward＠frontier.com

Something that's always worked for me: when soldering a male DB connector (DB9, DB25, whatever -- or really any male/pin style connector), plug it into a mating female connector first. That will hold the pins securely in place and prevent them from sagging in the plastic of the body if your soldering iron is too hot or you hold it on too long. -- **Richard

5 years, 2 months

Way off topic: posting to the list using default Samsung Android Mail Client

by cctalk＠ibm51xx.net

I am wondering if anyone else has tried using an Android Phone (a Note 10 in my case) with the default Samsung email client to post to this list? Whenever I post, even though the message is correctly formatted on my device, all the CR/LF are removed from my messages. See below for an example: ------- > Can it still be registered?>Is the Author find able? Do he still have 8" floppies? > *** Will it NOT be lost in the mail with COVID 19 ***A deep googlefu might find the author... just saying...;) ------- However, when I sent it, it looked like this: > Can it still be registered? >Is the Author find able? Do he still have 8" floppies? > *** Will it NOT be lost in the mail with COVID 19 *** A deep googlefu might find the author... just saying...;) Sending from trusty old Outlook 2007 on Win 7 works fine with the list and emailing people back directly from the phone seems to work fine as well. It is only when I am replying to the list that the issue occurs. Any ideas/suggestions? TIA! -Ali

5 years, 2 months

Microvax 3100 VMS 7.3 password reset.

by lyokoboy0＠gmail.com

I picked up a microvax 3100 this past weekend from a office that was shutting down. I was able to start the system up, it boots up to a login prompt for VMS VAX 7.3. I do not have any login info for this machine, is there a procedure i can follow to reset a password to an account? Image of system : https://i.postimg.cc/43bG0nSx/20201111-090018.jpg

5 years, 2 months

Looking for PDP-11/23+ parts for museum restoration

by stephenbuck＠mac.com

Hi All, I'm working on restoring a DEC PDP-11/23+ for the University of Colorado computer museum and I'm struggling to find a few parts, working or not, needed to complete the system. Please let me know if you have any of these items and would be willing to donate or sell them. You can see a blog I'm keeping of the restoration at?https://headspinlabs.wordpress.com/dec-pdp-11 When finished, it will be on display at?https://mediaarchaeologylab.com/visit Thanks, Steve

5 years, 2 months

Looking for a boot disk or software...

by geneb＠deltasoft.com

...for a Northern Telcom (Telecom?) Spectron Datascope 4000: https://i.imgur.com/qb4VTpO.jpg Fingers crossed that someone here knows where it can be had. Thanks! g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

5 years, 2 months

Wanted: PDP-8/f or m (with or without cards)

by mosst＠SDF.ORG

Hi All, I'm looking for a PDP-8/f or m. At a minimum I'd like the chassis with PSU, front panel, and backplane as I already have enough spare OMNIBUS boards to build up a basic system, although I'd still be interested in the boards if you have any. Depending on the configuration and condition there's a few things I'd consider trading, namely my PDP-11/34a, AlphaStation DS10, Intel MDS 231, and KIM-1. If the price it right I'd be happy to buy it too. I'm in the UK but would be prepared to ship some of the systems internationally; I can build crates and such. Regards, -Tom mosst at sdf.org SDF Public Access UNIX System - https://sdf.org

5 years, 2 months

Syquest druve owner in 541 area code? (Usa)

by jfoust＠threedee.com

At 08:17 PM 11/8/2020, Bill Degnan via cctalk wrote: > Thus came into my site, if you can help contact me privatelthanks >... > I have an old Syquest 5.25" removable cartridge (44MB) and am >trying to find a service that will get the graphics data off the cartridge >for me. If you have any suggestions I'd LOVE to hear them. It seems >impossible to find anyone with a functioning drive to read this thing. I was thinking about firing up the old (late 80s?) drive I have in storage and trying to image the carts I have. What should I watch for? Any typical failure mode? - John

5 years, 2 months

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