test-drb

test-drb@ccmp.vtda.org

101090 discussions

by drb＠msu.edu

Folks, I've now seen two Burroughs tapes where some of the expected file marks between labels and file data were apparently missing. I think a reasonable description of these is "Burroughs/Unisys B6x00 'Library/Maintenance' tapes with ANSI-69 labels" Reading drive is a Cipher GCR Cachetape with SCSI interface The one I read yesterday read in streaming mode and reported no read errors. I tried re-reading it today, and it read in start-stop mode, but still didn't have the missing file marks. (It also encountered a few errors, and eventually ended up sticking to the head, this time. Guess that bake cycle was a one-shot, which isn't a surprise.) This tape is a "Burroughs Series 7 / 100% Tested / 3200 FCI" 1200 foot reel written at 1600 BPI in 1986. Here's the beginning of the tape: file 1 record 1 size 80 00000000: e5 d6 d3 f1 f0 f3 f6 f1 f3 f0 40 d7 d9 d6 c7 d9 VOL1036130 PROGR 00000010: c1 d4 40 40 40 40 40 40 40 40 40 40 f6 f5 f3 f0 AM 6530 00000020: f3 f0 f5 f0 f3 40 40 40 40 40 40 40 40 40 40 40 30503 00000030: 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 00000040: 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 f1 1 file 1 record 2 size 80 00000000: c8 c4 d9 f1 c6 c9 d3 c5 f0 f0 f0 40 40 40 40 40 HDR1FILE000 00000010: 40 40 40 40 40 d7 d9 d6 c7 d9 c1 f0 f0 f0 f1 f0 PROGRA00010 00000020: f0 f0 f1 f0 f0 f0 f1 f0 f0 40 f8 f6 f2 f0 f2 40 001000100 86202 00000030: f8 f6 f2 f3 f2 40 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 86232 0000000000 00000040: f0 f0 f0 40 c1 f9 40 40 40 40 40 40 40 40 40 40 000 A9 file 1 record 3 size 80 00000000: c8 c4 d9 f2 e4 f0 f1 f0 f2 f4 f0 f1 f0 f2 f4 f3 HDR2U01024010243 00000010: f0 f1 f0 f1 f0 f0 f0 f0 f3 f0 f0 f0 f0 f0 f0 f0 0101000030000000 00000020: f0 f0 f0 f0 f0 f6 f4 f0 f0 f1 f3 40 f0 f0 f6 f4 00000640013 0064 00000030: 40 40 f0 f6 40 40 40 40 40 40 40 40 40 40 40 40 06 00000040: 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 file 1 record 4 size 2070 00000000: 40 00 00 00 00 01 00 00 00 00 00 00 12 03 03 04 ............... ...etc. Is oddness with file marks something others have seen with Burroughs tapes? Something the Cipher drive is known for? Moon phase? Incorrect fifth digit of my SSN? I've not had this missing file mark problem with tapes written on other vendors systems - Prime, IBM, DEC. Cluebats appreciated. De

5 years, 1 month

PDP-11/34 /04 power knob anyone?

by fritzm＠fritzm.org

Hi folks, I?m working on an 11/34 at the moment, with the programmer?s console, and it is missing its front panel power control knob. I think it is the same one used on the 11/04? Anybody have a spare in their parts stock that they?d be willing to part with? (I?m also missing the plastic half-panel for the front, but I do see those go by on eBay from time to time.) cheers, ?FritzM.

5 years, 1 month

Got DSM-11 running, any manuals online?

by dick.curtis＠ymail.com

ftp://ftp.intersystems.com/pub/msm/docs/msm43/users.pdf is another source for a manual.? It's the version which Micronetics sold, of which I heard "Micronetics shamelessly? copied DSM-11?practically line for line to the PC."??So the manual is probably close enough to work. HTH,Dick

5 years, 1 month

cc:Mail Router for NT

by tomas＠basun.net

Hi all, I'm using a HP 200LX to connect to a cc:Mail installation, with a null modem cable. It has worked better before, but now I don't seem to be able to connect at all. This is the output from the router, when trying to connect from the 200LX: | C:\CCMAIL\Router>C:\CCMAIL\Router\NTROUTER.EXE C:\CCDATA MODEM/PBX COM1 DIAGNOSTICS/F LOG/C:\CCMAIL\Router\ROUTER.LOG | cc:Mail NT ROUTER Version 6.10.00.4 | Copyright (c) 1986, 1997 by cc:Mail, Inc. [...] | Press Esc to terminate cc:Mail ROUTER program. | Waiting to receive messages... | 23/12/20 13:53:33 Answering call... 2 8 3a 74 68 8 2a 55 22 52 23 | 7d 18 80 from ~????`???f???????? ?`. Data connection not requested. | 23/12/20 13:53:49 Ending connection. | Waiting to receive messages... | 23/12/20 13:53:55 Answering call... 2 8 3a 74 68 8 2a 55 22 52 23 | 7d 18 Data connection lost. | 23/12/20 13:54:36 Ending connection. | Waiting to receive messages... The log files are empty. There are no other error messages anywhere that I can see. Anybody recognises anything? Any ideas about things I can try? Here is the modem file: | [attributes] | MODELS=Null | NULL MODEM=1 | [commands] And another thing is that I only seem to be able to get a response at 1200 baud (the router default) by not specifying a speed when starting the router. If I add the speed to the command line (the first line above), any speed, (and the corresponding setting on the Palmtop) then there is no connection at all. It has worked better earlier. I managed to connect at 9600, but that was a different PC. I am not aware of having changed anything relevant on either PC or Palmtop. Any help appreciated. /Tomas

5 years, 1 month

Rod Coleman's personal history of founding, building & running SAGE

by lproven＠gmail.com

This may be old news -- it was new to me, though. https://suddendisruption.blogspot.com/search/label/Booting%20Sage%20Computer I'm not really familiar with SAGE machines. They were not as well-known in the UK, I think, being upmarket from the Apple ][ and IBM PC, both of which were eye-wateringly expensive by UK standards of the time. Also, they were terminal-based things and even back then I was interested in boxes with graphics. :-) -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? gMail/gTalk/gHangouts: lproven at gmail.com Twitter/Facebook/LinkedIn/Flickr: lproven ? Skype: liamproven UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

5 years, 1 month

Dilog SQ703 Manual anybody?

by nw.johnson＠ieee.org

I'd like to get a Dilog SQ703 I have to work on my microvax, does anybody know where I can get a copy of the manual? cheers, Nigel -- Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU Amateur Radio, the origin of the open-source concept! Skype: TILBURY2591 nw.johnson at ieee.org

5 years, 1 month

M688 Flip Chip Unibus Power Fail Driver Modules

by jnc＠mercury.lcs.mit.edu

> From: Steven Malikoff > Would that be part of this system at a Japanese computer museum? ... > the 11/05 has 'Unichannel15' on it Yes, the 3 bays in the center are a PDP-15. (The indicator panel at the top of the center bay is the one for the PDP-15 CPU; you can see it here: http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html at the top of the 'PDP-15' section.) The Unichannel 15: https://gunkies.org/wiki/UNICHANNEL_15_System is undoubtly there to drive the RK05; I don't think there's a native PDP-15 controller for that. > There is an 11/15 ??? Is that a typo for 'PDP-15'? The -11/15 looks just like an -11/20 https://www.ricomputermuseum.org/collections-gallery/equipment/dec-pdp-1115 except it only has 16 address switches, not 18 as on the /20. (The front panel shown there has an OEM-specific re-paint; I couldn't quickly turn up an image of a DEC /15 front panel.) Noel

5 years, 2 months

Bendix G-15 and Control Data 160 console on ebay

by p.gebhardt＠ymail.com

If anybody of you has been looking for a Bendix System or a CDC 160 console and has deep pockets: That's your opportunity ;) ebay numbers 203239156838 and 203239181341 Not affiliated with the seller. Just saw the listings - can't believe that such cool systems are still stored in some warehouses in the U.S. for business purposes ... Cheers, Pierre ----------------------------------------------------------------------------- http://www.digitalheritage.de

5 years, 2 months

M688 Flip Chip Unibus Power Fail Driver Modules

by jnc＠mercury.lcs.mit.edu

> The "Spare Module Handbook" lists: > ... > MX11-B I apparently can't read. Should be "MX15-B": https://gunkies.org/wiki/MX15-B_Memory_Multiplexer Noel

5 years, 2 months

test please ignore

by jwest＠classiccmp.org

Test, please ignore.

5 years, 2 months

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