test-drb

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101090 discussions

by mokuba＠gmail.com

Got a hard down situation and need to re-install/recreate the BBS system I had running. HDD makes swishy noises when shaken, haven't tried stirring yet. I /guess/ a bootable MCA SCSI card would work too... ;) I had the 160MB drive, but anything above 30 would work - i guess i'll just have to use a SCSI Drive for the file storage area once i get an MCA SCSI card .... -- Gary G. Sparkes Jr. KB3HAG

10 years, 4 months

WTB: PDP-11/03 front bezel

by pontus＠Update.UU.SE

Hi It's a longshot. But recently I aquired two BA11-N. One is just the cage and power supply. Looks just like this: http://www.ricomputermuseum.org/_/rsrc/1300059803599/Home/equipment/dec-pdp… The other came with mounting box but no front panel. I would like to make it complete with the white front bezel seen here: http://hampage.hu/pdp11/kepek/11-03.jpg Does anyone have one for sale? The greyish plastic arround the front panel would be a bonus since mine got a small crack in it. Regards, Pontus.

10 years, 4 months

Another apple II+ repair

by terry＠webweavers.co.nz

For anyone interested, here's another repair writeup. I didn't keep as good a notes as I should have on this one and the memory (my memory!) is of little help. If I'm going write these things up I really should do it straight afterwards! Anyway, the board lives now. It's something I could never have diagnosed just from chip swapping. http://www.classic-computers.org.nz/blog/2015-12-05-repairing-an-appleII+-b… I did learn that it's possible for the machine to boot to BASIC even with faulty RAM in the first row, something that I didn't think was possible. Depends on the nature of the fault I guess. Terry (Tez)

10 years, 4 months

The Structure of SYSTEM/360 (Blaauw & Brooks, et al.)

by pbirkel＠gmail.com

This was the five-part seminal description of the S/360, published in the IBM Systems Journal, Volume 3, Number 2. I've very much like to read all five parts. Does anyone have a copy that might be shared? Thank you, paul

10 years, 4 months

Decisions you regret Was: Mystery IC: Allen Bradley

by mark＠markesystems.com

From: jnc at mercury.lcs.mit.edu (Noel Chiappa) Subject: Re: Decisions you regret Was: Mystery IC: Allen Bradley > > From: Brent Hilpert > > > I threw out a print-only selectric a few years ago ... Regret it now, > > just because it would have been fun to figure it out. C'est la vie. > > I can top that. <...> > Every time I think about it I kick myself... Sigh! > > Although I suspect a lot of people here have stories like that... Yep. Among the things that I have given away (to Goodwill, or possibly Salvation Army) - all in running condition: - A complete HP-1000 system: A600 processor with internal hard drive, serial card + 8-port serial mux, all floppies, all documentation, a 2631G printer, 7912 13 MB disk drive, and two 2624B terminals - My CP/M "network", with Cromemco Z2-H with two 5 MB hard drives and two 8" floppies, 8-port serial card, connected to three H-19 terminals (the BIOS allowed you to become the console by typing ^C anywhere), HP2648 graphics terminal with tape cartridges, HP 2762 terminal (a re-badged GE Terminet-300), and an H-89 with three external floppies - Ancient SCM TypeTronic system, with the main typewriter console, two 30 CPS optical paper-tape readers, two really nice (re-branded CDC) 30 CPS punches, 2816 main control unit, and 7816 arithmetic unit (with internal fixed-head disk - 9 words plus a buffer, 30 digits/sec transfer rate!) - Abandoned to rust away in a garage: a Teletype KSR-33 with punch and reader, of course, and a built-in modem with acoustic coupler, in perfect condition - Turned down - a complete HP-3000 system, with two Eagle 76936 512 MB drives, 32 serial ports, 2617A 600 LPM printer, and a few 2640 and 2622 terminals Did I mention that *everything* was in perfect working condition? I'm going to go shoot myself now. ~~ Mark Moulding

10 years, 4 months

Decisions you regret Was: Mystery IC: Allen Bradley 314B102

by jnc＠mercury.lcs.mit.edu

> From: Brent Hilpert > I threw out a print-only selectric a few years ago ... Regret it now, > just because it would have been fun to figure it out. C'est la vie. I can top that. MIT offered me (as a gift) the PDP-11/45 that I used to run; it included a pair of CalComp 50MB drives, a pair of RK05s, an ABLE ENABLE, 3 H960's, lots of other goodies. I blew it off, I was too busy dealing with other things at the time (I was on the IESG at that point) to deal with arranging to get it shipped down to me. They gave it to someone else, and near as I can work out, eventually it got scrapped. Every time I think about it I kick myself... Sigh! Although I suspect a lot of people here have stories like that... Noel

10 years, 4 months

Diablo 3000 schematics wanted

by ard＠p850ug1.demon.co.uk

I suspect the answer is no, but before I spend a few afternoons tracing out the diagrams, does anyone have a schematic or (real) service manual for the Diablo/Xerox 3000 computer, in particular the MRPRO CPU board. This is a 1980s all-in-one business desktop computer with 2 internal 8" drives. Based on an 8085 CPU. I have one that was mangled in the house-move (the movers decided to cut the keyboard cable for me). I have now repaired that (and the signals do make sense) but I have other faults (these were probably there before the move, I had not run it for many years). Power lines are fine, CPU chip is getting a clock, but the ready pin is held low. So not a lot happening.... The CPU board is not complicated, really (about 50 ICs, all of them standard) so it is going to be possible for me to trace the schematic if that's what is needed... -tony

10 years, 4 months

Precision Instruments PI1200 7 track tape drive, interest anyone?

by mattislind＠gmail.com

We have this Precision Instruments PI1200 7 track tape drive. It can do 200 bpi, 556 bpi and 800 bpi. It should be an incremental type tape drive. Once upon a time (read seventies) it was used for experiments storing PCM audio on tape. But has since then not been used. The manual is somewhere nearby, but I didn't find it immediately. http://i.imgur.com/kYVLN9O.jpg http://i.imgur.com/LsWcLL0.jpg http://i.imgur.com/1LJLKAZ.jpg I guess that someone that need to recover old 7 track tapes might think it can be useful. It is located in Sweden. /Mattis

10 years, 4 months

DEC CPUs, Memory for sale

by useddec＠gmail.com

I have the following for sale from zip 61853. The "L" boards are up to 2 for $10 shipping within USA, 3 for $10 shipping for the "M" boards. For larger quantity, overseas shipments, or other question, please contact me off list. Quantities are limited, and I may have some third party memory i'll look for this weekend. L4000-AA ,KA670 I think, $100 L4001-Bx MS670 32MB $125 L4001-Cx MS670 64MB $200 L4004-Cx MS690 64MB $125 L4004-Dx MS670 128MB $225 M7606 KA630 $75 M7620 KA650 $100 M8637 MSV11 starting at $75 I still have a few RX8-E boards left... Thanks, Paul

10 years, 4 months

Anyone want a copy of DIGITAL ServerWORKS Manager ?

by glen.slick＠gmail.com

Before I chuck these in the recycle bin, does anyone want a copies of DIGITAL ServerWORKS Manager? I have two boxes, QB-4QYAA-SA 3.2 sealed in shrink wrap, and QB-4QYAA-SA 3.3 open box that is slightly crushed. The boxes (at least the still sealed one) look like this eBay item (not mine) listing: http://www.ebay.com/itm/321413114710 The DIGITAL ServerWORKS? Manager Installation and User Guide in the QB-4QYAA-SA 3.3 open box is the ER-4QXAA-UA. G01 version of the ER-4QXAA-UA. H01 manual here: http://manx.classiccmp.org/collections/mds-199909/cd2/network/4qxaauah.pdf It doesn't look like there is a market for these worth the bother of listing them on eBay. Free for the cost of covering postage from Seattle, WA if anyone wants them. -Glen

10 years, 4 months

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