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by zeljko.soric＠gmail.com

I have a magnetic tape with some source code Fortran programs on it dating back to 1979 and am looking for someone to transfer the tape content onto a USB stick. I think the tape was last used on an UNIVAC 1180 computer.

13 minutes

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Identification of Core Memory Unit

by Carlton Geckler

Requesting assistance in identifying a ferrite core memory unit. My father was an RCA, then Univac, field engineer on-site at Connecticut General Life Insurance in Bloomfield, CT, in the late ’60s and ’70s, and brought this home. Large cores on a coarse grid, hand-laced harnesses, U.S. Components MI-75 connectors, stenciled position numbers 876 and 825, frame stamped “Ser. 175.” Mounted under plexiglass. Suspect RCA 301 or 3301 or early Univac. Does anyone recognize it or know what CG ran in that era? Photos attached. Thanks, Carlton

20 hours, 18 minutes

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Checking my NOS VT100 Flyback

by Rob Jarratt

I got a NOS replacement flyback for my VT100 recently. It tests good in a ringing test so I am confident it is a good one. I will be trying it out soon under some carefully controlled conditions (particularly a light-bulb based current limiter) because I am not sure if the monitor board is good and I don't want to ruin the flyback, because my chances of getting another one are remote. Mine seems to be for an older revision because the monitor board has Germanium transistors. I decided to try to measure it to determine the specs and also to compare it to the failed one. I got some puzzling results that don't appear to be explained by shorted turns. I posted this question on the VCF forums, but I don't know if everyone on this list is on that forum, so I thought I would widen the net, as I want to be really sure before I attempt to use this new flyback. The details of my measurements are in this VCF post https://forum.vcfed.org/index.php?threads/vt100-terminal-just-died-i-think-…. Can anyone help me to interpret the results? Thanks Rob

2 days, 12 hours

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VCF Ontario update!

by Jeffrey Brace

VCF Ontario has been postponed until the summer of 2028. As a new event, we’re giving ourselves more time to plan and put together a great show for the vintage computing community. The exact dates will be announced once confirmed. In the meantime, get your retro computing fix at VCF Montréal 2.0 on November 7–8, 2026, at Champlain College Saint-Lambert! Come celebrate vintage computers and connect with fellow enthusiasts. Find out more at cvcfed.org Purchase your tickets here: https://events.humanitix.com/vcf-montreal-2026-2-0?c=cvcfed_web Thank you for your enthusiasm and support—keep those CRTs glowing! #VCFOntario #VCFMontreal #RetroComputing #VintageComputers

3 days, 1 hour

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Solaris 9 Supplemental Software disks?

by dave＠mitton.com

I have a Sun Ultra Sparc 5 workstation still in working order. With two hard drives, floppy, CD. "Back in the day" I would leave it idling in the basement running a Samba server But after some power failures and my poor responses to fsck, I managed to end up with a corrupted name_to_major file on the primary boot disk I've recently tried to get the software in working order, to recover any useful files, and sell the system. I replaced the TOY chip. And used a Solaris 9 CD to boot the system. I tried various ways to rebuild that file, but failed. Eventually, I asked the Solaris CD to rebuild the system slice. (I only really care about the data slices) It decided on the system slice on the second disk in the system,(which also had an older version of Solaris on it) and I can now boot that. So now that I have a running basic Solaris 9 system, I'm looking for any of the Supplemental software disks with any useful tools on them. It seems that the old time Sun websites are drying up and this is too old for the ones I found to carry. Does anyone know any current online sources I could get these disk images? Thanks, Dave.

5 days, 5 hours

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Denali Kubota

by Michael Dombrowski

Hi All,Wondering if there are any other Kubota Denali owners out there, and more importantly, if anyone has a copy of the software CD?I recently got one but it is basically a boat anchor/dumb framebuffer without the SW CD thanksmike (apologies if this appears twice, I accidentally sent it before my account was verified and it didn't show up in the archives so I assume the first email was deleted)

1 week

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Re: WTB: Cromemco System Zero

by jessicatroutt022＠gmail.com

I have a cromemco zero. And alot of hardware along with it. I have 3 complete zeros actually and they're as clean as the day they were bought inside and outside still in perfect condition. I know this may be years ago but you never know. I'm looking to get ride of my vast collection. It's not free though so message me back k if you wanna look further Yahoo Mail: Search, Organize, Conquer

1 week

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Subject: Looking for Tektronix 4012/4014 character generator ROM dumps (EA4001 / 156-0296-00, 156-0293-03)

by Serhii Bielov

Hello, I'm working on an emulator of the Tektronix 4010-series storage-tube terminals. The one thing I can't find documented anywhere is the dot pattern of the 4014's alphanumeric character set (a 7 x 9 dot matrix, scanned column by column). The character generator uses three ROMs: - 4012 (service manual 070-1461-01): U465 = 156-0296-00, an Electronic Arrays EA4001 (64 characters, 7 x 9, 9 outputs), and U479 = 156-0293-03, a Tektronix-coded ROM. - 4014/4015 (service manual 070-2303-00): ROM A U305 = 156-0296-00, ROM B U325 = 156-0293-03, and on the 4015 the APL ROM C U315 = 156-0294-03. Any of these would help: 1. A dump of 156-0296-00 (EA4001) and 156-0293-03, and of 156-0294-03 if you have a 4013 or 4015. 4013/4015/4016 boards may carry the same parts. 2. The Electronic Arrays data sheet or 1973-74 catalogue page for the EA4001 -- it is a standard-pattern part, so its font may be printed there. 3. A sharp close-up photo of a 4012/4014/4016 screen showing the full character set in one of the two smaller character sizes, where the beam wiggler does not fill in between the dots, so the dots can be counted. (The photo in the 4014 User's Manual, Fig. 1-4, is a halftone and does not resolve them.) I'd be glad to pass whatever turns up back to bitsavers and TekWiki. Thanks, Serhii Bielov

1 week, 2 days

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Re: Subject: Looking for Tektronix 4012/4014 character generator ROM dumps (EA4001 / 156-0296-00, 156-0293-03)

by Fabio J.W.

>You are aware of Rene Richarz's excellent 4014 emulator ? Unfortunately that emulator uses a standard font (monospace) from the graphic library cairo so it's not historically accurate -- Fabio Montarsolo

1 week, 2 days

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sun OS backup tapes

by Bill Degnan

I have been doing work commercially to recover SunOS 4.1.4 era (early 90s) backup tapes... anyone need this service? I have a good solid system set up to reconstruct the original file system from tape on the bench at the moment.. before I switch to VMS for my next project, let me know.

1 week, 4 days

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