Re: BASIC environment ending with "run complete", and slashed 'O' characters?

tem with a bunch of local mods, but BASIC and TELEX are both part of the base system as supplied by CDC. paul On Apr 26, 2022, at 3:05 AM, Raymond Wiker via cctalk wrote: https://en.wikipedia.org/wiki/CDC_Kronos <https://en.wikipedia.org/wiki/CDC_Kronos>, perhaps? On 26 Apr 2022, a

Re: BASIC environment ending with "run complete", and slashed 'O' characters?

On 4/26/22 02:05, Raymond Wiker wrote: https://en.wikipedia.org/wiki/CDC_Kronos , perhaps? Could well be, given the MECC / Minnesota / Cray connections. Question then is whether the CDC 6000 series (or later) machines had a BASIC environment that

BASIC environment ending with "run complete", and slashed 'O' characters?

Perhaps a long shot, but I've got an old piece of paper here showing a BASIC listing followed by a program run where the BASIC environment terminates with "run complete" - does that behavior ring any bells with anyone? I'm mildly curious what machine it may have come from. The other

Data recovery (was: Re: SETI@home (ca. 2000) servers heading to salvage)

On 4/3/22 10:51, Eric J. Korpela via cctalk wrote: drive removed and destroyed for privacy reason. For those in the know, how much success - assuming a "money is no object" approach - do data recovery companies have in retrieving data from drives that have a) been overwritten with zeros

Re: SGI Indigo keyboard / mouse / converter wanted

On 2/20/22 10:36, Andrew Diller wrote: Indigo1 is not PS/2, even though the connector looks that way. Correct. I was just pointing out that I think I recall someone years ago implementing a converter between the Indigo's proprietary protocols and "modern" (at the time) PS/2 keyboards/mice -

SGI Indigo keyboard / mouse / converter wanted

Hi all, A friend of mine has just acquired an Indigo (R4k with XZ graphics option), but of course it's the usual story and the keyboard/rodent had been lost. In absence of the genuine items they'd still be happy with a USB converter (at least for the time being), but it seems those are

Re: tamayatech let down

On 12/20/21 8:32 PM, Jacob Ritorto via cctalk wrote: I think I should pass on my experience as a warning to others. I googled around for a particular PDP-11 board I needed and tamayatech.com was a hit, with "buy now" option and condition: refurbished. Side question, if I may, but what does

Re: Computhink Eagle 32 - software, docs, info?

On 10/17/21 2:18 PM, Joshua Rice wrote: I saw that exact thread, and was as intrigued as you. Looks like it didn’t have any graphics capability, but instead had a text-based terminal built in. Quite unusual to see such a basic machine with such a capable CPU. The Infoworld article claimed

Computhink Eagle 32 - software, docs, info?

Hey all, Someone in one of the Facebook vintage groups that I'm in just picked up a Computhink Eagle 32, an early-ish (appears to be circa 1981/82) 68000-based machine with integral display and keyboard. On the rear it has a 50-pin connection for floppy and a 34-pin connection for a hard

Re: An American perspective on the late great Sir Clive Sinclair, from Fast Company

On 9/26/21 9:05 AM, Liam Proven via cctalk wrote: I found this interesting for perspective. The British media (and AFAICS of Australia, New Zealand and several bits of Europe) have been saturated with coverage of a much-loved, widely-celebrated and revered hero of tech. As FC points out, even

Re: Micropolis 1525 stuck heads

On 9/20/21 1:13 AM, Chris Zach via cctalk wrote: Running it through the MFM tool got all but 200 or so sectors on the first pass, most errors were on head 3 but tapered off after cyl 500. Seems like a normal copy of Accent, no special information so it might not be worth taking the world apart

Re: R.I.P. Clive Sinclair

On 9/18/21 11:15 AM, Fred Cisin via cctalk wrote: Clive Sinclair died at 81 after a long illness (probably not Covid) 'course now he is touted as being "the inventor of the pocket calculator" (as with all "FIRST"s, it leaves out a few predecessors,such as Busicom (1971, whose contract with

unknown rack PSU ("PPI 1247-000-91 ADDS")

I found a vintage rackable linear PSU at a sale over the weekend, appears to be late '70s vintage going by date codes on some of the high-power components inside. Front panel is plain black with just a power switch and telltale lamp. Back has a ratings sticker which says "PPI 1247-000-91

Re: Compaq Deskpro boards/hard drives from the late 1990s

On 7/21/21 11:27 AM, Chuck Guzis via cctalk wrote: On 7/21/21 8:19 AM, Liam Proven via cctalk wrote: IIRC the original capacity ceiling on IDE was 504MB or something, so I think the capacity of a CD (~650MB) would make a strictly IDE CD drive impossible...? I can't think of anything other

Re: What's left of the Houston Museum stuff

On 7/23/21 2:01 PM, Al Kossow via cctalk wrote: On 7/23/21 10:38 AM, Jules Richardson via cctalk wrote: Sadly it's getting on for 1,500 miles away from me. just let this stuff be ecycled already I could actually use a few more CRTs. Well, not "use personally" - I've got enou

Re: What's left of the Houston Museum stuff

On 7/21/21 7:09 PM, Teo Zenios via cctalk wrote: Nice selection of dirty and yellowed  computers in unknown condition. Dirt can be removed, things can typically be repaired if needed, and not all of us expect our systems to be the exact shade of whatever that they were when they were built

Re: Compaq Deskpro boards/hard drives from the late 1990s

On 7/21/21 12:51 PM, r.stricklin via cctech wrote: Regarding your "IDE HDDs were extremely rare" comment, did *anyone* other than Quantum release an IDE drive in that 5.25" form factor? I can't think of any, everything else was 3.5", although some early vendor's drives were the same height as

Re: core matt repair

On 7/21/21 9:32 AM, Tom Hunter via cctalk wrote: Hi Jos, Resoldered how? The wires are _very_ thin (I guess 0.1 mm or thinner - think of human hair) It's not at all scientific, but I took a photo via a loupe of one of my core boards with a cat hair over the top a couple of years ago, and

Re: Compaq Deskpro boards/hard drives from the late 1990s

On 7/21/21 4:20 AM, Liam Proven via cctalk wrote: and a whole bunch(!) of 10- and 20-GByte IDE/PATA 5.25-inch desktop hard drives I consider this bit unlikely TBH. 5.25" *IDE* HDDs were _extremely_ rare. The 5.25" format was dead before IDE came along, and 99% were 3.5", except the Quantum

Re: core matt repair

On 7/20/21 12:13 PM, pspan via cctech wrote: I worked at a company called DMA located in Amery Wisconsin during the 80's and 90's that did do core mat repair. Yes, the gal that did the work used a scope. She replaced cores and wires. Good luck finding someone to do that work now. If I remember

Re: Tektronix 8002 microprocessor lab software

On 7/19/21 7:53 PM, Jules Richardson via cctalk wrote: Well sadly it's looking like game over. By the sounds of it there's a basement full of old equipment and boards, and a scrapper out in OH has offered $6k for the lot, sight unseen, just on the hope that they can make a buck on the gold

Re: Tektronix 8002 microprocessor lab software

On 7/19/21 6:20 PM, Al Kossow via cctalk wrote: On 7/19/21 4:03 PM, Jules Richardson via cctalk wrote: Just out of interest, is the software for the Tektronix 8002 microprocessor lab archived out there anywhere? It would be nice to save a complete system though, since most have been

Tektronix 8002 microprocessor lab software

Just out of interest, is the software for the Tektronix 8002 microprocessor lab archived out there anywhere? What I believe is one popped up on one of my Facebook groups, and it'd be a trek to get it even if I can arrange a good price with the current owner - but it sounds like the

Re: DEC PDP-8/e H212 core mat repair

On 7/19/21 3:40 AM, Joshua Rice via cctalk wrote: I believe much of the core manufacturing for DEC minicomputers was outsourced, but a lot of it had become much more automated by the late 60's and early 70's. I've got a trio of planes here, two of which are from a Lockheed MAC-16, but the

Re: FTGH for pickup in So Cal: PDP-11/44, Macs, Atari ST, RiscPC, ...

On 7/6/21 6:14 PM, Cameron Kaiser via cctalk wrote: re. Acorn RPC 700 for anyone reading, I may still have a logic board or two for these over in England. No real ETA for getting them US-side, though (and chances are that they have battery issues, too). It's still on the market if people want

Re: FTGH for pickup in So Cal: PDP-11/44, Macs, Atari ST, RiscPC, ...

On 7/5/21 9:30 PM, Cameron Kaiser via cctalk wrote: There is also a big Kennedy disk next to it but I don't know if they originally went together. Just to satisfy my curiosity, is that SMD or something else? I've got at least one Q-bus SMD controller so have been keeping an eye out for drive

Re: Interesting photos of a computer graphics lab from 1968

On 6/24/21 12:37 PM, Mike Begley via cctalk wrote: Other recognizable hardware are a couple of ASR33 teletypes (one of which was rebadged as Adage), and some tape drives, the manufacture I don't recognize. Everything else, I pretty much can't make out what any of it is, but perhaps someone

Epson QX-10 Q10CMS board

Hi all, There was a post in one of the Facebook vintage groups from someone who has Epson QX-10 Q10CMS and Q10GMS boards. The GMS is what I have in my own QX-10, but does anyone know what the CMS board is? Both boards have a NEC 7220 graphics controller, but the CMS appears to have more

Re: DEC Computer Lab for sale

On 5/30/21 10:42 AM, Vincent Slyngstad via cctalk wrote: The mini-banana works OK, and I don't know of anything better that is still available.  A hundred of them (50 patch cables) won't be cheap. https://so-much-stuff.com/pdp8/computerlab/computerlab.php The photos get a little bigger if you

Re: How to read Osborne 1 Floppies?

On 5/24/21 1:26 PM, Fred Cisin via cctalk wrote: There were two Osborne floppy formats.  Both CP/M. IIRC, the original format was "Single Density" (FM), 10 sectors per track, with 256 bytes per sector (similar to the TRS80-Model-1.  That will require FM/SD capability.  Most NEC FDCs did not

Re: Link Rot

On 5/22/21 10:28 PM, Chuck Guzis via cctalk wrote: A more disturbing popular trend is information being placed in long-ish Youtube videos that could have been summarized concisely in a page of text. Kids. It seems to be the modern way - current generations don't want to spend a couple of

Re: Motor generator

On 5/5/21 6:09 AM, Mark Linimon via cctalk wrote: On Tue, May 04, 2021 at 10:07:28PM -0700, Chuck Guzis via cctech wrote: "Power for the basic computer consists of one 250 kva, 400 Hz motor generator set. The motor-generator set has the capability of providing power for the CPU, MCS, I/O and

Re: Apollo Date Bug

On 4/7/21 1:16 AM, Kurt Nowak via cctalk wrote: Hi All, Back after a long time away from this list... I happen to have a small herd of Apollo DN3500/4500 boxen which i pulled out the other day to see if they still run. I can't help with the date issue, but just wanted to say how nice it is

Re: Mystery (unusual) 1973 terminal

On 2/12/21 1:08 PM, Brent Hilpert via cctalk wrote: Between google and the browser I'm using, the photos didn't display properly, so I downloaded them (upper right corner), which unzipped to high-res versions. I had issues myself, zoom would work, but there seemed to be no obvious method for

Re: Mystery (unusual) 1973 terminal

On 2/12/21 8:08 AM, Paul Koning wrote: The photos are not particularly helpful; they show parts of the device but not close enough to tell the details, while much of the case is not shown. Is there any manufacturer label or serial number tag on the case? I'll see if I can get him to share

Re: Mystery (unusual) 1973 terminal

On 2/12/21 10:05 AM, William Sudbrink wrote: Sort of reminds me of a DataPoint 2200. Clone maybe? I see what you're saying, but I don't think there's much in the way of brains to this thing, though (unlike the 2200, which I believe was an "actual computer") - it's just a terminal. From what

Mystery (unusual) 1973 terminal

Hi all, Hopefully the following link works, but someone over on one of the Facebook vintage groups has this oddball terminal from 1973 that they've been looking for any information on: https://drive.google.com/drive/folders/1-2uEFbi3OKBYr06y6yHnygDiLMtw2Qkj ... it's somewhat

Re: Epson QX-10 hard drive

On 1/31/21 12:35 PM, Warner Losh via cctalk wrote: Greetings I recently purchased a QCS external hard disk on ebay. This was one of the companies that was selling DEC Rainbow hard drives. I had hoped it was an old Rainbow drive with interesting to me bits... Turns out it is an Epson QX-10 hard

Re: tty and video displays

On 12/14/20 10:06 PM, Brent Hilpert via cctalk wrote: On 2020-Dec-14, at 7:57 AM, Jules Richardson wrote: On 12/14/20 4:41 AM, Brent Hilpert via cctalk wrote: Yes. Coincidentally I've just been refurbishing one - a Teleray 3931. It's an ASCII/APL terminal, overstriking was included for the

Re: tty and video displays

On 12/14/20 10:06 PM, Brent Hilpert via cctalk wrote: (It's definitely -12V, not -5V? I'm just thinking that the -12V noted on your schematic is quite close the the 15V rating on the cap - although that could explain why my later setup got caps rated to 35V, too) I don't remember whether I

Re: tty and video displays

On 12/14/20 4:41 AM, Brent Hilpert via cctalk wrote: On 2020-Dec-14, at 1:26 AM, ben via cctalk wrote: Often for data input one could use over strike characters for input. Not EQ might be = BS | Did any video display terminals repeat the same effect? Yes. Coincidentally I've just been

Re: Votrax Type N Talk or PSS, Intextalker, Microvox

On 12/1/20 7:28 PM, Tony Aiuto via cctalk wrote: Oh.. That brings back memories. We had a Votrax with a serial interface in the computer room. I configured it as a printer so I could yell into the room.. echo Hey Alan. Look at the console and change the tape to the one requested | lpr -Pvotrax

Re: Seagate Elite "reverse surging" noise

On 11/14/20 11:09 AM, Richard Pope wrote: Jules,     That sounds like a spindle motor bearing that is going bad. Yes, it will get worst and the motor will fail to spin up at one point. I wouldn't use this drive for anything that is important. Remember these motors don't have a lot of torque.

Seagate Elite "reverse surging" noise

I picked up a couple of 9GB Seagate Elite SCSI disks the other day (model 410800N, 1995-vintage but 5.25" FH units). Both drives spin up, both pass r/w tests successfully. On one unit, the spindle motor sound is constant. On the other, however, it makes a sound that I can best describe as

Toaster Flyer - proprietary drives?

I've been talking to the guy in NYC who has the storage portion of what appears to have been part of a Toaster Flyer setup (I forget who, but someone on the list forwarded details a few months ago) - two 5.25" full-height SCSI drives, a 3.5" SCSI drive, passive ISA backplane, and some form

Re: Compaq Portable II PSU - value of C13?

On 10/3/20 4:35 PM, Bill Degnan wrote: that's a good question.  I'd like to get more info on that supply as well. There's some info here on the connector pinout, in case you haven't seen it before, but I've been unable to find any schematics so far:

Re: Compaq Portable II PSU - value of C13?

On 10/3/20 4:34 PM, Jules Richardson via cctalk wrote: Hi all, Does anyone happen to know the value of C13 in a Compaq Portable II power Additional question, does anyone know the nature of the ST506-IDE bridge in these machines? My hard disk is a Miniscribe 8212, which I think has two

Compaq Portable II PSU - value of C13?

Hi all, Does anyone happen to know the value of C13 in a Compaq Portable II power supply? It's a small-ish tantalum that lives next to the heatsink between U6 and U7 - although mine doesn't live any more, having just roasted itself in spectacular fashion. Quite possibly there's some other

Re: Disabling SCSI parity checking to dump disk on ACB4000 MFM-SCSI adapter?

On 9/26/20 10:32 AM, Michael Engel via cctech wrote: Using DOS might be another option, I seem to hit a roadblock with every Unix version I try... hmm, have a look here: http://ftp.vim.org/ftp/pub/ibiblio/kernel/patches/scsi ... adaptec-40XX-1.02.tar.gz looks like it might do the trick. Use

Re: Disabling SCSI parity checking to dump disk on ACB4000 MFM-SCSI adapter?

On 9/26/20 10:56 AM, Al Kossow via cctech wrote: ACB4000s aren't common command set. it expects the driver to tell it the drive parameters I'm possibly/probably wrong, but I thought the ACB-4000 only needs the parameters setting prior to format - I don't know it it has some form of non

Re: Disabling SCSI parity checking to dump disk on ACB4000 MFM-SCSI adapter?

On 9/25/20 12:31 PM, Al Kossow via cctalk wrote: On 9/25/20 10:08 AM, Plamen Mihaylov wrote: I was able to dump Torch Triple X System V, Release 1 Version 1.2 If anyone is interested I can share the image. I have a Torch Quad X CPU prototype CPU, missing the ASIC Interesting. I had a couple

Re: Disabling SCSI parity checking to dump disk on ACB4000 MFM-SCSI adapter?

On 9/23/20 3:28 PM, Michael Engel via cctech wrote: It seems that the problem lies in the firmware of the ACB4000, which doesn´t seem to support some standard commands, e.g. the INQUIRY command. Most recent Linux SCSI drivers seem to use this command. Lack of Inquiry support seems to be quite

Re: Osborne 1 keyboard repair?

On 9/21/20 6:41 AM, Tom Hunter via cctalk wrote: I cleaned the now exposed membrane using Isopropyl alcohol - no change in resistance. I don't think you've really exposed anything, have you? The membrane is going to be three layers - a bottom layer with traces on the upper side, a spacer

Re: AW: CGA card (Mitsubishi Electric) with 192K RAM?

On 9/8/20 6:04 PM, Fred Cisin via cctalk wrote: Date and time of Command.com and any other DOS files will identify the version number. I've got 11/26/85 on command.com. DIR /A  or DIR /A:H will let you see the hidden files (presumably IO.SYS and MSDOS.SYS; PC-DOS had IBMBIO.COM and

Re: AW: CGA card (Mitsubishi Electric) with 192K RAM?

On 9/7/20 6:18 PM, Fred Cisin via cctalk wrote: Floppy boot seems like the next step. OK, it boots off a DOS 3.3 floppy if that floppy is inserted before it attempts to boot from the hard disk. If I wait for it to do its "system file not found" bit, followed by a subsequent prompt to insert

Re: AW: CGA card (Mitsubishi Electric) with 192K RAM?

On 9/7/20 2:22 PM, Jules Richardson via cctalk wrote: And, even if it were somehow "compatible" with a completely different hard disk controller, "COMMAND ERROR" doesn't sound like anybody's error message for a wiped drive.  More likely to be a generic "READ ERROR"

Re: AW: CGA card (Mitsubishi Electric) with 192K RAM?

On 9/7/20 1:17 PM, Fred Cisin via cctalk wrote: BTW, XT compatibles with the Xebec (and Xebec-like) hard disk controllers would not give a "COMMAND ERROR" message for a Low-level-formatted/wiped hard disk.   Probably a "1701" error. This one's a Xebec, almost identical to one of the branded

Re: AW: CGA card (Mitsubishi Electric) with 192K RAM?

On 9/7/20 1:04 PM, Fred Cisin via cctalk wrote: "DOS based utility program to poke at the contents and/or snarf the int a file on disk"? DEBUG.COM Funny, I've only ever used it for quick bits of assembly (just a couple of days ago, in fact), and to do things such as kicking off the formatter

Re: AW: CGA card (Mitsubishi Electric) with 192K RAM?

On 9/7/20 2:26 AM, Veit, Holger wrote: Could this be a PGC card clone? https://en.wikipedia.org/wiki/Professional_Graphics_Controller That had crossed my mind at one point, but there's no horsepower to this card at all - it's just TTL, RAM, BIOS and the 6845. The color output *appears* to

Re: CGA card (Mitsubishi Electric) with 192K RAM?

On 9/7/20 8:17 AM, newsgro...@micromuseum.co.uk wrote: You might find reading this thread useful: https://www.vogons.org/viewtopic.php?t=57843 That's excellent - thankyou! I'd been trying to find anything about this machine at all and not having much luck (I'll print all that out and leave

IBM 5160 math copro switch

Sifting through my XTs and clones... I've had three so far with no math copro (8087) fitted, but switch 2 of SW1 is set to off. IBM docs say off is "math copro installed" and on is the "installed" position, i.e. the reverse of what I'm seeing (the minuszerodegrees site repeats this,

CGA card (Mitsubishi Electric) with 192K RAM?

Digging through old PCs, on a battery-removal spree... came across a Sperry 3070 XT-a-like (I wouldn't quite call it a clone, it's a bit goofy) which has a Mitsubishi Electric system board, RAM expansion, and video hardware. The video hardware is... odd. It's actually two full-length

Re: Looking for an IDE simulator

On 8/28/20 12:40 PM, Al Kossow via cctalk wrote: Also, I discovered recently that there is a maximum number of hours measured in years on SSDs and systems will start throwing SMART errors when that is exceeded. I have a few doing that now on systems with minimal writes but lots of hours. There

Seeking PET 4016/32 'shift' keycap

After over a decade of keeping eyes peeled, I found a Commodore PET 4016 at a yard sale yesterday (it actually wasn't in the sale, but there was some old phone stuff there, and when I see anything like that I always ask the owner if they happen to have any vintage computer stuff hiding

Re: FS: Video Toaster partial system

On 6/30/20 11:58 AM, JP Hindin via cctalk wrote: A person on Reddit picked up what appears to be part of a Video Toaster and is interested in getting it to someone who can actually use it. I offered to pass on the message- The system is in a PC case, with two full-height 5.25" Seagate SCSI

Re: Amiga Vendors?

On 6/11/20 5:58 AM, Liam Proven via cctalk wrote: On Thu, 11 Jun 2020 at 09:52, Ethan Dicks via cctalk wrote: I'd say the Amiga really lost its shine around 20 years ago, about the time Linux was getting serious and Windows 98 dominated the desktop. Unfortunately, yes, I think you're right.

Re: Restarting Old Amiga's

On 6/10/20 10:32 AM, Ethan O'Toole wrote: use that instead - the T model looks a bit too much like a crazy mid-90's PC for my tastes (although the SCSI's nice). The 4000T has IDE! I have one of those CF card to IDE boards on a back expansion slot, allowing it to be removed. Well, it has IDE

Re: Restarting Old Amiga's

On 6/9/20 1:19 PM, Ethan O'Toole via cctalk wrote: My friend found the deal on the A4000Ts which includes mine. They weren't really cheap, and it was 3 in one deal surrounded by a ton of unknowns. All the manuals for the other things like the 060 accelerator and stuff -- the hardware wasn't

Re: Restarting Old Amiga's

On 6/8/20 4:18 PM, Ethan O'Toole via cctalk wrote: I was very active in collecting, and on this list at the beginning.  I also have a couple A1200’s that need work, and I used to have a couple A2000’s (those went to Eric Smith probably 15-20 years ago).  There is also a partial A500,

Re: Restarting Old Amiga's

On 6/8/20 3:02 PM, Zane Healy via cctalk wrote: I have the urge to get my Amiga’s back up and running. I’m still trying to find my main Amiga A3000, but have found my A500 and my A600. The problem is, I don’t remember the last time I powered these on. It’s been a long time since I’ve had

Re: Bob Davis and old computer stuff

On 4/26/20 6:45 AM, Tony Duell via cctalk wrote: You're making me feel very greedy, as I have 4 of them. All different, and none for sale... :-) I've been looking for one ever since I moved to the US 12 years ago, but they seem to have all vanished - I remember I'd see them surface every

Re: Core Memory Photo

On 4/15/20 6:22 PM, keith--- via cctalk wrote: I have three others with the cover still on :)  I want to make a clear plexiglass cover for them. Just for fun, this is what I have from a Lockheed MAC-16 machine: http://www.classiccmp.org/acornia/tmp/catcore.jpg ... the white line is a cat

Re: Mystery 1970 core board

On 3/4/20 1:15 PM, Al Kossow via cctalk wrote: found it in this MAC-16 ad https://adspast.com/store/customer/product.php?productid=62927 Thanks, Al! Definitely it. Hopefully I'll make it back to the site at some point and see if there are more related boards, although I think everything

Re: Mystery 1970 core board

On 3/3/20 6:18 PM, Jules Richardson via cctalk wrote: Hopefully collective wisdom can help on this one - does anyone have a clue what system this core board was from I think I may have figured it out. Back when I picked these up (I have another one, too) they were in a pile of boards from

Re: Mystery 1970 core board

On 3/3/20 9:32 PM, Brent Hilpert via cctalk wrote: It looks to be 16 bits wide rather than 8, I think you'll find there's another 8 bit-arrays of cores on the underside of the planar-array daughter board. You may well be right; I can't quite tell for sure as there's not much clearance between

Mystery 1970 core board

Hopefully collective wisdom can help on this one - does anyone have a clue what system this core board was from: http://www.classiccmp.org/acornia/tmp/coresmall.jpg The curved edge connectors (presumably to make board insertion easier) are quite distinctive, plus the way the power's fed

Re: Mystery mid-70's keyboards

On 12/28/19 12:06 PM, Warner Losh via cctalk wrote: "marg set" sounds like a word processor. Looks like a data entry keyboard... Yup, the ASCII control codes on the keys seemed out of place for a wordprocessor, but then there's that "marg set" key. I'd wondered about some kind of early

Lockheed MAC-16

Are there any surviving Lockheed MAC-16 machines anywhere? And/or does anyone have a good photo of the front? (All I've been able to find online is the angled shot that's on the wikipedia page, plus a few grainy images from marketing info). I rescued a couple of panels a little while ago,

Mystery mid-70's keyboards

Hey all, I was wondering if anyone knows what system either of these two keyboards came from: 1) APL keyboard made by Maxi-switch, IC date codes in 1976, p/n 2129-009, keyboard encoder has "NKBD-452 03-004-05": http://www.classiccmp.org/acornia/tmp/maxi.jpg 2) Keyboard branded as Licon

Re: HP 7220C plotter port settings

On 12/5/19 6:13 PM, Glen Slick wrote: 7220C_7220T_OperatingAndProgrammingManual_07220-90003_229pages_Feb81.pdf http://www.hpmuseum.net/document.php?hwfile=1567 doh! Thanks. I'd been to that site already, but somehow managed to completely miss the 'documentation' link. That should do the

HP 7220C plotter port settings

Hi all, I picked up an HP 7220C flatbed plotter the other day which (after freeing the stuck carriage) is responding to panel commands in 'local' mode. For the terminal RS-232 interface, does anyone happen to know: a) The character size (7 or 8 bits)? b) If the connection between terminal

CRT faceplates / screen "mold"

Many years ago I cut the faceplate off an HP display exhibiting serious decay of the sealant between the faceplate and the CRT itself, cleaned everything up, then reattached the plate just with a bead of sealant around the perimeter (where it wouldn't be seen once the bezel was back on).

Re: TI994/A Power Supply

On 11/14/19 3:02 PM, Jules Richardson via cctalk wrote: I'm about 95% certain that it does NOT take line voltage in. Hmm, I'll see if I can find a moment to take it apart later. It's interesting that it's a boxed unit with a cord that fits - but then it does have three broken keys (caps

Re: TI994/A Power Supply

On 11/11/19 1:12 AM, Eric Smith via cctalk wrote: On Sat, Nov 9, 2019 at 1:46 PM Jules Richardson via cctalk < cctalk@classiccmp.org> wrote: I've got another /4A however which has a 2-pin plug on the back, and that one appears to just take plain ol' 110VAC line voltage and t

Re: TI994/A Power Supply

On 11/4/19 7:39 AM, Allison Parent via cctalk wrote: Do better research. The power is external transformer and internal low voltage switch mode power supply. It seems to depend on the variant. I've got a /4 and a /4A which have 4-pin plugs on the back, and these use an external PSU outputting

Re: VAX & PDP-11 Stuff To Clean Out

On 11/6/19 12:16 PM, David Coolbear via cctech wrote: M5976-AA KZQSA SCSI Controller Q Hmm, I could sure use one of those... I bought a bunch of QBus boards from my recycler quite some time ago, but the systems that they'd been pulled from were run with SMD drives. Finding a working SMD

Re: Can't contact Dave McGuire AK4HZ

On 10/26/19 10:19 AM, Jon Elson via cctalk wrote: Dave McQuire keeps emailing me about the CAMAC controller boards, but he obviously is not getting my replies. Anybody know how to contact him? FYI I just threw him a message on facebook letting him know, although it's not saying that he's

Re: Vintage computer store hints in Minneapolis?

On 9/23/19 10:22 AM, JP Hindin via cctalk wrote: I also rolled through The Ax-Man... for 3 hours because I'd never even heard of the place before and was absolutely astonished at what I'd found. Despite getting to Minneapolis a few times a year, I've never been for exactly that reason - my

Re: Vintage Computer Warehouse Liquidation

On 9/24/19 7:02 AM, Electronics Plus wrote: Computer Reset was in Dallas. This one is in Houston. Totally different animal. Thanks for the clarification - they're not too far, and this guy posted photos of a few items on Facebook which appeared to have been taken in a small garage - so there

Re: Vintage Computer Warehouse Liquidation

On 9/22/19 2:40 PM, Thomas Raguso via cctalk wrote: This is my first of many posts that I will make about this sale. Is there any connection to Computer Reset in Dallas, or is this a completely different animal?

Re: Heath/Zenith Z100 technical...

On 9/11/19 3:51 PM, Al Kossow via cctalk wrote: I'll put up a few things on bitsavers under zenith Thanks, Al! I've got the bitmap board, plus S100 cards for floppy, Winchester, and an extra 256K of RAM (it has 256 on the mainboard, by the looks of it) - so if I can work out the keyboard

Heath/Zenith Z100 technical...

I just picked up a board set from a Zenith Z-100 (not sure if it was a 110 or 120 model) which had been junked. I threw this out on the sebhc mailing list too, but perhaps someone here knows: a) If the machine's keyboard is completely passive (i.e. just a bunch of switches), or if there's

Re: Decaying foam on PCBs

On 8/27/19 10:38 PM, Chuck Guzis via cctalk wrote: I'd probably just use 91% isopropanol. No water to speak of, doesn't bother plastics--and cheap. I do normally use it on boards for general cleaning - I was just assuming that this nasty sticky foam would be too much for it. I'll give it a

Decaying foam on PCBs

I picked up a couple of HP 5036A logic trainers today, both of which have had goopy decaying foam come into contact on their PCBs. What's effective at removing it? I've only ever had problems with it in locations where I can use things such as citrus-based cleaners, but I'm a bit wary of

Re: IBM 5160 with oddball MDA input/output card

On 7/26/19 2:53 PM, Fred Cisin wrote: Genlock? MOST video add-ons were combined onto a board with their own video card, rather than connecting to IBM's It seems odd within a 5151/MDA context though - plus the system seems entirely self-contained, i.e. not designed to interact with any other

Re: IBM 5160 with oddball MDA input/output card

On 7/26/19 11:25 AM, Liam Proven via cctalk wrote: On Fri, 26 Jul 2019 at 13:23, Jules Richardson via cctalk wrote: Someone on one of the Facebook vintage groups Oh? Which one? It's in Vintage Computer Club, posted on the 24th. Doubtless Facebook's buried it for you because it seems

Re: IBM 5160 with oddball MDA input/output card

On 7/26/19 9:50 AM, Tony Duell wrote: Are you sure it's MDA rather than CGA. The reason I ask is that I have a full-length 8-bit ISA card in my collection that connects between the CGA card and its monitor (it also provides a composite video output if you want that) _and_ inside the machine it

IBM 5160 with oddball MDA input/output card

Hi all, Someone on one of the Facebook vintage groups found an IBM 5160 with an MDA display for sale in Australia, except that it's a bit odd in that the machine had what appears to be an MDA card, the output of which is then connected via a short external cable to the input on another

Re: "industrial" PDP-11

On 5/15/19 6:25 PM, Jules Richardson via cctalk wrote: Hey all, I bumped into someone who has some early (mid 1970 on some of the photos I've seen) PDP-11 bits - front panel and a handful of boards (the backplane, PSU, rack, peripherals etc. are long gone). Ugh, update... apparently

Re: "industrial" PDP-11

On 5/15/19 9:29 PM, Steve Malikoff via cctalk wrote: Here's the Industrial 11 version of the 11/05: https://youtu.be/XV-7J5y1TQc?t=254 Thanks for finding that... yup, that appears to be the exact panel that he has (and /5 or /10, or in fact what the difference is between the two anyway, I'm

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