Fwd: 50% DISCOUNT WEBSITE MANUAL & PARTS, ONE WEEK ONLY

FYI Forwarded Message Subject:50% DISCOUNT WEBSITE MANUAL & PARTS, ONE WEEK ONLY Date: Mon, 27 Mar 2017 06:53:02 -0700 From: Tucker Electronics Company To: a...@bitsavers.org 50% DISCOUNT WEBSITE MANUALS & PARTS, ONE WEEK ONLY Thanks

Re: PDP-11/20 in Iowa (x3)

On 3/27/17 7:37 AM, Systems Glitch via cctalk wrote: >> I don't know of MOS memory appearing in 11/20s as built by DEC, but there's >> no reason against it. There were 3rd party cards, Monolithic Systems, for example. The problem with the 11/20 is that hex wide cards don't fit, the fans

Re: Cross-talk square-wave?

On 3/29/17 2:14 PM, David Bridgham via cctalk wrote: > And I think this picture is the smoking gun. > > http://pdp10.froghouse.org/qsic/pic_24_2.gif > > Again, the bottom trace is the CS signal in question and the upper trace > is now one of the QBUS DAL lines (after the bus transceiver and

Re: PreOwned machine privacy - Was: Acclaim Entertainment Indy (with data, emails, etc) on eBay

https://motherboard.vice.com/en_us/article/turok-source-code-ebay On 3/28/17 6:36 PM, Al Kossow via cctalk wrote: > > > On 3/28/17 6:21 PM, Fred Cisin via cctalk wrote: > >> Anything else would be seriously unethical. > > the guy on ebay made a big deal on the n

Re: PreOwned machine privacy - Was: Acclaim Entertainment Indy (with data, emails, etc) on eBay

On 3/28/17 6:21 PM, Fred Cisin via cctalk wrote: > Anything else would be seriously unethical. the guy on ebay made a big deal on the net about one SGI machine that he knew had video game source code on it.

Re: Trip to CHM - Hotel/Restaurant Advice

On 3/30/17 9:29 PM, Chuck Guzis via cctalk wrote: > In the late 70s, on Evelyn in Sunnyvale, near Wolfe, I believe. That would be the original Halted location, Evelyn and Wolfe Halted moved to roughly laurence and central, then moved to 3051 Corvin last year. The previous building was

Re: Pair of Twiggys

On 3/14/17 1:31 PM, Noel Chiappa via cctalk wrote: > does the CHM have a Datapoint 2200? http://www.computerhistory.org/collections/catalog/X1621.99A

AC magnetic field strengths

I bought an AlphaLabs GM-2 Gaussmeter for another project, and measured the AC magnetic field strength touching these devices yesterday, since I really didn't have any idea beyond order of magnitude what they might be Handheld tape head demagnetizer: 40 Gauss GC Elec 9317 CRT degausing coil: 70

Re: Pair of Twiggys

On 3/15/17 10:40 AM, Josh Dersch via cctalk wrote: > the Mac was designed by a number of ex-PARC > researchers. Steve Capps was the only person on the original Mac team who worked at PARC. They were influenced strongly by the UI and graphics work of Lisa. There were several ex-Xerox (PARC and

Re: Pair of Twiggys

On 3/15/17 11:08 AM, Josh Dersch wrote: > Wasn't Bruce Horn at PARC (at least as a student?). yes, he worked in the Smalltalk group. I also forgot about Bob Beleville.

Re: Pair of Twiggys

On 3/14/17 5:45 PM, Fred Cisin via cctalk wrote: > Judging by the eBay response, it looks like a replica (or counterfeit?) would > be far more valuable than a usable > substitute. I keep waiting to see how much a Macintosh version of the Twiggy would sell for. The interface is completely

Re: Pair of Twiggys

On 3/14/17 6:23 PM, Chris Hanson via cctalk wrote: > a large portion is documented in “Inventing the Lisa Human Interface,” a > retrospective paper written by a couple of the Lisa folks for ACM’s > Interactions journal about 20 years ago. >

Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and restarting

On 4/1/17 12:33 PM, Dominique Carlier via cctalk wrote: > strange machine, there is a tape reader inside the printer. it is used to program vertical forms postioning. the format tape is in a loop

Re: Trip to CHM - Hotel/Restaurant Advice

On 3/30/17 8:15 PM, Chuck Guzis via cctalk wrote: > On 03/30/2017 08:04 PM, jim stephens via cctalk wrote: >> As to recommendations, I like the Country Inn & Suites by Carlson in >> Sunnyvale, which is at Ca 237 and Caribbean. If you run around by >> the bay is Weird Stuff, and it is about 2

Re: Trip to CHM - Hotel/Restaurant Advice

On 3/30/17 8:35 PM, Fred Cisin via cctalk wrote: >The guys who did the Hard Disk drive guide book had their >> original store in there Corporate Systems Center their main office was on Maude

Re: LOD bands for MIT CADR

http://www.unlambda.com/index.php?n=Main.Cadr On 4/12/17 7:50 AM, Alfred M. Szmidt via cctalk wrote: > Anyone seen or got any? >

Re: Harry Huskey, Bob Taylor -- sad news

some, but not enough Harry did an oral history at CHM when he became a fellow, as did Bob On 4/15/17 8:34 AM, Jon Elson via cctalk wrote: > Wow, that's amazing. I had no idea he was still around! I hope he wrote up > some memoirs or left stories. > > Jon

Re: LambdaDelta 0.98.1 released!

yay! I also sent a note to richard that the RSS seems to have stopped updating mid-march On 4/22/17 9:21 AM, Daniel Seagraves via cctalk wrote: > Ladies and gentlemen, boys and girls, children of all ages - I present to > you LambdaDelta, my decidedly average LMI Lambda emulator. > > See

Re: Bitsavers size

On 4/22/17 8:22 AM, Joseph Zatarski via cctalk wrote: > But wouldn't a nice tape be a much more appropriate distribution > medium? For the record, I have no intention of creating these "more appropriate" distribution media for anyone.

Did anyone on the list get these Displaywriter boards?

forgot to set a snipe on them http://www.ebay.com/itm/Lot-of-Vintage-Circuit-Boards-1970s-INTEL-/142304100248 http://www.ebay.com/itm/Lot-of-VINTAGE-Computer-Circuit-Boards-IBM-/142304122673 there were several boards in there I had never seen before

Re: Tape reel data recovery from MERA-400 polish computer

This is fsckin cool. Chuck and I were wondering how it turned out. On 3/9/17 7:10 AM, Liam Proven via cctalk wrote: > http://museo.freaknet.org/en/recupero-dati-nastri-magnetici-del-computer-polacco-mera-400/ >

Re: Tape reel data recovery from MERA-400 polish computer

wrote: > On 03/10/2017 09:59 AM, Al Kossow via cctalk wrote: >> This is fsckin cool. Chuck and I were wondering how it turned out. >> >> On 3/9/17 7:10 AM, Liam Proven via cctalk wrote: >>> http://museo.freaknet.org/en/recupero-dati-nastri-magnetici-del-computer-polacc

Re: Tape reel data recovery from MERA-400 polish computer

The next extension is to track the tachometer values so that you can detect and compensate for tape stick/drag which is absolutely critical for formats that don't self-clock, like NRZI. Fortunately, they mention that the tapes they worked with were in good condition. The killer problem with

Re: Looking for Apollo Workstations for TV show

> If it says "Earth is destroyed, the programmers failed" You appear to have no clue what "Halt and Catch Fire" is.

Univac I memory tank

http://www.ebay.com/itm/162428766985 Asked if the mercury was still in it. They ignored me.

Pair of Twiggys

www.ebay.com/itm/122383386508 still a few hours to go, hovering at $20K

Re: Trip to CHM - Hotel/Restaurant Advice

DeAnza College swap in Cupertino happens on the 2nd Sat of the month. eBay has pretty much killed off anything of value there. On 4/1/17 10:41 AM, Chris Elmquist via cctalk wrote: > Are there any swap meets / flea markets in the area on weekends anymore? >

Re: SimH PDP-8 simulator plays music

On 4/5/17 11:12 PM, Randy Dawson via cctalk wrote: > Have you had a look at Max B. Mathews MUSIC4BF? https://en.wikipedia.org/wiki/MUSIC-N

Re: SimH PDP-8 simulator plays music

https://www.media.mit.edu/events/EMS/bv-interview.html I had a summer gig in the early 80's at EMS helping Steve Haflich with some 68K hardware. I may have Unix MUSIC-11 on a pack somewhere. On 4/6/17 6:17 PM, Al Kossow via cctalk wrote: > > > On 4/5/17 11:12 PM, Randy Dawson v

Re: Tektronix 8560 floppies

On 4/24/17 6:55 AM, Christian Groessler via cctalk wrote: > Hi, > > I've imaged (with ImageDisk) some floppies I've got with my "new" 8560 system. that reminds me I wanted to see if the a.out format was compatible with stock V7 and if the tools would run on an ordinary PDP-11 Unix V7 system.

Re: Sperry UTS 40 on Ebay - Statesboro, Georgia

On 7/28/17 4:35 AM, Bill Gunshannon via cctalk wrote: > > I think I probably still have a manual for that > box around here somewhere. There are brochures and UTS 30 manuals on bitsavers under univac/terminals I should have UTS 40 and 60 manuals scanned somewhere. I don't think I have any

Re: Sperry UTS 40 on Ebay - Statesboro, Georgia

On 7/28/17 4:56 AM, Henk Gooijen via cctalk wrote: > I knew most of the commands (starting with @) plus the options by heart, @ == "Master Space" UW-Milwaukee's first big system was a Univac 1106, which was traded in for an 1100/80 after I left. Just picked up some operator manuals that came

Re: Sperry UTS 40 on Ebay - Statesboro, Georgia

On 7/27/17 10:31 PM, Dominique Carlier via cctalk wrote: > Oh, I have a Sperry Univac UTS 40 and its 8-inch floppy disk subsystem. Do you have any way to image the floppies for it?

Re: The first CD

This isn't "the first CD". The only thing this has in common with them is digital recording on a spiral track. Apparently the seller has never heard of WORMs or knows the history of optical data recording. On 7/28/17 6:19 AM, Sam O'nella via cctalk wrote: > I dont think I've heard if the

Re: The first CD

On 7/28/17 8:20 AM, Al Kossow via cctalk wrote: >> I dont think I've heard if the history of the technology behind cds. Was it >> SRI? Sony. They wrote a book about it.

Re: The first CD

On 7/28/17 8:30 AM, Al Kossow via cctalk wrote: > > > On 7/28/17 8:20 AM, Al Kossow via cctalk wrote: > >>> I dont think I've heard if the history of the technology behind cds. Was it >>> SRI? > > Sony. > They wrote a book about it. > >

Re: Ontel 8" floppy disc drives cabinet

On 9/29/11 6:58 AM, Shoppa, Tim wrote: > Probably from an Ontel OP-1 system in the late 70's or very early 80's. > > The OP-1 was somewhere between a configurable terminal and a dedicated word > processor depending on firmware and peripherals installed. Peripherals did > include 8" floppies

Re: Cleaning a board slightly oxydized ??

On 7/31/17 9:53 AM, william degnan via cctalk wrote: > DE-Oxit? > over an entire board? seems like a really expensive solution to a simple problem has anyone ever determined what the real active ingredient is in that stuff?

Re: WTB: RX02 Floppy Disks

On 8/1/17 10:36 PM, Ulrich Tagge via cctalk wrote: > Looks like I was wrongly under the impression, that there is no way to > reformat, disks to work in an RX02. There is no way to low-level format disks on a DEC RX01 or RX02. The hardware doesn't support it in the controller inside the DEC

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/3/17 7:10 AM, Rick Bensene via cctalk wrote: > I've found much the same with ESDI drives...they tend to die just sitting, > and it's not stiction that seems to be the culprit...they simply quit working. That isn't good news. I still have about 100 drives that came out of Apollo's

Re: Disk imaging with IMD - question

On 8/10/17 1:29 AM, Christian Corti via cctalk wrote: > On Wed, 9 Aug 2017, Chuck Guzis wrote: >> I'll try again--it doesn't matter if the Qume 242 (I've got one) I have a pretty strong dislike for the Qume drives, the 242 in particular seems to like to eat the top side of media. The design of

Re: 5251 emulation

do you have the software? On 8/10/17 2:21 PM, Gary McGill via cctalk wrote: > Anyone interested in Emerald 3x twin emulation? This is a card for a PC, > with software and cable to connect from card to 3x twinax cable, to allow a > PC to emulate a 5251 terminal on a 3x computer. > > Email off

Re: Floppy Disk Images

On 8/11/17 12:12 PM, Mattis Lind via cctalk wrote: > There is a very nice MFM-emulator by David Gesswein. It works very well. I've dumped several hundred 5" drives with it which resulted in added support for many different controllers in his decoder. 8" shugart interface drives are rising on

Re: DEC Unibus, Omnibus and TTL Flip-Chips sought for!

On 8/12/17 3:21 AM, Mattis Lind via cctalk wrote: OK. There haven't been that many replies. The other route is to try to reverse engineer the boards. If it were me, I'd just do a new layout using parts you can still buy today.

Re: Floppy Disk Images

On 8/11/17 10:58 AM, Marvin Johnston via cctalk wrote: I have probably at least 10,000 floppy disks of many flavors (formats, hard sector, soft sector, various TPI and Tracks/disk, 3.5"/5.25?/8", etc.) I've been thinking about this, and you need to organize what you want to read and get this

Re: The SPERRY UNIVAC UTS 40 system + 8406 double-sided diskette subsystem : Restoration

On 8/12/17 6:45 AM, Dominique Carlier via cctalk wrote: > I did not know this type of case for capacitors > > http://www.zeltrax.com/classiccmp_forum/uts40/M2894-63_board03.jpg the black one in the lower left it is a tantalum, which are known to short, try removing them

Re: The SPERRY UNIVAC UTS 40 system + 8406 double-sided diskette subsystem : Restoration

On 8/11/17 5:40 AM, Dominique Carlier via cctalk wrote: > Hi all, > > I continued my investigations about the power supply if the 8406 subsystem. > Here is what I observe: > > With the PSU in charge, I mean with a disk drive connected but without the > +24V : > +5V -5V +12V -12V: OK > If I

Re: nassa tapes destroyed but the family left to dispose of the computer?

https://motherboard.vice.com/en_us/article/kzakkn/nasa-destroyed-hundreds-of-mystery-tapes-found-in-a-dead-mans-basement-apollo-era well, a metal scrapper contacted NASA, so I would imagine with him. at least we know now a little more about where the FOIA request came from On 8/13/17 4:01 PM,

copy of Kildall's "Computer Connections"

just sold for $1600 http://www.ebay.com/itm/Computer-Connections-Gary-Kildall-Father-of-Personal-Computer-Software-/182705906183

Re: VCF?

On 8/13/17 6:34 PM, Steve Malikoff via cctalk wrote: > Anyway I was wondering if it would be possible to get some accurate and > detailed scale measurements of the Alto chorded keyset? I have one that I am cleaning right now, so it is disassembled. I'll put some info up soon.

Re: Disk imaging with IMD - question

On 8/10/17 9:25 AM, camiel.vanderhoeven--- via cctalk wrote: > My workhorse 8" drives are some Ye-Data half-height ones. I still have about > a dozen of them as NOS. Glad they work out for you. Fairlight people like them, so I've been giving them away to them. I wont' try to recover anything

Re: Disk imaging with IMD - question

www.vcfed.org/forum/showthread.php?55277-Selecting-an-8-quot-floppy-drive for someone else's opinion of the Qume PsOS On 8/10/17 9:57 AM, Al Kossow via cctalk wrote: > > > On 8/10/17 9:25 AM, camiel.vanderhoeven--- via cctalk wrote: > >> My workhorse 8" drives are s

Altos 8600 floppy images

www.ebay.com/itm/263105671822 If any of the people who bid against me on these are on the list, here are the disk images. http://bitsavers.trailing-edge.com/bits/Altos/Altos_8000_Family_disk_images/8600_Floppy_Images_Aug2017/ You're welcome.

Re: Line printer art: (was Re: tape baking)

On 7/7/17 11:10 AM, Chuck Guzis via cctalk wrote: > I've puzzled over how to do tape flux-transition recording in any > meaningful way. The way JBI did it was to digitize the capstan encoder as a clock reference for tape motion obliquely referenced in

Re: Line printer art: (was Re: tape baking)

On 7/7/17 10:26 AM, Al Kossow via cctalk wrote: > I stopped beating that horse years ago. And I'm moving towards flux-level archiving and away from using stock tape transports. But then, I've been saying that for 15+ years now and haven't done it.

Re: Line printer art: (was Re: tape baking)

On 7/7/17 9:35 AM, Chuck Guzis via cctalk wrote: > I've voiced my opinion before of being a bit surprised that neither AWS > nor TAP makes any provision for metadata. The tape data bits don't > tell the whole story. I stopped beating that horse years ago. They also assume that all of the

Re: Line printer art: (was Re: tape baking)

On 7/7/17 12:08 PM, Paul Koning wrote: >> And I'm moving towards flux-level archiving and away from using >> stock tape transports. >> >> But then, I've been saying that for 15+ years now and haven't done it. > > It would be great to have that capability, after the company that had it >

Thousandth data book uploaded to bitsavers

As of this morning, there are now over a thousand data books on bitsavers, and well over four million pages in all of the pdfs there. In the middle of June, I got my fifth large databook collection, and didn't have space for it, so I've been doing dedup/recycling and scanning of what I hadn't

Re: Identifying Some SOT-23 Components

On 7/13/17 4:05 PM, Al Kossow via cctalk wrote: > SD is probably a Schottky diode DS

Re: Identifying Some SOT-23 Components

On 7/13/17 3:24 PM, Rob Jarratt via cctalk wrote: > The first appears to be a surface mount transistor (it is labelled "TR2"), > the markings are not very clear. On one board it seems to be marked "1N", > and on the spare it is marked "S1A". Neither of these seem to turn up on the > reputable

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 7/13/17 10:22 AM, Chuck Guzis via cctalk wrote: > It was horrible--the tip would never stay tinned, the glass collector > and hose was always in the way (that glass gets *hot*) and the action > wasn't that good. That was my experience with Weller and Pace, they clogged way too fast and you

Re: Depressing article

Tell me about it. We get a lot of calls from widows in the valley. I have other people deal with it now, because I find going there too depressing. I wonder if the guy had the CDC 160 that would have gone with those 162 tape drives or how much documentation was ignored and dumpstered. On 7/14/17

Re: Depressing article

On 7/14/17 7:45 AM, Ian McLaughlin via cctalk wrote: >> > Why would NASA say “destroy the tapes” ? Because they are a health risk, they have no facilities to recover the data, and someone decided they didn't have a budget to attempt to preserve them given they have no idea what is on them.

Depressing article

https://arstechnica.co.uk/science/2017/07/nasa-computer-engineer-basement/ of events that happened two years ago that had to be obtained through a NASA FOIA request

Re: Thousandth data book uploaded to bitsavers

either. dealing with a truckload of data books for the past month and trying to find all of them in storage to try to see an end to something I've been working on for over 15 years has pushed me over the edge. On 7/17/17 8:02 AM, Toby Thain wrote: > On 2017-07-17 10:11 AM, Al Kossow via cct

Re: Thousandth data book uploaded to bitsavers

I'm not actively soliciting any donations for bitsavers currently because I already have a several year backlog On 7/16/17 7:44 PM, steve shumaker via cctalk wrote: > find the ones you're > missing.

Re: Fwd: [multicians] Fwd: Multics dps8m emulator

woot! there was also a slashdot post about it, with typical clueless response On 7/9/17 11:43 AM, Charles Anthony via cctalk wrote: > -- Forwarded message -- > From: Tom Van Vleck [multicians] > Date: Sat, Jul 8, 2017 at 7:20 AM > Subject: [multicians] Fwd: Multics dps8m

Re: Line printer art: (was Re: tape baking)

On 7/7/17 12:28 PM, Chuck Guzis via cctalk wrote: > It brings up another aspect. I've done a batch of tapes that had > nothing more that the originator's name and an inventory number. Upon > recovering data, the customer had no idea what it meant or how it was > created or even the system

Re: Line printer art: (was Re: tape baking)

yup On 7/7/17 12:33 PM, Chuck Guzis via cctalk wrote: > On 07/07/2017 12:04 PM, Al Kossow via cctalk wrote: > >> >> The way JBI did it was to digitize the capstan encoder as a clock >> reference for tape motion obliquely referenced in >> http://storageconf

Re: Any 7 track drives available?

Can you come up with any HP 7970 drives? I have spare 7/9 track read-only combo head stacks Don't know of how much time you want to spend on it On 7/7/17 2:32 PM, Chuck Guzis via cctalk wrote: > Hi Gang, > > I just got another batch of tapes. While the customer specified 9 > track, there are a

Re: Cipher F880 with S100 interface card on local CL

On 7/8/17 5:18 PM, Chuck Guzis via cctalk wrote: > From his photo, it does appear to be S100-sized. I didn't see any 50 pin connectors, or regulators. If you look closely it's 8-bit ISA. You can see the HD connector on the back

Re: IBM Scientific Subroutine Package (was Re: SIMH .tap file 7 track?)

On 7/11/17 3:31 PM, Randy Dawson via cctalk wrote: > Hi Chuck, > > > Maybe you can answer a related question to the conversion of IBM 360 .tap > files. > > > I see the IBM FORTRAN Scientific Subroutine Package on Bitsavers in .tap > format: > > >

Re: tape baking

yup, the SAM HARBISON ones are classic, esp SPOCK http://q7.neurotica.com/Oldtech/ASCII/ On 7/6/17 10:59 AM, Chuck Guzis via cctalk wrote: > It worked--I retrieved a tape of line printer art from Princeton quite > successfully. Oddly, nobody was interested in a copy of the files.

Re: Thousandth data book uploaded to bitsavers

On 7/14/17 1:42 PM, Tomasz Rola wrote: > So what is the title of a lucky manual? > toshiba/_dataBooks/1988_Toshiba_TLCS-68000_Users_Manual.pdf

Re: Thousandth data book uploaded to bitsavers

On 7/13/17 10:11 PM, Jason T via cctalk wrote: > Many databooks I find are printed on the fragile "telephone book" type > paper, either transparent, beige or both. Do you have any techniques > for getting good images out of those, and making sure they survive the > trip through the ADF? >

Re: Depressing article

On 7/14/17 9:34 AM, Bill Gunshannon via cctalk wrote: > PR black eye? I doubt it. Who, other than the people here, is ever going > to hear about it? anyone who saw the story posted on arstechnica.co.uk today, which is where the original posting points to

Re: Xerox stores

On 7/15/17 9:30 AM, Jon Elson via cctalk wrote: > with eBay, if you are > really interested in this stuff, you can still get your hands on things. To a degree. What shows up there is heavily sorted by the seller in what he thinks he can get money for. It's not like a junk store where a whole

Re: HP 300-series boot rom archive?

On 7/17/17 8:42 PM, Josh Dersch via cctalk wrote: > Yep, I found that one, but it's not useful for actually repairing anything > beyond basic board-swapping. Internally HP maintained Technical Information Packages on their products which actually had the useful information, though it isn't

Re: Repurposed Art (ahem...)

On 7/18/17 8:34 AM, Paul Berger via cctalk wrote: > the keyboard is gone When they die, I hope whoever got it ends up in that special Hell where keyboard collectors go. It has every keyboard they ever wanted, but they have no arms.

Re: Thousandth data book uploaded to bitsavers

On 7/16/17 7:44 PM, steve shumaker via cctalk wrote: > Actually that does trigger a thought... Is there a (simple) way to get a list > of the scanned ones? fgrep _dataB IndexByDate.txt |sort -k 3 gets you a sorted list the current uploaded pdfs that are filed as data books IndexByDate.txt

Re: In search of DEC DZ11 cabling/panel

this is Bob Rosenbloom On 7/22/17 10:58 PM, Glen Slick via cctalk wrote: > http://www.ebay.com/itm/332138639416 >

Re: RK05 head alignment -- how difficult?

On 7/23/17 10:12 PM, Fritz Mueller via cctalk wrote: > "Meh, RK05 alignment is not really that tough, and you would be better off > making sure your heads are thoroughly clean and intact." This, but it really isn't that difficult to keep them clean with an inspection mirror and a good flat

Re: Scsi tape and compatible tapes that are available

On 7/24/17 8:46 AM, Jon Elson via cctalk wrote: > The problem with Exabyte drives is they seemed to have a short shelf life. Most of the rubber parts have failed in the dozens of Exabytes I have. LTO is the direction the world has been going for a while. They have about three generations of

Re: early (pre-1971) edge-triggered D flip-flop ICs

On 7/19/17 4:40 PM, Brent Hilpert via cctalk wrote: > There are near-type cross-refs in the 69 book to the National DM8510, Sprague > NE8828, Sprague USN7474, and Signetics N7474. > > I can take and email you photos of the applicable pages if you like. > Don't have a web site up right now to

Re: early (pre-1971) edge-triggered D flip-flop ICs

On 7/19/17 5:36 PM, Brent Hilpert via cctalk wrote: > I also have the 65 TI catalog, which introduces the 5400 / future-7400 > series, but the family is only half-a-dozen packages of gates and the 5470 FF > at that point. > I started scanning Allied Electronics catalogs since they give

Re: IBM Scientific Subroutine Package (was Re: SIMH .tap file 7 track?)

On 7/11/17 3:36 PM, Al Kossow via cctalk wrote: > > On 7/11/17 3:31 PM, Randy Dawson via cctalk wrote: >> Hi Chuck, >> >> >> Maybe you can answer a related question to the conversion of IBM 360 .tap >> files. >> >> >> I see the IBM FORT

tape baking

https://strandgames.com/blog/magnetic-scrolls-games-source-code-recovered and now we know why all the questions were asked recently

Re: tape baking

On 7/4/17 7:53 AM, Noel Chiappa via cctalk wrote: > > From: Al Kossow > > > You need moving air, though. > > I'm not sure how you do that well in a TK50 style cartridge. > > Hmm, maybe not? I start with the need for moving air - which I do not > dispute, just wondering what the

Re: M9301-YB ROM flaky

I pulled out the M9301 and M9302 drawings from the set and uploaded them to bitsavers dec/unibus On 7/4/17 8:34 AM, Noel Chiappa via cctalk wrote: > As Mattis says, they are in the 11/04 drawings (MP00019). But I'm a bit > puzzled why you didn't find them online; I have a page, "'Missing'

Re: Tools, Craftsman (Was: Model M case screws

On 7/2/17 2:15 PM, Chuck Guzis via cctalk wrote: > Some brands have suffered badly under the shadow of acquisition. Klein > used to be the best source for small pliers and cutters, but my > experience with them lately has not demonstrated that. Xcelite was never the greatest stuff in the

Re: Model M case screws

> On Sun, 2 Jul 2017, Chuck Guzis via cctalk wrote: >> About the best advice I've heard in this respect was "if you're looking >> to assemble a good assortment of hand tools, make an offer for the >> contents of the toolchest to the widow of a recently deceased mechanic." service cases and

Re: Steve Garcia / Micromint SB180

On 7/2/17 11:26 AM, Straight Up Productions via cctalk wrote: > How would you take payment for shipping? I am interested, though I am in > the USA. Has the firmware and OS been archived somewhere? I just scanned and pdf-ed the manual, waiting now for some disk space to free up on the

Re: tape baking

On 7/3/17 11:49 AM, Alan Frisbie via cctalk wrote: > So, what are the currently-recommended tape baking temperatures and times? In the range you're using. You need moving air, though. I'm not sure how you do that well in a TK50 style cartridge.

Re: Dobbertin 4003 Eprommer driver, moldy floppy rescue in .de?

On 7/4/17 10:55 PM, Arno Kletzander via cctalk wrote: > A quick look on the media surface however revealed a multitude of tarnished > spots that look to me like fungus growth. Having read about dirt and fungus > on media, moisture causing sticky shed syndrome, cleaning and baking >

Re: Steve Garcia / Micromint SB180

argh.. forgot there was already a micromint dir, so I moved it there On 7/5/17 5:13 PM, Al Kossow via cctalk wrote: > it will be under microMint early tomorrow > > On 7/5/17 12:32 PM, GerardCJAT via cctalk wrote: > >> PLEASE, under what directory you put the pdf of the manual ?? >> >

Re: Steve Garcia / Micromint SB180

it will be under microMint early tomorrow On 7/5/17 12:32 PM, GerardCJAT via cctalk wrote: > PLEASE, under what directory you put the pdf of the manual ?? >

Re: tape baking

On 7/6/17 9:47 AM, Mark J. Blair via cctalk wrote: > Maybe I could make a machine to allow me to unspool a TK50 tape while wiping > on cyclomethicone and then re-spool it, perhaps by hacking up a drive > mechanism. > It evaporates too quickly. I have also seen it dissolve binder if you use

Re: Ford-Higgins Powerframe QBUS Docs

On 4/25/17 1:46 PM, Jason T via cctalk wrote: > It has a combo fixed-disk/cart drive that their docs > call an RC40. Amcodyne 7110 Arapahoe competitor to the CDC 9457 Lark

Re: Ford-Higgins Powerframe QBUS Docs

nope. wonder if the 68k board was from Integrated Solutions On 4/25/17 4:52 PM, Jason T via cctalk wrote: > On Tue, Apr 25, 2017 at 6:38 PM, Al Kossow via cctalk > <cctalk@classiccmp.org> wrote: >> On 4/25/17 1:46 PM, Jason T via cctalk wrote: >>> It has a

Re: Attaching DEC Handles, the Right Way

On 4/26/17 8:06 AM, jim stephens via cctalk wrote: > Stu Phillips, a friend of ours did the insertion of metal metal Southco > extractor handles on our boards for the > Microdata 1600. He probably had a machine, as the Southco levers were > riveted onto our board thru holes in the corner >

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