- test-drb@ccmp.vtda.org - classiccmp.org

by vcf＠siconic.com

...or is this getting a bit out of hand by now? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5197990680&rd=1&sspagena… -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 3 months

8
9
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Fw: "a taker for the ASR-35?"

by vrs＠msn.com

Hi, I have been in correspondence with Marvin Jones (not a list member), and he has an ASR-35 he needs to give away pronto. You'd need to pick it up in Gunnison, CO before the 10th. Is there anyone here who can help him? Or should I head over to Greenkeys and see if anyone there can help him? Vince ----- Original Message ----- From: "Marvin L. Jones" <jonz at config.com> To: "Vince Slyngstad" <v.slyngstad at verizon.net> Sent: Tuesday, May 24, 2005 11:57 AM Subject: Re: "a taker for the ASR-35?" > On Tue, 24 May 2005, Vince Slyngstad wrote: > > >> >So, did you find a taker for the ASR-35? I'd love to take that, but I > >> >can't get to you before July, so I hope someone else can take it. I'd > >> >hate to hear that it got recycled! > >> > >> Nope, no takers. Next week I pay Waste Management approx $25 to haul > >> it to the dump. True, it's too bad -- but, I gotta get on with my > >> life (and this %$#@&! move 'cross state.) > > > >Maybe you'd let me post a note to the classic computer miling list, or even > >the TTY (Greenkeys) mailing list? Surely someone wants it! > > Sure. Go ahead. I do not know those lists, myself. (Tho', I felt > there had to be some.) But, I need a guaranteed pick up of no later > than Friday, June 10 here in Gunnison, Colo. And, I need to hear > from someone, Real Soon Now, > > As you may remember: It's free, and I have KSR-35 maint./wiring doc's. > The case of 24" spools of oiled paper tape are gone. But, I have some > smaller rolls that haven't been heaved over the side, yet. > > Regards, > Jonesy > -- > | Marvin L Jones | jonz | W3DHJ | linux > | Gunnison, Colorado | @ | Jonesy | OS/2 __ > | 7,703' -- 2,345m | config.com | DM68mn SK

21 years, 3 months

1
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Question about PDF manipulation

by vcf＠siconic.com

This is sort of off-topic but it's for a Computer History Museum project that involves old computer brochures. We have a bunch of PDF's that have scanned brochure images contained within including the OCR'd text. Unfortunately, the PDF's were created with images files that are much too large. The images need to be extracted, re-sized, then re-inserted into the PDF. They can't use the original photos because the ones inside the PDF have been cropped and edited (independent of the originals...don't ask). Is there a combination of utilities (i.e. ImageMagick, tumble, etc.) that can automate this instead of having to re-create each PDF from scratch? There are hundreds. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 3 months

3
2
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HP DC100 tapes

by vcf＠siconic.com

I have a couple HP DC100 tapes that I'm going to attempt a dump from. I'm told they were written on a 9845. I don't have a 9845 (still regret the one I missed years ago). Can these be read on a 9830B? What about an HP 85? Any info appreciated. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 3 months

3
5
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New AIM-65!

by rigdonj＠cfl.rr.com

Found this today. I opened the case and immediately recognized the AIM-65 even though it was under the panel. Bought it, brought home, opened it up and sure enough it IS an AIM-65. It powers up and appears to work. BTW the machine appears to be a magnetic card encoder/reader. Paperwork with it indicates that it came from a nuclear weapons plant that's operated by GE and located here in Florida. <http://www.classiccmp.org/hp/AIM-65/>. No text or links but the picture titles should clearly indicate what each picture is. Joe

21 years, 3 months

1
0
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PDP11/23+ Error code question

by pete＠dunnington.u-net.com

On May 24 2005, 18:48, Jim Beacon wrote: > I will try to get the machine to run the existing RL02 boot, as this was > intended to allow you to run XXDP, and also RSX11 (there are some specialist > diagnostics written to run under RSX11, so if I can find the right disks, I > should have a ready built operating system!). If not, I believe there are > copies of the original boot ROMs available on the net. Yes, for example my collection at http://www.dunnington.u-net.com/public/DECROMs/ The originals would have been 23-339E2 and 23-340E2. -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

1
0
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Sage MainLAN ISA Adapters

by roger161uk＠yahoo.co.uk

Hi Folks, I have two Sage MainLAN ISA adapters dating back to 1988. MainLAN was an early local area network system based, it appears, on some form of serial daisy chain. I seem to remember having stored away the manuals, and possibly the disks/drivers for these boards (for DOS, of course) and would like to know if anybody is interested in these boards. If not ... they'll probably become landfill - but I'd just like to check before I bin a bit of history :-) Roger ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

21 years, 3 months

1
0
0 0

Better indexing on bitsavers

by aek＠bitsavers.org

a much better delimiting character for anything you do is the vertical line | because it rarely if ever shows up in text either machine generated or hand-written -- There are four of them in your .signature

21 years, 3 months

3
2
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zip

by dwight.elvey＠amd.com

>From: "Vintage Computer Festival" <vcf at siconic.com> > >On Thu, 19 May 2005, Kevin Handy wrote: > >> Do you believe future people will be that much stupider than people >> are today, and that all information about computers will have been >> totally lost? > >I think this assumption needs to be made. It's safer. > >> Make the archive useful to us, now. Let people 500 years from now >> figure it out for themselves. > >That's not the definition of an "archive". You're thinking of a library. > Hi Sellam I've been trying to explain the difference between an archive and distribution of data. So far, they just don't get it. Dwight

21 years, 3 months

3
2
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uA3656

by marvin＠rain.org

I checked the 1977 IC Master, and the uA3656 is not listed. It does say that the uA prefix is the Fairchild linear series. In going through the Fairchild catalogs, I too have been unable to find any references, and am now curious if the number is correct. > I have a catalog from 1969 which lists their MOS parts in the 3xxx > range. > They didn't make RAM in 1969, will try to dig out an > early 70s catalog to try to find 3656's (I'm guessing they will be in > the '72 or '73 ones).

21 years, 3 months

2
1
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PDP 11/45 light chaser

by GOOI＠oce.nl

RE: PDP 11/45 light chaser >>>>> "Gooijen" == Gooijen H <Gooijen> writes: Gooijen> The drawback of the light chaser program that uses the RESET Gooijen> instruction is that the heads load and unload of the RX02 Gooijen> drive in my PDP-11/40. That clunck-clunck sound is not Gooijen> pretty for a longer while ... > So start up the KW11L clock, point its vector to an RTI, and use a > WAIT instead of a RESET... > > paul Hmm, I thought that the RESET instruction provides the ~100 ms delay so that the lights are visible (on the 11/35 they are LEDs anyway) but this instruction also asserts the RESET/ (BUS INIT-L ?) signal. That is what makes the RX drive clunk - at least that's what I thought. - Henk, PA8PDP.

21 years, 3 months

2
1
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PDP11/23+ Error code question

by jim＠g1jbg.co.uk

Another rescue from the works scrap pile.... I have an OEM 11/23 PLUS, which is based on a quad height chassis (H9875A?), with an 11/23+ cpu, two memory cards, and an RLV12 disk controller (there were a number of other cards, two DEQNA (dual ethernet installation), an OEM video interface, DLV11, and an OEM system ID card (this places a 4 bit octal value in a register that can be read via the bus). These cards have all been removed and replaced with grant cards). The system originally booted via ethernet, and the RLV12 was only installed for standalone diagnostics, hence the cut down version. When the unit is powered up, there is no output to the terminal, and the processor fault LED's give a code of 14, which is listed as "Scope Loop" - does anyone know what this signifies? I have set the boot switches to the factory test settings, with RL02 boot, and the SLU's are set to 9600. The other jumpers all appear to be correct. Thanks Jim. Please see our website the " Vintage Communication Pages" at WWW.G1JBG.CO.UK

21 years, 3 months

3
3
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EAI Analog Computers

by dwight.elvey＠amd.com

>From: "William Donzelli" <aw288 at osfn.org> > >I have a pair of EAI TR-48 analog computers that I really need to part >with. These are circa 1960 machines. From Mr. Cowards site: > >Operating range: +/- 10 volts DC >Computing Elements: Up to 58 DC amplifiers > Up to 115 Coefficient setting potentimeters >Options: Up to 24 integrators > >These are large machines, so if you are located far away from Carmel, NY, >you would need to call a mover (I could deliver withing a few hundred >miles with some arm twisting). One machine has the original operating >desk, plus there are a few extra patchpanels, lotsa cords, modules, and >other good stuff. > >Any interest on this list? If so, I should start digging these out of >storage. > >These are for sale, but I would consider trades of old mainframe or >minicomputer stuff. > >William Donzelli >aw288 at osfn.org > Hi William It is on the wrong side of the US for me :( Dwight

21 years, 3 months

1
0
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Selling medium old software

by paulrsm＠buckeye-express.com

> The guy probably went broke in a spectacular way > (I can't imagine what kind of debt he might have > gotten into buying such a huge supply of Atari > carts, and then renting a salt mine to store and > sell them). Now he doesn't exist, and no one links > to him or ever really linked to him (maybe if they > had, he would have gone broke in a less spectacular > way). Bzzt. Thank you for playing. Salt mine with lots of Atari games: http://www.oshealtd.com/ -- Paul R. Santa-Maria Monroe, Michigan USA

21 years, 3 months

1
0
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Selling medium old software

by cb＠mythtech.net

>>> remaindered Atari 2600/5200 cartridges >> Is that the guy that was housing them in an old salt mine? > >Bingo, yes, that triggers my memory. But isn't enough to find >any references in Google. What does that mean? Is there some >universe that exists in your and my memory but not in Google's? :-). The guy probably went broke in a spectacular way (I can't imagine what kind of debt he might have gotten into buying such a huge supply of Atari carts, and then renting a salt mine to store and sell them). Now he doesn't exist, and no one links to him or ever really linked to him (maybe if they had, he would have gone broke in a less spectacular way). Since google works on how many people link to a page, he might be the last link on some odd search combination of 'Atari Salt "Insane sales ideas"'. I don't know about your mind, but mine doesn't work based on how many times something is linked to from something else. Mine works on some strange as yet to be fully determined system of storing totally useless tidbits of information while disposing of the important things like what my wife told me this morning to pick up on the way home (still don't remember, and she won't tell me, and the fact that I remembered a guy sold Atari carts out of a salt mine has made her stop telling me anything for the night... which I have yet to decide if that is really a bad thing or not). -chris <http://www.mythtech.net>

21 years, 3 months

3
2
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Bad EEPROM on 11/84

by dundas＠caltech.edu

I could use the collective wisdom of the list. I have an 11/84 (M8190) with what appears to be a bad configuration EEPROM. [The symptoms are that at boot the system attempts to boot and immediately drops into ODT rather than testing memory and the setup menu. Replacing the EEPROM with a known good one from another board cures the problem.] I'm trying to learn more about the EEPROM but haven't had a lot of luck yet. It appears to be a Xicor X2816AP, 24-pin, DIP. This seems to be a 2k x 8bit EEPROM, but I haven't found out much else yet. I would like to find a replacement for the EEPROM. Two questions: 1) Any recommended sources for such parts out there? 2) Any suggestions on how to initialize it? Perhaps just leave it zeroed? Or copy a known good one? Thanks, John

21 years, 3 months

1
0
0 0

PDP 11/45 light chaser

by pete＠dunnington.u-net.com

On May 22 2005, 20:49, Jay West wrote: > Jim wrote.... > > Location Content Op-code comment > > 001000 012700 mov #1,r0 load ro with 1 > > 001002 000001 > > 001004 006100 rol rotate r1 left > > 001006 012701 mov delay r1 load register r1 with delay > > 001010 007777 delay > > 001012 005301 dec r1 decrement register 1 > > 001014 001376 bne -2 continue to decrement r1 until > > r1=0 > > 001016 000772 br -12 back to 001002 (dec r0) > > This runs on my /45, but produces a steady light display, not a cylon or > "blinking" effect. I'm not much of a Unibus expert but I seem to remember there's something odd about what's displayed in the lights, and how you get it to change. > It's been decades since I looked at '11 assembler. I'm > confused about something in the listing above. If the 012700 at location > 1000 is a load r0 with 1, I'm guessing the next word (1002) is the constant > to be loaded? So, why would the branch at location 1016 go back to the data > at 1002? Obviously there's something I'm missing. The code is correct, the comments are correct, but the mnemonic instructions are wrong :-) Remember that what's counted in a BR instruction are words, not bytes, but that when the instruction is interpreted, the PC has already been incremented. So 777 is a "branch to self", and 776 is "branch back to the previous instruction". 1376 is "branch back to the previous instruction if Z is set", as at 1014. 772 does indeed branch back to the ROL instruction, because it's "branch back 6". Looks like Jim remembered that "branch back to the previous" is "br -2", thought "two bytes", and just doubled the six to twelve -- except that what he wrote was octal 12 (there's no decimal point after it), or ten decimal :-) Actually, if I'm being really picky, it should be "br .-2". -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

3
2
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Anyone know this guy!?

by leeedavison＠yahoo.co.uk

> And if so, can you explain what he's smoking? Errr, no. Going by the numbers from the two pages he's been shifting 25,000 peices each year with 7 tears of stock left. I also see it's an auction with a starting price of $199k but no reserve?! How does that work? Surely the starting price IS the reserve because I sure as heck can't bid $1 and have it accepted. Lee. . ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

21 years, 3 months

2
1
0 0

Better indexing on bitsavers

by julesrichardsonuk＠yahoo.co.uk

On Fri, 2005-05-20 at 09:55 -0700, vrs wrote: > > It's *could* - problem I've always found is that tools to handle multi- > > image TIFF files are pretty thin on the ground; they either don't bother > > at all (and assume one image per file) or they try and buffer the whole > > lot into memory (for 100 A4 page scans in one file, that's Not A Good > > Thing). Only about 20% of tools I've come across over the years actually > > try and handle TIFFs properly (as I've said in the past, even > > Imagemagick isn't great because it buffers data to 32-bit colourspace in > > memory regardless of the actual images' bit depth) > > The spectacular badness of TIFF viewers (at least at the free-as-in-beer > level) is why I prefer PDFs. Despite their problems, the PDF viewers seem > *way* better at rendering (and printing) the pages. (Though I am sure there > are other platforms which have no decent PDF viewer.) Acrobat seems to be the only one under Linux that works well with PDFs full of image scans, but the fact that Adobe have bloated it out to nearly 100MB for the viewer has annoyed me somewhat. Ghostscript doesn't seem to render with particularly good quality, and all the other viewers I've tried seem rather incapable of dealing with the physical size of PDF files that are wrapping document scans (I assume it's another one of those situations where they're trying to buffer the whole damn file into memory at once) Presumably other Unix platforms suffer the same problems as they're largely reliant on the same tools. How Adobe mange to make Acrobat eat up 100MB of space is beyond me though... :-( I can't say I've found many bad TIFF viewers for single images though (on any platform); it's only when multiple images are put into the same file that a lot of tools start falling over. cheers Jules

21 years, 3 months

7
9
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SGIs and 64-bittiness

by Saquinn624＠aol.com

IP26&28 Indigo2s, all Onyxes, Origins and big Challenges are also full 64-bit. But, that doesn't really mean much practically speaking- almost everything is compiled in n32 "hybrid" mode, which will run on any R4k or better with IRIX 6.2+. In fact, n32 is what SGI recommends becasue it's faster in processing and, I believe, slightly more memory efficient.

21 years, 3 months

2
1
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Oops ! Please ignore my reply just now -- RE: Also ... RE: Anyone know this guy!?

by news＠computercollector.com

Meant to send that "maybe he's donate" message to my local club. Sorry. -----Original Message----- From: Evan [mailto:evan947 at yahoo.com] Sent: Tuesday, May 24, 2005 12:16 AM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: Also ... RE: Anyone know this guy!? Maybe he'd consider donating parts of the collection to MARCH. -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Computer Collector Newsletter Sent: Tuesday, May 24, 2005 12:08 AM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: Anyone know this guy!? And if so, can you explain what he's smoking? http://www.clelsplace.com/eli/ The press release attached to this link is dated May 21, 2005. Oddly, it appears he did the same thing in 2002: http://yahoo.pcworld.com/yahoo/article/0,aid,104772,00.asp ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see http://groups.yahoo.com/group/midatlanticretro/ *** Tell your friends about the (free!) Computer Collector Newsletter - 725 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 3 months

1
0
0 0

EAI Analog Computers

by aw288＠osfn.org

I have a pair of EAI TR-48 analog computers that I really need to part with. These are circa 1960 machines. From Mr. Cowards site: Operating range: +/- 10 volts DC Computing Elements: Up to 58 DC amplifiers Up to 115 Coefficient setting potentimeters Options: Up to 24 integrators These are large machines, so if you are located far away from Carmel, NY, you would need to call a mover (I could deliver withing a few hundred miles with some arm twisting). One machine has the original operating desk, plus there are a few extra patchpanels, lotsa cords, modules, and other good stuff. Any interest on this list? If so, I should start digging these out of storage. These are for sale, but I would consider trades of old mainframe or minicomputer stuff. William Donzelli aw288 at osfn.org

21 years, 3 months

1
0
0 0

IBM PC, XT, Tandy 1000, TRS-80 available in NJ

by cb＠mythtech.net

Ok, time to reduce inventory again and get rid of more stuff that I haven't gotten around to playing with. I've got a few IBM PCs (5150), IBM XTs (5160), a Tandy 1000, and a TRS-80 (model 3? The silver all in one unit) All are available free for pickup in Northern NJ (Ridgewood, 07450). Right now I'm not willing to ship (well, I am, but you better offer me something to make it worth my time/effort, if I had the interest in shipping, I'd try them all on ebay first) All are also free if you pick them up. I'm not in any huge rush to get rid of them, but the sooner the better (ie: they are in no danger of being thrown out and I am willing to hold for a reputable person that I honestly believe will actually show up to get them... don't do what I did to poor Dave in CT and take well over a year to drop off a tape deck I owed him). I only have one TRS-80, it does not have any floppy drives, software, or anything else. I only have one Tandy 1000, but it has the keyboard, monitor, and printer (humm... actually, it may not have the keyboard, I'd have to double check). No software or anything else. I have a few IBM PCs and IBM XTs, I'm not 100% positive on the counts on either. I may or may not have monitors to go with them, but I should have keyboards (I should also have at least two monitors, plus I believe a broken mono for the PC that I never got around to doing the repair Tony explained to me). I don't currently have any software or otherwise for them, although I believe some have hard drives, and I have no idea what may or may not be on those. None of the above are tested right now, but if someone is honestly interested in picking anything up, I'm willing to do any testing I can before you take the time to drive and get them. I'm also willing to drive within reason to deliver them, but I'd like something in return if I do (I prefer something cool in trade, I like things made by Apple, but I'm also in desperate need of some kind of tablet computer or similar I can use as a basic eBook reader, I may also be interested in other items) -chris <http://www.mythtech.net>

21 years, 3 months

1
0
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Classic DEC picture from "American Used Computer"

by shoppa_classiccmp＠trailing-edge.com

In the 60's and 70's, there was an outfit called "American Used Computer" in Mass. Based on what I've seen, they took reject PDP-8's, -9's, -10's, -11's, Novas, etc., from dumpsters and tried to reconfigure them into saleable (maybe not workable!) systems. (Sort of the same way Poly Paks took cast-offs parts from the same companies and sold them.) Anyway, a truly classic picture of dozens of H960 racks filled with stuff and the proprietor is online if you go to http://www.nixiebunny.com/ and click on the picture at the "American Used Computer" link. By the time I was into this stuff, the outfit was long out of business, but my colleagues told legends about the mismatched boards they put together and tried to sell as complete working systems :-). Tim.

21 years, 3 months

5
4
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cc65 for AIM 6, paper tape format text files?

by andyda＠mac.com

Hi Thanks again for all the help and encouragement my AIM65 lives. The last H/W problem was serial comm between my Mac and the AIM 65. Mike Stein devoted quite a bit of time and email helping me to get it working. Now I can transfer data between the AIM 65 and the Mac. Now all I need is a way to convert cc65 object files into Mos Technology Paper Tape Format text files so I can transfer programs assembled/compiled on the Mac to the AIM and use the Mac to store data from the AIM in paper tape format text files. I have been asking around but I can't find anyone who has written a converter to convert from cc65 object file format to paper tape format text files. Anybody here ever done such or have any info which might help me do it myself? Any help much appreciated, Andy

21 years, 3 months

1
0
0 0

Selling medium old software

by cb＠mythtech.net

>On a similar note, sometime in the mid-90's some guy bought out >millions of remaining Atari 2600/5200 cartridges, and started selling >them on his website. I cannot imagine him selling them all! >Although I could see how he might get tired or bored of the same >old thing... > Is that the guy that was housing them in an old salt mine? -chris <http://www.mythtech.net>

21 years, 3 months

3
2
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Datasheet or info for Fairchild uA3656D?

by dwight.elvey＠amd.com

>From: "Vintage Computer Festival" <vcf at siconic.com> > >On Thu, 19 May 2005, Joe R. wrote: > >> Are you sure you're not thinking of the Sim-8? That's what's shown in >> the 8008 manual. If you have other drawings I'd like to get a copy. > >What 8008 manual are you referring to? I'd like to see a picture of a >SIM-8 so I can compare it against the one I have and to also hopefully >help me track down the CPU board. > Hi Sellam Look at the 8008 manuals on Al's site. They show a SIM-8. The entire setup is similar to my SIM-4 except that the CPU board is wider. Dwight

21 years, 3 months

1
0
0 0

Selling medium old software

by dwight.elvey＠amd.com

Hi I just saw article # 23439 on the inquirer about a fellow that has a collection of "old" software. On checking the article a little more, I find that "many of which are for non IBM PC machines". Wow! Some for such RARE machines as Commodore 64 and Apple II. He expects to auction it off starting at $199,000 It seems to be truck loads though. His pricing does seem a little high. My heart flutters with excitement. Dwight

21 years, 3 months

2
1
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Datasheet or info for Fairchild uA3656D?

by ajp166＠bellatlantic.net

> >Subject: Re: Datasheet or info for Fairchild uA3656D? > From: "Dwight K. Elvey" <dwight.elvey at amd.com> > Date: Thu, 19 May 2005 09:54:14 -0700 (PDT) > To: cctalk at classiccmp.org > >>From: "Joe R." <rigdonj at cfl.rr.com> >> >>At 05:17 PM 5/18/05 -0700, Dwight wrote: >>>Hi >>> There is a good chance it is an interface part. >>>Remember the 8008 bus is not TTL. >> >> ???? Ok then what is it? The first page in my Intel 8008 manual says >>"TTL Compatible (Input, Output and Clocks)". Or am I missing something? >> >> Joe >> >> > >Hi Joe > My bad. The spec sheet shows that it will work with TTL. >The inputs can go to VDD but don't need to. >Dwight > My Databooks and drawings from when I was designing with the beastie says with +5 Vcc and -9Vdd all IO will be TTL compatable. FYI back in that time frame Signetics, Intel and Fairchild had a DTL/TTL product in the 3xxx class numbering. For example: 3205 similar to 74138 may be differnt pinout 3009 similar to 7432 9602 onshot similar to 74123 however the 9602 was truly a better part. 3404 8bit wide latch maybe similar to 74100 or 74373 1101 256x1 Pmos (two voltages) and really slow (1.5us parts were the fast ones) There were others but those appear on my drawing and those of the MCS-8. The greatest part of that era, 2102 1kx1 1us (initial pricing $16 ea). Allison

21 years, 3 months

4
3
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Better indexing on bitsavers

by aek＠bitsavers.org

On a separate post I mentioned cross support/cross linking. It was my clumsy way of saying indexing. I would be nice if people pitched in and just did it. I may make a list of all of the chips listed in the individual PDF's that Al has posted for the westerndigital datasheets. If Al then posts this index with the PDF's (or creates an index folder) so the googlebot can scan it then a google search would point you where to get it. Simple with the task easily shared amoung many people. -- That would be a wonderful thing. I have a HUGE backlog of scanned databook material, and just finished picking up almost 40 book boxes of 70's -> 90's data books from a third large collection. The first was from the databook collection of Haltek Electronics (RIP), the second from a private collection that was given to us with the promise that it would be scanned, and now this addional one. (I've found a few interesting things in the last lot already.. A copy of the Fairchild '69 data book, a book by Gnostic Concepts on early 70's memory technology, and two of the classic error correcting codes books) There is no way I'm going to have time to OCR or index this. A simple text file per PDF with part number and page number would be wonderful. This is also the sort of data that Google seems to index REALLY well. Watching the hits on bitsavers, almost everyone finds the archive by stumbling upon the 'whatsnew.txt' or 'Index.txt' files. I'd be interested in suggestions for what books should be higher on the post-processing queue too. I probably have 50 databooks scanned but not PDFed right now. I've been concentrating mostly on getting the classic early stuff done first (2nd Edition TI TTL Data Book, etc.)

21 years, 3 months

9
19
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zip

by dwight.elvey＠amd.com

>From: "Tim Riker" <Tim at rikers.org> > >Dwight K. Elvey wrote: >>>From: "Vintage Computer Festival" <vcf at siconic.com> >>>That's not the definition of an "archive". You're thinking of a library. >> >> I've been trying to explain the difference between an archive >> and distribution of data. So far, they just don't get it. > >Sure, I get it. A Library is an Archive that is Useful. =) > Hi Just as an square is a polygon. Dwight

21 years, 3 months

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Dayton aquisition - Socket-brand S-I/O PCMCIA card question

by ethan.dicks＠gmail.com

What could be one of my more interesting scores is a Socket-brand (www.socketcom.com) S-I/O PCMCIA serial card for $2. Natually for that price, it has no dongle. Dongles for modern Socket products (they make CF serial as well as 3.3V PCMCIA serial) are available new, but I was curious if anyone here has ever worked with these cards and might know if the dongles might be the same? The places selling the dongles list the compatible card part numbers, but this card does not visually match their current offerings, and it's not obvious what the model number is, except perhaps "S-I/O". The numbers below the compatibility glyphs on the back are "8010-00012 L" (which _might_ be a part number, but does not match the ones the dongle mates with), and what is almost certainly a serial number, "0011001592". Of course since I have your attention, I might as well ask if anyone happens to have a Socket-brand serial dongle that would be available. Anywhere from free/postage to a few bucks would be fine, especially if it's known to work with this older card. Thanks, -ethan

21 years, 3 months

2
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Information on the ADAM computer

by cmurray＠eagle.ca

Glen, I have been an ADAMphile for some 20 yrs. The best information on my favorite orphan computer can be found at mailman at adamcon.org The ADAM community thrives today. Computing forever! Murray-- Message: 10 Date: Sun, 22 May 2005 19:11:18 -0400 From: Glen Goodwin <acme at gbronline.com> Subject: Snagged an Adam To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Message-ID: <42911196.7010503 at gbronline.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Got it free from a FreeCycle post. It's in pretty good shape, including the printer/power supply, main unit, two hand controllers and keyboard. BUT -- no software or manuals. On power-up, it kicks into typewriter mode. Pushing the right-hand reset button puts it into Colecovision "game" mode. How do I get to the operating system in this beast? Any pointers to a user manual on the 'Net? Parts of the tech manual are available, but the EOS ("elemenatry operating system") portion appears to be missing. Any help, pointers, magic incantations greatly appreciated. Glen 0/0

21 years, 3 months

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Apologies Re PDP11/45 light chaser

by jim＠g1jbg.co.uk

I should never try to type code and comment it at midnight after a couple of glasses of wine............. :-) Apologies Jim. Please see our website the " Vintage Communication Pages" at WWW.G1JBG.CO.UK

21 years, 3 months

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PDP 11/45 light chaser

by jim＠g1jbg.co.uk

Jay, this is the one I used: Location Content Op-code comment 001000 012700 mov #1,r0 load ro with 1 001002 000001 001004 006100 rol rotate r1 left 001006 012701 mov delay r1 load register r1 with delay 001010 007777 delay 001012 005301 dec r1 decrement register 1 001014 001376 bne -2 continue to decrement r1 until r1=0 001016 000772 br -12 back to 001002 (dec r0) it's not elegant, but you do get to see the lamps light, you can change the speed by altering the "delay" value. It doesn't work to well, as the data display will show the load of r1 as well. Yo should be able to alter it to put the lght chaser into the console display register (you'll have to re-calculate the value of the final branch - it will need an extra two memory loactions, one for the mov display register instruction, and one for the location of the register). I haven't got this to work on my 11/45, as I get a memory address error when I try to write to the display register, though I'm told I should be able to write to it - I think there is a processor fault lurking in there somewhere, or possibly a fault in the memory management module, though this is less likely, as I can read and write to the DL11W serial port. Jim. Please see our website the " Vintage Communication Pages" at WWW.G1JBG.CO.UK

21 years, 3 months

6
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Kludge Komputer notes and CDC 8092 manuals

by aek＠bitsavers.org

I also loaned him two of the Kludge Komputer Kompany articles from Datamation. They showed up on this list recently too. And I'm certain they will be enjoyed by those who haven't seen them before. -- up now in http://www.bitsavers.org/pdf/datamation Hans, the 8092 mans should be up later today..

21 years, 3 months

1
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small valves

by dwight.elvey＠amd.com

>From: "Tom Jennings" <tomj at wps.com> > > >If you just want to play and make a 4 x 4 core or something, I >wonder if you couldn't get decent hysteresis with some other >ferrite product. You could compensate for a "poor" core with good >electronics and/or brute force. I haven't looked at a toroid spec >sheet in ages and not for hysteresis. > Hi Many of the cores designed for RF will take a magnetic set. One normally doesn't do it intentionally because it changes the inductance but they can be magnetized. Dwight

21 years, 3 months

1
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Dysan Interrogator

by Watzman＠neo.rr.com

Re: "While sorting stuff today, I came across the Dysan software for testing floppies. We used to use this for testing many of the early full size and half height 5 1/4 floppies. Dated 1985, 5 disks and manual in a plastic wallet binder. I was going to put it up on eBay but realised that maybe someone on the list would get more benefit from it. Would rather see it go to a good home than make a dollar or two from it. Let me know. Billy" While the digital diagnostic disks themselves cannot be duplicated, the programs that analyze the disks are just normal EXE files. You should be able to copy those, and then you could both sell the originals and also make the analysis programs available. In my case, I have the DDD disks, but not the programs to run the analysis. [Although I'd like to get a 3.5" disk]. By the way, it's Dysan, not Dyson

21 years, 3 months

1
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Foam pads for capacative keyboards

by Watzman＠neo.rr.com

I would also be interested if there is a large order being put together for the Keytronics keyboards foam pads (depending on the price, of course). [Barry Watzman, Watzman at neo.rr.com]

21 years, 3 months

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ParSiFal T-rack transputer system

by julesrichardsonuk＠yahoo.co.uk

We've got one of these critters on the way - it's a 64-processor system in a crate, apparently with transparent case so that the inside can be seen.(ooh!) I believe the CPUs are T800's... Anyone able to tell me anything more about the ParSiFal project though? (Ram?) Info via Google seems extremely thin on the ground. I'd quite like to find out what I can in advance. From what I've been told, a few of these were built by Manchester (UK) uni for SERC, but that's about the total of what details I have at present. I'm not sure what, if any, documentation or software it'll be coming with, what state it's in etc. yet.... SERC still exist, so I'll give then a prod after I've picked the thing up in case they have archives of software from the project still. cheers Jules

21 years, 3 months

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SGI Indigo2 IMPACT questions

by Saquinn624＠aol.com

IRIX versions for SGIs can be a pain. The easiest recommendation is as follows For Indigo2 forget 5.3 unless you're running a minimum system. There are many many different versions for specific hardware and they are hard to get a hold of the right one. Doesn't run at all on anything other than IP22 (R4400) on the I2, not POSIX complient so you'll have trouble building your own S/W. For most Indigo2s what you want is IRIX 6.2- fast, POSIX/Y2k complient (when patched) and smallish. It also has 64-bit XFS. You want at least 64 MB. For Indigo2 R10000 you need a special release (th only one for 6.2), IRIX 6.2 with Indigo2 IMPACT 10000 (this release will run on all Indigo2s and Indys, can't remember about Indigo R4ks, but NOT any big system.) Forget about 6.3&6.4, these are HW specific for O2 and Octane/Onyx2/Origins. 6.0 and 6.1 likewise, buggy and only for the R8000. Fast R4400 and R10000 systems probably benefit from IRIX 6.5.x, any version will run on them (I've heard that 6.5.14 and 6.5.22 are the best, I run .22, last version for pre O2/Octane equipment.) .22 seems faster than .17 to me. Disadvantage - somewhat pricey on the "grey market" (bought seperate from a system). You will want more than 128 MB of RAM, though. They will boot from any disk (default is system disk: ID1, CDROM id#3, but they aren't so fussy as Suns. As has been said, SGI decided to be "different" and make the host adapter 0 instead of 7). Mine is perfectly happy with a SCA adapted disk on the sled. Indigo2 might look bad next to an Octane, but in many things it will trash or keep up with O2, so don't knock it yet. Where are these $100 Octanes? I want one! Scott Quinn

21 years, 3 months

5
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small valves

by ajp166＠bellatlantic.net

> >Subject: Re: small valves > From: Tom Jennings <tomj at wps.com> > Date: Mon, 23 May 2005 00:20:47 -0700 (PDT) > To: > Cc: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >One word: hysteresis. It is the one thing that makes it possible. >I bought a few hundred thousand new/unused plain cores on ePay a >few years ago, for about twenty bucks. The problem is they're >about .005" OD! If you're going to make your own at home without >slave labor to go blind for you, you'll probably want cores large >enough to handle. You supplied me some once. I was able to assemble a 4word by 8 bit mat but I've not had time to actually drive it. Took two tries to make it. The wire used must have a insulation that is nick resistant. >If you just want to play and make a 4 x 4 core or something, I >wonder if you couldn't get decent hysteresis with some other >ferrite product. You could compensate for a "poor" core with good >electronics and/or brute force. I haven't looked at a toroid spec >sheet in ages and not for hysteresis. I use a lot of the F and FT series torids down the .125" and never saw any spec for hysteresis and I suspect sing most are not easily saturable that would be the difficulty with them. However tehy make near ideal transformeers at 100mhz! Allison

21 years, 3 months

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Commodore 64 906114-01 ROM CHIP

by mokuba＠gmail.com

My C64's 906114-01 chip just went up on me, in the middle of playing the lemonade stand simulation too :/ My 1541 and 1530 still operate perfectly though! Any chance I could get a rom chip off anyone? I'm told it's either the BASIC rom or Kernel ROM My classic computer collection just got knocked back to nothing :/

21 years, 3 months

5
8
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small valves

by ajp166＠bellatlantic.net

> >Subject: Re: small valves > From: "Dwight K. Elvey" <dwight.elvey at amd.com> > Date: Mon, 25 Apr 2005 09:57:08 -0700 (PDT) > To: cctalk at classiccmp.org >Hi Stan > I've done similar. I've taken one of those small 100W >inverters and rewound the transformer on it to provide >all the voltages for my older battery powered Atwater >set. It just runs from a 12 volt gel cell. I tapped >of the primary to provide the filament voltage and >used the secondary with tape to provide the rest. >As I recall, there was one -C and two +B voltages. >I used no regulation, just used the right rinding >ratios. One has to remember, these old radios >were made to run form carbon-zinc cell in most cases. >I did put a pot on my C cell. The original was -4.5v >but I found that it works better, with less distortion, >when set at about -3.5v. >Dwight Good approach. I enjoy building and winding my own cores be they EI iron or powered iron/ferrite types is part of that. Switching mode PS design is an art in itself. Part of the fun is building for good efficientcy and for powering tube designs that means knowing the load. An aside is don't run regens off inverter or switching supplies as the gain is high enough to negate reasonable shielding and bypassing. For that I find common alkaline 9V batteries in series do well for the typical 27-90v range and exhibit good life. Allison

21 years, 3 months

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help sought in Seattle WA/Vancouver BC area

by waltje＠pdp11.nl

Hi all, I ened some help in the area named above.. picking up some boxes and then shipping them out. If you're willing and able to help, pse drop me a note off-list ! Thanks, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://VAXlab.pdp11.nl/ Visit the Archives at http://www.pdp11.nl/ Email: waltje at pdp11.nl BUSSUM, THE NETHERLANDS / Mountain View, CA, USA

21 years, 3 months

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SGI Indigo2 IMPACT questions

by pete＠dunnington.u-net.com

On May 23 2005, 1:15, Jochen Kunz wrote: > On Sun, 22 May 2005 17:58:24 EDT > Saquinn624 at aol.com wrote: > > > Fast R4400 and R10000 systems probably benefit from IRIX 6.5.x, any > > version will run on them > IIRC 6.5.20 is the last version to officially support any "non-PCI" > machine. Actually 6.5.22 is the last release to support Indy, Indigo^2, etc. -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

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8 inch floppies available

by SUPRDAVE＠aol.com

I've just over 200 8inch floppy disks available for anyone interested. They're work disks from a paper company from 1985. All disks appear to be in good shape with no deterioration or mold that I can see from the random samples I looked at. Most are IBM brand. There's also some system master disks for an old XYCOM CP/M computer. Pay for shipping and you can add any extra if they're worth anything to you. Also got USCD p-system disks, Protem, some Micropro software with manuals and some original digital research master disks. I might keep these for bargaining purposes later.

21 years, 3 months

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Commodore 64, TS1000, and Apple ][e software transfer

by mokuba＠gmail.com

I'm about to acquire an Apple //e with two DISK ]['s, a TS1000, and I currently have a C64. I've got a tape drive for the c64 and i believe ordinary tape decks work for the other two, also i've got floppy on the c and the apple. Now comes the sticky part... Having/getting these systems, How am I going to transfer software to them?! Currently, I have a semi-broken (lever broke, have to use pliers to close it) 5.25 pc drive, and possibly some 5.25 floppies if i dig around These systems are fun to play with, but without any kind of software other then rom software, it's getting kind of boring... Really would love to have pointers to ways to transfer over software to them! Gary Sparkes KB3HAG - FM19tm

21 years, 3 months

2
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apple.Asimov images

by Saquinn624＠aol.com

I seem to be running into a similar thing to what everyone else ran into, namely that ftp.apple.asimov.net doesn't seem to be set up to enable easy downloads of large #s of files. If anyone is still interested, i have ~100 MB of apple.asimov, not sure how old it is (doesn't have any of the large uncategorized directories). Possibly someone with more bandwidth could contact them about becoming a "MailNet" mirror "server". Scott Quinn

21 years, 3 months

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small valves

by ajp166＠bellatlantic.net

> >Subject: Re: small valves > From: Gordon JC Pearce <gordon at gjcp.net> > Date: Sun, 22 May 2005 11:04:17 +0100 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Tony Duell wrote: >>>On Mon, 2005-04-25 at 13:39 -0400, Allison wrote: >>> >>>>Good approach. I enjoy building and winding my own cores >>>>be they EI iron or powered iron/ferrite types is part of >>>>that. >>> >>>Are these cores suitable for use in making data memories? Ie. could one >> >> >> I would hope not!. To make a core memory you need a magneitcally hard >> material that will stay magnetised. But for a transformer or inductor, >> you want a soft (magneticaly) material. >> >> -tony > >What about a small steel ring, or washer? > >Gordon. You would need a large amount of curent, in amps possibly 10s of amps for that. Volume of material counts. Oh, they would be very slow. Allison

21 years, 3 months

2
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Better indexing on bitsavers

by aek＠bitsavers.org

File name[24 characters] Index key [24 character part number] Printed page number [8 characters] Optional PDF page number if different [8 characters] I picked multiples of 8 for tabbing and it fits within 80 col. -- The only thing I'd suggest is if you want to include the file name, put it at the end, since filenames are pushing past 32 characters now as I put more descriptive file names up. <part number> <page number> <optional bookmark number> <optional filename> This obviously generalizes to: <keyword> <page number> <optional bookmark> <optional filename> 23 characters is probably adequate for <keyword> <filename> probably should be a URL, but that runs into problems with mirrors and all sorts of messy stuff when files move around in the heirarchy (sometimes groups of files get pushed down into new directories as more info on some topic shows up)

21 years, 3 months

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Application Notes

by aek＠bitsavers.org

I found a couple more on the old cartridge drives from CDC. I don't know if these are worth the effort to copy - the drives are long gone. Any opinions? -- If someone should turn up an old drive to recover data with, the more docs that can be found the better.

21 years, 3 months

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C64 rom issue addendum

by mokuba＠gmail.com

In reference to my previous email, a C128 wouldn't be turned down either :)

21 years, 3 months

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Dyson Interrogator

by bpettit＠ix.netcom.com

Cameron Kaiser asked: > > What does this run on, or is it a stand-alone unit? > > It was an early stand alone floppy diagnostic. Ran on PC compatible systems like the XT. We used it a lot to sort out and test Line Integraton failures. Billy

21 years, 3 months

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Application Notes

by bpettit＠ix.netcom.com

It was mentioned recently that App Notes are more useful than data sheets. I agree and have been digging to find some. Since there was a discussion on this earlier, I started with floppy data notes. First two are from CDC and are for using the WD 1793 and NEC 765 chips to interface floppies. Includes a lot of wave shapes and notes on the data separater and PLO. I loaned them to Al K. to scan and put up on his site. He is pretty loaded down right now so give him plenty of time to process. I found the AMD bit slice App Notes but found someobdy had already put them up on the internet. So into the eBay box they go. I found a couple more on the old cartridge drives from CDC. I don't know if these are worth the effort to copy - the drives are long gone. Any opinions? I also loaned him two of the Kludge Komputer Kompany articles from Datamation. They showed up on this list recently too. And I'm certain they will be enjoyed by those who haven't seen them before. Billy

21 years, 3 months

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Report from Dayton Hamvention

by ethan.dicks＠gmail.com

With so many things going on around the house, I was only able to really do Friday of the Hamvention this year. Even so, it was a good day, even if I wasn't able to find much of what I went shopping for. Among my better buys were: o A Verbatim 8" cleaning diskette with four 10-packs of moist diskettes plus a 8" library case for $3. o A Heathkit 5017-based clock with incandescent filament 7-segment displays for $5. o Enough laptop parts to build a spare for my daily-drive machine (OT) for $30. o Box of 10 Leviton designer X-10 wall switches for $40. o Cisco 1900 managed 10BaseT hub for $8. o Spare cell phone with batteries, charger, etc. for $5 (mine has a design defect that requires repair/replacement of the phone from wire damage at the hinge - on my 3rd body in 5 years). o ISA card with large prototyping space bolted on for $3. o P120 sub-notebook w/BSD to be used for GPS head w/Orinoco Gold WiFi card for $40. o Industrial GPS (bulkhead mount) with 2m lead to amplified antenna for $25. o Tube of PIC 16C54s for $2. I saw much less Sun gear than two years ago, only a couple of Sparc5s, and a few disks and Sbus cards virtually no DEC gear, not even Alpha (the bed of Dan Cohoe's truck notwithstanding). A few collectible micros (Timex 1000, C-64 with all the goodies, Atari 800...), with one guy having the pick of the litter - a Rockwell AIM-65 w/dual 8" floppies (asking $500) and an Altair 8800b (turnkey frontpanel) with 2 matching 8" floppy cabinets and docs (asking $1000). I was really disappointed at the sparseness of component vendors. There were a few there, but nothing like days past. I was unable to locate a variety of chips and switches that were explicitly on my shopping list of parts for my Elf 2000, Real Console, SBC65C02, etc. The weather was threatening rain at various points, but it did little more than mist briefly, not even enough to have people close down. The drive was incredibly foggy at 06:30, but cleared up by mid-morning. Today looks gorgeous, with partly cloudy skies and temps in the mid-70s. Tomorrow should be nice in the morning, turning to rain as people go to leave. The other thing that struck me was the number of empty flea market spaces... in some cases, near the back, it was well over 60% in a given area. Even on the dense side of the main aisle it wasn't entirely full. I don't know if the looming clouds played a part, but perhaps some Saturday-only folks may show up today to sell. I'd heard that flea market space prices had jumped, so perhaps the market is responding to the increase, or perhaps not as many people are willing to gas up the truck to make the long trek. Either way, attendance seemed to be good; the local news reported 30,000 attendees (no doubt based on reported ticket sales), and was touting the $10M being spread around by the Hams, much at local lodging and eating establishments. Since I am less than 90 minutes away, it's still worth it for me. I did get to meet a variety of people face to face from the list here. Dan Cohoe's spot made a good place to cycle through to see who had paused at the pile of CDC disk packs that Dan was using as bait to snag mini-computer mavens who might have stuff squirreled away in corners. Our planned meetup at the Rib Spot was a success, with several classiccmp regulars and a few lurkers in attendance. Should have thought to have gotten a group photo, but I was too tired to think of it, and I'd left my camera at home in any case. Something to remember for next time. So in short, I found a few bargains here and there, with some people willing to accept a bit below their asking prices, and some resolute and firm, but that's to be expected on the opening day... Sunday is always bargain day, especially on wet years, which this looks not to be. -ethan P.S. - one fun moment was peering into a digital data recorder/logger that Dan Cohoe had brought to sell and identifying the IM6100 processor and the 12-bit-wide bank of SRAM inside, c. 1979. I had expected an ordinary 8-bit micro like a 6800 or Z-80, and was surprised to find something off the wall.

21 years, 3 months

2
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Dyson Interrogator

by bpettit＠ix.netcom.com

While sorting stuff today, I came across the Dyson software for testing floppies. We used to use this for testing many of the early full size and half height 5 1/4 floppies. Dated 1985, 5 disks and manual in a plastic wallet binder. I was going to put it up on eBay but realised that maybe someone on the list would get more benefit from it. Would rather see it go to a good home than make a dollar or two from it. Let me know. Billy

21 years, 3 months

1
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Looking For Advice On Apple II Stuff

by bpettit＠ix.netcom.com

I've been getting more stuff ready for eBay. Today, I opened a box of Apple II books and software. The box seems to be one I packed in 1986 when I moved to California. I have no idea if this stuff is worth the effort to list it and then have to handle it. Could someone on the list give me some advice? If I send you a list of what is there, could you tell me whether it's worth the trouble? Please reply off list to: bpettit at ix.netcom.com Thanks for your help, Billy

21 years, 3 months

1
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Help with MicroVax???

by starmaster＠gmail.com

I am about to obtain a MicroVax model 655QS-B2... I was hoping someone could tell me about this machine, and a good source for documentation and/or information...I know it does not have a power cord with it, but don't even know what kind of power cord it takes... If anyone is willing to help me with a few more questions, I would appreciate it, as I am very new to the Classic Computing area (except for some old C-64 and 128 stuff) Thanks

21 years, 3 months

2
1
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small valves

by ajp166＠bellatlantic.net

> >Subject: Re: small valves > From: Tore S Bekkedal <toresbe at ifi.uio.no> > Date: Sat, 21 May 2005 18:44:05 +0200 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On Mon, 2005-04-25 at 13:39 -0400, Allison wrote: >> Good approach. I enjoy building and winding my own cores >> be they EI iron or powered iron/ferrite types is part of >> that. >Are these cores suitable for use in making data memories? Ie. could one No, their characteristics are all wrong. The Cores I refer to are large by a fact or 15 to as much as 100 time that of cores used for memories. >hypothetically make a core store today, using those cores? Has anyone >done this? Do the current-day cores have better properties for use as >memory than the ones used in past-day cores? The past day cores were very optimized material and have not seen any improvement. As to making a corestore today it's still possible but the small cores needed to attain a 1-2uS cycles time are not common. Allison

21 years, 3 months

1
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OT: Morse Code vs. text messaging, who's faster?

by news＠computercollector.com

>From the email list of the NJ Antique Radio Club: ------------------ Tonight, Friday May 13th, the Tonight Show will feature a message sending/receiving contest between a cell phone text messaging team and a Morse code team. The Morse code team will consist of Chip Margelli, K7JA and Ken Miller, K6CTW. The Tonight Show people called the store yesterday to see if we could come up with two fast Morse operators. Chip and Ken does a lot of contests and DXpeditions. Joe Drago, props manager for the show is KF6OCP. ------------------- Evan speaking again: am I just out of the loop on radio collector terms -- do they have something called the "Tonight Show" -- or do ya'll expect they mean the ACTUAL show with Jay Leno? ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see http://groups.yahoo.com/group/midatlanticretro/ *** Tell your friends about the (free!) Computer Collector Newsletter - 700 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 3 months

5
5
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Loading dock south of Boston?

by brian＠quarterbyte.com

Hi Folks, Does anyone know of a loading dock that Norm Aleks and I could use for a few hours next Thursday? We're doing a computer rescue and will be able to save significant shipping bucks if we can UHaul the stuff to a loading dock and wait with it for pickup by a common carrier. We're looking for something southwest of Boston, Norwood area. Could you email directly if you have any idea? We'd much appreciate it. Thanks Brian =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _| _| _| Brian Knittel _| _| _| Quarterbyte Systems, Inc. _| _| _| Tel: 1-510-559-7930 _| _| _| Fax: 1-510-525-6889 _| _| _| Email: brian at quarterbyte.com _| _| _| http://www.quarterbyte.com

21 years, 3 months

1
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What does PUSHJ do?

by ajp166＠bellatlantic.net

>Subject: Re: What does PUSHJ do? > From: Johnny Billquist <bqt at Update.UU.SE> > Date: Sat, 21 May 2005 12:47:45 +0200 (CEST) > To: cctalk at classiccmp.org > >Ah! That explains it. :-) I do have a PCdos compatable asm that is pretty neat but for little stuff the eyeball does it fast enough. ;) One day when time permits a RS08 equivelent will be made for the 8f and I'll start running real software. >> I've used one that did. Might have been a hack. The 6120 however does >> and the DEC purchase spec is clear on that too. It's still done with IOTs. > >Must have been some additional hardware. One brain cell seems to think >that DEC maybe sold some hardware to implement stacks on the pdp8, but it >might have been the pdp-12 as well. >But yes, the 6120 did have IOTs for that. > >I have several PDP-8/A systems around, but no 6120 systems... I have no PDP-8a. I do have three 6120 based systems, two DECmateIII and a homebrew using the chip. The 6120 is the second generation of the 6100 PDP-8 in CMOS. It adds EMA and stacks via IOTs in hardware. Runs OS/278 flavor of OS/8 well enough. Allison

21 years, 3 months

1
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Help with MicroVax???

by James＠jdfogg.com

> Looks like a MicroVax, having a KA655 CPU, 16MB RAM, running > on 240V, about 1998 vintage. Sorry, dislexia or typing syndrome struck. It about 1989 vintage.

21 years, 3 months

1
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Help with MicroVax???

by James＠jdfogg.com

> I am about to obtain a MicroVax model 655QS-B2... > I was hoping someone could tell me about this machine, and a > good source for documentation and/or information...I know it > does not have a power cord with it, but don't even know what > kind of power cord it takes... > If anyone is willing to help me with a few more questions, I > would appreciate it, as I am very new to the Classic > Computing area (except for some old C-64 and 128 stuff) Thanks > > >From a google... MV3900 SBB:KA655-AA 16MB 240V Looks like a MicroVax, having a KA655 CPU, 16MB RAM, running on 240V, about 1998 vintage. And a picture... http://hampage.hu/vax/e_1989.html Looks like a nice, reasonably modern fast Vax in a digestable size. But you'll have to do something about the 240V.

21 years, 3 months

1
0
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text-messaging versus morse code - Jay Leno show

by GOOI＠oce.nl

Hi all, if you want to see the show fragment, here is a URL (8,4 Mb) http://n6tv.kkn.net/Text_vs_Morse_Leno_2005_05_13.wmv 73, - Henk, PA8PDP.

21 years, 3 months

5
4
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PDP-11 lamp test

by drb＠msu.edu

Jay: Try this: Location Contents Opcode Comment 001000 012700 mov #1,r0 Load 1 into R0 001002 000001 001004 006100 rol r0 Rotate R0 left 001006 000005 reset Initialise bus (70ms) 001010 000775 br .-4 Loop back to 'rol r0' from: http://www.psych.usyd.edu.au/pdp-11/11_40.html#chaser Not sure if it works on all models. De

21 years, 3 months

4
3
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OT: He who dies with the most toys...

by vcf＠siconic.com

Um, Paul Allen wins: http://www.monogon.org/other/Octopus.ppt -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 3 months

3
3
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What does PUSHJ do?

by bqt＠Update.UU.SE

On Thu, 12 May 2005 Allison <ajp166 at bellatlantic.net> wrote: > >Subject: Re: What does PUSHJ do? > > From: Johnny Billquist <bqt at Update.UU.SE> > > Date: Thu, 12 May 2005 10:30:31 +0200 (CEST) > > To: cctalk at classiccmp.org > > > >Not a good example. It should really be JMS FOO, and at the label FOO you > >need to place a 0, which is overwritten by the return address. (What > >assembler do you usually use, btw? Comments come after a slash... :-) ) > > Mindeye. Neumonics to octal on paper usually. My 8 doesn't have any > mass store not even TTY. I plan to take some EEprom and make a RS08 > or other disk equivelent. Ah! That explains it. :-) > >Eh? No. The PDP-8/a don't have any stack IOT. Same set as the 8/e. The > >only difference is how some illegal combinations of OPR instructions act. > > I've used one that did. Might have been a hack. The 6120 however does > and the DEC purchase spec is clear on that too. It's still done with IOTs. Must have been some additional hardware. One brain cell seems to think that DEC maybe sold some hardware to implement stacks on the pdp8, but it might have been the pdp-12 as well. But yes, the 6120 did have IOTs for that. I have several PDP-8/A systems around, but no 6120 systems... Johnny Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at update.uu.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

21 years, 3 months

1
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zip (was: Re: Disk archival techniques)

by aek＠bitsavers.org

Yes, Andy Goldstein (or whoever, but I think Andy wrote the first version) really did a nice job in VMS BACKUP. I once wrote a program to read such tapes on a Unix system and needed to learn the techniques used. Very nice. Indeed an entire /BLOCK_SIZE block of data within one /GROUP_SIZE could be completely corrupted on tape, yet BACKUP could correctly restore it. John -- Do you still have this (I assume it's different from the various C versions of "VMSBACKUP" floating around) That program does not do a very good job of recovering from archive errors. There appears to be very little written down about the variations in the VMS Backup format as well.

21 years, 3 months

4
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2 UPS/Alarm batteries available

by pete＠dunnington.u-net.com

On May 20 2005, 18:58, Geoffrey Thomas wrote: > http://www.homepower.com/files/desulfator.pdf I've built a couple of these, and they do work -- but bear in mind that while they work for sulphated batteries, they won't work for batteries with warped or disintegrating plates, which are other common problems with batteries that have been abused. > Above shows battery revitaliser cct. > Elektor had a more complex cct. in the September 2001 issue. > Don't know how successful it would be with sealed gel batteries. > CPC / Farnell have similar prices to ARD with CPC offering free carriage > with orders over ?30 (ex. vat ) > I think Farnell have free carriage over ?10. > Again no connection with either company, just use them a lot. > > > I have *two* 1kW Smart-UPS units with dead batteries. (And two more > which > > > I am using but the batteries are 'weak'.) > > > > > > Is there any way of rejuvenating sealed lead-acid batteries or is it a > case > > > of once they fail to hold a charge, they are useless? (And if so, does > > > anybody know a very cheap UK supplier of them?) -- Pete Peter Turnbull Network Manager University of York

21 years, 3 months

1
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Anyone in Edinburgh...

by julesrichardsonuk＠yahoo.co.uk

... able to pick up a Sun CPU board for us and get it any further south at any point? I've found someone in Edinburgh who has a replacement Sun 4/330 CPU board for us, but I don't exactly trust it going through the postal system :-( Getting it as far as Newcastle (*waves to Witchy*) or Leeds area by car, or further south to Bletchley itself / Cambridge / Luton / London would be rather useful! Actually, it sounds like there's an entire 4/330 system; we only need the CPU board - but if this donor one has a framebuffer then I could cobble together a seperate working 4/330 out of the bits and our broken 4/330 CPU board... albeit it one with knackered serial ports :) No real loss if we just get the CPU board and not the rest though... cheers Jules

21 years, 3 months

2
1
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AS400 with OS on Ebay

by fernande＠internet1.net

I'm not in the market for this, but I thought I'd mention it to the list. It's an AS400 with OS, which would make it pretty rare, I would think. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=74946&item=519916868… Chad Fernandez Michigan, USA

21 years, 3 months

1
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VAX LO200 memory board

by stephane.tsacas＠gmail.com

Hi, I'm looking for some info regarding this card : capacity, bus, etc. As far as I remember it's a 4 SBI VAX 780 memory board ? Thanks ps; I'm looking for a "cheap" way to bring books and electronic parts from Houston to Paris, France. Any hint welcome. -- Stephane Paris, France.

21 years, 3 months

2
1
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Eeeeeeewww.......

by James＠jdfogg.com

> Subject: Eeeeeeewww....... > > For the Apple 2 fans...or the MVS fan...or those that hate > either one... > > http://www.livejournal.com/users/jmaynard/203754.html > > William Donzelli > aw288 at osfn.org Well, I find something beautiful about this.

21 years, 3 months

1
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Paging: David Greelish

by news＠computercollector.com

Are you out there? ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see http://groups.yahoo.com/group/midatlanticretro/ *** Tell your friends about the (free!) Computer Collector Newsletter - 725 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

21 years, 3 months

1
0
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ACT Apricot keyboards, or infra-red japes

by witchy＠binarydinosaurs.co.uk

Hi folks, Recently I've picked up the bits of the infra-red Apricot keyboard that Jules investigated at my place and left in bits all over one of my sofas :) It's a membrane activated by springs and quite a lot of the keys don't register with the host machine which in wired keyboards points to a dodgy membrane.....however, in this case there might also be some issue with the infra-red emitters, so short of dragging a digital video camera down to my southern home is there a way of watching the infra-red emitters to see if they're working OK? I know CCD based video cameras can see infra-red...... Apologies in advance if this message appears garbled, I'm using an awfully off-topic Mac G4 with OSX 10.2 and I'm not used to its settings yet :) The machine was going to be dumped yesterday because 'it doesn't work'..........oh yes it does :D Cheers, a

21 years, 3 months

5
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ACT Apricot keyboards, or infra-red japes

by leeedavison＠yahoo.co.uk

> Surely there's one encoder and IR transmitter for the > entire keyboard (there may be several IR LEDs, but > normally they're wired in series and send the same > information). In which case if _any_ keys work, then > it's very unlikely the problem is with the IR transmitter. Not true. IR formats where the energy density per bit type differs can fail on specific codes due to the IR LED supply capacitor failing. E.g. in the Sony SIRC protocol a 1 bit is transmitted as 1.2ms of carrier and .6ms gap whereas a 0 bit is .6ms of carrier and .6ms gap. In this case any command that has a sequence of two or more 1s may fail where a code with only single 1s way work. Not very likely I'll admit but it can happen. The easy way to diagnose this is if it works with brand new cells but cells a couple of weeks old don't work well. Lee. . ___________________________________________________________ How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com

21 years, 3 months

3
2
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Interesting Epson memory card

by vcf＠siconic.com

Has anyone ever seen one of these? http://www.siconic.com/computers/epson/ It's a credit card sized memory device made by Epson. Allegedly stored anywhere from 16 - 128K per card. Used some sort of backup battery for the memory. I don't believe this was flash. Apparently Epson OEM'd them to various companies for use in various devices, presumably including laptops. Can anyone identify exactly what this card is and what might be able to read from it? Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 3 months

3
2
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Inventory for handling scanned documents (was: Better indexing on bitsavers)

by aek＠bitsavers.org

> what do you do with "fold out" pages within documents The IS520 will scan fold out pages directly in most cases. For the REALLY long pages, I scan them in overlapping sections and append a letter to the page number. The first piece is the left side of the page, so as you page through the document the overlapping sections scan across the long sheet left to right. Variable width documents add another level to the scan directory A convention I came up with a long time ago was to add '_number' to the file name. Changing scanning size is fairly easy between sections (changing the scan width, normally) in the program. So, if you scan a doc that has an 11x17 page, you'll end up with the following directories foo_f foo_b foo_f_1l (the 'l' is a marker that let's me know it's a long page) foo_b_1l foo_f_2 foo_b_2 ..and on an on for all the alternating page sizes Then I have to flip the filters around for all the differing page sizes and orientations Eventually, this produces sequentially numbered tiffs of differing sizes which are then 'tumbled' ..also forgot that I rotate 8x11 pages to 11x8 if the page has horizontal data on it. DEC tech manuals are the worst.. they will often have a single 11x17 page so I'll end up with dozens of directories that need to be manipulated.

21 years, 3 months

1
0
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Kaypro II system disk?

by ajp166＠bellatlantic.net

> >Subject: Re: Kaypro II system disk? >From: "Doc Shipley" <doc at mdrconsult.com> >Sent: Tuesday, May 17, 2005 4:20 AM > > >> Apropos to the discussion of Don Maslin's archives, I need a bootable >> disk image for a Kaypro II with the Advent TurboROM (Plu*Perfect Systems) >> The Advent hard disk formatter would be a plus, but right now I'd be happy >> just to boot CP/M on the thing. >> >> FWIW, it's got one original SSDD floppy drive, a Rodime 252F hard disk >> and an Advent .5MB RAM drive. It's the v3.0 TurboROM. >> >> Doc Doc did you ever get a disk? What drive(s) does that system have installed? I have A kaypro 4/84 I use with with Advent Turborom and Ramdisk however I have mine set up with some 3.5" drives. Mine doesn't have a host controller so no hard disk. I'd need to pull out one drive to set up the right drive to make a boot disk. I modded it years ago to improve functionality rather than preserve it as manufactured mostly as it was already not original. REGARDING ARCHIVEGING: I was/am trying to get away from the multitude of incompatable 5.25" formats. By installing the 3.5" drives with Turborom that allowed me to have only one media (3.5") and at most three formats on that media (781k CP/M, 720k CP/M, 720K dos-PC) which is my sanity set that all my machines can do directly at the media level and programtically using applications. Allison

21 years, 3 months

8
8
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2 UPS/Alarm batteries available

by Saquinn624＠aol.com

If anyone in the Seattle area needs 2 12V 7Ah alarm/UPS type lead acid batteries (used, charged, still hold it) they are available.

21 years, 3 months

7
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Tektronix, TI and Sony gear available in Kansas City

by mamcfadden＠cmh.edu

Originally sent from my home account I have the following classic computer gear available. Tektronix 4205 missing keyboard Tektronix 4052 missing the cover, somebody disposed of the cover before I got it. Tektronix 4209 + keyboard, big honker Tektronix 604 monitor Tektronix 632 monitor Tektronix 650-1 Matrix Monitor Sony Series 35 Model 10 with 2 internal floppy drives I seem to remember that this can run CP/M. Texas Instruments System 1100 gray tower CPU with external disk drives I'm cleaning the garage and this was on top of the piles, more later. Make me an offer Mike m a m c f a d d e n at c m h dot e d u

21 years, 3 months

1
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older semiconductor manuals available in Kansas City

by mamcfadden＠cmh.edu

Originally sent from my home account and I think they didn't get through > Fairchild Semiconductor > > 1. Opto electronics handbook Feb 1973 > 2. TTL data book June 1972 > 3. Discrete Products databook July 1973 > 4. The Linear Integrated Circuits Data Catalog Feb 1973 > 5. MOS/CCD data book 1975 > 6. Condensed Catalog LSI microcomputers memories CCD May 1978 > 7. Optimos Sep 1972 > 8. TTL Applications Handbook August 1973 > 9. Optoelectronics data book 1978 > 10. FAST (Fairchild Advanced Schottky TTL) 1980 > 11. TTL Databook 1978 > 12. Hybrid Databook 1978 > > Signetics > 1. Full Product Line Reference Oct 1979 > 2. Military Product Reference Guide May 1979 > 3. Logic - TTL Specifications, military Summary 1978 > 4. Analog Specifications, military summary 1979 > 5. Bipolar & MOS memory Jan1979 > 6. Analog specifications, applications, military summary Aug 1977 > > Siemens > 1. Zener Diode Reference Guide > > EEM 86 87 > Volume W Mike m a m c f a d d e n at c m h dot e d u

21 years, 3 months

1
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dec equipment available in Kansas City

by mamcfadden＠cmh.edu

Originally sent from my home account and I think they didn't get through running when shutdown 5 years ago alpha server 2100 monitor VRT19-HA tape drive TS05 monitor VR297-DA also several dec terminals make me an offer Mike m a m c f a d d e n a t c m h d o t e d u

21 years, 3 months

1
0
0 0

Better indexing on bitsavers

by dwight.elvey＠amd.com

>From: "der Mouse" <mouse at rodents.montreal.qc.ca> ---snip--- > >Those (OCRed plain text and PDF files) are not the only options. > Hi Of course, I have a better option. I have some of the actual ASCII source text for a few of the manuals used in the Polymorphics systems. I lack pictures and diagrams but at least there are not OCR errors. I guess this isn't always available for everything :( Dwight

21 years, 3 months

7
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Interesting Epson memory card

by ajp166＠bellatlantic.net

> >Subject: Re: Interesting Epson memory card > From: Cameron Kaiser <spectre at floodgap.com> > Date: Thu, 19 May 2005 20:06:25 -0700 (PDT) > To: cctalk at classiccmp.org > >> Ok along the same line I have a KINGSTON KTT-4500/4 4MB card that >> may fit older laptops. > >Might be for Toshiba Satellite systems. I have a 16MB "credit card" RAM >module in my Satellite T1950. > Ah, I have no toshiba laptops. Sounds like it's a unusalumpa. ;) Allison

21 years, 3 months

1
0
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Fw: essay on bus structure

by jwest＠classiccmp.org

I was contacted by a student who is writing an essay on computer bus structure, comparing intel PCI bus to PDP-11 unibus. I'm certainly not qualified to give detailed information on this... so I'm passing it on here. If anyone cares to take a stab at this, you can contact her at: cqfranks at yahoo.com Caroline Jay West

21 years, 3 months

1
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Free 8088 Zenith laptop

by fireflyst＠earthlink.net

Drat, didn't mean to reply to the list. Sorry! > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Julian Wolfe > Sent: Friday, May 20, 2005 12:57 AM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Free 8088 Zenith laptop > > If the laptop isn't claimed yet, how much is it for shipping to 60031? > On May 18, 2005, at 8:44 PM, Erik Klein wrote: > > > > > Absolutely free (you pay the shipping): > > > > I have a Zenith Data Systems ZWL-184-97. It looks a lot like a > > SuperSport but it isn't. . . see > > http://www.obsoletecomputermuseum.org/zenith_l/ > > for > > a look at one in much better shape then this. > > > > Mine is yellowed and has a crack on the front left but it > does work! > > It > > has an internal 3.5" floppy as well as a 20 MB HD. Given > enough time > > (it's SLOW) it will boot to the HD which has WordPerfect > and DOS 5.0 > > installed. > > > > The machine comes with a battery pack (dead) and a power > brick as well > > as a spare 3.5" drive. > > > > All yours for absolutely nothing if you come pick it up in > San Jose or > > for the cost of shipping if you want it anywhere else. > > > > It's gone by the end of the weekend, one way or the other. . . > > > > -- > > Erik Klein > > www.vintage-computer.com > > www.vintage-computer.com/vcforum > > The Vintage Computer Forum > > >

21 years, 3 months

1
0
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Classic DEC picture from "American Used Computer"

by wmaddox＠pacbell.net

--- shoppa_classiccmp at trailing-edge.com wrote: > > In the 60's and 70's, there was an outfit called > "American Used Computer" I have a copy of their Winter 1978 catalog that I bought from William Donzelli a few months ago. I've been meaning to scan it... --Bill

21 years, 3 months

5
4
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Better indexing on bitsavers

by aek＠bitsavers.org

>> Doesn't this sort of imply that PDF is the wrong choice of format for >> jobs like these? PDF is terrible way to package the documents. >It's just better than any other practical method ;-) >So many talk about ASCII being the only "right way", as Al can attest to >time and accuracy makes image oriented PDF's the way to go. I'm pragmatic. I have hundreds of thousands (probably millions now..) of pages of paper. I wanted easy access to all of it. Eric also had a lot of stuff that I didn't have. The machines I use are Macs and Linux boxes. There are PDF viewers for both of those platforms that had page indexing. The level of PDF used is the minimum to support wrapping collections of scans together with very simple metadata (the page number). That's all of PDF that I use. The overhead is minimal, it can be read across most computers currently in use, and if it's working with the right sort of browsers will only transfer the page being viewed instead of the whole document. If something different comes around, the PDF spec is public, and by using such a small subset it should be simple to translate. I've never found much use for the fancier scripting stuff in tumble. It takes long enough to just do the minimal post-processing of the scans that I do now to think about writing a script for each document to do any sort of fancier indexing.

21 years, 3 months

4
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Free 8088 Zenith laptop

by classiccmp＠vintage-computer.com

Absolutely free (you pay the shipping): I have a Zenith Data Systems ZWL-184-97. It looks a lot like a SuperSport but it isn't. . . see http://www.obsoletecomputermuseum.org/zenith_l/ for a look at one in much better shape then this. Mine is yellowed and has a crack on the front left but it does work! It has an internal 3.5" floppy as well as a 20 MB HD. Given enough time (it's SLOW) it will boot to the HD which has WordPerfect and DOS 5.0 installed. The machine comes with a battery pack (dead) and a power brick as well as a spare 3.5" drive. All yours for absolutely nothing if you come pick it up in San Jose or for the cost of shipping if you want it anywhere else. It's gone by the end of the weekend, one way or the other. . . -- Erik Klein www.vintage-computer.com www.vintage-computer.com/vcforum The Vintage Computer Forum

21 years, 3 months

2
1
0 0

Wanted: Rubber drive wheel for HP 9144 tape drive

by infomagic＠mail.localisp.com

Look up a company called "Star-Glo", at 2 Carlton Ave., E. Rutherford, NJ. I pass their building often, but I don't have a phone # or email. I'd think a web search would locate them. They fabricate dozens of compounds, and rubber seals and gaskets for everything from glass jars to submarine hatches. They also fabricate such parts as the rods in printers that have the molded-on rubber (or whatever) rollers. Good luck! -John ________________________________________________________________ Sent via the WebMail system at mail.localisp.com

21 years, 3 months

1
0
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Disk archival techniques

by dwight.elvey＠amd.com

>From: "Randy McLaughlin" <cctalk at randy482.com> > > >In the 1940's how many people were able to build a radio reciever with what >they found in the battle field (razor blade, safety pin, knife, wire, >headset), how many could today? The same applies to computer technology. > Hi I could. Junk today has more useable parts than the junk they had then. Making a AM radio is quite easy today. Dwight

21 years, 3 months

10
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Interesting Epson memory card

by ajp166＠bellatlantic.net

> >Subject: Re: Interesting Epson memory card > From: William Donzelli <aw288 at osfn.org> > Date: Thu, 19 May 2005 20:45:59 -0400 (EDT) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >> Has anyone ever seen one of these? >> >> http://www.siconic.com/computers/epson/ >> >> It's a credit card sized memory device made by Epson. >> >> Allegedly stored anywhere from 16 - 128K per card. Used some sort of >> backup battery for the memory. I don't believe this was flash. >> Apparently Epson OEM'd them to various companies for use in various >> devices, presumably including laptops. > >Roland synths use these (some of them anyway). > >Did I not sent a reader to you at one point? > >William Donzelli >aw288 at osfn.org Ok along the same line I have a KINGSTON KTT-4500/4 4MB card that may fit older laptops. I wonder if there is data to use it for a CP/M system (pinouts and the like). Allison

21 years, 3 months

2
1
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Classic DEC picture from "American Used Computer

by aek＠bitsavers.org

"photo is scanned in from the October 1982 issue of National Geographic magazine" Unfortunately, the classiccmp links no longer match what Google thinks they should be. (Jay???) Here is what is in Google's cache: From: David Forbes <> To: Tom Jennings <tomj at wps.com> Subject: Re: Would you buy a used PDP-8 from this man? Date: 14 Jan 2004 13:37:17 -0700 Tom, This photo is scanned in from the October 1982 issue of National Geographic magazine, which I just found at the thrift store. It has an article about The Chip, and another about Silicon Valley. Humorous reading. The guy with the bowtie is Sonny Monosson of American Used Computer in Boston MA. I remember you saying that you used to go there now and then in your youth. I remember getting their ads in the late seventies, when I was using PDP-11s in high school and college. I would drool over the possibility of getting an obsolete 11 for home use, but the shipping was so expensive back then. I imagine the power bill would be something to behold also. All I remember about the Heathkit LSI-11 I used at Optical Sciences is that it was slower, instruction for instruction, than the Z-80 I also used.

21 years, 3 months

1
0
0 0

Better indexing on bitsavers

by dwight.elvey＠amd.com

Hi I've just got to say that I'm not sure why I didn't look in bitsavers for the data sheets. I think it was that at first, I wasn't sure if it was a Western Digital part or someone elses. I can only claim stupidity. Google ready indexing would have made the difference though. Dwight

21 years, 3 months

1
0
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From 1985 - HP 150 TouchScreen goes for >$400 !

by rigdonj＠cfl.rr.com

I'm sitting on a gold-mine! I never thought I'd see this. I actually gave away over a dozen of these a couple of years ago just to thin out the herd! <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5195903359&rd=1&sspagena me=STRK%3AMEWA%3AIT&rd=1> Joe

21 years, 3 months

6
7
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zip (was: Re: Disk archival techniques)

by aek＠bitsavers.org

A simple citation of Blair/Maron will show much of what is wrong, even though it is pre-WWW. Blair/Maron:1985 D. C Blair and M. E. Maron: "An evaluation of retrieval effectiveness for a full-text document retrieval system", Communications of the ACM, 28, pp. 280--299, 1985 I assume. -- http://pi0959.kub.nl/Paai/Onderw/V-I/Content/history.html is an interesting little overview (found with a Google search, of course :-)

21 years, 3 months

1
0
0 0

Wanted: Rubber drive wheel for HP 9144 tape drive

by bill＠timeguy.com

I'm trying to help a friend locate a replacement tape drive wheel for an HP 9144 tape drive. He says that there's a hard roller inside the tape cartridge, and there's a softer (rubber?) roller in the drive that pushes against it, pulling the tape along. Apparently the softer rollers tend to turn to "goo" after many years. He's been working to recover some archived files from the beginnings of the company he works for, mostly for historical interest, and his last tape drive recently succumbed to the "goo" problem. Anyone have any replacement rollers that would be in any better shape, or any suggestions for alternatives? Thanks!

21 years, 3 months

5
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