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

by julianskidmore＠yahoo.com

Hi Jos, > > ..the Mac's good, but the flyback Transformer burnt out a while > > back and I was wondering what would be a suitable replacement. > I just discarded a Mac plus analog board, interested ? > You can have it, or just the flyback, for the cost of shipping from > Switzerland. That's very kind of you, if you email me on my own address: mailto:julianskidmore at yahoo.com we'll sort out payment. I don't mind if you ship the whole analog board as I imagine it'll take quite a bit of effort to pull the Flyback off it. Not sure how compatible SE and Plus flybacks are (I don't think the Plusses had 'bleeders'), but it's my best (and only) offer! -cheers from julz @P

17 years, 11 months

1
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Any TI99 Folks out there?

by snhirsch＠gmail.com

I have just added a TI expansion unit to my collection. It came with all the proper internal modules, but there's a possibility that the Disk Management plug-in cartridge (firmware) is missing. If the person I bought it from is unable to find it, is there any workaround to not having this? Does anyone have a spare one to sell? I'm reasonably new to the TI system, so any advice or input would be greatly appreciated! Also needed: The "A" and "B" diskettes that accompanied the Editor/Assembler package. I do have the firmware cartridge and docs for this. Steve --

17 years, 11 months

2
1
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Datasheet for Intel 1103 DRAM?

by derschjo＠mail.msu.edu

Anyone have a copy of this in digital format? Can't find this on the 'net. Trying to work out what voltages the power supply in the ND-821 is supposed to put out. From testing, it looks like 5v, 18v, and 24v. Knowing what the RAM requires will help nail this down, since it's powered separately from the main logic. Thanks, Josh

17 years, 11 months

7
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Nuclear Data ND-812 info...

by aek＠bitsavers.org

> Anyone know anything else about these things? Nuclear Data was a Chicago company that built various bits of instrumentation for the nuclear industry. I have heard they were the company whose computers were at Three Mile Island, but have no documentation on that. The ND-812 front panel is light/dark green as well. I have one in poor condition. The CPU is wire wrapped. There are PCBs for the core memory system. Bunker-Ramo used them in a point of sale system for supermarkets, mostly in the Chicago area. Parts for them would show up at hamfests in the mid-late 70's there, which was the first time I saw one.

17 years, 11 months

2
1
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Old parts

by nico＠farumdata.dk

Hi all During a minor clean-up, I found some parts looking for a good home. Available for the cost of the postage from Denmark. The parts come from an mid-80 Acer IBM XT compatible - PC/500 cpu card (8088-2) - PC/500 I/O card with printer, comport, floppy controller - EGA card - LAN card for coax + 15-pin subd I think I also have a harddisc controller somewhere. - 1 backplane All cards are 8 bit ISA. Nico

17 years, 11 months

1
0
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EISA cfg file needed

by teoz＠neo.rr.com

Looking for an EISA config file !INT3132.CFG if anyone has it. Thanks, TZ

17 years, 11 months

2
4
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Off-Topic Fluke 4250 info wanted

by g.rosi＠tiscalinet.it

Dear Jonn, i'm an Italian engeneer and I buy some mounth ago a lot of fluke 4250 voltage source. Unfortunately i'm not able to program because i not have the message list....i tried be with no result. Have you any information abaut? If yes, can you post me the list? Thanks in advance. Guido Rosi

17 years, 11 months

1
0
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Paper tapes+rubber bands+30 yrs = mess

by chrise＠pobox.com

I have a large collection of paper tapes that came with a vintage Altair 680b and Teletype model 33 that I inherited. I've restored the machines and have started looking at the tapes. Unfortunately, I have discovered that the rubber bands that were used to keep the tapes rolled up have all dissolved into a yucky gooey mess that is in most cases, stuck to the tapes. I'm pretty sure the oil on the tapes and 30+ yrs time have done this dirty deed. Sadly, there were original, unopened MITS Altair editor/assembler tapes, BASIC, etc. still sealed in their original packaging but the rubber bands inside have melted all over the tapes. Has anyone dealt with this kind of cleanup before? What are my best options for solvents to get rid of what's left of the rubber without damaging the tapes too much more? What a mess. Parents, talk to your children about rubber bands... Chris -- Chris Elmquist mailto:chrise at pobox.com

17 years, 11 months

9
11
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ECC on MFM drive

by ra9yer＠yahoo.com

Hello, Could someone help me understand the algorithm used for data integrity check on ST251 MFM drive. I have ST251 drive and an Adaptec controller. Also I have ability to view recorded data in raw format. On the track I see ID field block protected by CCITT CRC16. And the data block protected by some 32-bit ECC. This is definitely not a CRC32. The algorithm in general looks like shift register for polynomial multiplication with polynomial equal to x32+x28+x26+x19+x17+x10+x6+x2+1 . But, this is not just a multiplication. The circuit has some other logic that I did not understand yet. I?ve found very useful document (http://www.national.com/an/AN/ AN-413.pdf) It has a mention about algorithm called ?Glover 140A0443 ? May be this is that I have? Please advice. Thank you. Alexander.

17 years, 11 months

3
2
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vac tubes / was Re: Schematics of Atanasoff-Berry

by ajp166＠bellatlantic.net

> >Subject: Re: vac tubes / was Re: Schematics of Atanasoff-Berry > From: ard at p850ug1.demon.co.uk (Tony Duell) > Date: Sat, 06 Sep 2008 21:34:08 +0100 (BST) > To: cctalk at classiccmp.org > >> > I really don't understand this modern love with making things as >> > small and light as possile. I'd rather have things that are heavy >> > enough to stay put (in the case of a rack unit, not to topple, or >> > even feel wobbly when units are extended ot the maintenance position) >> > and that are large enough for me to be able to work on them. > >[For the record, I consider the OP's comment that he wants to use a PC >PSU becuase he has one or that it's convenient, or.. to be entirely >reasonable.] > >> >> Bigger and heavier means less items in your collection to fit in the >> space, and a smaller number before the floor falls out from underneath >> of it. I'd hope you could appreciate that. :) > >So by that arguemnt we should all collect handhelds, not desktop and >rack-mounted machines :-) > >> Another problem I seem to have is that the heavier an item is (and >> harder it is to move myself), the less I seem to be able to find people >> to help move it. > >Fortunately I don't mind having to dismantle something to move it. Many >of my larger machines came into the house in small-ish pieces. I >remember, for example, dismantling a DEC RA60 on the back of a friend's >pick-up truck (fortunately the RA60 is dismantled from the top down, so >this wasn't hard), taking the bits inside and then putting them back >together. > >Gettign back to the OP's heater supply, I don't think a mains-input >heater transformer to supply 5 normal-sized receiving valves is going to >make the device impossile to lift. If you used ECC83s (12AX7s), I think >you could use a 20VA transformer with no trouhle at all, and that's >hardly large or heavy. > 12AX7 at 12.6V @.15A (1.8VA) or parallel connected 6.3V @ .3a and I consider that trivial. A transformer sufficient to run 10 of those (18VA) is under 2-3pounds. The average 12V at 1A wall wart can run six of those with a comfortable margin. We are not talking a lot of power yet. If we are in the realm of 100 or 1000 of those then we have some power needs to deal with.. The solution there would be to use instead of one 12.6V transformer that can give 150A we can use ten more readily available transformers of a mere 15A (189VA) which is more manageable anyway. That same transformer (assume 12.6V AC) could using a voltage multiplier easily supply 40-45V where the valves would have a decent usable performance. This is easy as those valves at 40-50V will only need a few milliamps per plate circuit. I know this as I built a 5 tube reciever (6AN8, 6AU6, 6BH6, 6CW4, 6dl6/ECL84) for 80/75M and the whole radio fits in a 7x8 chassis and with the power transformer and audio output transformer is under 6 pounds. The transformer used was salvage but had a 150V 100mA winding and a 6.3V 3A winding (total of 34VA) and that was not even stressed hard and weighed on at under two pounds. Another example is 40 years ago I had a Beckman EPUT (events per unit time) counter that used the then typical tube era 5mhz ring counter decades with neon readout (0-9 with NE2 type neon behind them) (6 ofthem) plus timebase for a whopping 42 tubes mostly of the 12AX7 types and it was big (19" rack width by 11" high) but I distinctly remember it as barely 40 pounds considering it was fully enclosed in a steel case and each decade was in its own case that plugged into a matching socket in the cabnet. Powering tubes in that class (ECC83s) is trivial compared to the day of the ABC where typical dual triode was maybe in the class of 6SN7 (6.3V at .6A) or worse. Early tubes where power hungry for heater power. Allison > >> I in no way said that I wanted everything made of lightweight (and >> easily breakable) plastic, it's just annoying when things are severely >> over-enginered and thus increase the weight, or use heavier components >> when lighter ones would work in a perfectly acceptable manner. > >Well, there are limits, but I must admit I tend to admire solid >overengineered devices. > >-tony

17 years, 11 months

2
1
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ECC on MFM drive

by aek＠bitsavers.org

> I have ST251 drive and an Adaptec controller. Look at the chip set data sheets on bitsavers.

17 years, 11 months

1
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[Toronto Canada] - AES Plus free for collection

by john_a_s2004＠hotmail.com

Hi, I have had an email from an owner of an AES Plus system, who is looking to give it away to a good home. This system is a dedicated Word Processor, built around an 8080 processor. The owner has loads of disks too, these might be rare 16-sector hard-sectored types and so it would be worth collecting the system just for the floppies. If you are able to collect the whole system from the Toronto area, please email me and I will pass your details on. Regards, John _________________________________________________________________ Make a mini you and download it into Windows Live Messenger http://clk.atdmt.com/UKM/go/111354029/direct/01/

17 years, 11 months

2
1
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IBM memory available

by pat＠computer-refuge.org

I've got a bunch of DIMMs pulled from RS/6000 SP hardware available for not much cost. The memory is 3rd party (Kingston) 512MB DIMMs that were used in Purdue's SP high node systems. Third-party memory doesn't seem to be worth much, so I'm not asking too much, say $10+shipping per set of 8 or so. These are equivalent to IBM FRU 07L9758, F/C 4121 or 4100 This memory works in at least the following systems: 7044-170 (44P-170) 7044-270 (44P-270) pSeries 640 / B80 pSeries 620 9076-270 thin/wide and 9076-N81 SP high nodes Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

17 years, 11 months

4
5
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lead-free solder (was: Setting up a VAXstation)

by halarewich＠gmail.com

heres a link to some lead solder http://www.acehardware.com/product/index.jsp?productId=1290635&cp=2568443.2… Chris On 10/2/07, Zane H. Healy <healyzh at aracnet.com> wrote: > > At 11:37 PM +0100 10/1/07, Tony Duell wrote: > >For the first part, I'd offer to do it for you, but it would be illegal > >to do so. Owing to our totally daft laws, (a) I'd have to use lead-free > >solder, which I don't have, don't trust, and am not set up to use and > > How hard is it to work with lead-free solder, and is it becoming a > problem to get traditional solder in the US? I've been meaning to > pick up a few rolls. As I'm still using a roll purchased in the 80's > from Rat Shack for building a couple things for my VIC-20, I haven't > been going through it that fast. Though I seem to be using it more > often now than. > > >(b) > >it has been said that if an enthusiast (specifically a model engineer, > >but it would apply here too) does jobs for others, then his workshop > >becomes a workplace and is covered by all the daft health-and-safety > >rules that I have no desire to get involved with, and which quite > >honestly, would stop me from getting on with things. > > Does it count as a job if you don't take payment? > > Zane > > > -- > | Zane H. Healy | UNIX Systems Administrator | > | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | > | MONK::HEALYZH (DECnet) | Classic Computer Collector | > +----------------------------------+----------------------------+ > | Empire of the Petal Throne and Traveller Role Playing, | > | PDP-10 Emulation and Zane's Computer Museum. | > | http://www.aracnet.com/~healyzh/ | >

17 years, 11 months

20
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Interesting driver...

by geneb＠deltasoft.com

While reading comp.sys.cbm, I ran across this site: http://simonowen.com/fdrawcmd/ I would imagine that this driver would come in quite handy for those wanting to work with foreign formats while using Windows. g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind.

17 years, 11 months

1
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Mac SE Flyback!

by julianskidmore＠yahoo.com

Hi folks, I hope a Mac SE is old enough to chat about here - it's hardly newer than my pdp11 or Vax! Anyway, the Mac's good, but the flyback Transformer burnt out a while back and I was wondering what would be a suitable replacement. I have information on the Mac Plus analog circuitry from Mac Tech and the parts numbers for the Mac SE flybacks. However, none of this gives me the spec for the flyback and since AFAIK they're not available any more, I'm wondering how to get a suitable replacement. It doesn't have to look the same, it just has to work and be reliable! http://www.biwa.ne.jp/~shamada/fullmac/repairEng.html Tai-Ho/Taiwan R.O.C. TH-1565C Mac SE Lifon/Taiwan R.O.C. 157-0042-A Mac SE, Repaired analog board, SE/30 Lifon/Taiwan R.O.C. 157-0042-B Mac SE, Repaired analog board, SE/30 Lifon/Taiwan R.O.C. 157-0042-C Mac SE, Repaired analog board, SE/30 http://home.earthlink.net/~gamba2/images/plus_analog.PDF This is probably going a bit far ;-) : http://members.misty.com/don/samflyhv.html -cheers from julz @P

17 years, 11 months

2
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FORSALE: IMSAI 8080 in excellent shape

by michaelgreen42＠comcast.net

Picked up a recent acquisition and thought I would try here before I send to eBay. I have an original IMSAI 8080 in great condition. It comes with two floppy drives. I don't really know how to test but it powers up and all the blinking lights come on. Taking best offer of cash/trade. I'm located near Seattle WA. Obviously if you're local trades will be easier. Email me with offers.

17 years, 11 months

1
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VCF East 5.0 This Weekend, September 13-14

by sellam＠vintagetech.com

\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/ Vintage Computer Festival East 5.0 Saturday and Sunday, September 13-14, 10am to 6pm InfoAge Learning Center, Wall Township, New Jersey http://www.vintage.org/2008/east/ /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ The 5th annual Vintage Computer Festival East is happening THIS WEEKEND! Come and join us to celebrate the history of the machines, stories and people of the computer revolution. VCF East 5.0 is taking place on Saturday, September 13th through Sunday, September 14th from 10:00am until 6:00pm at the InfoAge Learning Center in Wall Township, New Jersey. The VCF features an excellent line-up of speakers, a fantastic exhibition of vintage computers, and a marketplace where you can find that one item you're looking for to get that old machine running again! Highlights of VCF East 5.0 include a presentation by Bill Mauchly, son of computer pioneer and ENIAC co-inventor John Mauchly, as well as the grand opening of the MARCH Grabbe Computer Museum at the InfoAge Learning Center. -=/ VCF East 5.0 Speaker Schedule /=- Saturday, September 13 Time Speaker Topic -------- ---------------- ------------------------------------------ 10:30 AM Watts Humphrey MOBIDIC and Fieldata 12:00 PM Claude Kagan Memories of the Computer Industry 1:15 PM Evan Koblentz MARCH - Grabbe Computer Museum Opening Sunday, September 14 Time Speaker Topic -------- ---------------- ------------------------------------------ 10:30 AM Fred Carl What's up with the InfoAge Science Center? 11:30 AM Bill Mauchly ENIAC: The Heaviest Personal Computer For more information on our speakers including talk abstracts and bios please visit: http://www.vintage.org/2008/east/speaker.php -=/ Workshgops /=- VCF East 5.0 is hosting two workshops by Vince Briel, creator of the Replica 1 (Apple-1 clone) and micro-KIM (KIM-1 clone). In each workshop VCF attendees will be guided through the construction of your choice of vintage computer replica by Vince himself. There are still open slots but they are filling up fast. Reserve your spot today! Information on the workshops can be found here: http://www.vintage.org/2008/east/workshop.php More information about Vince's replicas can be found at the Briel Computers website: http://www.brielcomputers.com/ -=/ InfoAge Learning Center Tours /=- Tours of the InfoAge Learning Center (the host of VCF East 5.0) are being held throughout the day concurrently with the VCF. For more information, please visit: http://www.infoage.org/ For complete information on VCF East 5.0 including admission and directions, please visit the VCF East 5.0 website: http://www.vintage.org/2008/east/ Best regards, Sellam Ismail Producer Vintage Computer Festival -- 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 ]

17 years, 11 months

1
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DEQNA/DELQA cab kit with DEUNA/DELUA?

by jam＠magic.com

> Do you know what the extra two lines are for on the DELQA?. Do > they also exist on the DEUNA? Better yet, can you point me to the > printset for a DEUNA? >From the DEUNA print set ... The transceiver cable connects the following signals from the DEUNA to the AUI connector: 1 Power 4 Power return 6 Receive+ 7 Receive- 10 Transmit+ 11 Transmit- 14 Collision+ 15 Collision- 20 Fuse low In addition, the other pins on the DEUNA connector are: 2 Power (same as pin 1) 3 Power return (same as pin 4) 5 Ground 8 Ground 9 Ground 12 Ground 13 Ground 16 Ground 17 Open 18 Open 19 Open I'll try to get a chance to scan the DEUNA print set this week and send it over to bitsavers. James Markevitch

17 years, 11 months

2
1
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Free: Heathkit H-89

by silent700＠gmail.com

Not mine - just found it on Craig's. Too far from me or I'd be all over it myself: http://grandisland.craigslist.org/sys/822183001.html

17 years, 11 months

1
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DEQNA/DELQA cab kit with DEUNA/DELUA?

by oldcpu2＠rogerwilco.org

On Sun Sep 7 12:35:44 CDT 2008, James A. Markevitch said: > From the DEUNA print set ... > > The transceiver cable connects the following signals from the DEUNA to > the AUI connector: > > 1 Power > 4 Power return > 6 Receive+ > 7 Receive- > 10 Transmit+ > 11 Transmit- > 14 Collision+ > 15 Collision- > 20 Fuse low This is great information. Thanks! Just checked the DELQA printset which gives the following for the 20-pin BERG: 1 Power 2 (key, pin blocked) 4 Power Return 6 Receive + 7 Receive - 10 Transmit + 11 Transmit - 12 Shield 14 Collision + 15 Collision - 18 Control out circuit A 19 Control out circuit B 20 Fuse OK which seems to agree entirely with the DEUNA information you have. This is good news! > In addition, the other pins on the DEUNA connector are: > > 2 Power (same as pin 1) > 3 Power return (same as pin 4) > 5 Ground > 8 Ground > 9 Ground > 12 Ground > 13 Ground > 16 Ground > 17 Open > 18 Open > 19 Open Okay, very nice to know this. > I'll try to get a chance to scan the DEUNA print set this week and send it > over to bitsavers. That would be great! I don't think there is any particular urgency, now that I have the BERG pinouts, but I'm sure the community at large (and me) would appreciate having that online somewhere in the future. Many thanks! - Jared

17 years, 11 months

1
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DEQNA/DELQA cab kit with DEUNA/DELUA?

by oldcpu2＠rogerwilco.org

On Sun Sep 7 05:37:28 CDT 2008 tiggerlasv said: > As far as I can tell, the pinouts for the 20-pin BERG connectors > on the DEQNA, DELQA, and DEUNA are functionally equivalent. > > (The DELQA uses 2 extra lines, but those will most likely be ignored, > particularly if you're using a media converter, to translate to RJ45. > . .) Yes, I've got a few AUI-to-TP transcievers and I plan to use one of them to make the connection to the LAN. Do you know what the extra two lines are for on the DELQA?. Do they also exist on the DEUNA? Better yet, can you point me to the printset for a DEUNA? > You can also use the DELQA / DEQNA cab-kits interchangeably, > for basic ethernet operations on the PDP-11. . . Yes, thanks for confirming this. I do have a handful of DEQNA setups and last year picked up a DELQA. Indeed, I successfully used a DEQNA cab-kit on the DELQA when I tested it out. Thanks for the good info! - Jared

17 years, 11 months

3
2
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Nuclear Data ND-812 info...

by derschjo＠msu.edu

Hey all -- Got my hands on a pair of Nuclear Data ND-812's (thanks, Mike!) and I'm looking for any info/software for them. I've got the stuff off of Bitsavers already :). 12-bit machine from ~1971, toggle switches and blinky lights. Actually, these are BR2412s -- evidently military versions of the ND-812. They're green :). The other major differences (from glancing through the maintainance docs on Bitsavers and comparing to mine) are that the ND-812 used core memory, and the machines I have use DRAM (Looks like 24kw of Intel 1103's!). And as a result the BR2412 has a completely different power supply, which I'd love to have information for so I can test it out before powering these things on. And I assume the color scheme was different :). Anyone know the history of this machine (or even the company itself? Did they make any other computers?) I can't find too much information on the 'net... Josh

17 years, 11 months

1
1
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Using WatCom WASM.EXE - How to obtain a listing file?

by jhfinedp3k＠compsys.to

This must be a really dumb question, but I don't seem to be able to figure out how to obtain a listing file. I just downloaded open-watcom-c-win32-1.7a.exe and installed it without any difficulty. It assembles my source file and I can link with wlink. It all works perfectly. After more than 2 years, I am able to duplicate the DLL file that I am using and which I want to modify. But wasm /h command does not even mention anything about a listing file! Is there any way that I can obtain a listing file of the assembled source code? Thus far, WatCom has the only assembler / linker pair that I have found which can duplicate the DLL that I am using. So shifting to a different assembler may not be useful. Does WatCom have another EXE file that I am missing that is used to produce a listing of the assembled source code? Also, it would be helpful to have a link map, although right now I probably would not know what to do with one. Sincerely yours, Jerome Fine

17 years, 11 months

2
1
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OT: Linux and OpenOffice

by tonym＠compusource.net

-----Original Message----- >From: John C. Ellingboe john at guntersville.net >Sent 9/6/2008 3:56:36 PM >To: General Discussion GeneralDiscussion@ >Subject: Re: OT: Linux and OpenOffice > >I use Debian Linux which Ubuntu is based on but there can be some real >differences in places. There is a Ubuntu user mailing list where you >can get the best help/info ever for that distribution. I have been >using Debian for close to 20 years now and because of my age it is kinda >like a comedian once remarked "I don't believe I know all I understand >about that." :-) I guess there have been too many changes over the >years for an old man to keep up with them all. > Now - with my specific issue, would it be smarter for me to sniff around FireFox forums/lists first? Or go to the distro forums/lists? Tony

17 years, 11 months

5
4
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Computer Automation library floppy images

by hamren＠sdu.se

> There are now about 400 disks from Computer Automation's program > library up at http://bitsavers.org/bits/ComputerAutomation/8_imd. > They are in imagedisk format, and are all single sided, single density. Excellent. Thank yoy, Al! I will download and extract them where I can. I have written a program that can decode LSI-[24] file systems and file storage format. I'll inform the list when it's done. Al: You post was also addressed directly to me, but I did not receive it. As far as I can see it never reached my mail server. /Lars Hamr?n

17 years, 11 months

1
0
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OT - Simple Read / Write Detection on Individual SATA II Drives

by jhfinedp3k＠compsys.to

I realize that they don't qualify for the 10 year rule, however, since I will be using them to run Ersatz-11 to run RT-11 software from 1985 which does qualify, I hope that this question is not too OT. Up until 10 year ago, even drives for a PC had individual LED circuits which provided a status when a read or a write request was being processed. Now, I can't find any drives which have such an LED. Tony (any anyone else who may know the details), perhaps you have the hardware knowledge as to what might be required to add a circuit with an LED (or anything else that would do the job) which would provide a status when a SATA II drive is being accessed. Separate read and write would obviously be even better, but a single LED would be more than adequate. My concept would be to modify the existing cable between the motherboard (or the controller) and the drive so that an LED could be wired in with the appropriate hardware. The wires on the LEDs should be long enough to allow them to place the LEDs outside of the case so that the user can watch then as needed. Even better might be really long wires that would allow the LEDs to be attached to the monitor. From what I know of LEDs, the current that they draw would not be a problem with wires that are many feet long. Can anyone suggest if this is a feasible project? I realize that the motherboard which has a display LED status capability for all hard drives is available, but then I don't see the status for an individual drive (I have 3 SATA II drives), let alone if the request is a read or write - assuming that it is possible to show read and write separately. Plus if the LEDs were attached to the monitor, that would be much more convenient. I actually have such a software display on my monitor right now for each of my UDMA 100 drives which is really helpful, but I don't know of any software which is set up to do that with current systems Sincerely yours, Jerome Fine

17 years, 11 months

2
1
0 0

Altair 8800

by evan＠snarc.net

Anyone know how much an 8800 weighs?

17 years, 11 months

6
7
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DEQNA/DELQA cab kit with DEUNA/DELUA?

by tiggerlasv＠aim.com

As far as I can tell, the pinouts for the 20-pin BERG connectors on the DEQNA, DELQA, and DEUNA are functionally equivalent. (The DELQA uses 2 extra lines, but those will most likely be ignored, particularly if you're using a media converter, to translate to RJ45. . .) You can also use the DELQA / DEQNA cab-kits interchangeably, for basic ethernet operations on the PDP-11. . . As info. . . .

17 years, 11 months

1
0
0 0

DEQNA/DELQA cab kit with DEUNA/DELUA?

by oldcpu2＠rogerwilco.org

For all the DEC fans here, since I haven't been able to locate a print set for the DEUNA, I was wondering if the cabinet kit that goes between the UNIBUS DEUNA board and the 15-pin AUI connector is functionally the same as the cab kit for a QBUS DEQNA / DELQA? In other words, can a DEQNA / DELQA cab kit be used with the DEUNA ethernet controller, or are they different (pinouts, etc.)? I'm trying to organize all of the parts I'll need to get a VAX 11/750 online, once I finish up the power supply troubleshooting and get the system operational again. Thanks. Jared

17 years, 11 months

1
0
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IBM PS/1 2121 system info/monitor

by thibergep＠limestone.on.ca

Mike I have one - my apartment looks like an elephant dying ground for computer components. I was about to dump it on a local "sell" site for $10. It hasn't been used in 8+ years.... $10 + shipping *if* you are still looking Pamella

17 years, 11 months

1
0
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Cipher 9-track drives @ RE-PC in Tukwila, WA

by derschjo＠mail.msu.edu

Subject says it all. No idea if they work... 2 drives, $22.50 each. Look like 995s's. Thought someone might be interested... Josh

17 years, 11 months

1
0
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BYTE magazine article index

by rcini＠optonline.net

All: I found a 10-year-old thread from this list discussing the existence (or lack thereof) of an on-line or off-line article index for the entire BYTE magazine series. From the thread it seemed that one didn?t exist at the time. I have the complete series from issue #1 to about mid-1988 and I find it difficult to zero in on particular topics. If I had a searchable article database, I could then make better use of my archive. I?ve done some googling for an index but haven?t come up with anything concise yet. Is anyone aware of an on-line index for BYTE? Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini

17 years, 11 months

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Free Linux and OpenOffice - even if your email address doesn't

by tonym＠compusource.net

>-----Original Message----- >From: Ray Arachelian ray at arachelian.com >Sent 9/1/2008 12:43:26 AM >To: General Discussion GeneralDiscussion@ >Subject: Re:Free Linux and OpenOffice - even if your email address doesn't > I know I said I wouldn't reply, but my God, man, you are totally out of touch with reality. I see stories about people like you on CNN - "He was always very quiet, and kept to himself..." Ray, check yourself into the nearest mental health institute, for your sake, for your family's sake. You're not stable, man. Ya got serious issues interfacing with humans, serious issues understanding simple 5th grade sentences, and some strange need for cursing to feel like a man... I once heard a saying when I was young: "Profanity is the device that makes ignorance audible." And what WAS all that psychotic, incoherent babbling? I have NO idea what you were ranting about, but seek help. Um, this WILL be my last message to, or about you, because there is NO way that you are a stable individual, with all that incoherent rambling, and I do NOT want to be the one responsible for you "snapping," and going on a spree... So, I'm pretty sure, knowing your type, that you want the last word, so go ahead and have it, so we can end this, and maybe avoid you going on a rampage of some sort and hurting yourself, or or worse, someone else.

17 years, 11 months

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installing more memory

by aliensrcooluk＠yahoo.co.uk

Hi, i have installed extra RAMinto my Amiga 600 before (in the trapdoor) which plugs in straight. However, plugging the extra RAM i just got for my laptop (Dell C610) requires it to be inserted into the slot at 45 degrees and then moued parallel (flat) on the pcb until you hear a click! (thats what it states in the C610 manual) Who's idea was that and are there any pitfalls i should be aware of? (other than damaging the connectors) - Andrew B (via mobile)

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

>-----Original Message----- >From: Chuck Guzis cclist at sydex.com >Sent 9/6/2008 4:55:19 PM >To: General Discussion: On-Topic and Off-Topic Posts cctalk at classiccmp.org >Subject: Re: OT: Linux and OpenOffice > >Bottom line for me is that I need to run Windoze for my musical >notation editors (Finale and Sibelius). While it's true that a few >folks have gotten them running under Wine, performance is sub-Windows >(didn't think that was possible) with numerous gotchas that I don't >want to deal with. > >Both Coda and Sibelius officially state "There are no plans to >produce Linux compatible versions of our products". They're only locking themselves out, if there is a semi-comparable product. I know it MAY have sounded like I was anti-Linux a week or two ago, but it's quite the opposite. Right tool for the job... >I can't imagine that it's just the music people who are alone in this >respect. While Linux does have some music notation utilities >(Rosegarden, NoteEdit, Lilypond), none of them have the polished >utility of Finale or Sibelius. I suspect that when you get in the >area of $500+ single-user license specialty software, Linux isn't an >option. > >So I grit my teeth and deal with Microso~1. Or use my Mac. > >And yes, this is vintage--people have wondered about this for more >than 10 years. Another shame is that Sibelius discontinued the >version of its software that ran on the Acorn. It used to be the >reason to buy an Acorn for many. > Acorn RiscOS machines? I acquired a RiscPC 700 from a chap in Missouri - how he came to acquire it, I have no idea. I found some links to wire in a PC power supply, and I yanked one from one of those book pc's. This one even had an ethernet interface in it! Very unique machine - I got through fleaBay a Strongarm 200mHz CPU board, and the machine already had an HD and a CDROM. Also from the UK i got a 2nd "slice" to make it a double-decker, and a ROM+RiscOS upgrade. I quickly lost interest in that, though.. but it was an interesting machine. I ended up selling it on fleaBay for about $200 or so to someone here in the states. I'm sure many others on the list as as I am - I like to acquire things, learn them, and then pass them on to someone else, and I've done that with SGI's, Sun's, HP unix workstations, I had a DG with AOS on it (never learned THAT though) as well as playing with Hercules IBM mainframe emulator for MVS 3.8 and VM/370 R6 Tony

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

>-----Original Message----- >From: John C. Ellingboe john at guntersville.net >Sent 9/6/2008 4:20:40 PM >To: General Discussion GeneralDiscussion@ >Subject: Re: OT: Linux and OpenOffice > >tonym wrote: > Oh - and leave it to ESPN to support only Windows and Mac at espn360.com with > their video player. > > Tony > >You do run into sites like that. That is where a Virtual Machine with >Windows or X 10 would come in handy at times but I just figure I can >probably do just fine without them. > Meh - forgot it doesn't matter... When there's a game on that is ONLY on ESPN360.com, you can forget about it... HORRIBLY slow, no matter WHAT your bandwidth is. I tried to watch the Miami Hurricanes game on 8/26, and it wasn't viewable. Of course, about 30min after the game ended, you could view the replay, and it was just fine. <Rant> Ya know, ESPN, if you're going to make a game EXCLUSIVE to espn360, get a little more bandwidth </Rant> Anyways - this Ubuntu is pretty neat, so far. About to try it on the dock. And I'm still seeing about 15% more battery life under Ubuntu vs XP SP2, and that's on 2 different batteries, so it's not a fluke.... Tony

17 years, 11 months

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vac tubes / was Re: Schematics of Atanasoff-Berry

by wbblair3＠yahoo.com

> Would not a green & red Ne-2 would fit the mood > better. > If you have the HV why not go nixe tube? I'm trying to use 12V as B+.

17 years, 11 months

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vac tubes / was Re: Schematics of Atanasoff-Berry

by wbblair3＠yahoo.com

William Donzelli wrote: > > I've got several homemade variable DC supplies, > but they are all limited to 1.5A output which would be > exceeded with just three 5BK7A filaments @ 600mA each. > > An old filament transformer would solve all your problems > in this area. Not expensive. Can't get much cheaper than effectively free for a well regulated, high current DC power supply using a modified PC power supply that isn't otherwise being used. Plus, the idea of using tubes with 5V filaments instead of 6.3/12.6V reduces the competition with typical audio tube customers and makes the use of a high-current 5VDC supply possible. For the homebrew 1.5A adjustable DC supplies, I use LM317HV based units plugged into a homebrew chassis where I've mounted a range of three different inexpensive, surplus, multi-secondary transformers with output voltages ranging from 70VCT to 12.6VCT. The chassis has binding posts for each secondary and I just plug the banana plugs for the various inexpensive LM317HV adjustable DC supplies into whatever AC outputs most closely match the DC voltages I need at the time in order to reduce the power dissipation requirements of the LM317HVs.

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

Oh - and leave it to ESPN to support only Windows and Mac at espn360.com with their video player. Tony

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

>-----Original Message----- >From: John C. Ellingboe john at guntersville.net >Sent 9/6/2008 2:31:55 PM >To: General Discussion GeneralDiscussion@ >Subject: Re: OT: Linux and OpenOffice > > Trying to get the satellite images from the NOAA website at > http://www.goes.noaa.gov/HURRLOOPS/huvsloop.html > > I keep getting errors about java not being enabled, and under Edit-Prefs, > I see both javascript and java enabled. > >I'm using the Ubuntu-included FireFox, which is 3.0.1 > > Tony >Check the package installer and see if they have sun-java or some such >name. I have run across several packages for some kind of java and the >sun version of java is the only one that ever worked for me. Same deal - I gotta have SOMETHING set wrong... it still comes back to saying that java isn't enabled. Also, when I go to www.wagerline.com, the mouse-over drop-downs aren't visible, as they are overlaid by the flash anim. I used the adobe version - should I have selected on of the others instead? And no, I'm not a gambler - I use it as a ref to see how my boys are getting judged (Miami vs Florida). Tony

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

>-----Original Message----- >From: Jim Leonard trixter at oldskool.org >Sent 9/6/2008 3:44:51 AM >To: General at mail.mobygames.com, Discussion at mail.mobygames.com >Discussion at mail.mobygames.com@ >Subject: Re: OT: Linux and OpenOffice > >Tony Mori wrote: > This will not turn into a pro/con sucks/doesn't suck discussion, as I am > sure that horse was beaten beyond dead long ago... > This is just a req to ask for what people are running out there, as a > suggestion for what I should try. > >My wife and young children have found Ubuntu 8.04.1's desktop very easy >to pick up and use; in fact, my wife has switched to it full-time, and >only reboots into Windows when she needs to fill her iPod, then boots >back into Ubuntu. >-- > Ubuntu looks pretty nice, even just the 'LiveCD' session i tried... I booted up gOS beta 3, and it looks an awfuuuuul lot like Ubuntu...I assume there's some cross-breeding there My WiFi worked on the Ubuntu LiveCD session, but does not under gOS LiveCD... The old-school distros as nice as these out-of-box? Like Debian/Slackware/Suse/etc... ? I'm starting an install of Ubuntu as we speak Now, Jim, before I go digging, wasn't it you that mentioned some extra proggies for running games? Was that to use std win games under *nix? Tony

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

>-----Original Message----- >From: John C. Ellingboe john at guntersville.net >Sent 9/6/2008 2:31:55 PM >To: General Discussion GeneralDiscussion@ >Subject: Re: OT: Linux and OpenOffice > >tonym wrote: > Guys, I am having one issue, and haven't figured it out yet... > > Trying to get the satellite images from the NOAA website at > http://www.goes.noaa.gov/HURRLOOPS/huvsloop.html > > I keep getting errors about java not being enabled, and under Edit-Prefs, > I see both javascript and java enabled. > > I'm using the Ubuntu-included FireFox, which is 3.0.1 > > Tony >Check the package installer and see if they have sun-java or some such >name. I have run across several packages for some kind of java and the >sun version of java is the only one that ever worked for me. > Thanks - downloading as I type this... I figured as much last night, and downloaded/installed the JRE from java.com, but it must've gone into the wrong place. I shoulda' checked the package manager, I mean, it has a search function sitting right THERE :) Tony

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

Guys, I am having one issue, and haven't figured it out yet... Trying to get the satellite images from the NOAA website at http://www.goes.noaa.gov/HURRLOOPS/huvsloop.html I keep getting errors about java not being enabled, and under Edit->Prefs, I see both javascript and java enabled. I'm using the Ubuntu-included FireFox, which is 3.0.1 Tony

17 years, 11 months

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OT: Linux and OpenOffice

by tonym＠compusource.net

> >-----Original Message----- >From: Jules Richardson jules.richardson99 at gmail.com >Sent 9/6/2008 11:27:57 AM >To: General Discussion GeneralDiscussion@ >Subject: Re: OT: Linux and OpenOffice > >tonym wrote: > The old-school distros as nice as these out-of-box? Like Debian/Slackware/Suse/etc... ? > >I started out in the SLS days, then went to Slackware and have stuck with it >ever since.... more effort to set it up how you want it, but then once there >it works really well. > I can tell you, so far, I am MORE than mildly impressed... little things like: 1) Batteries seem to last about 15-30 minutes more, depending on utilization. 2) In FireFox, entering "google.com" and pressing "enter" the page come up nearly instantaneous. IE takes 3-4 sec. 3) GUI looks pretty nice - what's with that flaming chicken? :) reminds me of HP's "verve" laptop paintjobs. 4) All hardware worked out of the box, but my speakers are messed up, so I can;t play with sound... I need to dig a little more, and get into setting up the other requirements. Tony

17 years, 11 months

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kevin stumph?

by aek＠bitsavers.org

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130252592903 this is fairly disturbing "ryanstumph" is the seller, and it sounds like he is ripping machines apart for the control panels.

17 years, 11 months

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N8VEM Disk IO peripheral

by lynchaj＠yahoo.com

Hi! A while back I mentioned the N8VEM SBC which is a new Z80 home brew project designed in the "classic" late 1970's style. There was some discussion about the merits of using RAM/ROM drives versus "real" drives like IDE hard drives and floppy disk drives. Work continues on the N8VEM project to include supporting "real" drives. The SBC PCB and the ECB backplane PCB are basically done and available for builders to make their own home brew Z80 CP/M computer. The next project is an ECB bus monitor, which is basically done awaiting the PCB order, and the next project is the Disk IO board. I am currently working on the Disk IO board as my main activity. The Disk IO board is comprised of two parts; an IDE interface and a FDC interface. The IDE section is basically done, works just fine, and is supported in the CBIOS. No doubt it could be improved with some TLC but it works well enough for my purposes. Like the rest of the N8VEM project, it is comprised of "standard" commonly available DIP parts with no custom or programmable elements except for the SBC EPROM. I am currently working on the FDC section and making some progress thanks to some wise and very helpful persons (you know who you are!) The design exists, is based on a NEC 765 reference design at the ALPACA project, and a working but obviously still in development prototype board is on my bench. As part of the development, I am writing a "disk monitor" program to exercise the i8272 FDC chip. Currently, I can use it to read sectors from a 320K IBM PC MS-DOS formatted 5.25" floppy disk in a Tandon TM100-2A minifloppy drive, print status, dump sector memory, etc. If anyone would like to join in the development of the Disk IO board, please contact me to discuss. I am making slow but steady progress but am sure having another set of eyes to review and write code would help a lot. This would be a great way to make your own Z80 CP/M home brew computer WITH "real" drive support. http://groups.google.com/group/n8vem Thanks and have a nice day! Andrew Lynch

17 years, 11 months

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CPT 8000

by gsimpso3＠bellsouth.net

Hello Adrian; I read a thread from 2004 on classiccmp.org's website about your CPT 8000 and wonder if you still have it? If so I may be able to help you out with any missing parts, program disks, diagrams, etc. just for the price of shipping. I used to service the machines for the local vendor from 1980 to 1990 and rescued a pile of parts and documentation that were headed for the dumpster when they were made obsolete by the PC in the late '80s. I even managed to save several intact machines. The CPT 8000 and its descendants were quite advanced for their time and had features that CPT's competitors (IBM, Wang and Lanier) couldn't come close to matching. I haven't fired my 8135 up in quite a few years so I'm not sure if any of the software floppies are still readable. All my program disks may already be unreadable. --Gary Simpson

17 years, 11 months

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ENIAC vs. ENIAC-on-a-Chip IC implementation

by wbblair3＠yahoo.com

Brent Hilpert wrote: > > Getting the 1946 documentation set would be a good > start. CHM had the first > > volume, which had a partial transcription on the chip > web site which I've > > scanned and put up under > http://bitsavers.org/pdf/univOfPennsylvania/eniac > > Thanks, that's far more info and detail than I've > seen anywhere else to date. > Looks like it may be most of what one needs for a machine > definition, but have > to study it more to see if one can derive > 'everything' from it. The 207 page ENIAC patent is pretty detailed: http://www.fh-jena.de/~kleine/history/machines/EckertMauchly-ENIAC-us-paten…

17 years, 11 months

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Available for pickup: IBM hardware, FC SAN

by pat＠computer-refuge.org

I've got access to some IBM H50 systems that are being retired from work, with 4x332MHz processors, 3+GB ram (whatever the max is, 3.25 or 3.5GB I can't remember), some disks, and a 10/100 NIC. The disks have been erased, but they'll run up through AIX 5.3 I think. I'm not going to ship these because of weight, but shipping one or two parts from one is probably doable. Cost will be not unreasonable, but not free. :) I can hold onto them for a week or two probably, but not much longer than that. I'm also try to rid myself of my old 1Gb, MTI Fiberchannel gear. I've got a switch or two, and several 12-disk (1.6") 3U JBODs with 36GB and 50GB 1.6" tall FC-AL 1GB disks. I could pull and ship disks from this if you want them in multiples of 12, but I don't want to try to ship this either. These will probably be around for a month or so before I have to do something I don't want to with them. :( Make offers.. Also, if by any chance, someone is interested in driving here and picking up a frame or 3 of IBM SP nodes (quad 375MHz POWER3-II thin nodes) or an E10k, let me know... These are in West Lafayette, IN, USA (47906). Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

17 years, 11 months

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vac tubes / was Re: Schematics of Atanasoff-Berry

by wbblair3＠yahoo.com

Chuck Guzis wrote: > > Can't get much cheaper than effectively free for a well regulated, > > high current DC power supply using a modified PC power supply that > > isn't otherwise being used. Plus, the idea of using tubes with 5V > > filaments instead of 6.3/12.6V reduces the competition with typical > > audio tube customers and makes the use of a high-current 5VDC > > supply possible. > > For digital circuits (I assume that's what we're > still discussing), why is a DC heater supply necessary? Because I don't want to hear 60Hz hum when I plug my headphones into the flip-flop output. ;-) Seriously, you are absolutely correct that AC could be used for the filaments in this case, but the PC power supply is being built for multiple uses and will just happen to be there for these tube logic experiments. I planned to mod the PC power supply well before coming up with this low voltage tube logic project (which may or may not succeed). My goal is also to provide a commonly available, cheap and multi-use power source for the tubes that could be duplicated by others if I succeed in this and decide to put the tube logic project on a web page. Like me, rather than just building a supply that would be used only with the tube project, they would be building a very cheap, high-current DC power supply useful for other purposes. > If you do decide to use a regulated DC supply with > overcurrent protection, keep in mind that cold heater inrush current > can be substantially greater than the nominal heater current > rating. Right now, my goal is to build just an astable multivibrator clocking a 4-bit counter. To show the alternating state of the multivibrator, I'll light the tube from below through the hole in the center of the socket with a two-color LED and the states of the counter tubes will be indicated by lighting them from below with a red or blue LED. I've got the special effects visualized, but that's the really easy part.

17 years, 11 months

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DG Aviion

by rborsuk＠colourfull.com

Hi All, I'm looking for someone with a Aviion 88k box they would like to get rid of ($$ or trade). I have over 2 dozen hard drives loaded with software that I would like to archive before I re-commission the drives. Please drop me a line off list. Thanks Rob Rob Borsuk email: rborsuk at colourfull.com Colourfull Creations Web: http://www.colourfull.com

17 years, 11 months

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OT: Microsoft crazy academic deal

by tonym＠compusource.net

I thought some of you might appreciate this... Microsoft is offering for one day only, today, Office Ultimate Edition for $59.95. This has everything in it, I think retail is like $500-600. www.theultimatesteal.com Ya need to have access to an email address at a .EDU though. You enter in the email addy, and it emails a link to the address. Not a bad deal, for excel, access, Word, Ourlook, PowerPoint Got it for my wife, as she is working on her BS at Florida Atlantic They will apparently have Windows Vista Ultimate for $65 at the same site on 9/8/2008 I think the deal ends at midnight, or I think you had to have registered for it, and gotten the email by midnight. Tony

17 years, 12 months

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ENIAC vs. ENIAC-on-a-Chip IC implementation

by aek＠bitsavers.org

> I'd still like to make up some web pages with a proper machine definition. Getting the 1946 documentation set would be a good start. CHM had the first volume, which had a partial transcription on the chip web site which I've scanned and put up under http://bitsavers.org/pdf/univOfPennsylvania/eniac The University of Pennsylvania archives probably have at least one set of manuals.

17 years, 12 months

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vac tubes / was Re: Schematics of Atanasoff-Berry

by tshoppa＠wmata.com

Roy wrote: >On Wednesday 03 September 2008 23:21, bfranchuk at jetnet.ab.ca wrote: >> William Blair wrote: >> > Right now, my goal is to build just an astable multivibrator clocking a >> > 4-bit counter. To show the alternating state of the multivibrator, I'll >> > light the tube from below through the hole in the center of the socket >> > with a two-color LED and the states of the counter tubes will be >> > indicated by lighting them from below with a red or blue LED. I've got >> > the special effects visualized, but that's the really easy part. >> >> Would not a green & red Ne-2 would fit the mood better. >> If you have the HV why not go nixe tube? > Given 4-bit binary, how many more tubes do you think it'd take to do the > 1-of-10 decoding? No more tubes, if you're clever enough! Look at the HP AC-4 schematics and manuals; they are very very clever, and I believe that this decoding-with-neon- logic scheme predates HP. Many other 4-tube decimal counter modules from other companies (I have a buttload of Berkeley Nucleonics ones) use the same principle with very slight variations. Using green and red NE-2's is probably out; they have different threshold voltages, although with some good characterization you could probably do it. Not only do I have 40-year-old modules that do this stuff, I've also built it with 6SN7's and modeled it with SPICE. For lowish speed counters (<100kHz) the tolerances do not have to be tight. Requisite AC-4 references: http://www.hparchive.com/Manuals/HP-AC-4A-4B-Manual.pdf http://www.prc68.com/I/HPac4a.shtml Patents named in AC-4 documents, find them at http://www.google.com/patents/ 2,404,047 (1946) 2,410,156 (1946) 2,521,788 (1950) I believe this is the first place where I see the neon decoding scheme 2,538,122 (1951) 2,762,915 (1956) Tim.

17 years, 12 months

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Free Linux and OpenOffice - even if your email address doesn't

by tonym＠compusource.net

>-----Original Message----- >From: David Griffith dgriffi at cs.csubak.edu >Sent 8/31/2008 6:38:15 PM >To: General Discussion: On-Topic and Off-Topic Posts cctalk at classiccmp.org >Subject: Re: Free Linux and OpenOffice - even if your email address doesn't > >I just chucked out a bunch of Linux CDs from 1993/1994... > >-- >David Griffith I'm probably going to have to do the same thing... I have multitudes of trans-ameritech cd's, not to mention super-old versions of RH, TurboLinux, OpenLinux... Man - are we packrats, or what? Tony

17 years, 12 months

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Slightly OT: SR-52 Service manual

by quapla＠xs4all.nl

Try 'http://www.ti59.com'. Ed > Rik Bos wrote: >> I'm bussy restoring a Ti SR-52 and having some trouble with the card >> reader > [...] >> So I'm searching for a schematic diagram or service manual. > > I had a paper copy around 1979, which wasn't too hard to get at the > time. IIRC, I just called TI's Lubbock, TX office and asked for a copy, > and they sent it to me. I doubt that they have them any more, but if > they were easily obtained (unlike HP calculator service manuals), there > are probably people out there that still have copies. > > The TI-58/59 service manual is more commonly available. It's possible > that the card reader is similar enough for that manual to be useful to > you. > > Eric >

17 years, 12 months

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Free kit in London, UK: 5.25" FH SCSI drives, PC-AT case etc.

by lproven＠gmail.com

I am trying to have a clear-out! Anyone need some 5.25" full-size full-height SCSI drives? I have an old 486 Netware server with 3 or 4 in - 1 x 9GB, 2 or 3 ~3GB, I think. There is also a stand-alone JBOD disk cabinet with 7 x ~1.5GB disks + 4 Toshiba caddy-loading CD-ROM drives; all are accessed across 2 x SCSI2 HD connectors on captive drop cables. There is also an original IBM PC-AT case, in IBM tower adaptor, with the original PSU and 3.5" FDD fitted. The motherboard is an MSI thing with a Pentium 133MHz and 128MB of RAM. It also has an Adaptec SCSI card with a Panasonic PD optical drive/CD reader. Finally there is an Elonex WS466 network workstation. This is an ultra-low-profile 486 network workstation (2"*10"*10", 4cm*27cm*27cm). I think it's a 486DX2/66. 2xRS232, 1xParallel, 1xSVGA, 1x10base-T. No internal expansion, no optical drive bay - it's too small. Happy to ship anywhere if you pay the postage. -- Liam Proven ? Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AOL/AIM/iChat: liamproven at aol.com ? MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk ? Skype: liamproven ? ICQ: 73187508

17 years, 12 months

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Assist finding EOL / Disc IC socket

by tonym＠compusource.net

If anyone has access to companies that have obsolete electronics and IC parts, I need some Molex 50-39-5288 28-pin IC Carrier, I'd take a few hundred, up to 1000, price dependant. Molex stopped making these about 2004, I think the guy said, and no longer makes IC sockets. I've been going through a few of the online places, but no luck yet. Hopefully someone has some contacts to ask... Many thanks! Tony

17 years, 12 months

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VCF East 5.0 schedule and more details posted

by evan＠snarc.net

Hi all -- More details are posted at http://www.vintage.org/2008/east/. Lectures will be both days from 10:30 AM to (about) 1:30 PM. Saturday, the exhibit hall will be open from (about) 1:30 PM until 6 PM. Sunday it closes at 4:30 PM. A few more exhibits will be posted in the next few days, so keep checking back! - Evan

17 years, 12 months

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Basic Principles of Vacuum Tube Logic Circuits

by wbblair3＠yahoo.com

After a _lot_ of downloading and reading, I've compiled excerpts from the best tube logic theory technical documents I've found on Bitsavers and uploaded it as a merged document here: http://www.scribd.com/doc/5484436/Basic-Principles-of-Vacuum-Tube-Logic-Cir… I've included two pages on the IBM 650's capacitor memory just because the concept is so cool to me: a tube written, refreshed and read array of 500pF caps. I wish I could find a more detailed description of it. If anyone knows of other documents on Bitsavers or elsewhere that contain quality stuff on the tubular logic topic, please let me know and I'll add excerpts from them.

17 years, 12 months

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CDC/VAX tapes and drives

by ekklein＠pacbell.net

Got this in the mail but the tape systems aren?t of interest to me: --- Found your name on a website related to antique computers and components.??There are some vintage items at our company that we will be discarding when we move to a new location so I am contacting you to see if you have any interest.? We have reels of tapes and tape drives that can read tapes written on VAX and CDC systems.? We also have cabinets for hanging reels of tapes.? There is other stuff around too like old PC systems and software that we are just beginning to go through.? So let me know what you are interested in.? Also if you are not interested in the tapes or tape drives do you know anyone who is?? I'd rather give them to someone who wants them then to send them to the recycler. --- If you are interested please drop me a line and I?ll forward the contact info. ----- Erik Klein www.vintage-computer.com www.vintage-computer.com/vcforum - The Vintage Computer Forums marketplace.vintage-computer.com - The Vintage Computer and Gaming Marketplace

17 years, 12 months

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vac tubes / was Re: Schematics of Atanasoff-Berry

by wbblair3＠yahoo.com

Brent Hilpert wrote: > Joking aside, and I don't want to speak for William, > but I think at this point his project is in the > experimental stage .. whatever is at hand will do. You are right on the money. To be done with what I have on hand as much as possible since my success in this effort is far from guaranteed. Right now, we're not talking about anything more ambitious that a demo circuit using five tubes.

17 years, 12 months

1
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vac tubes / was Re: Schematics of Atanasoff-Berry

by wbblair3＠yahoo.com

> > Can't get much cheaper than effectively free for a > well regulated, high current DC power supply using a > modified PC power supply that isn't otherwise being > used. Plus, the idea of using tubes with 5V filaments > instead of 6.3/12.6V reduces the competition with typical > audio tube customers and makes the use of a high-current > 5VDC supply possible. > > For a few bucks, you could get a 5 Volt transformer with a > decent > current rating of 10 Amps, and not have to worry about the > number of > tubes you need to feed for a while. > > Filament transformers come in many voltages other than 6.3. I'm just working with what I have on hand. And I plan to use the PC power supply for other purposes, too.

17 years, 12 months

1
0
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infocom on other systems

by dgriffi＠cs.csubak.edu

Yesterday I unearthed some unopened Infocom games which will go on Ebay tomorrow afternoon. What caught my eye was a blurb indicating that games were available for the DECmate, DEC Rainbow, HP 150 and 110, and TI Professional. I'm especially interested in the DECmate version. Does anyone know anything more about these obscure ports of Infocom games? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

17 years, 12 months

17
33
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Paper tapes+rubber bands+30 yrs = mess

by james＠jdfogg.com

> I have a large collection of paper tapes that came with a > vintage Altair 680b and Teletype model 33 that I > inherited. I've restored the machines and have started > looking at the tapes. Unfortunately, I have discovered > that the rubber bands that were used to keep the tapes > rolled up have all dissolved into a yucky gooey mess that > is in most cases, stuck to the tapes. I don't have experience with paper tape. From the description it sounds like the oils dissolved the rubber by acting as a solvent to the natural oils in rubber. If this is the case, you could try something that can act as a solvent to the oils, such as acetone. You'll have to test against a sample tape, and don't assume that the acetone or other solvent wont remain in the tape and cause damage in the future. You should try to find a way to copy new paper tapes or transfer the data to some other medium. How much data is in the exposed tape that was damaged? Don't they have leaders with no data on them? Did the damage extend into the layers beneath the surface? I'm assuming that the tapes were rolled up and only the first few inches were damaged.

17 years, 12 months

2
1
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Super Serial Card...

by geneb＠deltasoft.com

I'm in need of a working, complete, Super Serial Card for an Apple IIe that I recently got. If you've got one that you'd like to part with, please contact me off list. I'm also looking for the dip switch settings and 10 pin header pinout for an Epic Technology "2400 Classic II" modem card. It appears to be an internal Smartmodem clone glued to a SSC clone, but I need docs on it.:) Thanks All! g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind.

17 years, 12 months

1
0
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HOWTO: Connecting an IBM LPFK to a USB port

by classiccmp＠philpem.me.uk

Hi guys, I've just finished testing my fully assembled (i.e. intended-to-be-permanent) LPFK-to-USB cable. It uses an FTDI TTL-232R USB-to-RS232/TTL converter, a MAX232 level translator, five 0.1uF 0805-size surface-mount ceramic capacitors, a BC547 transistor (well, actually the SMD variant, the BC857), a 4k7 0805 SMD resistor, an 8-pin Mini-DIN plug... and a plastic Maxim/Dallas Semiconductor antistatic box. I did end up using a bit of copper tape and superglue as well (to hold the 4k7 and BC857 on the body of the MAX232)... First problem: if the connector is assembled as recommended by the manufacturer, it's too big to fit in the LPFK's rather small connector port. The solution to this is simple -- ditch the thick (2mm on my connector) rubberised outer cover and use heatshrink instead. As long as you're quick, the plastic inner support won't melt, but assembly is pretty much one-way. It's not easy to assemble, fairly easy to cut apart again, but $DEITY help you when you need to put it back together again. Six wires to desolder, *then* you can put the heatshrink back on. Thankfully properly-soldered mini-DIN connectors are usually quite reliable... Next problem is that the LPFK speaks 12V RS232, while the TTL-232R uses TTL-form inverted RS232. Another easy solution -- put a MAX232 between the LPFK and the TTL-232R to bump the levels. I also added a transistor and a 4k7 resistor to toggle the LPFK's reset line from the serial port's RTS output. That means that when the PC is idle, the LPFK is held in reset, and when the port is open the LPFK is released from reset. Advantage being that if you manage to crash the LPFK, you just need to toggle RTS and wait a few seconds for the LPFK to restart. It does tend to blink a few times when the USB drivers pick up the cable, but only on Windows. Maybe it's the software for my mobile phone trying to pick up a serial cable (despite the fact my phone connects over USB.. natch). I couldn't find any small plastic cases in my junk box, so I used an empty Maxim/Dallas antistatic plastic box. As in, the little clear plastic boxes that hold the parts they send out as free samples. These are small, relatively tough (though a bit thin) and ideal for small projects. Speaking frankly, I'd much rather have unclipped a ferrite EMI bead from a USB cable and used that, but the only ones I could find were moulded onto the cable. Shame, they were a perfect fit. Lastly, I had to reprogram the TTL-232's descriptor table so it claimed the full 500mA of current from the PC. Unplugging the cable from the LPFK will allow the TTL-232 (and MAX232) to start up and enumerate, then you can use FTDI's MProg tool to reprogram the power consumption descriptor (and the description strings too, if you like). Some USB chipsets / motherboards / etc. are more fussy about power consumption than others. 99.5% of the machines I've used seem to ignore the USB port's power consumption unless you short it out, in which case the machine tends to reboot in short order... I've also got an LPFK driver library that works with the USB cable, but should also work with a standard serial cable. You can grab the source code from <http://hg.philpem.me.uk/liblpfk/>, and it should work on any OS that supports POSIX serial communications (that would be Linux, OSX, the BSDs and most of the other Unices, and possibly QNX and Slowlaris - sorry, Solaris - as well). Porting to Win32 is left as an exercise to the reader. The library can do LED setting in both cached and uncached modes (translation: you can change one LED's state and have the LPFK update immediately, or change a dozen at the same time). Key processing is done with an lpfk_read() function that returns LPFK_E_NO_KEY if no keys have been pressed recently, or alternatively returns the first key code in the serial FIFO buffer. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

17 years, 12 months

3
3
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Tube machine restoration (was Schematics of Atanasoff-Berry Computer logic circuits?)

by aek＠bitsavers.org

>> Does the CHM have a complete 'large'-category tube system that could >> conceivably be made to run again? > > Al? Not really. Johnniac, WISC, and the G15 are the closest to being complete but none would be a restoration candidate since current CHM restoration guidelines state that a restoration would not occur if a machine is one of a kind, or there is only one in the collection (G15).

17 years, 12 months

4
4
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Slightly OT: SR-52 Service manual

by hp-fix＠xs4all.nl

_____ I'm bussy restoring a Ti SR-52 and having some trouble with the card reader electronics. I't's reading prerecorded cards fine, but is not writing data on the cards . And it does not transport the card fully through the card reader, I have to pull the card the last few millimeters before it gets free from the capstand. So I'm searching for a schematic diagram or service manual. -Rik

17 years, 12 months

2
2
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sears wire recorder

by cbritt＠cfl.rr.com

Hi Am attempting to visit your on line page and contact you thru it however I had trouble connecting to you in there so am writing thru my email. I have a Sears wire recorder (model 101.771 and needs a small open wire type spring that pushes an actuator when u go from play to rewind. If you have any idea where i might locate such a part I will get a picture of the spring and provide model ect if that would help. ANy information asto where I might buy a spring for the recorder would be much appreciated Thank You Best Regards, Chuck B cnritt at cfl.rr.com

17 years, 12 months

1
0
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Computer Automation library floppy images

by aek＠bitsavers.org

There are now about 400 disks from Computer Automation's program library up at http://bitsavers.org/bits/ComputerAutomation/8_imd. They are in imagedisk format, and are all single sided, single density. There are also some 5" floppies, which i'll work on reading this week. Getting all of the paper directories scanned will take a while. Most of the software is for the LSI-4. CHM has very little on this machine, so hardware and software docs would be good to find. Lars has some material on his site. http://www.sdu.se/computer-automation-museum/ Hopefully this will prompt his donors to find the other LSI-4 docs that they have in storage.

17 years, 12 months

2
2
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ENIAC vs. ENIAC-on-a-Chip IC implementation

by gerhard.kreuzer＠liftoff.at

Hi William, thanks a lot. I found the book noted at the page of Jan van der Spiegeln, who did the project years ago. He tell me the ISBN, but I will see, whats Google offer me. Thanks a lot Gerhard

17 years, 12 months

2
1
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Need cc:Mail Automatic Directory Exchange Release 2 ($$$)

by sellam＠vintagetech.com

I have a new bounty out. I am looking for cc:Mail Automatic Directory Exchange Release 2, specifically I need the Administrator's Guide. If you have this then please contact me for details. 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 ]

17 years, 12 months

1
0
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vac tubes / was Re: Schematics of Atanasoff-Berry

by wbblair3＠yahoo.com

Brent Hilpert wrote: > It has occurred to me that if one were setting out to build > a (small?) tube > computer today for fun, to look into selecting the primary > tube(s) from that > class; the question being if one would do any better than > just using > duo-triodes, which are in higher demand. That's exactly what I'm doing. The advantage of going with tubes currently used for audio is that they are still in production, mostly in China and Russia. The disadvantage is that they cost quite a bit more. For small projects like mine, I have no worries about the availability of tubes that are no longer produced. For that matter, I suspect that even very large projects wouldn't have problems with tube availability considering how many of these out of production tubes are apparently still around. For instance, I can buy OOP 5BK7A dual triodes for US$0.78 each (I have ten on hand) or OOP 4BS8 dual triodes (to be purchased on my next order) for $0.38 each. The 5BK7A has a 4.7V heater and the 4BS8 a 4.5V heater. Either of these would work fine at 5V being outside of the typical filament voltage +/-10% rating only very slightly in the case of the 4BS8. For a power supply, I plan to use a modified PC power supply. I have three used, unmodified ones just sitting around from previous PC builds: http://web2.murraystate.edu/andy.batts/ps/powersupply.htm The +12V will be used for the B+ and the +5V for the filaments. Both +12V and -12V could be used for the plate voltage giving a total of 24V as long as the project is small enough to not exceed the 500mA rating (in my case) of the PC power supply -12V output. And, of course, the modified PC power supply will be useful for other projects, too. I've got several homemade variable DC supplies, but they are all limited to 1.5A output which would be exceeded with just three 5BK7A filaments @ 600mA each.

17 years, 12 months

5
5
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WANTED: AIM-65 PASCAL and/or PL/65 ROMs

by dm561＠torfree.net

>Date: Tue, 2 Sep 2008 14:22:52 -0700 (PDT) >From: steven stengel <tosteve at yahoo.com> >Subject: WANTED: AIM-65 PASCAL and/or PL/65 ROMs >Please let me know if anyone can send me the AIM-65 PASCAL and/or PL/65 ROMs. >Either originals or copies. >Thanks- >Steve. -------------------------- Didn't know there's a PASCAL, but PL/65, FORTH etc. docs and binaries at: http://highgate.comm.sfu.ca/~rcini/systems.htm m

17 years, 12 months

1
0
0 0

IBM 5150 rom: 5700051 at U33 - anyone have this?

by jzg22＠drexel.edu

I'm looking for a specific rom for an IBM 5150 machine: rom 5700051 at location U33. This rom was only used on the very earliest (16-64k MB) 5150 machines. I know Rich Cini has a disassembly of it on his site: http://highgate.comm.sfu.ca/~rcini/classiccmp/files/PCBios.ASM but does anyone have the original binary image? It can easily be dumped from a working 5150 using a dos boot diskette and the instructions at http://mess.toseciso.org/dumping:dump_bios_using_debug/ The actual chip is an MK36xxx rom, which requires a pulse train on /CE in order to read properly. Some eprom programmers will not read these correctly at all, the first byte will fill the entire rom image because the address is never re-latched. (MK36xxx roms will not read properly without a pulse train of HIGH LOW <read data bus then set next address> HIGH LOW <read data bus then set next address>, etc. IBM loved to use these, for some reason, and only switched to real 2364/23256/2764/27256/etc on the ps/2 machines and the later ATs, and on certain expansion cards such as the Xebec hdd controller on the XT,which uses a 2764 for the z80 rom.) The chip can be read in an incompatible eprom programmer by sticking the chip in some solderless breadboard and wiring it to the rom socket in the following way: programmer A0 through an inverter(7404 will work fine) and connecting to rom /CE programmer A1 to rom A0 programmer A2 to rom A1 etc. Data lines connect directly. read the rom as a 27128, then toss the first(0x00), third(0x02), and every odd(0x0x where x is even) byte thereafter, and keep the rest. other than the /CE change, the mk36xxx is pinout compatible to a 2364, which has a different pinout than a 2764 or 27128 does: +--------------+ A7 |1 +--+ 24| Vcc A6 |2 23| A8 A5 |3 22| A9 A4 |4 21| A12 A3 |5 20| /CE A2 |6 2364 19| A10 A1 |7 18| A11 A0 |8 17| D7 D0 |9 16| D6 D1 |10 15| D5 D2 |11 14| D4 Vss |12 13| D3 +--------------+ P.S. does anyone have an IBM 5100 or other machine in the pre-PC 51xx series? I'm looking for info from those, too. Thanks! -- Jonathan Gevaryahu jgevaryahu(@t)hotmail(d0t)com jzg22(@t)drexel(d0t)edu

17 years, 12 months

2
1
0 0

Slightly OT: SR-52 Service manual

by rikbos＠xs4all.nl

I'm bussy restoring a Ti SR-52 and having some trouble with the card reader electronics. I't's reading prerecorded cards fine, but is not writing data on the cards . And it does not transport the card fully through the card reader, I have to pull the card the last few millimeters before it gets free from the capstand. So I'm searching for a schematic diagram or service manual. -Rik

17 years, 12 months

1
0
0 0

Insulator/shielding in DEC power supply

by oldcpu2＠rogerwilco.org

Ian King said: > I'm reconditioning some H7100A power supply units in a VAX-11/785, and > I've come across something I haven't seen before. I'm hoping one of you > has. :) > > This particular PSU was labeled 'Memory Power Supply' and has additional > regulator boards for a 15v rail. Slipped between those boards were two > sheets of what looked like heavy-duty paper. However, one had > delaminated, demonstrating that it is a sheet of thin copper sandwiched > between two paper-like layers. That suggests to me that this was intended > more for EMI shielding than electrical isolation. I did not see these sheets in > another PSU that also had a supplemental regulator. > > Does this sound familiar to anyone? TIA - Ian In my VAX 11/750[1], each of two power supplies (2.5v and 5v) also contain this 'heavy' paper separator between adjacent boards. I've noticed that this paper is pretty thick, not quite what you'd call cardstock, but getting close. In my case, I haven't noticed any de-laminating, so can't confirm the copper foil inside, however, I have commented to myself a time or two that each sheet just 'feels' heavy. If there really is foil inside, I don't know how much EMI suppression it would do, since there is no connection of ground or other way to bleed of any incident energy. Rather, I'd guess they probably make pretty good reflectors of EMI, instead. But what do I know, I'm hardly a hardware guy. - Jared [1] Was brainless when picked up almost a year ago, but I've since gathered a set of all of the CPU boards, memory and other necessaries. Just picked up a DEUNA, but still need the cab-kit for it. Fixed the faulty 5V power supply, but now the 2.5V PS is goofy; presently working on that. At this rate, I'm now hoping to fire the whole system up for the first time, sometime before, oh, I don't know, maybe before Christmas?! :)

17 years, 12 months

2
1
0 0

vac tubes / was Re: Schematics of Atanasoff-Berry > Computer

by wbblair3＠yahoo.com

Gordon JC Pearce wrote: > > Did all the tubes disappear or something? LOTS AND > LOTS of tubes were > > They're still being made, mostly in the former USSR. > After Mullard > stopped producing valves in the 1980s, a company in the > USSR bought the > whole lot up and shipped it across. If you buy a Sovtek > ECC83 or EL34, > it's exactly like an old Mullard one. Here's the list of modern manufacturers: http://en.wikipedia.org/wiki/Vacuum_tube#Modern_manufacturers

17 years, 12 months

1
0
0 0

ENIAC vs. ENIAC-on-a-Chip IC implementation

by wbblair3＠yahoo.com

gerhard.kreuzer at liftoff.at wrote: > I think about a FPGA-version of ENIAC, so ist relativly > easy to get the hands on a replica. > > Is there goood documentation available? Is the ENIAC on > a chip project online, that meens, all the docs? The project is generally described here: http://www.ese.upenn.edu/~jan/eniacproj.html But the best technical description of it by far that I've found is in the book, "The First Computers--History and Architectures," MIT Press, eds. R. Rojas, 2000. The relevant pages are online with Google Books here, starting on p121 of the book: http://books.google.com/books?id=nDWPW9uwZPAC&dq=The+First+Computers--Histo… The 207 page ENIAC patent is here: http://www.scribd.com/doc/4960983/ENIAC-Patent-US3120606

17 years, 12 months

1
0
0 0

Anyone want a SS5?

by alanp＠snowmoose.com

As previously mentioned, I have a Sun SparcStation 5 that I rescued from my uncle. I have gone through it and here are the details: SparcStation 5 32 Meg memory 2G disk Solaris 2.6 installed Sun 5C keyboard Sun Compact 1 (ball, not optical, three-button) mouse 15" Color Monitor (Model 447L) I booted it, ran OPB diagnostics, installed Solaris 2.6 and everything seems to work fine. Located in the Seattle, WA area. Price: Make offer alan

17 years, 12 months

1
0
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Mullard valves. Was Re: Schematics of Atanasoff-Berry Computer logic circuits?

by roger.holmes＠microspot.co.uk

On 2 Sep, 2008, at 20:22, cctalk-request at classiccmp.org wrote: > > Message: 28 > Date: Tue, 02 Sep 2008 20:11:25 +0100 > From: Gordon JC Pearce <gordonjcp at gjcp.net> > Dave McGuire wrote: >> On Sep 2, 2008, at 11:47 AM, bfranchuk at jetnet.ab.ca wrote: >>>> Us amp builders >>>> love them for their second-harmonicy crunch... >>>> >>> Still with out the guitar amp people, I don't think any kind of >>> valves >>> would be around for people like myself to play music through. >> >> Did all the tubes disappear or something? LOTS AND LOTS of tubes >> were > > They're still being made, mostly in the former USSR. After Mullard > stopped producing valves in the 1980s, a company in the USSR bought > the > whole lot up and shipped it across. If you buy a Sovtek ECC83 or > EL34, > it's exactly like an old Mullard one. I think they stopped production earlier than that, though they were probably selling their stock for some time after. Next to the Marconi- Elliott works at Rochester airport was (IIRC) a Mullard thermionic valve factory. Not to be confused with the Fisher fluid valve factory at the other side of the Elliott works. Around 1975/6 there was a period when due to car problems I used to wait near the Mullard works for my regular lift home and every night there was another batch of valve testing benches standing outside waiting to be collected. It went on for months, probably carried on after I got my car sorted out.

17 years, 12 months

1
0
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WANTED: AIM-65 PASCAL and/or PL/65 ROMs

by tosteve＠yahoo.com

Please let me know if anyone can send me the AIM-65 PASCAL and/or PL/65 ROMs. Either originals or copies. Thanks- Steve.

17 years, 12 months

1
0
0 0

DataDock 7000

by rups1967＠googlemail.com

Dear All, I am restoring a Data Dock 7000 that was languishing neglected in a dusty corner and I wondered if anyone has any information regarding these "wee beasties". Regards, Rupert.

17 years, 12 months

1
0
0 0

Schematics of Atanasoff-Berry Computer logic circuits?

by wbblair3＠yahoo.com

> > A multi-stage direct coupled vacuum tube circuit.? Fun. > Yes, be prepared for some fun, in both senses of the word: it is fun to play > around with, but the implemention of tube logic can be problematic or > unreliable, at least in the way the ABC tried to implement both NAND and NOR > gates with resistive input circuitry. > > Atanasoff makes it sounds easy in his paper, but if one reads it closely > it's not quite so, at least as measured by modern standards where one comes > up with a gate design and then simply repeats it ad infinitum. After reviewing the ASM circuit on your web page, it became readily apparent to me that it would likely be a major challenge to fill in the blanks for those missing resistor values and end up with something that actually worked reliably. > The ABC reconstruction and the original required (at least some) hand-picked > resistors in the gate circuits. I bought the excellent book ?The First Computers ? History and Architectures? mainly because of its content on Konrad Zuse?s relay-based machines. However, in its included paper on the reproduction of the ABC, the authors state: ?In building add-subtract modules, we found the circuits very demanding of precise resistor values. We have evidence that Berry hand-selected resistors from bins until he found ones that worked, and we attempted the same tactic. In measuring the characteristics of 10% resistors, we discovered the distribution about the nominal value shown in Fig. 3. (It?s a graph of a bell curve between -10% and 10% with a big notch in the center of the curve). Apparently, the manufacturer had already segregated the resistors close to nominal value. Hence, we found it necessary to use 1% tolerance resistors.? So, here?s a 14 gate, multistage, direct coupled vacuum tube circuit that apparently requires various hand-selected values of 1% resistors to work properly. Whew!!! I think I?m going to start with something a great deal simpler, like a single flip flop or astable multivibrator using an inexpensive 9-pin miniature dual triode at low voltages to see if I can even get that to work. > Some of the issues: > > 1. Tubes can be insufficiently non-linear. Driving between saturation and cutoff >? can take a bit of swing and saturation is soft (curved). > > 2. Plate circuit impedance is high. If the difference between the plate circuit > impedance (lower better) and the grid circuit impedance (higher better) is > ? ? insufficient, then different fan-outs in the logic circuit (loading), and > ? ? varying tube/component characteristics, can pull the logic levels away from > ? ? the design targets and upset everything. > > Going to the low plate voltage is a nice idea from a practical view but I > wonder if it may compound issues of point 2 above. It will reduce the voltage > shift between the plate and grid circuits that needs to be accomplished, but it > may also reduce the voltage swing between the 0/1 logic levels. How it works > out in the balance will be interesting. Thanks for that info and it will be interesting indeed to see if this will work. I was surprised to find nothing on low voltage tube logic when there?s so much on the web about low-voltage tube audio circuits of all kinds. True, tube logic is a fairly esoteric subject with no usefulness beyond that of a novelty, but with all of the audio low voltage stuff, I?d expected some tube enthusiast somewhere to have already done something on the logic side just for the heck of it. > Straying completely away from technical issues, and I'm somewhat loath to > mention this, but the animosity engendered by the early-70s court battle > continues decades later. The somewhat nasty inter-personal battle > found it's way into the Amazon book reviews as recently as 2004. > Another bizarre twist in the ENIAC patent saga on the legal/social side. Yes, I saw that when I went to look at the Amazon entry for Burks' "The First Electronic Computer." Wow, it?s a long-time, knock-down feud for certain. Bill

17 years, 12 months

14
55
0 0

HP200LX, e-text and vertical reader

by feldman.r＠comcast.net

Vertical Reader (1.11, the file is VR100.zip) can be downloaded from the HPLX S.U.P.E.R. ftp site at http://super.hplx.net/anonftp/pub/. For my personal taste, I found the lines in VR too short, so I wrote a "Horizontal Reader". It's not as polished as VR, but I can send the program and Turbo C source code to anyone who would like it. There is still a moderately active mailing list for the HP 200LX. The link for information is http://eberl.com/HPLX. The old HPLX information center at http://super.hplx.net/ is still up, but most of its links are broken. If you need to get a 200LX fixed, go to http://www.palmtoppaper.com/store/asp/prodtype.asp?prodtype=27 (in the US; there are others in Europe who do HPLX repairs). Bob

17 years, 12 months

1
0
0 0

More stuff to go...

by mc＠media.mit.edu

> Date: Tue, 02 Sep 2008 18:04:13 +0200 > From: Pontus <pontus at update.uu.se> > Subject: Re: More stuff to go... > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> > > >> Three SGI Indigo 2's. These I will not ship, as they're too big/heavy >> to easily ship. One is an Impact (purple), one an Impact 10000 >> (purple) and one EXtreme (teal). $10 each >> > Oh man! Indigos for 10 bucks! I wished I lived closer :) (I'm in > sweden). I guess you should post in the nekochan forums if you don't get > rid of the machines. I could do it for you if you like. > > Regards, > Pontus. > As we say around here, "where there's a will, there's a way"... If you really want one of these SGI boxes, I recommend that you contact the seller (he is not me), and ask him if he is willing to drop off the computer at a nearby UPS Store. This chain is in the business of packaging items for shipping. They are not cheap, but it might solve your problem. However, UPS, FedEx, DHL, etc. are primarily in the business of shipping items that can be lifted by a single person. If the computer weighs more than about 100 lbs, then you would need to contact a freight expediting service or a moving company and make arrangements for palletizing, consolidation and surface transport. Good luck. --Tim

17 years, 12 months

1
0
0 0

Insulator/shielding in DEC power supply

by IanK＠vulcan.com

I'm reconditioning some H7100A power supply units in a VAX-11/785, and I've come across something I haven't seen before. I'm hoping one of you has. :) This particular PSU was labeled 'Memory Power Supply' and has additional regulator boards for a 15v rail. Slipped between those boards were two sheets of what looked like heavy-duty paper. However, one had delaminated, demonstrating that it is a sheet of thin copper sandwiched between two paper-like layers. That suggests to me that this was intended more for EMI shielding than electrical isolation. I did not see these sheets in another PSU that also had a supplemental regulator. Does this sound familiar to anyone? TIA - Ian UNIX is user friendly. It's just selective about who its friends are. Ian S. King, Vintage Systems Engineer Vulcan, Inc. http://www.pdpplanet.org

17 years, 12 months

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Epson QX10?

by sellam＠vintagetech.com

Check out this old Zebra video from the 1980s: http://www.youtube.com/watch?v=-Y4TQehFNnQ The on-topicness starts at about the 0:30 mark. Those are some killer looking terminals (can anyone identify them?), but the one that the one dude is using is, I'm pretty sure, an Epson QX-10. This is from the 1983-84 timeframe. -- 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 ]

17 years, 12 months

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MY REPLY - Re: HandyMan for Kaypro

by tonym＠compusource.net

-----Original Message----- >From: Roy J. Tellason rtellason at verizon.net >Sent 8/31/2008 10:33:32 PM >To: General Discussion: On-Topic and Off-Topic Posts cctalk at classiccmp.org >Subject: Re: MY REPLY - Re: HandyMan for Kaypro > >On Sunday 31 August 2008 18:23, FJGJR1 at aol.com wrote: > Tony, > > You want to check with "Sharkonwheels" who posts on > _www.vintage-computer.com_ (http://www.vintage-computer.com) . He is very > knowledgeable on Kaypros "after" 1983. > > > He uses and has info on Advent products. > > > I am more involved with the 1982 / 1983 versions and post under GADFRAN. > > My website _www.kayprosts.org_ (http://www.kayprosts.org) may give you > some other productive contacts to explore. > > He may also know of HandyMan. > > You may want to check just what version of K4 you have. Main large chips > on main board will help - e.g. U43 and U47, etc. > > He will be asking you about them and other aspects. > > He is very familiar with the K10's. > >I'm not sure of the dates on the stuff I have... > >And perhaps you could say anything pertinent about this eprom I seem to have >sitting on my desk here? Label says "Multi TurboRAM v4.4" with copyright >dates of 1985, 1988, and "Digtial Arts" on it. I *think* that's for a >Kaypro, but am not 100% sure of that. > >If it's of interest, I have some pretty complete service data on Kaypro 8-bit >stuff, including the schematics of multiple versions of the power supplies >used in them, though I'm not sure it was necessarily all of them. I >remember California DC (?), Astec, and I'm not recalling the others >offhand, but they're around someplace. _This_ stuff I don't want to sell, >but I might be persuaded to make some photocopies. :-) > > Thanks for the offer. For the most part, I think MOST necessary parts of the Kaypro service manuals are out there - 1484-d, -e, and -f versions. Can;t hurt to check against what you have, though. On the EPROM, never heard of THAT one, but I can hunt around in my Pro-Files magazines and see if any ads pop-up, and any info. I HAVE found ads for the HandyMan, but that's about all! If you have the ability, dump the EPROM, and I can take a peek. Is it a 24-pin, or 28-pin EPROM? Tony

17 years, 12 months

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govliq: 12 HP 7907A disk drives (Ogden, UT)

by legalize＠xmission.com

LOT (20) DISK DRIVES TO INCLUDE: (12) HP 7907A DISK DRIVE UNIT LR28576 (1) MEGA DRIVE ENTERPRISE 8 FIXED/ REMOVABLE DISK DRIVE UNIT (7) PANASONIC KXL-RW21A PORTABLE CD-R/ RW DRIVE FOR USB INTERFACE 6X WRITE/ 4X REWRITE SPEED <http://cgi.govliquidation.com/auction/view?auctionId=1903614&convertTo=USD> As before, if anyone wants these, I'm willing to pick them up from govliq and help you with packing and shipping. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 12 months

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Wanted: System V Release 4 (Intel) OS

by korpela＠ssl.berkeley.edu

> Hmmm....wasn't UnixWare on CD? We had fun with them, and called it Novix. I think they they used > the name Univel at some point, didn't they? After first acquiring USL? I've got Univel UnixWare 1.0 floppies with somewhere in my collection. Unfortunately they were not readable since they had been stored badly before I got them. (They were covered with mildew and what looked like spilled soda.) So no floppy images, unfortunately. :( I think we've got a 1999 era UnixWare 7 CD that we got from SCO somewhere around here. That was back before Caldera became the SCO's evil twin and tried to blackmail the world... Eric

17 years, 12 months

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Schematics of Atanasoff-Berry Computer logic circuits?

by wbblair3＠yahoo.com

steven.alan.canning at verizon.net: > If I had meant audiophiles I would have stated such. The "tweaks" > are the ones that can hear the nuances in an amplifier that cannot > be quantified because they don't exist. They describe an amplifier > as if it were a bottle of wine... Somehow they are never willing to > submit to a double-blind test to check their palette. Although this is way off-topic, I think that a lot of the "tube sound" claims may have to do with audio distortion. Here are some audio tests of a type of tube amp I built: http://www.ibiblio.org/tkan/audio/millett.html I saw these tests before building the amp. And since I have a significant hearing loss in both ears, I built the amp just to play with tubes, not for any audiophile reasons. If the people who can actually hear any difference claim to like tube amps over solid-state even if that difference is actually due to audio distortion, more power to them. On the topic of imagining audio differences that aren't actually there, I read the article referenced here way back in 1983. I was not surprised by the results: http://www.roger-russell.com/wire/wire.htm#reviewdares

17 years, 12 months

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ENIAC vs. ENIAC-on-a-Chip IC implementation

by gerhard.kreuzer＠liftoff.at

Hi, I think about a FPGA-version of ENIAC, so ist relativly easy to get the hands on a replica. Is there goood documentation available? Is the ENIAC on a chip project online, that meens, all the docs? Maybe sombody is interested too With best regards Gerhard

17 years, 12 months

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More stuff to go...

by pat＠computer-refuge.org

I've got a few more things to get rid of this week... I can probably ship this stuff as it's relatively small, but pickup is preferred (and will probably result in a discount :). Sun Sparcstation 2 w/ 12MB ram, and a Matrox CG-12 (370-1370) 3D graphics adapter. $20 for the machine + board or $15 for the graphics board alone. Box of Apple II software, including The Print Shop, companion, and two graphics disks, Flight Simulator, and a few other things. $10 for it all. Everything looks complete, but I haven't tried any of it out. The boxes are included, but a bit smooshed from being stored in a pile for a long time. $10 Dell DLT-1 tape drive, internal. This appeared to work, the one time I tried it. Includes a cleaning tape, and a few DLT-4 tape media. $10 Network Associates "Full Duplex Fast Ethernet Pod", part # NGC-1507601. It has 3 10/100 network jacks on the back (two are MII or RJ45, other is RJ45 only), a serial port, "Sync In" and "Sync Out", and a DIN-8 power connector. Don't have the power supply, but it claims to use 12V at 4.2A. Untested. $10 Three SGI Indigo 2's. These I will not ship, as they're too big/heavy to easily ship. One is an Impact (purple), one an Impact 10000 (purple) and one EXtreme (teal). $10 each I also have boxes upon boxes of (used and degaussed) DLT-4 media. I'd like to get about $1/tape for that. Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

17 years, 12 months

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ENIAC vs. ENIAC-on-a-Chip IC implementation

by wbblair3＠yahoo.com

schwepes at moog.netaxs.com wrote: > Why be surprised? The second group had a far higher state > of the art. > > > From the excellent book, "The First Computers - History and > > Architectures," an interesting comparison: I'm not at all "surprised" which is why I used the word "interesting." The comparison given in the book is a great illustration of just how far the technology has come. And, actually, it has come even quite a bit further since the ENIAC-on-a-Chip project was completed in 1997.

17 years, 12 months

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Sun Workshop 7.0 stuff available

by alanp＠snowmoose.com

My uncle, who develops compiler tools, insisted that, since I work for Sun, I take his 10-plus-year-old Sun h/w and s/w that has been sitting in his garage. Figuring that I might be able to find a better home for it, I agreed. I haven't gone through all of it yet. The most obvious thing in the boxes is media and documentation for Sun Workshop 7.0, C++ compiler 4.2 and Java Workshop. There is Solaris 2.5.1 and 2.6 media and documentation. I need to go through that to compare with what I already have. There is also a SparcStation 5, a 16" Sun monitor (the one with all of the display control buttons along the bottom), kbd, mouse, etc. However, I haven't had time to go through it and confirm that it works (though it should), what is in it as far as memory, disk, etc., and that it doesn't contain any of my uncle's business info. Once I do, I will probably sell it (for whatever you can get for a SS5 these days). If you have an interest in any of this stuff, let me know. I don't want it to get thrown out, but I don't really want it in my garage either. alan

17 years, 12 months

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Wanted: System V Release 4 (Intel) OS

by pitlog＠gmail.com

Greg, I've never used UnixWare, but if it is essentially SVR4.2 with some additions and comes with a development system, I'm happy to give it a try. Do you remember if it was on floppy or tape? Thanks very much for offering. Feel free to contact me off list to work out the details. Cheers, Tom -------------- Greg said --------------- Hi Tom, I'll have to check this week, but I believe I have a set for UnixWare 1.1 >from Novell. If you are not familiar with it, it is basically System V Version 4.2 with an IPX protocol added IIRC. Let me know if this will work for you.

17 years, 12 months

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Wanted: System V Release 4 (Intel) OS

by tonym＠compusource.net

>-----Original Message----- >From: The Pitlog pitlog at gmail.com >Sent 9/1/2008 9:05:37 AM >To: cctech at classiccmp.org >Subject: Wanted: System V Release 4 (Intel) OS > >Greg, > >I've never used UnixWare, but if it is essentially SVR4.2 with some >additions and comes with a development system, I'm happy to give it a >try. Do you remember if it was on floppy or tape? > >Thanks very much for offering. > >Feel free to contact me off list to work out the details. > >Cheers, >Tom > >-------------- Greg said --------------- >Hi Tom, > >I'll have to check this week, but I believe I have a set for UnixWare >1.1 >from Novell. If you are not familiar with it, it is basically System V >Version 4.2 with an IPX protocol added IIRC. Let me know if this will >work >for you. > > Hmmm....wasn't UnixWare on CD? We had fun with them, and called it Novix. I think they they used the name Univel at some point, didn't they? After first acquiring USL? I THINK I have a UnixWare 1.1 CD, but don't think I have a boot disk any more, and I'm not entirely sure if the CD itself is bootable, as this goes back to around 1995, doesn't it? Tony

17 years, 12 months

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