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

by cmcmanis＠mcmanis.com

A number of VAXen are available this week from www.auctionbdi.com. I gave them all of my "spares machines" which I cannot store and no one in the Bay Area wanted. The good news is that BDI will ship them to you pretty much anywhere in the country and the minimum bid is $25. The lot to look for has 3 MV3400's (in BA213 cases), one VAX 4000/300 (in a BA440 case) and one MicroVAX II in a pedastal BA23 case. I don't recall how complete they are, I do thing the 4000/300 is complete except for some DSSI plugs which I needed to bring my 3800 on line. Two of the 3400's have the front "door" (one says MicroVAX 3400, one says VAXServer 3400). If you've got a 3400 or 4000/300 there are plenty of parts to "enhance" your system. I believe the 4000/300 has 192MB of memory but can't swear to it) There is also a MicroVAX 3600 in a H9644 rack. This one I've never looked at in depth other than to note that it has a 4 SCSI drives and a tape but a gap where the SCSI controller had been. Given that it couldn't talk to the disks I pretty much ignored it. Finally there are some PC parts with a nice 17" NEC 5fg monitor (including the special NEC VGA cable). The monitor is nice but not an "Energy Saver" (it stays on as long as power is applied, no standby mode) Probably not of interest to this crowd but I thought I would mention it. --Chuck

22 years, 5 months

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Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>btw I can't seem to get www.mythtech.net... is it up? >it could just be the Nameserver I am stuck with. Its up now, it was up when I tried it. So maybe it was down and fixed itself, or maybe there was a failure elsewhere. Feel free to try again. -chris <http://www.mythtech.net>

22 years, 5 months

1
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Mercury delay line memory, revisited

by jfoust＠threedee.com

How to turn the Internet into volatile storage: http://isec.pl/papers/juggling_with_packets.txt - John

22 years, 5 months

1
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Betr.: Morely Electronics Teletext Adapter.

by e.huininga＠sozawe.groningen.nl

The users guide can be downloaded here: http://www.retrocomputing-world.com/biblio/computer/acorn/doc/MorleyTeletex… Furthermore you could check http://www.8bs.com/ and The BBC lives (http://www.bbc.nvg.org/ ). The latter should have an archive of ROMs, which almost certainly should have the ROM for your adapter. Cheers, Eelco >>> Tony Duell <ard(a)p850ug1.demon.co.uk> 10/05 7:24 >>> While looking for Econet bits, I found the above-mentioned unit (Morely Electronics Teletext Adapter). It's clearly a BBC periperal. On the back is Belling-Lee coaxial socket (standard TV aerial connector), and a piece of 6 way ribbon cable. This splits, 4 wires go to a 20 pin 2-row IDC header socket (presumably BBC User Port, the connections would then be +5V, Ground, and 2 lines for I2C SCL and SDA). The other 2 wires go to a plug to fit the BBC's power outlet socket, to get 12V. Inside there's a single PCB with a TV tuner module mounted off one edge. The PCB contains a TV IF strip, CITAC (Computer Interface for Tuning And Control) chip (to select the TV channel under computer control), and a standard Teletext chipset (SAA5240 based IIRC). Does anyone know anything about this unit, and more importantly, anyone know where I can get the software to use it (it's certainly not compatable with the Acorn Teletext unit). -tony

22 years, 5 months

1
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Want RL02s at VCF

by jpl15＠panix.com

I will be seeking two, maybe three DEC RL02 drives - at least one in good working order - whilst at VCF. [also one interconnect cable and spare terminator]. I have cash to pay for same (if at all 'reasonable'). I will have a 3/4 ton 4X4 full-size pickup truck, so travelling to your Secret Mountain Hide-out to get them will not pose a problem. Will be happy to go anywhere in the Bay Area over next weekend, or to modify my trek home, if it's roughly in the same direction (to Carson City, Nevada). Lemme know. And yes, I posted this on the VCF Bulletin Board, but forgot my damn password, and lost the message trying to find the Magic Formulae. So there. Cheers John

22 years, 5 months

1
0
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HP-85 consumables, part 2.

by netsurfer_x1＠fastmailbox.net

Anyone know how wide the thermal paper is for the HP-85's printer? Is it 3 & 1/8", or is it wider? -- David Vohs netsurfer_x1(a)fastmailbox.net -- http://www.fastmail.fm - A fast, anti-spam email service.

22 years, 5 months

3
2
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Fat (512K) Mac Revival?

by alhartman＠yahoo.com

It could be something as simple as a bad PRAM battery. There's a little door in the upper back, that has a battery in it. Open it and see if there's a battery in there. If it hasn't exploded... You probably can try replacing that as a start. Next would be the Power Supply/Analog board. But, yes... You should be able to buy a replacement cheaper than fixing that unit. Though, you might find buyers for the parts to help fund that. Regards, Al Hartman > From: "Andrew Strouse" <kittstr(a)access-4-free.com> > > The recent discussion about reviving a Mac SE/30 > reminded me that I have a "fat mac" in my closet > collecting dust. I found it after a yard sale a > few years ago. ( I like to go late and see what > finds I can get for nothing because the people just > want the stuff out of their house.) I remember > when I plugged it in, nothing happened. No sounds, > lights, bars, patterns, sad/happy macs, etc. Does > anyone have any suggestions of what to do to > attempt to get it running. Is it worth it? (I'd > like to play with it but could I find another one > that works for less than it will take to fix?) > It came with a large box of disks, and external > drive, mouse and keyboard, so it seemed like a > complete system, except that it doesn't work. > > Thanks in advance. > > Andrew Strouse >( kittstr(a)access-4-free.com ) __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com

22 years, 5 months

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Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>OOps I already sent it onlist... :^) Yeah, I realized that after I hit send on the message asking for it off list. Oh well, at least I have it. I'll get a set of disks out to you tomorrow (Monday). -chris <http://www.mythtech.net>

22 years, 5 months

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Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>I don't have any machine that can write these. > >If anyone can send me just an 800K floppy with the Mac OS6 or OS7 >cd rom drive that'l work too. I have a CD with OS7 (probably) on it. > >I want to get a MAC SE working again. I have scsi CDrom drive and >apples software cdrom. If the SE has 4 MB of ram, you can connect an your SCSI CD ROM drive to the SCSI port on the back, and boot from your OS 7 CD (assuming it is an Apple OS 7 installer and thus a bootable CD). To do so put the CD in the drive, then turn on the Mac and hold the Command-Option-Shift-Delete to force the SE to boot from the external drive. If you can't get that working, let me know, I'll send you a system 6 install set on 800K disks. System 7 doesn't fit on 800K disks so that's right out. Unless you double check that you need 800K disks. Later Mac SE models had 1.4 drives in them (if the Mac is labeled as Mac SE SuperDrive or Mac SE FDHD then it can use 1.4 disks) -chris <http://www.mythtech.net>

22 years, 5 months

3
3
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HP-85 consumerables

by john_a_s2003＠hotmail.com

Hi, I read the earlier messages about DC100A v DC1000 tapes. I was given a DC1000 tape to try and sadly it didn't work in my HP-85. I found the following page which implies the DC1000 requires a stronger magnetic field than DC100A. So it's a bit like typing to use HD floppies in a DD drive. http://www.cybergenetic.ca/ebook/wrh13.htm (BTW these tapes are 0.15" not one eight of an inch). The following firm advertise DC100A, but I haven't bought any from them so don't know if they have any stock: http://www.athana.com/html/minicart.html HTH, John

22 years, 5 months

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Help! need 400k/800k Mac os 6 or 7 diskettes!

by rhudson＠cnonline.net

Hey anyone? I don't have any machine that can write these. If anyone can send me just an 800K floppy with the Mac OS6 or OS7 cd rom drive that'l work too. I have a CD with OS7 (probably) on it. I want to get a MAC SE working again. I have scsi CDrom drive and apples software cdrom. Thanks! ron.

22 years, 5 months

1
0
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Free TRS-80 Model III

by CCTalk＠catcorner.org

Free TRS-80 Model III. All you have to do is come to Northwest New Jersey to pick it up. It has two disk drives. No sftware. I don't know if it works, but at this price you can't beat it. No trades needed, no cash, just some time. Kelly

22 years, 5 months

1
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64 PIN PLCC Socket

by that1address＠hotmail.com

Joe, I saw your posting on classiccmp.org for the 64 pin PLCC socket. We're doing a project involving a PHILLIPS SAA7111A video decoder chip which is 14x14mm size and has 64 pins but have had a difficult time finding a ZIF socket that's compatible with the chip for PCB implementation. I was wondering if you still have the Textool 64 pin PLCC ZIF socket and how much you'd be willing to sell it for or if you don't have it any longer, where could I find a zif socket for the chip we're using. Thanks... Greg Posting: http://www.classiccmp.org/pipermail/cctech/2003-May/014414.html _________________________________________________________________ High-speed Internet access as low as $29.95/month (depending on the local service providers in your area). Click here. https://broadband.msn.com

22 years, 5 months

1
0
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Morely Electronics Teletext Adapter.

by ard＠p850ug1.demon.co.uk

A non-text attachment was scrubbed... Name: not available Type: text Size: 953 bytes Desc: not available Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20031005/940a9403/at…

22 years, 5 months

1
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Acorn Econet

by ard＠p850ug1.demon.co.uk

A non-text attachment was scrubbed... Name: not available Type: text Size: 1365 bytes Desc: not available Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20031005/d594f119/at…

22 years, 5 months

1
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Available (NL) : Apple Mac shtuff

by waltje＠pdp11.nl

Hiyas, One of my customers finally saw The Light, and will now allow me to free up some of the storage space we have there. Aside from me being quite busy chucking stuff out into the dumpster, there's also a bunch of Apple thingies from their DTP department that can now be dumped. Obviously, I will not get caught playing with fruity "computers" during *my* lifetime, soo.. available are: - Mac II SE - Mac IIcx - Mac something (couldnt read; too dark there) I also know there are several Powermac (what? can we eat that?) boxes up that shelf, just couldnt be bothered climbing up there in the dark, any more details will have to wait till later, when I first grab a lite 'fore going up there. Since shipping fruit internationally can be quite expensive (gotta keep it cool 'n stuff) we'd prefer to have it picked up by local people (meaning, Dutchies) or people silly enough to drive a LONG time for a bag of this fruit.. Cheers, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA

22 years, 5 months

1
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HP-85 consumables.

by netsurfer_x1＠fastmailbox.net

Hi all! I'll be getting an HP-85 before the month is out & I was wondering where I could find a source for consumables (tape cartridges & thermal paper specifically) for this machine. Any info would be more than helpful. -- David Vohs netsurfer_x1(a)fastmailbox.net -- http://www.fastmail.fm - Choose from over 50 domains or use your own

22 years, 5 months

10
15
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Tic Tac Toe Game on Minivac 601

by RKessell＠aol.com

Tony.... This must be your lucky day. I saw your message on the internet. The tic tac toe game is in my Minivac 601 Manual. If you e-mail me your fax number I will send it to you. The copyright on the Manual is 1961 by Scientific Development Corporation, Watertown Mass. Hope this is what you are looking for. Regards, Richard

22 years, 5 months

1
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9 track magnetic tape

by bfranchuk＠jetnet.ab.ca

Found while surfing, 9 track tape for sale. http://www.tinaja.com/bargains/sbmisc.asp

22 years, 5 months

3
2
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HP 7906 drive lives again & stuff

by jwest＠classiccmp.org

After suffering a head crash on my "new" 7906, I decided I REALLY should have taken the time to clean the filter and the blower squirrel cage and air ducts better before using it. That was done, then the drive wouldn't seek past load point. So I swapped all the cards in the drive card cage with a "spares set" and now the drive is working wonderfully again, passing all diags. It is SO nice to not rely on a single 7900 drive anymore! Word to the wise - lesson learned - never skimp on dissassembly/cleanup of an old style 14" drive. Take the time to get every last piece of dust & debris out! Over the next few weeks I will be cleaning, refurbing, and testing all the other 7906 drives I have. Once I get all working that can be made to work... I will have some known working 7906 drives available for trade, as well as some 13037 controller boxes. Might not have spares of the 13037 pca that goes in the host though. If anyone is interested, let me know. Keep in mind these drives are somewhere in the neighborhood of 200 pounds each. I may get my 7905's working too but not sure I want to give those up just yet. Also - the only way I found to clean the squirrel cage blower was to take it out and clean each fan blade by hand and with a toothbrush. The very fine dust that makes it past the secondary filter cakes on these blades and is very hard to scrub off - it's like concrete. Does anyone have any ideas here? I was thinking of soaking the blower in something to loosen the dirt, but it's unfinished metal and might rust. Any thoughts? Regards, Jay West --- [This E-mail scanned for viruses by Declude Virus]

22 years, 5 months

5
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Strange Qbus cards: Data Systems Design and Marconi

by TRASH3＠splab.cas.neu.edu

The DSD 880 Qbus subsystem used two different cards, the 8832 and the 8836. The connector near the handle is 26 pins. For the 8836, the 16Mhz crystal is in location G9, with the model number of the board on the edge above that, for instance 808836-05 rev K. There are socketed 24 pin dips in row e, and headers for programming in D4 and F5. There isn't really any special software for basic use, but if you want the double sided use of the floppies, then you have to either use their drivers, or patch your own. The same goes for utilizing more than the 2-RL02 emulation feature, you have to patch for more logical units. The board has a bootstrap for either the floppy or the hard drive. I could look up what is in the 8832, but it is probably pretty close. Also, the dual height board for the floppy-only DSD440 subsystem is similar, but I have the board for that at work. I still use a couple of the DSD880s. The system came with a diagnostic floppy which complemented the front panel, but I haven't used it for a long time. We used to use the DSD880 along with a VT103 and 11/23 in test equipment that a company I previously worked for sold. Hope that helps, let me know if you (or somebody else) needs/wants more info on the 880 series. Joe Heck, K1LBG

22 years, 5 months

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9 track magnetic tape

by cb＠mythtech.net

> Don should stick to writing 'Cookbooks' etc... $7 for a 7" reel??? I >don't think so... O, I see: $50 for ten - plus shipping from Arizona. And to think, I'm asking $10 OBO for 24 of them ($18.00 counting shipping) -chris <http://www.mythtech.net>

22 years, 5 months

1
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HP 7906 drive lives again & stuff

by freddyboomboom＠comcast.net

Sorry I don't have any clue to help you on the squirrel cage. But the one thing I wanted to mention to you was to disconnect the solenoid that controls the heads moving out when testing the disk packs. We had a case where a bunch of disk packs were stored in a hot muggy environment for about 9 months or so, and warped on us. When spun up, the disk will make quite the shrill noise indicating it's warped, and if you don't disconnect the solenoid, the drive will crash all over again. I haven't worked on one of those drives in about 10 years... TTFN Andrew

22 years, 5 months

1
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Ref needed for PCjr ROM cartridge Kit

by nampcjr＠yahoo.com

I obtained a nice supply of PCjr ROM cartridge Kits from Integrity Software. The carts were in a box in the corner of their warehouse, and was all they had left of their past enterprise with them. I looked in a Nov 1988 issue of the Eugene PCjr Club Newsletter and there is mention of the cartridge being used for backup. One thing missing from my shipment, though, were the docs needed for the soldering to change the settings on the physical PCB after putting on an EPROM. The title of the doc was "PCjr ROM Cartridge Kit Technical Reference Manual" and had a file name of RC-TECH.REF . If anyone happens to have this, write reply so I can get these puppies working!! Much appreciation! Brian --------------------------------- Do you Yahoo!? The New Yahoo! Shopping - with improved product search

22 years, 5 months

1
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Need 307.2 kHz crystals

by swtpc6800＠comcast.net

I am looking for a supply of 307.2 kHz crystals to restore some TV Typewriters. I need 2 crystals and someone else needs one or two. I have not been able to locate any. I can get them made at International Crystal Manufacturing (ICM) for about $55 each with a 6 week lead time. http://www.icmfg.com/crystal_hc51u.html I would like to find some at a better price. I can make a small PCB with a 1.8432 MHz oscillator and a divide by 6 IC. This would cost about $75 total for 6 items, but I would like to find a crystal. I am adding the baud rate option to the CT-S serial interface, the default was a fixed 110 baud. http://www.swtpc.com/mholley/CT_1024/CT1024_Index.htm Michael Holley www.swtpc.com/mholley

22 years, 5 months

3
2
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sanyo lat-200a.

by trash_tmp＠poczta.onet.pl

not sure if it's on-topic here, but anyway... i have an ISA board marked 'Sanyo LAT-200A'. it contains amd286 cpu, couple of headland chips, four SIMM sockets, and two (even/odd) empty bios sockets. does anybody know what it is, where to find bios images and how to use it?

22 years, 5 months

5
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Sv: ASR33 Teletype interfacing

by nico＠farumdata.dk

>I have been attempting to get my ASR33 teletype connected to something >and communicating, but so far I have not been successful. I have built >the interface here : You'd probably better off in a ham related group. For them, it is a very easy thing Nico (OZ1BMC)

22 years, 5 months

3
3
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Original IBM PC, Apple Macintosh cube, interest?

by gunther＠aurora.regenstrief.org

Well, I had at least 4 people asking me individually what the Max cubes go for these days. And I do not know the answer. I could dig them out somewhere (that is, last week I could, now it may be too late ... but I might find one again.) Interesting, noone wanted the original IBM PC, even though it probably has a "Color Graphics Adapter" (woa! with 40 characters per line!) and the Mac was just B/W right? So, what would people pay for a Mac or an original PC? -Gunther

22 years, 5 months

3
2
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HP-85 Tape source

by rhahm＠nycap.rr.com

Here is a source for new tapes. They cost about $20 each. If anyone has a better source let me know. http://www.athana.com/html/minicart.html

22 years, 5 months

2
1
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hp terminal pictures?

by jwest＠classiccmp.org

I'm looking for a particular HP terminal. Don't know the model, but I know what it looks like. I know it is a 2600 series terminal, something like a 2621, 2622, 2623, 2624, 2627, 2640, 2644, 2645... but not sure which one. I'm not having any luck googling for pictures of HP terminals so I can find the one I'm looking for. Anyone know where there's pics? Jay West

22 years, 5 months

5
4
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PDT 11/150

by bmachacek＠pcisys.net

Hi All: I just rescued a Digital PDT 11/150 from going to the scarp yard. Now that I have it, what have I got? I also got a number of 8" disks and a VT100. Both units are very heavy units. I am not a DEC person, but I figured these were pretty old units and I just couldn't stand the thought of them going to the trash heap. Thanks Bill Machacek

22 years, 5 months

6
6
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Found the HP 41CV

by jrkeys＠concentric.net

Yesterday I went back to the thrift were I got the manuals for a hp 41CV and under the front counter there was the 41CV in it's carrying case. It was missing the battery so I got it for $2.99.

22 years, 5 months

2
1
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Looking for DEC DLV11J cab kits

by waltje＠pdp11.nl

Hiyas, Looking for the cab kits for the DLV11J (4-port serial) cards, so I can set up a small LSI-11 based system. I already have a small Q/Q backplane (thx, Luc !) and will hook up a nice, small switching PSU to it... together with a cabkit and general CPU cabkit panel, this will make a nice "this is a small PDP-11 system" demo. (especially if I can find the guy who did the Qbus IDE disk driver card, as I have plenty 2G 2.5" IDE notebook disks to glue to such cards :) Cheers, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA

22 years, 5 months

3
2
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Configuring a CMD CQD-220/TM

by pat＠purdueriots.com

I've got a CMD CQD-220/TM that I'm trying to get set up. I've placed it into a VAXstation 3200, and it shows up when I do a 'show qbus' and 'show dev' at the SRM prompt. At some point I was able to find a list of jumper settings on the board, and instructions to access the config menus on the board via the SRM console, but alas, no more. Does anyone have configuration info for this board? -- Purdue University ITAP/RCS Information Technology at Purdue Research Computing and Storage http://www.itap.purdue.edu/rcs/

22 years, 5 months

1
0
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eagle computer ?

by JWDWRD＠aol.com

If you have any questions about the true story- I would be more than happy to help- after all- he was my father-and yes, I can prove it if necessary as so many people love to doubt that! Jennifer Barnhart-Woodward (for the record, he died June 8th 1983)

22 years, 5 months

1
0
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Original IBM PC, Apple Macintosh cube, interest?

by cb＠mythtech.net

>Well, I had at least 4 people asking me individually what the Max >cubes go for these days. And I do not know the answer. If you are talking about the original Mac (the 128k Mac), then I believe they are pushing the $100 mark if they are complete with keyboard and mouse. Software, manuals, and guided tour audio tapes will push the price higher. I'm not a pricing expert, that just seems to be what I've seen them hover around on ebay and other trading lists. Of course, sometimes they go much lower... I picked on up not long ago for $25 shipped to me. I only bought it because it was offered on a list for a few months and no one wanted to buy it at all, and the owner was threatening to throw it out. -chris <http://www.mythtech.net>

22 years, 5 months

1
0
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Original IBM PC, Apple Macintosh cube, interest?

by cb＠mythtech.net

>Hi, I keep seeing original IBM PCs and Apple Macintosh cubes and >although it's tempting to snatch one for myself this small stuff >isn't really my collector's specialty and I have not enogh room >anyway. But thought that may be some people here think it's >interesting enough to be saved. Since this stuff is shippable >and if there is real big interest I might go through the hassle >and pick such things up ship them. If you are talking about the G4 Cube, then I would want one if the price is right. Are you talking about those, or are you refering to the old classic Macs that have the built in 9 inch black and white screen? (the old Macs would be more the era of the IBM PC) -chris <http://www.mythtech.net>

22 years, 5 months

1
0
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Original IBM PC, Apple Macintosh cube, interest?

by gunther＠aurora.regenstrief.org

Hi, I keep seeing original IBM PCs and Apple Macintosh cubes and although it's tempting to snatch one for myself this small stuff isn't really my collector's specialty and I have not enogh room anyway. But thought that may be some people here think it's interesting enough to be saved. Since this stuff is shippable and if there is real big interest I might go through the hassle and pick such things up ship them. regards, -Gunther

22 years, 6 months

2
1
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ASR33 Teletype interfacing

by ian_primus＠yahoo.com

I have been attempting to get my ASR33 teletype connected to something and communicating, but so far I have not been successful. I have built the interface here : http://www.daedalus.co.nz/~don/computing/20mahack.html , but it didn't seem to work at all. I connected the teletype to a PC clone running Linux. I set the baud rate to 110 and tested it with a DEC VT100 set to 110 first, to make sure that the PC was communicating over the serial port properly. Then, I plugged in the teletype in place of the terminal with the little kludged adapter, crossed my fingers and turned to knob to the left. The teletype just rattled, not printing anything, and nothing from the keyboard printed either. Then, I turned the knob to the right. The teletype works fine, just as it had before. I can type on the paper, punch tape, etc. Before, when I was just testing the teletype without connecting it to anything, I got the exact same results - with the knob to the left, it just rattles, almost like "Break" is held down. When the knob is turned to the right, it works like a very heavy, loud, electric typewriter, and I can punch tape. On my teletype, the knob isn't labeled, but I am assuming that the knob must be Line/Off/Local. Does anyone have any ideas on how I can get this to talk to something? I don't know a lot about teletypes, but I downloaded the wiring diagrams from pdp8.net, and have been trying to figure it out. I think I am connecting it to the correct terminals on the barrier strip, based on what the wiring diagrams say, but then again, I might have something wrong. One problem is that I don't know what the Teletype is _supposed_ to do. I have never seen one operational, so I don't know if the constant rattleing if not connected is normal or not. There might be something wrong with it that I don't know, but chances are, it's just something I am doing wrong. I got suggestions to try using an old Apple Serial card, or an original IBM XT card to connect the teletype to, but I have neither. I have several Super Serial Card II's, as well as several early clone XT serial cards, but I don't think that they will work. At this point, I don't really care what I connect the teletype to, I would just like to get it to do something, and verify that it works. Eventually, I would like to build an RS232 adapter that would allow me to use the teletype on PC clone hardware, Pr1me hardware, whatever. I understand that the teletype uses a 20mA current loop, but I'm afraid that I don't really know anything about current loop technology. Anyone have some schematics for a true 20mA to RS232 adapter? Something tells me that this little kludge I found on the 'net probably isn't the best or most reliable way to do this. Any help would be greatly appreciated. Thanks! Ian Primus ian_primus(a)yahoo.com

22 years, 6 months

3
2
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DEC DE450-CA Network cards

by r_a_feldman＠hotmail.com

I came across three DEC Etherworks Turbo PCI 10 Combo cards (DE450-CA) (vintage 1995, so not quite OT) with manuals and software. Free for postage (one or all) from Chicago. Reply to r_a_feldman(a)hotmail.com. _________________________________________________________________ Share your photos without swamping your Inbox. Get Hotmail Extra Storage today! http://join.msn.com/?PAGE=features/es

22 years, 6 months

1
0
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Strange Qbus cards: Data Systems Design and Marconi

by waltje＠pdp11.nl

Hiyas, One of the results of today's 400mi drive is a box of Qbus cards that once were in custom PDP-11 based systems in use at various locations at Marconi. Most are the usual suspects found in such systems, but there's also a bunch of weird ones: - two Data Systems Design cards.. half-height, some RAM, some PROMs and a fair bit of logic. One 16Mhz xtal. One connector (28 pins or so) - a bunch of what look to be custom-made boards, with the Marconi label and typing. M-12 and such. Does anyone know more about these? Cheers, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA

22 years, 6 months

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Help? AMI S6800 computer/Flex

by rigdonj＠cfl.rr.com

Several weeks ago I picked up an early 6800 based computer that came from an original member of the Home Brew Computer Club. The computer is based on S6800 prototyping boards that were purchased as part of a group purchase through the HBCC. I just finished posting a webpage about the computer and what little I know about it along with pictures of chassis and all the cards. Please take a look and let me know if you can shed any light on the computer or it's history or the group purchase. BTW this computer ran Flex and I did get one disk with it containing Flex. <http://www.classiccmp.org/hp/ami/ami.htm> Joe

22 years, 6 months

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27SF512-70

by Mehdi.Mir＠bakerhughes.com

I would like to know if you have any of these chips available. They are the direct flash replacement for the 27C512 that I'm looking for. Thanks Mehdi Mir

22 years, 6 months

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29F512 flash memory

by Mehdi.Mir＠bakerhughes.com

I came across your website and read that you have 29F512 chips. Are these 28 pin DIP and will they replace the 27C512 eprom? Also if they are compatible are you able to sell me a few pieces. Thanks Mehdi Mir

22 years, 6 months

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Key needed for Altair 8800b

by jrkeys＠concentric.net

Does anyone have an extra key or know a source for the front panel for the Altair Turnkey computer? Thanks in advance

22 years, 6 months

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PDP 11/83 Clock Error

by cmcnabb＠4mcnabb.net

Well, I seem to have gotten my power supply straightened out. It wasn't the switch after all, but the power supply itself. A different problem has now manifested itself. On power on I am getting this on the console: Error 61 M8190 Clock Error It then spits out the contents of various registers and asks if I want to run the test again. I couldn't find this particular error via the normal search engines. Does any have any ideas as to what the problem may be and how to correct it? -- Christopher McNabb <cmcnabb(a)4mcnabb.net> The McNabb Family

22 years, 6 months

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What terminal to use on Altair 8800b

by jrkeys＠concentric.net

Anyone a good suggestion on a terminal that I can hook up to the Altair Turnkey 8800b? Thanks in advance

22 years, 6 months

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Visual Commuter LCD

by paulha＠sonic.net

Martin, I have a working old Commuter as well, with the LCD screen. Well, at least it worked the last time I checked, some years back. I can check again and if so, I'd be happy to sell you the whole thing if you wish, for some small price. Shipping will probably be the bigger cost. Assuming you haven't already found an LCD screen or moved on to another project. Let me know, Paul Haase San Rafael, CA I have a Visual Commuter laptop which I purchased new and still works. It's stored securely in a closet. Unfortunately, I didn't purchased a LCD display for it. Would you by chance know where I may purchased an LCD?

22 years, 6 months

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Intel Programmer IPPS format

by RMaxwell＠atlantissi.com

This will meet the on-topic age requirement, at least... For programming devices like processors and EPROMS with an Intel Universal Programmer, a file format was used, called "IPPS." I need to program 8749 processors >from files in IPPS format, and have no working Universal Programmer. The format appears to be a block-oriented binary, with a file header identifying the target device, and headers of indeterminate size preceding sections of binary code. Nobody I spoke to at Intel recognizes it. Does anybody remember, or have access to, documentation/data or (dreaming in Technicolor(R)) a utility to convert IPPS files into a less-unique format, say binary or Intel Hex? This would save me from having to type in hex values from an old listing to regenerate the code. Help! Bob Maxwell Tel: (905) 792-1981 x313 rmaxwell(a)atlantissi.com

22 years, 6 months

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m4 data tape drive board sought?

by jwest＠classiccmp.org

heheheheeee I just have to ask, but I bet it's not around.... Anyone have the 800bpi NRZI option board for an M4 data tape drive? Jay West --- [This E-mail scanned for viruses by Declude Virus]

22 years, 6 months

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