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

by us21090＠yahoo.com

It was interesting to look through the archives. Sad, too. Too many of those computers are familiar!! Hey, I probably started way back with a Olivetti Underwood Programma 101 (http://www.silab.it/frox/p101). That was one of my first real experiences with a programmable computer (some would say calculator), way back in the early 70's. Somewhere after that I did some programming on a TRS-80, storing my programs on audio tape. And I wish I could use my HP-25 calculator (1976). I need to find replacement rechargeable batteries. It was amazing what one could program into that thing with only 49 steps locations! Fun stuff and RPN was interesting. Blah, blah, blah. PDP-11, DEC-System 10, Apple II in college... so on. Anyway, cleaning up through my things I've pretty much decided to break the ties and offer up a few pieces of equipment, if you know of any interested parties: ------------------------------------------------------------ SUN 3/160 CPU board (pn 501-1208) Its a 68020 @ 16.67MHz, 68881, Sun-3 MMU, 4MB, 2 MIPS, 9U VME format, B/W video, Ethernet, serial, parallel ports. This board weighs nearly 4 pounds! The site http://www.sunstuff.org/hardware/systems/sun3/sun3/3-160/ claims this is the first 68020-based Sun machine. ------------------------------------------------------------ >From the same 3/160 machine (which years ago I hauled off the 200 some pounds of chassis-- don't hate me!)... Clearpoint SNXRAM Memory Board (dated 1986) Populated with 8MB with sockets for another 4MB, if you have the necessary 144 MCM6256 (256K x 1bit) memory chips (with an extra parity bit for every eight, the numbers work out). ------------------------------------------------------------ Maxtor XT 43805 380MB SCSI Disk Full Height - Approx 6x8x3 5.5 pounds ------------------------------------------------------------ Micropolis 1325 ST506 85MB SCSI Disk Full Height - Approx 6x8x3 6 pounds Dated 1986 ------------------------------------------------------------ KIM-1 Microcomputer system (late 70s?) It's a 6502-based micro. According to http://www.6502.org/oldmicro/buildkim/kim.htm, "The KIM-1 is the first computer developed by Commodore, or better, MOS [Technologies]. MOS was an IC producing factory which Commodore took over to be sure of a constant supply of ICs.... The KIM-1 has 1152 bytes of RAM, 2048 bytes of ROM and 30 I/O-lines. Some of these lines are used to drive six 7-segment LED-displays and others are used to read the little hexadecimal keyboard." You would use audio tape for storage and use a teletype, etc. for My father built this unit up with more memory, nice power supply, etc. ------------------------------------------------------------ That's about it (I really don't consider old 386 PCs as interesting), though I do have a Casio FX-7000 graphing scientific calculator (1985). But I saw on ebay going for $6. Its not about the money, it just shows there isn't much interest in it. Thanks for your time. If you know of anyone interested in these things, let me know (I may keep the KIM-1). Scott Austin __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

8
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VT50 connection

by barry.moyer＠pason.com

Greetings, I am trying to find the 20mA connection diagram for a VT50 terminal. The VT50 is very similar to the VT52, but has a terminal strip on the underside of the terminal where the 20mA connection is made. I do not know which terminal is which. If anyone has a schematic of the VT50, I would very much like a copy. Thanks.

23 years, 4 months

1
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penpoint

by okto8＠hotmail.com

i saw an old post of yours on the classiccmp.org maillist, and im VERY interested in getting penpoint if you still have a copy. i have an NCR system 3125 with windows 3.1 for pen, and i cant stand it. any help you can provide at all would be greatly appreciated thank you very much, okto simaia _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 3 months FREE*. http://join.msn.com/?page=features/featuredemail&xAPID=42&PS=47575&PI=7324&… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_addphotos_…

23 years, 4 months

2
1
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Need help identifying a MOSTEK chip

by tkwasnie＠adelphia.net

I cannot find the 7429 in any TTL data books but I have a couple of dozen. They are 14 pin and I would like to know also so I could use them. Tom K.

23 years, 4 months

8
8
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WTD: TMS2532, HN462532 or 2732 EPROMs

by pete＠dunnington.u-net.com

On Dec 23, 0:04, Philip Pemberton wrote: > You lucky devil! A Dataman S3 (aka "Softy 3")? I saw an S4 for ?165 at a > hamfest. Had there been a bank machine within 10 miles I would have bought > it. It would have been a good buy. With the right adaptor , it can also do several types of PALs, GALS, and other devices. Sadly, my S3 is rather more limited. OTOH, it cost less than ?165. > But there is some consolation. I'm getting an Elnec PrEPROM-02aLV EPROM > programmer for Christmas, so all is not lost. That will certainly do the job. > > I can check the Hitachi data > > sheets to make sure it uses the correct parameters for OTP devices, > > in case they're different from "normal" EPROMs. > That would be great - have you got a copy of the TI TMS2532 datasheet, too? The OTP package is identical to the ceramic/quartz package, so no problem there. The HN462532 is pin-compatible to the TMS2532 as well, so that's no problem either. Both use a single 50ms programing pulse with Vpp=25V. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

2
1
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My old computer gear-- Any interest?

by mbg＠TheWorld.com

>dave you have a 28s - i loved mine till it died - sent it to hp to fix >and they sent me a 48 to replace it - it had the best keyboard instead >of having to shift alpha modes all the time - billp >On Monday, December 23, 2002, at 04:48 , Dave McGuire wrote: I loved my 42s until someone stole it... and the cost on ebay to replace it is prohibitive... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com | | | | | "this space | (s/ at /@/) | | unavoidably left blank" | URL: http://world.std.com/~mbg/ | | | "pdp-11 programmer - some assembler | | (DEC '77-'98) | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

23 years, 4 months

1
0
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A very special "holiday"

by spectre＠stockholm.ptloma.edu

In this day of special holidays, we must remember today's most important celebration ... the transistor, in 1947 (IIRC?). Merry Transistor Day, -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- All wiyht. Rho sritched mg kegcaps awound? ---------------------------------

23 years, 4 months

3
2
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VT50 Connection

by iamvirtual＠hotmail.com

Greetings, Does anyone have information on which terminal is which for the DEC VT50 terminal? The 20mA connection is done via screw terminals on the underside of the VT50, but I do not have any information on which terminal is which. If anyone has a schematic of this beast, I would be very interested in a copy. Thanks _________________________________________________________________ MSN 8 limited-time offer: Join now and get 3 months FREE*. http://join.msn.com/?page=dept/dialup&xAPID=42&PS=47575&PI=7324&DI=7474&SU= http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_newmsn8ish…

23 years, 4 months

1
0
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Tandy Xenix resources - spelling fix

by kelly＠catcorner.org

I'm trying to locate a copy of the instructions for connecting a Model 2000 keyboard to a Model 6000 computer. They were included in the swap region of one of the boot disks for Xenix 3.2.something. Does anyone have a copy of this file anywhere? I think it is called m6010.tar (or something similar). Any other Tandy Xenix resouces out there? Thanks, Kelly kb2syd

23 years, 4 months

1
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Tany Xenix resources

by kelly＠catcorner.org

I'm trying to locate a copy of the instructions for connecting a Model 2000 keyboard to a Model 6000 computer. They were included in the swap region of one of the boot disks for Xenix 3.2.something. Does anyone have a copy of this file anywhere? I think it is called m6010.tar (or something similar). Any other Tandy Xenix resouces out there? Thanks, Kelly kb2syd

23 years, 4 months

1
0
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PDP11/44 update, dead wierd fan (35VAC, 75Hz)

by trestivo＠concentric.net

Glen S, if you have trouble reworking your fans let me know, I have some available. We're in Melbourne, Florida. See our partial list of available items at www.tarinc.com thom

23 years, 4 months

1
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Free VAX in Germany

by thilo.schmidt＠unix-ag.uni-siegen.de

Hi, There is a VAXstation II/GPX in a BA23 floorstand available in the area of Regensburg/Germany. AFAIR the QBus contains CPU, GPX-Framebuffer, RAM (don't know how much), ethernet and MFM-controller. It should be in working condition and is free for pickup (no shipping!). For further information please contact t.bartzick_NOSPAM_(a)gmx.net (remove the "_NOSPAM_"). bye Thilo

23 years, 4 months

1
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Serial port joystick found

by ram_suganthi＠hotmail.com

Hi, I found a really cheap serial port joystick with drivers for Linux. Its the Gravis Stinger. It is basically for Laptop users, but is perfect for my project. Here is a link with a review: http://www.dansdata.com/stinger.htm Now I am one step closer to getting my stand-alone transputer workstation (and flight simulator).... Thanks for all the help, Ram _________________________________________________________________ MSN 8 helps eliminate e-mail viruses. Get 3 months FREE*. http://join.msn.com/?page=features/virus&xAPID=42&PS=47575&PI=7324&DI=7474&… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_virusprote…

23 years, 4 months

1
0
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What is a PVK11-G/02 ????

by bob＠jfcl.com

While pawing thru the piles of scrap boards at the local junk emporium, I came across two identical boards marked "PVK11-G/02". They have the standard double high/double wide QBUS form factor and dark brown/black module handles. The only other identification I could find printed on the boards was "Made in Australia" - no manufacturer or module number. Each board contains a 6809 (!) chip, an Intel FDC chip, a CRTC chip, a row of DRAMs, a couple of EPROMS, and some other miscellaneous logic. Now, of course, the question is "What do I have"??? A quick web search for PVK11 turned up nothing. Thanks! Bob Armstrong P.S. If you can, please cc me directly with your reply - I read this list in digest form and I can't wait a whole day to find out!!!

23 years, 4 months

2
1
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Sharp MZ-80B boot disk

by allain＠panix.com

> The Hummer itself is representative of everything > that is wrong in America today. > "The 6000 SUX, because bigger is better!" And what do we look like to outsiders when we run 440V Mainframes to do a P200's job? Hopefully the idea of running such things _full time_ is only a joke. John A. 1.4 Kilowatts, <50 hours a year. I ripped the phonemodem cable out of the wall but couldn't stop that last send in time. sorry.

23 years, 4 months

3
5
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HP/UX 10.20

by doc＠mdrconsult.com

Hi. I've been a little slow in beginning this project, and I apologize to y'all who have been waiting patiently. My year-end slam has finally quit, and I have time to play with toys. I do have Jay West's HP/UX v10.20 media in hand, and will be imaging and testing copies this week. I have 8xx and 7xx machines available for verification; anything else is your guess. I should be able to ship the first week of January. Jay sent me a list of requests for back-up or replacement media, and I'll be contacting each of you today or tomorrow off-list. If you had asked, and don't hear from me by Tuesday, please contact me off-list. Or, if you need a replacement set of 10.20 media and didn't ask before, let me know. This is NOT a warez offer, either on Jay's part or mine. If you ask for a backup set, I will assume that you have satisfied any licensing requirements. I'll be asking for the cost of media & shipping as well - about $2.50 US per CD and about $6 per DDS tape, depending on the current price of media. There are 8 CDs and 3 4mm DDS tapes. That's based on USPS Media Mail rates. International or priority may be a little extra. Please take all further correspondence off-list, so as to keep the S/N ratio up. Happy Holidays to everybody! Doc

23 years, 4 months

2
3
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Need TRSDOS 1.3 OS boot disk

by vcf＠siconic.com

For the life of me, I cannot find a good TRSDOS system disk for my TRS-80 M3. Can someone make a copy and send it to me? If so, please respond to me directly at <sellam(a)vintage.org>. Thanks!! Happy Holidays! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

1
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WTD: TMS2532, HN462532 or 2732 EPROMs

by pete＠dunnington.u-net.com

On Dec 22, 22:36, Tony Duell wrote: > I would have to hunt for them, but I might have a couple of new Hitachi > 462532s in the OTP (plastic) package. I bought them to repair a digital > LCR meter, and then found that the one thing that had not been 'got at' > was the EPROMs (fortunately) so I never used them. > > I have no idea if they're good, and I don't think I can easily program > them (that was to be another project if I had to re-burn the firmware for > the meter), but if I can find them, are they any use to you? If Tony can provide OTPROMs, or you can get EPROMs from BG Micro, my S3 should be able to program them. I can check the Hitachi data sheets to make sure it uses the correct parameters for OTP devices, in case they're different from "normal" EPROMs. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

2
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VAX 11/780 anyone with some working experience out there?

by gunther＠aurora.regenstrief.org

Hiho, folks, I have been gone from the list for several months now. Seems like eternity. All my nice machines are very depressed because they get no attention. The VAX 11/780 is shivering in the garage, cold wants to run to warm itself up, but I have not enough time to let it. I am missing some critical pieces of information, to get it booted and install BSD on the RA90 disk that I have installed via UDA50. How do I make myself a boot configuration file that starts the system >from a newly installed UDA50? Of the boot configs that I have on the RX01 disk none seems to fit. And I don't know how to show the contents of these files on the terminal such that I could learn what those boot commands files do an how to enter them manually. I have no idea where to put the Unibus address and start address and all that stuff. I'm not even sure I have set the UBA50's address switches correctly. I also have installed a second RX01 drive and I was wondering how I can tell the console to show me a @DIR of that other drive? Is there a way to switch between the default drive or to give a unit number to the typical commands (such as @DIR)? My primary goal is to make copies of some of the more critical RX01 disks that I have, since some of the disks already have errors on them I don't want to loose my last console boot disk. I have asked some of these questions before but got no response, seems like noone has an 11/780 running. I would really love to get into touch with some person here who has a VAX11/780 or knows it so well to can give directions from memory. Aren't there 11/780 people here on the list? thanks, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

23 years, 4 months

4
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microcontroller geeking, a new list is born

by mcguire＠neurotica.com

(I suppose "geeking" could be considered a word. ;)) Hi folks. For some time now, Philips has had a mailing list intended for discussion of their 8051-architecture products. It was very poorly run, and there were many complaints about slowness, duplicate postings, etc, but it was a popular list nonetheless. A few days ago, they announced that they'd be moving the list to a web-based forum, and everyone screamed. Fortuitously, many weeks prior, I had set up a mailing list called "microcontrollers" on my mail server, but hadn't told anyone about it. Well, you can see where this is going...As expected, Philips' web forum was dead on arrival, and there are about fifty people (and counting) on my microcontrollers list. Mine isn't intended to be 8051-specific, but many of the first subscribers were refugees from the Philips list cutover, so much of the traffic has been 8051-related so far. I hope for it to be a general (but highly technical) forum for discussion of topics related to embedded systems development. Anyway, since I know several of you (especially John Wren, whose name I see all over the net in 8051 code repositories!) are into embedded stuff, I thought I'd drop a note to the classiccmp community and let you know of the list, and invite you to subscribe. It's microcontrollers(a)neurotica.com, and you can subscribe by pointing a browser at http://mail.neurotica.com:8080/mailman/listinfo/microcontrollers. -Dave -- Dave McGuire "She's a cheek pincher. I have scars." St. Petersburg, FL -Gary Nichols

23 years, 4 months

1
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Brag: Scope probes

by tothwolf＠concentric.net

I *finally* managed to get probes for my Tektronix 2213 scopes late this last week. I still can't quite decide which project to tackle first ;P Unfortunately, most of the P6120 probes are missing the slip-on clip and ground leads, so I appear to have some more searching ahead of me. Only one probe has a ground lead, which has obviously been damaged and repaired by a previous owner. I suspect and hope that the ground leads and clips will be easier to find than the rest of the probe. Does anyone know offhand of a source for these parts? I don't expect Tektronix to have the parts still available, since they told me that they sold off all parts and spares for the 2213 series to GTE. The last time I talked to someone at GTE about 2213 parts, they were less than helpful, and suggested I either send them the scope for repairs (it just needs the plastic front panel) or go buy a new scope. -Toth

23 years, 4 months

8
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TRS-80 Semi-Virtual Disk Drive

by eric＠rothfus.com

Many months ago, due to my frustration trying to find real floppies to run on my TRS-80's, I began to build a virtual floppy drive for it. The idea is that I can download software from the Internet (like Ira's great site) and run it on my TRS-80 without having to make a floppy. This little box (the SVD) has an RS232 port on one side, and a TRS-80 floppy edge-card connector on the other. You download a DMK image to the SVD and the TRS-80 will boot off of it. You can use the standard TRS-80 DOS tools then to make a copy of the disk...or whatever. The box is in pretty good shape now, but still not fully functional. You can boot most OS's and even many copy-protected disks. You can't, though, write to the SVD from the TRS-80. I'm looking to make this box available for all TRS-80 nuts. I don't want to make any money off of it, but would like to use any profits (beyond cost of parts) to fund sites like Ira's or other vintage computer concerns. And the more people who will buy it, the cheaper the cost of parts. I'm guessing that I can get the cost of the box down to $50 for parts, so I'm thinking that a $75 price tag would work. Soooo, I'm looking for one or two beta testers to help me make sure that I've covered all of my bases, as well as to help move the SVD forward. I need help in testing, but also writing useful software for Linux and Windows to manage the download to the SVD. Also, I'm going to need help figuring out the copy-protection of some disks. Any volunteers out there? For more information, check out the beginnings of the SVD web-site: http://www.rothfus.com/SVD . Or just e-mail me eric(a)rothfus.com. Thanks! Eric Rothfus

23 years, 4 months

2
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hp 9920

by landerr＠infoblvd.net

Was wondering if you still had the 9920 stuff ? Do you have a keyboard as I am in need of one.... Im in USA, and will pay all shipping. Thanks Ryan

23 years, 4 months

2
1
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Sharp MZ-80B boot disk

by avickers＠solutionengineers.com

Does anyone have a working boot disk for a Sharp MZ-80B? I went to use mine for the first time in a few months, and all of the disks are either reporting "Not a Master" or "Read Error". Since I *know* that at least 3 /should/ be bootable[1], there is clearly something awry with either the disks or drives. I'm going to try my spare set of drives tomorrow, but if that doesn't work then I'm stuck :( TIA [1] One of them I made myself, used it, and even labelled it "80B Boot Disk". And that reports "Not a master" now. Grrrr. :( -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.com

23 years, 4 months

19
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Tek 213

by kerry.power＠chcc.nsw.gov.au

Thanks to all who have offered real American kindness to an Aussie who blundered into your mailing list. John L is helping me. Regards, Kerry.

23 years, 4 months

1
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Question about TI calculator

by dmabry＠mich.com

I became the grateful recipient of a TI Programmer today. A buddy at work said "here, you like calculators, right? Better than throwing it away." Well, I said "thanks!" Now, in looking about the internet for some info on the battery styles for these things, I have a couple of questions that I cound't find the answer to. This calculator has a battery pack called BP-8 which has 2 AA ni-cads and a small circuit in it. It connects to the calculator internally with a connector that would also mechanically mate to a 9 volt battery. Now I would not expect a 9 volt battery to work where 2 AA's work, but I'm not sure. In looking at Gene's web site he says the BP-8 is also used on the TI-30 and I see TI-30's on ebay saying that they work with 9 volt batteries. I will replace the two AA's with new ones. That should make the BP-8 good again. I guess the is a roundabout way of asking for some background on the power requirements of this calculator. Unfortunately my buddy had lost the AC adapter (apparently it was an AC-9132, thanks Gene!). So I'll be looking for one of those. 5.7v, 240ma, and that small 2-pin connector. Thanks for any help. -- Dave Mabry dmabry(a)mich.com Dossin Museum Underwater Research Team NACD #2093

23 years, 4 months

4
7
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ZMAIL goes live

by acme＠ao.net

Hi -- After all the whining I've done on this list concerning virii attacking the Windows-based PC I've been using for email, I'm pleased to announce that it's no longer a problem. This message was composed and mailed using the email system I've been working on -- ZMAIL. The client-side hardware consists of a Zenith Z-100 with 1 20 MB hard drive and 192 KB RAM, plus a 56 K modem. I really don't know what the host machine is, except that it's running Debian Linux. The client-side software consists of an offline email reader/writer -- ZMAILER - -- which has many of the features you'd expect: address book, reply, forward, import file, etc. (no sort capability yet) Additionally, there are utility programs which concatenate the outgoing messages into a single file, break the incoming messages out from a single file, connect to the host, and transfer the data back and forth. On the host side, I wrote programs to grab new incoming mail and pass it to the client, as well as a utility to break out individual outgoing messages from a single file and post them via SMTP. This has been a great learning experience as I had to learn enough about CP/M-86, Linux, SMTP, and the 2661 UART to get this system working. It also (IMHO) is a great use of this classic old Z-100 -- actually two of them, one at home and one at my shop. Anyway, thanks to all of you who very kindly helped me during the course of this project. Especially, thanks to Joe Rigdon, who gave me the Z-100s, and also to Tony Duell, who very patiently helped me with the basics of programming the 2661. Classic computers rule! (even at 2400 baud ;>) Later -- Glen 0/0

23 years, 4 months

1
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Thing to check before powering up DEC VT100

by ian_primus＠yahoo.com

I just acquired a new, unused DEC VT100 terminal. I have not plugged it in yet, because I am a little weary about firing up a piece of 20 year old hardware that has never been turned on before. Something tells me that there are probably some dried up capacitors lurking in there somewhere, just waiting to blow as soon as I flip the switch. Visual inspection really can't tell me anything here, there won't be any burn marks or blown caps in something that has spent it's entire life wrapped in plastic. What areas in particular should I check? Are there any parts that are prone to failure in these terminals? Thanks in advance! Ian Primus ian_primus(a)yahoo.com PS - On a similar note, does anyone know of someplace online that I can find a VT100 keyboard? I have one here, but it's in really terrible shape - very yellow with the name of a school written on it. It works, save for the "Return" key that normally takes two presses to register, but I would like to find something in a bit better shape and with all the keys present and accounted for.

23 years, 4 months

1
0
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Acorn A3000 and A3010 (was: Re: Apple disk controllers)

by pete＠dunnington.u-net.com

On Dec 20, 17:35, Philip Pemberton wrote: > Frank McConnell wrote: > > There was also a Vista 8" floppy controller for the Apple ][, built > > around the WDC 1793 I think. I have one of those in a Basis 108. > 1793? That was in the same family as the WD1770 and 1772, wasn't it? Same manufacturer but different family, and not interchangeable. > Speaking of which, has anyone got a WD1772 spare? I'd like to put a > high-density (1.6MB) disc drive in my Acorn A3000, but the instructions I've > got to upgrade it say that I've got to use a WD1772 with an 02-02 batch > code. Yes, they can run at a higher clock speed. About the only place you find them are in Atari 520s and 1024s. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

1
0
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Surge protectors or fire hazard

by dwightk.elvey＠amd.com

Hi I've just seen the third surge protector blow up and this time, it almost started a real fire. I've had two of these go up in smoke that were in metal strips. These generally make a lot of smoke but I think the metal spreads the heat enough that the fire danger is small. Now, most of the newer ones are made from plastic. The last one that just burned, started a small fire on the back side of a chest of drawers. Luckily, the chest didn't stay lit. It did charcoalize one of the feet. While these things come with a 15 amp breaker, the MOV's fail and draw something less then what is required to blow the breaker. I wonder if any of the fire prevention groups are looking into these time bombs? Dwight

23 years, 4 months

6
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Surge protectors or fire hazard

by dwightk.elvey＠amd.com

>To: cctalk(a)classiccmp.org > >> I've just seen the third surge protector blow >>up and this time, it almost started a real fire. > > >> I wonder if any of the fire prevention groups are >>looking into these time bombs? > > >Are you buying units that are UL approved? Are you kidding, I don't think I've ever seen one without a UL sticker. > >When I blow up power strips so far all I get are sparks and a very small >puff of smoke. This is what the metal ones do ( at least the two I've seen go ). It was a plastic one that caused the troubles. When I've looked in the metal ones, I've never seen a separate fuse. I don't know what the plastic one had, it is a melted mess. Dwight > > >

23 years, 4 months

3
2
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PDP11/44 update, dead wierd fan (35VAC, 75Hz)

by glenslick＠hotmail.com

Well I managed to get a M7095 module ($25 plus shipping) for the PDP11/44 I recently acquired and now I can connect to the console >>> prompt after powering it on. Plus I figured out how to execute the firmware utility on the CMD CDU-720 (anyone have docs for this board?) so it appears that the system is fairly functional. However, after a while I noticed that some of the modules seemed to be running rather hot and then I noticed that one of the three fans is not working. I pulled out the fan tray and found that I can manually spin up the two good fans with little effort but the bad fan sticks and won't spin. These fans are labeled Torin TA450 Model A3102-10 35VAC 75Hz. Anyone know where a replacement fan could be obtained? _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963

23 years, 4 months

5
5
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Apple disk controllers (was: Sharp MZ-80B boot disk

by fmc＠reanimators.org

Fred Cisin (XenoSoft) wrote: > > > seeing one that had some extra diagnostics and stuff. And, of course, > > > there was the Sorrento Valley Associates board that did MFM in Apple][ > > On Thu, 19 Dec 2002, Sellam Ismail wrote: > > Ooh, juicy! Where can I get one of those? > > It's been a while since I've seen one. They were mostly pushed in the 80s > for being able to connect 8" drives! There was also a Vista 8" floppy controller for the Apple ][, built around the WDC 1793 I think. I have one of those in a Basis 108. -Frank McConnell

23 years, 4 months

2
1
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CompuPro RAM board settings

by RCini＠congressfinancial.com

I pulled out my IC Master last night and indeed they are 4kx1 chips. So, the board is a 32k board. -----Original Message----- From: Eric Smith [mailto:eric@brouhaha.com] Sent: Thursday, December 19, 2002 10:20 PM To: cctalk(a)classiccmp.org Subject: Re: CompuPro RAM board settings Rich Cini wrote: > I just got a CompuPro RAM20 memory board with no manual. [...] > The memory array is 8 columns of 8 chips, type MM2147J. I'm thinking > that these are 2kx1 chips, resulting in a 16k board. They're 4K chips. Someone somewhere may have sold 2K chips (probably as half-good 4K chips), but they sure weren't very common.

23 years, 4 months

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CompuPro RAM board settings

by fmc＠reanimators.org

Richard Cini wrote: > I just got a CompuPro RAM20 memory board with no manual. I'm looking > for the DIP switch settings specifically, but a copy of the manual would be > very helpful. And here I was kicking myself for forgetting to take the CompuPro Product User Manuals volumes back out to storage where they would be buried in boxes all the way at the back. My forgetfulness is your good luck tonight. > It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The > memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these > are 2kx1 chips, resulting in a 16k board. No, it's a 32KB board. 8 rows of 4KB each. Your "missing" ICs are explained below too. Switch 1 enables 4K blocks, one position per row. SW1-1: row 0 ON enables row; SW1-2: row 1 OFF disables row ... SW1-8: row 7 Switch 2: Positions 1-4 set the base address of the board on a 4KB boundary. SW2-1 is the least significant bit, SW2-4 is the most significant, write your desired start address in binary and then a 1 means turn the switch on and 0 means turn it off. So OFF OFF OFF OFF means the board starts at 0x0000, ON OFF OFF OFF at 0x1000, .... Position 5: ON: RAM XX is a standard/global memory OFF: RAM XX is to be used as extended address or bank select memory Position 6: ON: enables response (deselect) to PHANTOM OFF: disables response to PHANTOM Positions 7 and 8 matter if the board is being used as a bank select memory. If you want the board to come up enabled when you turn on the computer, SW2-7 should be on and SW2-8 should be off. If you want the board to come up disabled, SW2-7 should be off and SW2-8 should be on. Never leave them both on or both off. Switch 3: If you are using the board as extended address memory, put the 25LS251 in position U11 and leave positions U6 and U10 blank. (This is why you're missing a couple ICs!) Then, Switch 3 sets bits A16 through A23 of the extended address. SW3-1: address bit A16 ON = 1, SW3-2: address bit A17 OFF = 0 ... SW3-8: address bit A23 If you are using the board as a bank select memory, put the 25LS251 in position U10 (leaving U11 blank) and put a 74LS74 into position U6. Then, Switch 3 sets the bank select port address. SW3-1: port address bit A0 ON = 1, SW3-2: port address bit A1 OFF = 0 ... SW3-8: port address bit A7 Switch 4: If you are using the board as a bank select board, Switch 4 sets the data bit(s) that will enable the board when written to the bank select port. SW4-1: data bit D0 ON = 1, SW4-2: data bit D1 OFF = 0 ... SW4-8: data bit D7 Note that if more than one switch is set, then the board will be enabled if *any* bit matches. -Frank McConnell

23 years, 4 months

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CompuPro RAM board settings

by rcini＠optonline.net

Hello, all: I just got a CompuPro RAM20 memory board with no manual. I'm looking for the DIP switch settings specifically, but a copy of the manual would be very helpful. It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these are 2kx1 chips, resulting in a 16k board. Any help appreciated. Thanks. Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

23 years, 4 months

3
2
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AlphaServer 2000/300 aka Jensen

by runtime＠wzrd.com

I've got one of these that I used extensively a few years ago (superceded by AS300 4/266 and then a C*q DS10) that won't do anything at all. No SRM console comes up. Problem is that about 3 years ago I removed the memory, which consisted of what it came with (DEC standard 32 MB) plus a 64 MB set which I believe was actually an IBM product. When I took the faithful 2000 out of service I put as much of its memory as I could into the AS 300 4/266, and gave the AS300 it to a client (out of state). When I went back to the 2000 to get it ready to give away to a student group that wants to run Linux on it, I realized that I'd removed all of the memory and could not remember how to populate the slots. I do remember that when I put the 64 meg in it wouldn't work at first, but Field Service told me I had to interleave the 8 mb sticks and the 16 mb sticks. So, I'd be grateful if anybody could answer these questions: 1. How are the 8 slots populated, normally? 2. Should I see the SRM even with no memory, or memory incorrectly installed? 3. Is "54-21246-FA" (2MX33) DEC memory AS2000 memory or AlphaStation 200 memory? (I've had a few of those around the shop over the years). Thanks in advance. I'm glad I found this group. I started my business with a VT103 / RX02 / RT11 v3 combo, went through Micro-11/23, then 73, then MicroVAX 3100, AS2000, AS300, and now the DS10. Don Mitchell runtime(a)wzrd.com www.run-time.com

23 years, 4 months

3
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AlphaServer 2000/300 aka Jensen

by runtime＠wzrd.com

Thanks, Huw. It came up with 4 sticks of 4 MB 36bit memory, placed n alternate slots down from the top. I now think that it won't ever come up w/o 4 sticks of something -- I had 2 sticks of 16mb memory (the other 2 went into the 300 4/266) and I guess it just won't boot w/o 4 sticks. Thanks again. Now the kids can have it and do their Linux thing. I'll chase down some memory, or they can. Don

23 years, 4 months

3
3
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Old TI analog sound chip; info?

by n8uhn＠yahoo.com

Was'nt the "spo256" a ti voice synth chip or was it a gi product. i do remember when radio shack carried the spo256 and the companion text to speech chip (cannot remember the part number for that chip) Bill. Message: 42 From: "Davison, Lee" <Lee.Davison(a)merlincommunications.com> To: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org> Subject: RE: Old TI analog sound chip; info? Date: Tue, 17 Dec 2002 09:02:10 -0000 Reply-To: cctech(a)classiccmp.org > I'm looking for the documentation for the olde TI analog > sound chip; this dates back to the late 70's early 80's if > my memory serves me correctly. I don't even remember the > part number. AFAIK, it had some kind of "I2L" (I squared > el) technology or somesuch, and it was mostly analog, with > some digital control (but nothing like a DSP or midi). > Anyone recall this chip? Anyone have the datasheet for > it online or willing to scan it in? SN76477N, http://rgvac.978.org/chips/sn76477datasheet.pdf > Background: I remember playing with it a *long* time ago, > and wanted to model it in software :-) I remember it well, it was the canine gonads until the AY3-8910 and it's ilk appeared. Cheers, Lee. __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

4
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TEK 213

by kerry.power＠chcc.nsw.gov.au

Hi, John. I got your address whilst searching for info on a TEK 213; you came up on a chat room. I bought a 213 recently at a government auction here in Australia, but it doesn't work properly. The 213s seem to be as rare as rocking-horse-droppings here, and I can't find a manual. Are you able to copy the manual you have?? If so, what would it cost?? If it's too difficult or expensive, maybe just the circuit diagrams & views of the PCBs. I'm not sure about postage, it might fit a large Global Priority Envelope at US$9. I'd appreciate any help. Regards, Kerry.

23 years, 4 months

3
2
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Computers with ports coming out the front?

by vcf＠siconic.com

I am trying to identify various computers that have had their ports situated in the front of the chassis as opposed to the back. The Atari 800 would be one example (game ports in the front). Are there any other examples anyone can think of, especially where peripheral (disk, printer) or perhaps network ports are concerned? -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

11
12
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Y2K/Y10K for V5.03 of RT-11

by mbg＠TheWorld.com

Okay, that was supposed to have been private... (sometimes the reply to list is a pain... but it's my own fault). Megan

23 years, 4 months

1
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Nice Find today and some good books

by jrkeys＠concentric.net

Found a Micro Genius IQ-501 Computer Game console and one controller/joystick for it at a thrift. It's a NES/Famicom Pirate Clone. You can see it a this site page down to the bottom: http://www.gamersgraveyard.com/repository/nes/pirate/pirate-clones-A-M.html Also got a couple books in from Amazon; the one called High Score! the illustrated history of electronic games is a good source of info and pictures of old consoles. The other book called "the ULTIMATE History of Video Games" I have not started yet. My copy of Collectible Microcomputers came by mail today and I hope to start reading it soon.

23 years, 4 months

2
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Wanted: Fairchild uA79MG voltage regulator

by tothwolf＠concentric.net

I've been looking for a replacement uA79MG negative voltage regulator for awhile, but so far haven't been able to find one. It is for a custom power supply for an embedded system made in the early 1980s. Fairchild's part number for the device is uA79MGU1C, which they call a 'Power Watt' package. It actually looks like a TO-220, but has 4 leads. The regulator bolts to a heat sink on the supply's board. I need at least one of these parts, but could use a spare or two if someone has a bunch hiding away in their parts cabinet. I could also use a couple spare uA78MG (uA78MGU1C) regulators too, but they would just be put away as spares for these power supplies. -Toth

23 years, 4 months

1
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SCSI 9-Track tape under VMS..?

by spector＠zeitgeist.com

From the its been way too long to remember department... I just put an old HP SCSI 9-track tape drive on my 4000/400 running Vax/VMS 5.2... Does VMS probe SCSI devices at boot time? Is there a way to access this drive without re-generating the system..? David ------------------------------------------------------------------------ - David HM Spector spector(a)zeitgeist.com software architecture - network/security consultation technical due diligence - technology planning/analysis Office:(631)261-5013 Cell: (631)431-5756

23 years, 4 months

32
75
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IBM 5120

by computermuseum＠pandora.be

Hi, I'm rather new inhere. I've got into my garage an IBM 5120 machine with his printer and an external diskette unit with 8 inch flops. I've got also all documentation and technical documentation of it together with all operation disks. It's running on APL (A Program Language) and it is working. Does someone know if this is a machine that is worth something? Please advise... it's rather huge and heavy and it is standing now in my garage which is rather moisty and cold..., mayby I have to move it somewhere else if it's worth it... Michel Wouters

23 years, 4 months

7
8
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PDP11/44 update, dead wierd fan (35VAC, 75Hz)

by glenslick＠hotmail.com

I found this thread from 4 years ago. I'll give it a try... http://www.classiccmp.org/mail-archive/classiccmp/1998-09/0953.html >From: "R. D. Davis" <rdd(a)rddavis.org> >Reply-To: cctalk(a)classiccmp.org >To: cctalk(a)classiccmp.org >Subject: Re: PDP11/44 update, dead wierd fan (35VAC, 75Hz) >Date: Wed, 18 Dec 2002 22:06:28 -0500 > >What you don't need is a replacement fan. :-) I had a similar problem >when I got my 11/44 several years ago; Tony Duell kindly instructed me >on the _proper_ way to solve this problem. _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

23 years, 4 months

1
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computer audio tape formats

by n8uhn＠yahoo.com

I seem to remember that eather "radio electronics" or "rainbow" magazine had an article on how to build a computer audio tape conditioner. it was for the coco. On Tuesday 17 December 2002 9:50 pm, tim lindner wrote: > I am looking for information regarding how various computers wrote > information to audio tapes. > > For example, the Tandy Color Computer wrote ones and zeros to audio tape > in the following format: > > 'one bit': one sinusoidal cycle @ 2400 Hertz. > 'zero bit': one sinusoidal cycle @ 1200 Hertz. > > The bit rate is variable on a CoCo tape. But averages to about 1500 bits > per second. > > I am contemplating creating an audio tape anaylzer to help me recover > some data. I would like to make the program useful to thoes outside the > Color Computer community. But first I need to understand all of the > different methods used to put data on audio tape. --__--__-- __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

1
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System/23 Support Disks

by n8uhn＠yahoo.com

Chris, are you talking about the sys/32? i have never heard of the sys/23. i do have some sys/32 disks - not the ones you mentioned, though. i still have the manuals (tech binders) with the schematics and trouble shooting stuff and i may have the sys/32 ssp and a few other disks around here somewhere. i still have two sys 34's and one sys/36 in my collection - one of the 34's and the 36 are rare config's - they both have extended chassi's and extra hard (disk) drives in them. the 34 has 2 hd's and the 36 has three hd's. it's really interesting that the 34 has 8 inches of chassi added to it and the 36 has three feet of chassi added to it. i do have alot of sys/36 software and some sys/34 software. if you do have a sys/32 - you can have the manuals and software - just arrange shipping. i no longer have a sys/32 and no longer need the stuff. Bill (n8uhn at yahoo dot com) __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

5
5
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Sharp MZ-80B boot disk

by SUPRDAVE＠aol.com

In a message dated 12/18/2002 7:53:39 PM Eastern Standard Time, cisin(a)xenosoft.com writes: << > > And it's usually NOT a good idea to put your LAST boot disk into the > > drive! Although normally not a problem with most "normal" drives, there > > have been SOME (most notably Apple ][) that were capable of malfuntioning > > in ways that would cause them to erase/wipe/damage/ diskettes even when > > write-protected! > > What an amazing feature! On Wed, 18 Dec 2002, Tony Duell wrote: > _Any_ drive if malfucntioning could have write-gate stuck on and also > ignore the write protect line. After all, those signals are combined in > the logic circuitry somehow, and those gates could malfunction. Ooops! I meant to say that on the Apple ][ a malfunctiong disk controller could override write protect, even on a non-malfunctioning drive. THAT is the special unique feature. >> I had that happen once! Ruined a number of my floppies until I finally figured it out. Bought one from Jameco for either $50 or $80 way back in the late 1980s. -- Antique Computer Virtual Museum www.nothingtodo.org

23 years, 4 months

1
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