test-drb

test-drb@ccmp.vtda.org

101090 discussions

by roger.holmes＠microspot.co.uk

On 14 Jun, 2006, at 05:17, cctech-request at classiccmp.org wrote: > > tom: > > Can you provide a source where I can purchase 11/16 inch wide > spools of > paper (prefer yellow) for the reader mentioned above > > Thanks > > David C. Masterson Not yellow, but as you are in the states, try here: http://www.wncsupply.com/paptape.html I have a source in the UK for yellow ONE inch tape, and they can make 11/16 to order, but minimum batch is hundreds if not thousands of rolls. Roger Holmes

19 years, 6 months

Wang gear on eBay, 2200, no bids

by wmaddox＠pacbell.net

There's supposedly a 2200 in there, though there's a lot of stuff I don't recognizes. Any Wang fans on the list? http://cgi.ebay.com/vintage-COMPUTER-LOT-huge-heavy-WANG-PMI_W0QQitemZ17005… eBay: vintage COMPUTER LOT huge & heavy ,WANG ,PMI (item 170055531046 end time Dec-05-06 16:51:38 PST) --Bill

19 years, 6 months

library book sales

by aek＠bitsavers.org

> Have y'all had much luck acquiring vintage computer books/info via > library book sales? Absolutely. Silicon Valley is one of the best places to be for this. This is where "vswmoretp" on eBay get some of their stuff. There is a whole used book buying/dealing subculture around the book sales out here. Get to know the people at your local library that handle the book sales. If you are after mags like Datamation, you may need to talk to them about saving them for you, since they probably would be recycled otherwise and not even put up for sale, since periodicals don't sell well.

19 years, 6 months

ebay dilema

by aliensrcooluk＠yahoo.co.uk

--- Teo Zenios <teoz at neo.rr.com> wrote: > What do you do when you buy a small lot of items, a > piece that you wanted is not included (shown in th e > picture and stated in the inventory), and the sell er > does not respond to your questions (but you paid > very little for the lot and there was a couple ext ra > things included)? What would you people do? > A similar thing happened to me a while ago. However, my situation was slightly different in that the seller apologised for losing one of the items and asked me if I was happy with the extra items he sent instead. In your case, if the seller doesn't respond I'd open up a dispute. If the seller still doesn't repond then post negative feedback. Regards, Andrew B aliensrcooluk at yahoo.co.uk

19 years, 6 months

Floppy Disk Identification

by marvin＠rain.org

As a several boxes of floppy disks slipped and fell, the question occurred ... if you have a disk with only a vague idea of what computer it might go to, is there an easy way to find out what computer made it without trying it in a number of systems? Is Teledisk or Dave's program likely to be useful? And what about Apple disks? And to make it "easy", assume the disks all look like soft-sector disks.

19 years, 6 months

Lyle Bickley: Update on TSX+ ??

by ssj152＠centurytel.net

Lyle, It has been a while since you updated the Classiccmp list with the status of your project to make TSX+ available to hobbyists. Can you tell us where the project is at the present time? Regards, Stuart Johnson

19 years, 6 months

Driving 220/330 terminated loads

by melamy＠earthlink.net

the only time a totem-pole output would have an issue if it had to fight another output - one low and one high. As long as you are driving using a single output that has to deal with the resistor network, you should be just fine. The interface you are describing is basically the same as on a 8" disk drive. best regards, Steve Thatcher -----Original Message----- >From: Chuck Guzis <cclist at sydex.com> >I was thinking of driving the lines with an LS540. which has an I(OL) >of 24 ma per output. What I was curious about was if the low-level >sink current is sufficient, will I run into problems with the totem- >pole pullup? In other words, do I really need OC drivers? > >Thanks, >Chuck >

19 years, 6 months

pointers on what tss/8 really needs to run

by brad＠heeltoe.com

First off, my apologies to the pdp-8 aficionados on the list. While I used 8's back in the day there's a lot I don't know about them. I'd like to understand *exactly* what hardware tss/8 needs to run. My understanding is that it will only run on an 8/I with the following options KT08/I timesharing option MC8/I memory option KE8/I multiply divide option I'm curious because I wrote up a simple pdp-8 verilog description which runs FOCAL and I think it would be fun to run tss/8 also. I'd like some pointers to documents which describe the options needed and details about them. Certainly all of the IF/DF extended memory is needed, since last time I ran tss/8 we had 32k. I'm guessing that this is covered in the MC8/I documents. I'm curious if the KE8/I is the same as the EAE. And I've never seen a description the KT08, all though I can guess what it does (traps any 6xxx as well as halt and switch register access at a minimum, but anything else?) Also, if there is a better list for this sort of question please let me know. I've never read alt.pdp8.whoknowswhat but maybe I should. -brad

19 years, 6 months

Printer ribbon sources

by rcini＠optonline.net

All: I just came across a Tandy printer (DMP105, 26-1276) and I'm having problems finding a ribbon for it. The OEM replacement catalog number is 26-1288 which I believe can be used on the DMP-106, too. I'm wondering if anyone has knows of a suitable replacement or a consistent source for dot matrix printer ribbons for "classic" printers. The ribbon itself looks to be in good condition so I guess I could re-ink it, in which case, what's the best ink for that? Thanks. Rich Rich Cini Collector of classic computers Lead engineer, Altair32 Emulator Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ Web site: <http://www.altair32.com/> http://www.altair32.com/ /***************************************************/

19 years, 6 months

Driving 220/330 terminated loads

by cclist＠sydex.com

I know the "right" answer to this one--you drive 220/330 ohm terminated loads with 7438-type OC drivers. But, going a bit afield >from "correct", can one drive a single 220/330 ohm terminated load at the end of a 3m length of ribbon cable at 1 MHz using plain old totem- pole STTL output? How about an LSTTL or HCT totem-pole driver? You can assume that the receiver is a 74LS14. Thanks, Chuck

19 years, 6 months

TI CC40

by witchy＠binarydinosaurs.co.uk

Hi Folks, Am I imagining things or was there a discussion very recently about Texas Instruments' little baby? Whilst browsing ebay uk last week I found one that was NIB so naturally I had to have it :) The seller works 5 minutes >from my weekend home so it was even better. Pictures will be up once I've taken them. Serial is #384 so does anyone know how many escaped from Ti Labs? Or did they use a random serial numbering scheme..... Ta, -- adrian/witchy Binary Dinosaurs creator/curator www.binarydinosaurs.co.uk - the UKs biggest home computer collection?

19 years, 6 months

CoCo Videotext version

by joachim.thiemann＠gmail.com

I am not a Coco collector, but I noticed this on the local (Montreal) Craigslist, and figured it might be of interest to people here. Note, I have no connection to the seller. http://montreal.craigslist.org/sys/243510966.html Joe.

19 years, 6 months

CDC power supplies available.

by jos.mar＠bluewin.ch

Just wanted to check before I toss them : I have a 5V 25A and a +/- 15V 3A linear powersupply that were part of some CDC machine ( early seventies i guess ). If anyone needs them... Location : Zurich Switzerland Jos Dreesen

19 years, 6 months

Paper tape supply, was Re: paper tape for GNT 4601

by ajp166＠bellatlantic.net

> >Subject: Re: Paper tape supply, was Re: paper tape for GNT 4601 > From: David Griffith <dgriffi at cs.csubak.edu> > Date: Sat, 02 Dec 2006 15:54:02 -0800 (PST) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > > >Sidenote: how hard would it be to make a paper tape reader and punch from >scratch? The idea is to have a lightweight unit for playing with my >SBC6120 and perhaps Altair reissue/clone (if and when I get one). > A reader is fairly simple matter lookup the OAE [oliver audio engineering] reader design. However the punch is a mechanical project. The only kitted one was the Heath (H10 I think) punch reader and that was not very reliable or light. Allison

19 years, 6 months

Discussion of large systems

by aek＠bitsavers.org

> The whole line of > 20 years of IBM muscle computers is basically gone. The same is true > for the Burroughs and Univac machines of the same era. It is MUCH worse for Burroughs and Univac. IBM was sold in such high numbers that the probability of some surviving was higher. Both Burroughs and Univac had an active "scorched earth" policies for systems in the field to keep them out of the hands of resellers. I don't know of any Burroughs 5xxx/6xxx systems or Univac 1100's that still exist. John's Univac III is about the biggest old Univac system that I know of. There is also a disproportionate number of large scientific computers that have survived vs business systems. There much fewer in CHM's collection.

19 years, 6 months

ClassicCmp Awareness

by marvin＠rain.org

I've been selling some stuff on ebay and have found a number of people who aren't aware that this listserver exists. Basically, I'm referring them to the ClassicCmp website and they can view the archives and decide if they want to join. It was eyeopening to see that people who have a big interest in this stuff weren't aware of this listserver! I wonder if a link to the Vintage Computer Marketplace would be appropriate to put on the ClassicCmp home page?

19 years, 6 months

HP Time-Shared Basic

by billdeg＠degnanco.com

I was recenlty given a copy of the "A Quick Reference to HP Time-Shared BASIC" Printed 9/1969. It's a pamphlet-sized doc. If anyone would like a copy and it does not already exist on the Internet I will make a PDF and put it up on my web site. The system associated with the guide is the Hewlet-Packard 2000A. Bill D

19 years, 6 months

ZX-81 / TS 1000 keyboards

by alhartman＠yahoo.com

I'd like to pursue this. My partner is checking into a company he found as well. We have plenty of old keyboards which have breaks in the tracks due to age, which can be used as models. He is tearing one apart to scan in for artwork. We'll have to differentiate the reproductions from originals in some way, but we'll cross that bridge when we come to it. As for ZX-81 Kits, Stewart is still selling them at www.zebrasystems.com Al Phila, PA > This is very true of course...but (apparently I missed Al > Hartman's earlier message about this) I know of a company that can > make these keyboards. A few years ago, I designed a commercial > product which had a membrane keyboard. A few photos of it in > development (with those membrane keyboards) can be seen at: > > http://www.neurotica.com/albums/qyx/ > > I don't recall the name of the company that did the keyboards, but > I can dig it up from my notes if desired. They are here in Florida, > and I recall them having been highly capable and easy to work with. > We can probably make exact ZX81/TS1000 keyboard replicas through that > company. > > I sure wouldn't mind getting ahold of one or two of those ZX81 > kits. Will someone be making them available at some point? > > -Dave > > -- Dave McGuire Cape Coral, FL

19 years, 6 months

Paper tape supply, was Re: paper tape for GNT 4601

by aek＠bitsavers.org

> I think that if this ever happened, an alternative might very well be > to just pool together as a bunch of hobbyists and order paper tapes > custom-made? I think paper mills have catered to smaller markets in > the past... Someone from the CHM PDP-1 restoration team contacted Western Numerical Control about having at batch of fanfold made. It was going to be on the order of several thousand dollars to have the paper maker WNC knows fire up the machine to do it. At $20/box on eBay, it may be worth doing..

19 years, 6 months

Source for Ethernet AUI/TP tranceivers?

by mbbrutman-cctalk＠brutman.com

I managed to hack a Western Digital Ethernet card onto my PCjr and I'm pretty happy about it. Using a packet driver and my own UDP implementation I can get 24KB/sec off of the machine with UDP checksums, and about 39KB/sec with UDP checksums turned off. The bad news is that I have a few more of these cards but the twisted pair connector is designed for LattisNet. LattisNet is a precursor to the standard Ethernet over twisted pair and it is supposed to be close, but my hubs aren't buying it. The cards have AUI adapters and I was lucky enough to have exactly 1 CentreCom 210 which works fine. I need more though - like about 10. They're on eBay, but buying them onesy-twosy will bankrupt me on shipping. Does anybody have a few they want to unload, or know of a good seller? Also, are all AUI/TP tranceivers equal or should I be looking for something better? Thanks, Mike

19 years, 6 months

Help installing SunOS?

by pat＠computer-refuge.org

So, I'm back to trying to get my 3/180 running again. I'm trying to boot a SunOS 4.1.1 "for Sun3" install tape that I produced from images and directions that on the sun3zoo site. When I try to boot, it seems to read from the tape OK, but then it bus errors: >b xt() Boot: xt(0,0,0) Size: 507912+123920+79144 bytes Invalid Page Bus Error: Vaddr: 0E0894E4, Paddr: 000014E4, Type 0, Read, FC 5, Size 4 at 0x0000400A. The CPU is a 3/180 with 16MB of ram, an Xylogics pertec tape controller w/ Sun badged Fujitsu M24444 tape attached, and Xylogics SMD disk controller with a Fujitsu Eagle I think (aka Sun 595-1309). Anyone have any ideas what I might be doing wrong, or perhaps a working installer on 9-track tape they could copy for me? Thanks, Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

19 years, 6 months

Never assume anything on ePay

by aliensrcooluk＠yahoo.co.uk

FYI: (Scuzz got a reply from the seller saying that he'd be willing to give a refund after Scuzz had returned the item) Regards, Andrew B aliensrcooluk at yahoo.co.uk Scuzz wrote: Hi Back to square one on the Acorn...Just had the Acorn arrive and the #*$! head used the original box to ship it to me... Read my email to him: The Acorn arrived today. I feel you should send me my money back. I purchased from you a computer in a box... IN A BOX. It was the box I purchased along with the computer. I was also buying the box. I wanted the BOX. You have destroyed the most important item of the purchase. If you were not prepared to ship the box as advertised then you should not have offered the BOX for sale. As a collector the BOX is the most important part. You left it exposed to be damaged, stuck labels all over it, and destroyed it with selotape. I wasn`t interested in a busted computer I wanted the box. In over 1800 purchases on Ebay I have never actually had the item being sold destroyed by the seller before. Do you understand what you did. It was like selling a rare stamp then sticking it to the envelope. I am so angry you cannot believe. Your Auction reads..` in its original box complete with mouse ` Why do you think people buy old computers... Goodness me. I`m very very unhappy. Breaks my heart. [ end post ] And so another valuable retro item is destroyed. The search goes on... ar hum. scuzz

19 years, 6 months

Paper tape supply, was Re: paper tape for GNT 4601

by kossow＠computerhistory.org

> I think that if this ever happened, an alternative might very well be to > just pool together as a bunch of hobbyists and order paper tapes > custom-made? I think paper mills have catered to smaller markets in the > past... Someone from the CHM PDP-1 restoration team contacted Western Numerical Control about having at batch of fanfold made. It was going to be on the order of several thousand dollars to have the paper maker WNC knows fire up the machine to do it. At $20/box on eBay, it may be worth doing..

19 years, 6 months

OT: Dwarf Engineer

by mtapley＠swri.edu

At 12:00 -0600 12/2/06, cctalk-request at classiccmp.org wrote: > Okay... It's good to know you are back -- some of the most recent >deliveries of dwarfs had some samples that were out-of-tolerance. ><Grin> :-) actually, the .sig is a slam at the International Astronomical Union for demoting Pluto from "planet" to "Dwarf planet" because it "hasn't cleared its neighborhood". I'm working on a spacecraft headed for Pluto (New Horizons), so I'm peeved. ObCC: since the hardware will take more than 10 years between construction and flyby at Pluto, it'll be classic before it's ever used for its designed purpose. (Well, there is a Jupiter flyby...) This is a great opportunity to thank everyone on the classic-computer list for the accumulated wisdom I've gleaned over the years about what works and what doesn't in keeping old systems running. A lot of what I learned here went into the Longevity Plan for New Horizons. Many and diverse thanks to all! -- Mark Tapley, Dwarf Engineer (I haven't cleared my neighborhood) 210-379-4635 Dwarf Phone, 210-522-6025 Office Phone

19 years, 6 months

Is there a Prime Computer Emulator?

by Kevin＠RawFedDogs.net

Fellow Classic Computer Enthusiasts, I was rewatching "30 Years in the Tardis" last night and came across an item on the tape I had forgotten about. It's been years since I watched it, and the last time was long before I started tinkering with classic computer emulators. Anyway, while rewatching it I was thrilled to come across a commercial with the Doctor and Romana advertising a Prime computer. I found some info on the net on the Prime computer line, such as: http://www.malch.com/prime/ on the net but no mention of an emulator. I also found some manuals on BitSavers.org. Having been a Doctor Who fan for years, and with Tom Baker being my favorite Doctor, I'd love to have the opportunity to experience a computer system he endorsed. Kevin http://www.RawFedDogs.net http://www.WacoAgilityGroup.org Bruceville, TX

19 years, 6 months

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