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

by JRichardson＠softwright.co.uk

a couple of questions: does anyone have a spare 16MHz 68k CPU (or a source in the UK who may sell them - Maplins don't). There must be lots somewhere gathering dust since everyone moved to the later 68k family chips (all I have spare are the stock 8MHz versions). Lots of non-home-computer stuff seems to use them (phone exchanges, network equipment, video processing boxes etc.). also, does anyone know of anything that used 68450 chips? (they're 4-channel DMA controllers for the 68k apparently). I found a couple of these amongst the piles of junk I have and am curious as to where I might have got them - I can't think of anything I've ever stripped for parts which may have used them! :-) cheers Jules

25 years, 3 months

4
8
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New Acquisitions

by jss＠ou.edu

Well, all, I'm happy to report a few additions to my small collection. (1) DEC LA120 (DECwriter III). I bought this on eBay for a steal a few weeks back. It looks to be in decent condition. The shipper packed it very well, but neglected to wrap the LA120 in something before adding the paper-strip packing material. Thus, the thing is filled with paper strips, and I've still not taken the time to disassemble the LA120 to vaccuum/pick them all out. (2) DEC VT102. There was (and maybe still is) a lady selling what is probably a whole room of VT10xs on eBay, at the rate of one unit every week or so. I contacted her directly and asked if she had any units for which I could make a direct offer. She did, and I bought one. It was handled very poorly by UPS, as the top part of the case came off and now won't go completely back on and the case had several pieces chip off. It's not as pretty as it could be, but it *is* functional, so I'm satisfied with the purchase. In other news, I found some LA36 ribbons, LA120 ribbons, a box of teletype paper, 1981 PDP-11/04/24/34a/44/70 processor handbook, and a 1973 PDP-8/e/m/f small computer handbook, all for great prices on eBay. -- Jeffrey S. Sharp jss(a)ou.edu

25 years, 3 months

1
0
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Sears SR/2000 (Nakajima AR-30) information ?

by SUPRDAVE＠aol.com

In a message dated 01-04-27 23:26:23 EDT, you write: << My wife wants to sell this printer in a yard sale, but the collector in me is telling me to hide the printer in a safe place. Does anybody have an owners manual for this thing? I'd like to know what the 8 dip switches control. I'm willing to bet that they have the same functions as whatever printer Nakajima licensed the design from (Epson FX?) I know that it emulates an Epson of some sort, because I used it on a PCjr a long time ago. It has a Centronics parallel interface, and some sort of weirdo serial interface (Commodore?). According to Nakajima, it might work using Epson FX or IBM Proprinter III drivers. The printer is interesting to me because I've never seen another one, and Nakajimi is not a household name for printers here in the US. ;-) >> I wouldnt call it collectible, really. I have the SR3000 and it's a epson fx80 compatibile i think. It is good if you have an apple // and run GEOS. There are no drivers for the SR3000 that I had but it did support the SR2000.

25 years, 3 months

1
0
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VaxServer 3100 and VT340 terminal

by hsappleton＠sprintmail.com

I have a Vaxserver 3100 and a few vt340 available. Can they be used together and if so how? thanks for your consideration Headley

25 years, 3 months

8
22
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Super Star Trek Source

by jim＠calico.litterbox.com

Since it's come up, I've re-added the scans of the Super Star Trek sourcecode in Basic from David Ahl's "More BASIC Computer Games". There's no link from my home page, but the inside link will work. It is: http://www.litterbox.com/jim/trek/ Be advised the scans are quite large - 300dpi - to make OCR work better. -- Jim Strickland jim(a)DIESPAMMERSCUMcalico.litterbox.com ----------------------------------------------------------------------- BeOS Powered! -----------------------------------------------------------------------

25 years, 3 months

1
0
0 0

Apple //c compatible

by ken.keller＠sk.sympatico.ca

I recently got my hands on a Laser 128 Personal Computer, but no way of finding out if it works, as it's missing a power cable, or possibly an external power supply? It has DC 15V marked on the case over where the power cord is supposed to go, and 7 pins arranged in a circular pattern. I need to find either pinouts, an actual cord, or the external power supply for it. Anyone have an idea as to where I can find any of these? Thanks, Gen

25 years, 3 months

3
2
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I am interested in purchasing the Commodore 128D, please respond.

by Mike_Mossaad＠hotmail.com

25 years, 3 months

1
0
0 0

I am interested at your offer of purchasing the Commodore 128D.

by Mike_Mossaad＠hotmail.com

25 years, 3 months

1
0
0 0

Sears SR/2000 (Nakajima AR-30) information ?

by mbbrutman＠chartermi.net

My wife wants to sell this printer in a yard sale, but the collector in me is telling me to hide the printer in a safe place. Does anybody have an owners manual for this thing? I'd like to know what the 8 dip switches control. I'm willing to bet that they have the same functions as whatever printer Nakajima licensed the design from (Epson FX?) I know that it emulates an Epson of some sort, because I used it on a PCjr a long time ago. It has a Centronics parallel interface, and some sort of weirdo serial interface (Commodore?). According to Nakajima, it might work using Epson FX or IBM Proprinter III drivers. The printer is interesting to me because I've never seen another one, and Nakajimi is not a household name for printers here in the US. ;-) Thanks, Mike

25 years, 3 months

1
0
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Needed: TRS-80 Model II Keyboard & Boot Disk

by univac2＠earthlink.net

Does anyone have a spare TRS-80 Model II keyboard, boot disk, or manuals? I got one of these wonderful systems today, along with the disk expansion cabinet, but no keyboard, disks, or manuals. It seems to work fine, but without a keyboard or software, I can't do much with it. Any help is greatly appreciated!

25 years, 3 months

1
0
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Shutting down cleanly ... sync; sync; sync;

by mbbrutman＠chartermi.net

I remember hearing what is probably an urban legend about the proper way to shut down a Unix box. The console operator is supposed to enter the sync command three times by hand (and not on one command line like the subject shows it) to ensure that the disk writes got out. Now these were older boxes, and the drives may have been slow, but this surely had to be an exageration. The story has a great punchline though: sync; sync; sync three times if you want to stop me .... Mike

25 years, 3 months

1
0
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Amiga items on eBay

by foxnhare＠jps.net

> Date: Thu, 26 Apr 2001 17:47:16 -0600 (MDT) > From: "Clint Wolff (VAX collector)" <vaxman(a)qwest.net> > Subject: Re: Amiga items on eBay > > On Thu, 26 Apr 2001, Mike Ford wrote: > > > > John Foust wrote: > > > > > >Pardon the auction announcement... > > I'm curious... Has anyone here purchased something from EBay that > they wouldn't have found unless the advertisement showed up here? > > I believe that if people are going to buy something from EBay, they > already have searches set up or email announcements, and don't need > to see the announcement here. The people that HATE EBay don't want > to see the announcement because it only pisses them off. IF it is something very uncommon then I would not mind at all to see a mention on it in the group, say a MTU sound card or software for the PET of instructions for installing an MTU video board for same, I don't mind seeing ebay posts as long as thier not common items (if you search e-bay and find two similar (or more) already on auction it probably is common), like 1541 disk drives or Amiga 500s... :/ I have been known to post a "heads-up" or two on e-bay auctions I stumble upon that I find uncommon. Just because I know others are looking for such items or I appreciate that it is available and want to make sure it goes to a deserving fellow computer fan. > So, I vote for no EBay advertisements. Especially the one line > http://www.ebay.com/... kind with no supporting text. Many of > us don't read email with a HTTP degraded browser. I vote to use common sense, don't piss us off with boring auctions and DO PLEASE at least write a decent description of what the item is - beyond the link to the auction. I.E. "Commodore 900 Computer" not "Rare Commodore Computer!" > Anyone else want to weigh in on this issue? > > Clint -- 01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101 Larry Anderson - Sysop of Silicon Realms BBS (209) 754-1363 300-14.4k bps Classic Commodore pages at: http://www.jps.net/foxnhare/commodore.html 01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011

25 years, 3 months

1
0
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WTB: '040 PowerBook

by ndiablo＠diablonet.net

> Does anyone have an older '040 based Powerbook, such as a 540C or > 190CS, that they'd be willing to sell? Since my main machine is a Mac, > I'd like to move my portable work to a capable Powerbook, vice the > 486DX4/100 I have now. > > Thanks > Jeff Just to let you know in case you don't have particularly good luck on the gray market, Sun Remarketing (http://www.sunrem.com) is selling refurbished PowerBook 5300 (grayscale!) 8/500 systems for $199.00. Yes, these machines do have a reputation for being a service nightmare, but assumedly since this is a refurb system it will have been checked out, and Sun would offer some warranty on it as well. It is a PowerPC based system, so you'd end up with even a little more power than the '040 machines that you were searching for. Not a bad price on a used PowerBook, especially when compared to other resellers like Shreve. Just thought you might like the pointer. --Sean Caron (root(a)diablonet.net) | http://www.diablonet.net

25 years, 3 months

2
1
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apple ///

by witchy＠vorbis.demon.co.uk

> > Date: Fri, 27 Apr 2001 01:33:50 -0700 (PDT) > From: steve <tosteve(a)yahoo.com> > Subject: Re: Apple /// - Mac Port! > > Hi Adrian, > > You have a very slim chance on the Apple III, numerous > people have already asked for it. No worries :) > I am asking $50.00 for it, not including shipping. > Sorry, It doesn't have a carrying case. Eep - too much considering I can get one for less than that over here. Never mind, it was worth asking! > Are you in the UK? Yup! And given my recent redundancy I'm liable to stay here for a while yet..... cheers adrian/witchy www.binarydinosaurs.co.uk - the Online Computer Museum 0:OK, 0:1

25 years, 3 months

1
0
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TRS-80 question

by rdd＠smart.net

Greetings, A while back, I purchased a TRS-80 Model III with 48K of memory, but I can't access the BASIC interpreter... that is, if it has one as I was thinking it did. Do I need to use a boot floppy in order to do anything with this machine? Also, weren't some TRS-80 systems able to use a hard drive? Funny thing, I still have the book that I purchased from Radio Shack about 20 years ago (doesn't seem possible that it's been that long) so that I could use a TRS-80 in a computer lab in college: _BASIC Computer Language: It's easier than you think!_. Five dollars and ninety five cents... wow, try buying a new computer-related book at that price now! -- Copyright (C) 2001 R. D. Davis The difference between humans & other animals: All Rights Reserved an unnatural belief that we're above Nature & rdd(a)perqlogic.com 410-744-4900 her other creatures, using dogma to justify such http://www.perqlogic.com/rdd beliefs and to justify much human cruelty.

25 years, 3 months

9
14
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Listing for AppleII StarTrek

by pete＠dunnington.u-net.com

On Apr 27, 8:53, Cini, Richard wrote: > I looked at home, and I don;t have any of Ahl's books. I do have a > version of StarTrek that was for TinyBasic, which I could use. I was > interested in the version that came with the 16k Apple ][ because it seemed > to make use of some of the graphics capabilities. The version is David Ahl's book isn't Apple-oriented, though it must be close to the Apple version (which, if I recall correctly, was in Integer BASIC). I do have a copy of that somewhere. However, at the moment my machines are strewn (I think that's about the most descriptive word I could use!) all over the house and workshop as I'm in the final stages of "sorting out the junk". I doubt if the Disk ]['s are even in the same room as the Apple ][ or //e, and i'm sure the floppies aren't. Nevertheless, if you care to remind me in a week or two's time, I should be able to dig it out and kermit a copy across to something net-enabled for you. [5 mins later] Aha, I've found the disks. What you're looking for is called "APPLE-TREK", and it's 53 blocks of INTEGER BASIC. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

1
0
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TRS-80 question

by fmc＠reanimators.org

ard(a)p850ug1.demon.co.uk (Tony Duell) wrote: > Incidentally, does anyone know what's happened to Tim Mann's web pages? > They were an excellent source of TRS-80 software. They still are, but now you need to look for them at http://www.tim-mann.org/trs80.html . -Frank McConnell

25 years, 3 months

1
0
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ebay: Victor 9000 PC [ad]

by ss＠allegro.com

Hi, I'm trying two things: - mentioning that I've got a Victor 9000 PC up on eBay http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1232394633 - showing people that if we preface eBay announcements with "ebay:", the people who don't want to read such things can easily filter them out. I know that won't make everyone happy ... particularly people who feel that eBay is evil :) However, I tend to try local giveaways first. Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler

25 years, 3 months

1
0
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Listing for AppleII StarTrek

by RCini＠congressfinancial.com

Jim: I looked at home, and I don;t have any of Ahl's books. I do have a version of StarTrek that was for TinyBasic, which I could use. I was interested in the version that came with the 16k Apple ][ because it seemed to make use of some of the graphics capabilities. Rich -----Original Message----- From: Jim Strickland [mailto:jim@calico.litterbox.com] Sent: Thursday, April 26, 2001 3:05 PM To: classiccmp(a)classiccmp.org Subject: Re: Listing for AppleII StarTrek I have it in David Aho's book "More Basic Computer Games". I had a scanned image of each page of the listing on my web page for quite a while, but I removed it. If nobody else gets back to you let me know and I'll dig up the images or scan 'em again. > > Hello, all: > > Does anyone have the listing for or a disk image of the 16k StarTrek > for the Apple II? > > Rich > -- Jim Strickland jim(a)DIESPAMMERSCUMcalico.litterbox.com ----------------------------------------------------------------------- BeOS Powered! -----------------------------------------------------------------------

25 years, 3 months

4
3
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calling Shawn Rutledge

by mrbill＠mrbill.net

Shawn - please contact me off-list and send your postal address. Bill -- Bill Bradford mrbill(a)mrbill.net Austin, TX

25 years, 3 months

1
0
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A few PDP11 questions and FREE Cipher tape drive

by fernande＠internet1.net

Hello, Before I continue with my Vax 3400, I want to get my PDP11 put together, physically. I have a few things I would like to find, and a few questions. My 11 came with a 3 4-port serial cards. They are M8043 boards. I can't see myself using that many serial ports. Does anybody have the little blank steel plates to put in a BA23 chassis so I can remove the plates that have the 4 db25 connectors? Also, I need the plate that fits into the space below the serial ports. It looks to be slightly larger than a centronics 50 SCSI connector. Would anybody have the dip switch and jumper settings for a M8190-AE, that's a KDJ11-B from a 73 or 83. My 11 was upgraded from a 53. How about memory? If I use the memory that came with it, and do a "map" it tells me the memory is parity. I bought a few surplus boards and one appears to be ECC memory. I don't know anything about ECC, is it better than parity? I have a 2-meg ECC board and 2.5 megs worth of parity memory between 2 boards. One of my parity boards says "Mos RAM" What is that? It is a M8067 LJ. I am thinking that I would like to keep the chassis out of the tower. Does anybody have a spare plastic bezel for a rackmount setup. I don't have a rack, but it would take up less room if I keep the tower in storage. What to call this thing? It has the cpu board from an 11/83, but it doesn't have the PMI memory of an 83. I would like to upgrade the little square badge to reflect its current config. Also, does anybody want a big Cipher tape drive? I also have a Emulex TCO2 (I think that's it) to drive it, although I don't have the cables to hook the two together. It would be free for the taking. I don't think I want to ship it. Chad Fernandez Michigan, USA

25 years, 3 months

3
7
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Shutting down cleanly ... sync; sync; sync;

by guntis＠cyberstate.infi.net

>> In fact... I seem to remember that the Ultrix-11 installation >> manual specified this action during the installation process. >> No urban legend.. I remember doing it on a home -11... >> sync; sync; sync; halt >Years ago (so far back in another year it will be ontopic), this was the >correct way to shutdown Linux as well. And years before that - SCO XENIX and then SYSTEM V Unix - we were told the same thing, though this way sync sync sync shutdown / halt (or whatever the command was) Delurking here for a bit. My sole collectibles are TI 990's and the TI PC (the first computer I owned). Most haven't been fired up in a while. Was once a field service tech for TI way back when. Still have a good bit of documentation and half-forgotten knowledge of those machines. I also know a much smaller bit about the TI Unix and LISP boxes. FWIW. Guntis.

25 years, 3 months

1
0
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TrackStar E usage - Update

by RCini＠congressfinancial.com

Hello, all: I'm muddling through this a bit. I found an old CGA monitor up in the attic that I attached to the TrackStar. I'm able to boot the TS into Integer Basic successfully. I still don't know if the composite output works since I think that there is a problem with the Apple Composite monitor I have (it displays only a yellow background). I think that the updated FAQ mentions that it's a video level problem. Using the TS utilities, I was able to create a DOS3.3 disk image in the TrackStar format. the TS will not "boot" that image, nor will it boot the image included with the drivers. I still can't get it to boot. I just checked the Apple2 FAQ and the TrackStar page was updated about 1 month ago. It mentions that some TS disk images are available from the GSWorldview archive, a link which doesn't work. Does anyone have a link to the working archive? As a result of this experimentation, I think that I'm going to do a TrackStar Web page this weekend. Rich

25 years, 3 months

1
0
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Motorola 68000-16 and 68450 chips...

by JRichardson＠softwright.co.uk

>> also, does anyone know of anything that used 68450 chips? (they're 4-channel >> DMA controllers for the 68k apparently). I found a couple of these amongst >> the piles of junk I have and am curious as to where I might have got them - > > In a 64 pin DIL package or a 68 pin (?) PGA package? 64-pin DIL. > I've seen the former in sevaral machines, including the Torch XXX. The > latter was used in the PERQ3a. Although if you stripped either of those > machines for parts, I would feel justified in stripping _you_ for parts :-) hmm, strip away :-) It's possible... I never had a complete XXX system, but Torch used to be my local source of PC bits (around 1990 or so) and I knew the guys there via a friend of mine. I remember piles of XXX machines on the shelves gathering dust, not sure what happened to those (are Torch still around? Unlikely). Occasionally I used to get other odds and ends from there (I have a set of XXX floppies someplace) so may have had a dead XXX system board or something >from them which I pulled the 68450's from. I used to work for a place up in Cambridge that was primarily a PC repair shop, but they used to sell anything computer-related so long as it was mainstream-ish (ie. lots of Amstrads etc. too). Occasionally we'd get oddities in, which is where a couple of my bigger systems have come from. The boss always wanted such machines stripped for useful parts (typically just memory and disks, workstation monitors if they were there) and then the rest was scrapped :-( Unfortunately he always wanted a ridiculous amount of money for any of these systems complete, otherwise I would have saved whatever I could (anything with SCSI disks seemed to automatically command a tenfold price increase!). I have a vague memory of at least one XXX system which passed through there, an IMP system, several big Apricot towers, and some Acorn Unix system of some sort. It's possible I scavenged the 68450's from the bin awaiting disposal, although I have no idea what I thought I was going to do with them :) I seem to remember a big white cabinet on wheels (3' high, 18" wide by maybe 4' deep) which we used to ride around the warehouse on :-) No idea what the innards of it were though! Oh, for some reason video memory was never saved - if we had a dead PC SVGA card it just got thrown out as-is. I had a nice little scam going pulling memory off these dead boards and selling it to people wanting to upgrade their PC video cards from 512KB to 1MB.... the video memory was usually intact even if the boards were toast. cheers Jules

25 years, 3 months

3
2
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Motorola 68000-16 and 68450 chips...

by JRichardson＠softwright.co.uk

>> does anyone have a spare 16MHz 68k CPU... > > Was the MC68000-12 rated to 16Mhz, or did people just run it that fast? I > remember it was an issue for people who tried to clock-double their A500s. how did you know? :-) I have an old A500 which it'd be nice to increase the speed of, add an IDE disk to it, increase the memory etc. It had been left outside and all the metal screening's gone pretty rusty, hence it makes a nice project machine! The information I've seen suggests that SGS-Thompson parts were 12MHz and Motorola-badged ones would run at 16 (even if they were badged as 12's). If I can find one of the chips I'll find out :-) > I've seen at least one Amiga peripheral that used a Motorola DMA chip (forget > if it was 2-channel or 4-channel). Microbotics SCSI? Software Results had > a WAN router box that was never released, that used a 68450 per serial card > for high-performance serial (vs the non-DMA 8-port low performance card). I > doubt if you got it from that - I have the boxes (and 8-layer boards!) up > in the attic. ISTR they used 600 RPM 3.5" drives, too. Nope, none of those. I had all of the boards from a phone exchange at one point (that was a *lot* of silicon) and pulled many Z80 + support chips off those, but don't remember there being any 68k-family stuff. Strange... cheers Jules

25 years, 3 months

1
0
0 0

Apple ///

by witchy＠vorbis.demon.co.uk

Hi Steve, How much would you be after for the Apple ///? I understand shipping might be expensive :) And the Mac portable for that matter..... > Date: Tue, 24 Apr 2001 14:55:03 -0700 (PDT) > From: steve <tosteve(a)yahoo.com> > Subject: Computers for swap or sell > > Hi, > > I have some extra systems, see if there's anything > that you like! > > 1.Apple IIc with monitor (small green screen) > 2.Apple IIc Plus > 3.Apple III with Monitor III > > 4.Macintosh Portable (model 5120) cheers adrian/witchy www.binarydinosaurs.co.uk - the Online Computer Museum 0:OK, 0:1

25 years, 3 months

2
1
0 0

DejaNews... Holy Cow!!!

by healyzh＠aracnet.com

Wow, I just did a search at http://groups.google.com and they've now got all of the DejaNews archives back online! It was actually a problem, I was expecting to only pull up a couple hits, and I got a LOT! Just thought I'd share the good news! Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

25 years, 3 months

1
0
0 0

MicroVAX 3100 booting question...

by pete＠dunnington.u-net.com

On Apr 26, 22:50, Iggy Drougge wrote: > >> I have no respect for a system which needs to be pampered before one > >> may hit the power switch, so nowadays, I just flick the switch when > >> I feel like it, be the system Windows, Mac or UNIX. Haven't had the > >> opportunity with VMS yet. =) I can do that with my SGIs running UNIX, because they have soft power that actually works. The OS intercepts the sinal from the switch and does a clean shutdown. (Unlike the Sun Ultras I've used, where the soft power so rarely works when we want it to, that we've often ended up yanking the power cord because nothing happens). > NetBSD and OpenBSD boxes seem to boot fine, albeit slowly. Because they have to check and sometimes fix the disk. If shut down clean, they don't have to do that. > So what if they're writing to disk? If they have proper file systems that > won't really matter. Mind you, at least I always check that the drive lights > aren't on. Having a proper file system won't prevent corruption at some level. What do you mean by "proper", anyway? Even a journaling file system like XFS can't preserve data that was being written when it was interrupted, and you WILL get some data corruption, even if it doesn't corrupt the structure of the disk (making a bad block). Just because some systems silently deal with most problems next time they start up doesn't mean you've not done some damage. One day it won't be repairable without intervention. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 3 months

1
0
0 0

Rapport PCjr expansion chassis

by mbbrutman＠chartermi.net

The PCjr in question with the expanded memory is only counting up to 128 when it POSTs, so I am pretty sure that the expanded memory isn't getting any power at all. If the memory would appear during the POST, my life would be wonderful. My other extended PCjrs POST past 128KB. So are there any Rapport Drive II owners out there that want to tell me what the external power supply looks like? Does it output the same as the PCjr power brick, or is it a different beast? The Rapport looks like a pretty neat device. The standard PCjr diskette controller can only support one drive. They use the standard controller, but they "borrow" some of the lines on the floppy cable and run it through some additional logic to add two drive support. It also looks like it has a parallel port and a clock/calendar on it. It's also got a switch labelled "PC/PCjr" - it either disables all of the addon crap, or it adds a feature that I'm unaware of. Any guesses? Mike

25 years, 3 months

1
0
0 0

TrackStar E usage

by rcini＠optonline.net

Hello, all: Well, I've finally gotten around to playing with the Diamond TrackStar board. Has anyone gotten this to work successfully? I've downloaded all info that I can find relating to the TS, but it only includes the "hardware" portion of the install manual. Does anyone have the "software" portion of the manual? Anyway, here's where I am so far: The board's installed and the software that I have seems to recognize the board and allow me to do certain things, like configuring the drive slots and assigning PC ports to the virtual Apple ports. I was also able to create a 10mb ProDOS volume on the C drive of this test system (a 486/66 with 16mb of RAM). I have a genuine Apple ][ floppy drive connected to the TS. I can "boot" the Apple ][ drive, but it does not seem to recognize the disk. I've tried ProDOS8 and DOS 3.3 disks, neither one of which works. I did have the cable upside down initially, and then reversed it. The drive light comes on at the right time, so I'm hoping that I did not trash the drive. The TS has a composite video output, so I figure that I can connect it to the Apple Color monitor I use for the ][+ I have. All I get is yellow streaks. I don't have a generic 9-pin RGB monitor to try the direct video output. I also noticed that the TS has an empty 16-pin socket at position U63. Since I have an incomplete manual, this may be for Apple Paddles or something else. Any info on this? As always, any information is greatly appreciated. Rich Rich Cini Collector of Classic Computers Build Master for the Altair32 Emulator Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /*****************************************/

25 years, 3 months

1
0
0 0

TRS-80 Mod 12 for sale

by nerdware＠laidbak.com

Hi, gang. A couple of years ago, I dove headlong into the old computer collecting thing, thinking naively that I was doing something unique. I was going to build a great online museum, and have all these neat machines displayed thoughout my house and possibly at the local university. Then I discovered this list, and realized that not only was I not alone in my pursuits, but that I was also small potatoes compared to some of you. Plus, the collection started to take over the basement, as they are wont to do. I also design theatrical sound effects, and I'm trying to build a small project studio here in the basement. That endeavour has taken over most of my free time. So, I started paring down the collection to a few choice pieces plus those with sentimental value to me. I did a entire display at the local library of Tandy equipment last year. I realized, while setting it up and subsequently taking it down, that I should keep the Model 1, the 100 & 200, the Pocket, and the Micro CoCo and jettison the rest of the Tandy collection. Rather than put this sucker on ebay, I thought I'd give first shot to my extended cyberfamily here on the list. I'm going to start with a Model 12, with two 8" floppy drives, keyboard, and two external 20mb hard drives. Don't know how well it works, but I was told that it booted last time it was powered up. I don't have any software other than what's loaded on the hd's. I've realized that I just don't have the time and no longer have the inclination to mess with all of this stuff, so it should go to someone who does. As I said, this is going in the kitty to finance the purchase of a synth or two for the studio, so I would like to get something out of it. This one wasn't a freebie for me. Also, if you know what one is, you know how bulky and heavy they are, so I would like to limit it to pickup in the Northwest Indiana/Chicago area. Valparaiso is about halfway between Chicago and South Bend, Indiana. Actually, I don't care where you live. If you're willing to drive to Valpo, that's fine with me. If you have problems with this email address, as my provider filters based on ORBS and sometimes things get stuck, use my work address pbraun(a)olivellp.com. I'll take the best offer as of Tuesday May 1st at midnight. Depending on how this goes, I have more Tandy pieces that I'll put up here first instead of ebay. I also have a mess of Bytes from the early 80's on that I'll offer as soon as I get 'em sorted, hopefully this weekend. Thanks. Paul Braun WD9GCO Cygnus Productions nerdware_nospam(a)laidbak.com "A computer without a Microsoft operating system is like a dog without a bunch of bricks tied to its head."

25 years, 3 months

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MicroVAX 3100 booting... (now WinNT shutdown)

by kees.stravers＠iae.nl

On 2001-04-26 classiccmp(a)classiccmp.org said to kees.stravers(a)iae.nl >What!? NT is out there!? >That ISS crew shouldn't have NT up there. It is not rated for >that kind of reliablity. Down here, fine, but not up there with >everything depending on that thing. The Windows computers in the ISS are not performing critical tasks. The tasks that matter are performed by custom built machines with their own real time os. The Windows machines only look at what the real computers are doing. Kees. -- Kees Stravers - Geldrop, The Netherlands - kees.stravers(a)iae.nl http://www.iae.nl/users/pb0aia/ My home page (old computers,music,photography) http://www.vaxarchive.org/ Info on old DEC VAX computers (Mirrors: http://vaxarchive.khubla.com/ and http://vaxarchive.sevensages.org/) Net-Tamer V 1.08.1 - Registered

25 years, 3 months

2
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se/30 disk weirdness

by red＠bears.org

I brought home an external FDHD for my SE/30 last night, to facilitate retrocomputing tasks. Plugged it in, switched on the Mac, tested it out, shut the Mac down, and unplugged the disk. Now, when the external drive is unplugged, the system somehow still thinks it's there. I get a disk icon with an "x" in it at boot as it tries to boot from this external drive which is not there and finds (surprise!) no system folder on the disk. The system then goes on to boot more-or-less normally from the internal SCSI disk. Once finder starts loading, I get a dialog box that (depending) says one of two things: "This disk cannot be read by this Macintosh. (Eject) (Initialize)" with the icon indicating the (non-present) external floppy. ~or~ "Initialization faild: disk is locked. (OK)" Dismissing these dialogs result in processing resuming normally for a second or two, and then another identical dialog being thrown up. Repeat ad infinitum, et ad nauseam. The internal disk drive continues to work normally (within the above constraints). As soon as I reconnect the external disk drive, everything is happy again. As soon as I disconnect it... bang. Nose demons. I am utterly baffled. What's wrong? How do I fix it? ok r.

25 years, 3 months

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Motorola 68000-16 and 68450 chips...

by aknight＠mindspring.com

Ethan Dicks wrote: >Was the MC68000-12 rated to 16Mhz, or did people just run >it that fast? I remember it was an issue for people who >tried to clock-double their A500s. Motorola made a version of their MC68HC000 that ran at 16MHz. Back in the late 80's I was doing processor design for Nortel switching equipment and we had some applications that were written for the 68000 that would have taken too much work to convert software over for the 68020 (a lot of our stuff ran in supervisor mode, not user mode). SGS-Thompson was a licensee for the 68K family, and was the first company that produced a 16 MHz 68000. I think theirs was NMOS, not CMOS (it sure got warm). One day the Motorola guys brought in one of their sales managers to try do drum up business for their 68020 and I showed them the SGS-T part and asked them if they had anything like that. The answer was "we'll get back to you on that", which was then followed up with "you can use our 12 MHz 68HC000, run it at 16 MHz at room temperature for development, and soon we can provide screened parts that will run at 16 MHz". Eventually they did provide MC68HC000-16 parts. Regards, Alex The Calculator Museum Web Page http://www.calcmuseum.com

25 years, 3 months

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MicroVAX 3100 booting question...

by kees.stravers＠iae.nl

On 2001-04-26 classiccmp(a)classiccmp.org said >I respect Apollo most for their solution. >On the early models we had they had a soft shutdown >switch right where the power switch was. You hit that >one and it does the preliminaries and then off. >>>>One button<<<, just the way it should be I think. The AT&T 3B2 does this too. Very nice indeed. I wish more machines had this feature. My old DEC 486 laptop did it even better: you hit the switch, it goes off instantly, and when you hit the switch again it came right back up where it was, no rebooting, no scratching on the disk, just instant on. Amazing. Kees. -- Kees Stravers - Geldrop, The Netherlands - kees.stravers(a)iae.nl http://www.iae.nl/users/pb0aia/ My home page (old computers,music,photography) http://www.vaxarchive.org/ Info on old DEC VAX computers (Mirrors: http://vaxarchive.khubla.com/ and http://vaxarchive.sevensages.org/) Net-Tamer V 1.08.1 - Registered

25 years, 3 months

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Listing for AppleII StarTrek

by RCini＠congressfinancial.com

Hello, all: Does anyone have the listing for or a disk image of the 16k StarTrek for the Apple II? Rich

25 years, 3 months

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IBM 7171 Terminal Controllers

by ip500＠home.com

If anyone is interested ... there are a number of IBM 7171 that will be coming available in the near future. I would expect the price to be in the $100 range but as they are IBM .. they're probably HUGE and BLUE. Any interest I can find out more info and pass it along privately. Craig Located in Virginia, Roanoke to be exact.

25 years, 3 months

2
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Longest running user group in history?

by mcguire＠neurotica.com

On April 19, Mark Gregory wrote: > Last night, I attended the 175th monthly meeting of the Amiga Users of > Calgary. That didn't seem like much until I did the math; that's 14.5 years > of meetings (!), and probably more given that for the past few years > they've taken two of the summer months off. It got me wondering which users > group holds the record for longest continuous operation, where members > actually attend meetings at a regular interval. I know that the Toronto PET > Users Group, which is still active, has been running since 1978. > Interestingly, their Website (http://www.icomm.ca/tpug/) says they're the > _second_ oldest Commodore club. Impressive! > I thought this might make a fun thread. So who's older? Are there any older > clubs still active? And isn't it sad that Wintel computers are so generic > and boring that people don't form user's groups anymore? DECUS? -Dave McGuire

25 years, 3 months

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PC-Jr (was: Repair techniques ... I/O pins and power supplies

by SUPRDAVE＠aol.com

In a message dated 4/25/01 6:42:50 PM Eastern Daylight Time, cisin(a)xenosoft.com writes: << > if it's the IBM sidecar that plugs in, the system should detect it > automagically. I have one on my hard drive equipped jr that was modded so the > computer has 640k total. Ny recollection was that the original message specified that it was NOT the IBM sidecar. >> I would still think any memory expansion option would be counted up at POST because the computer can boot with carts installed rather than floppy and also, the standard pcjr model has no disk drives! The enhanced model that everyone seems to have includes one floppy drive. -- DB Young Team OS/2 old computers, hot rod pinto and more at: www.nothingtodo.org

25 years, 3 months

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AS400 9404 /s

by KenzieM＠sympatico.ca

Also found this deal today 100$ takes all 4-6 AS400 9404 models about 35+ IBM 3164 terminals with keyboards, dust screens for terminals, network blocks etc. Tested one of the 9404 and powers up fine... others untested... they do include drives, tape units, cpu's, memory etc !!!!

25 years, 3 months

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not a DEC video cable?

by red＠bears.org

Yesterday, I picked up what I thought was a VAXstation colour video cable at a recyclers. I had nefarious reasons for doing so, and ended up being disappointed to find out it didn't work with my VAXstation (3100m76, GPX). What other systems used DA15 (socket) <-> 3 BNC video cables that also featured mid-cable breakout for keyboard/mouse? The give-away should've been that the keyboard connector is not an RJ-style jack. Instead, it has mini-DIN6 (PS/2-style) keyboard and mouse connectors. ok r.

25 years, 4 months

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What's DEC doing at Data General site...?

by bkr＠WildHareComputers.com

G'day DEC'heads- While updating our Data General-oriented web site I've added a new DEC photo section to the web site just for nostalgia sake: http://www.simulogics.com/nostalgia/DEC/dec.htm I've also updated the list of of our scanned DG docs at: http://www.simulogics.com/archives/manuals/DG.htm so you can see what is currently available upon request. More vendor docs can be found by tracking down the appriate vendor selection at: http://www.simulogics.com/archives/manuals/manuals.htm This site is being extensively updated over the next week, and comments, ridicule, questions and suggestions always welcomed - (and I am still interested in obtaining an 8/E, 8/L or 8/I if anybody has a working system seeking a caring home) Bruce Ray bkr(a)SimuLogics.com -or- bkr(a)WildHareComputers.com

25 years, 4 months

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commodore stuff...

by foxnhare＠jps.net

On what a 8050 drive can work on Every PET/CBM except the ones with the original ROMs, and the CBM II series (B128, P500, B600, 700, etc.) The 8050 is a dual 1/2 megabyte (per floppy) drive using quad density (96tpi) single sided disks (not to be confused with high density, I have read double density disks can be used in a pinch), usualy more common to find 8050 software disks used in the CBM business line or the CBM-II (B1-28) line then in the mass consumer PETs. Unfortunaltely it cannot read 1541 or 2040/4040/2031 disks. But I have heard you can read a half of a 8250 disk with it (8250 is a dual sided quad density drive) see also: http://www.jps.net/foxnhare/petfaq.html On the cable... > Date: Tue, 24 Apr 2001 09:22:00 -0500 > From: "Russ Blakeman" <rhblake(a)bigfoot.com> > Subject: Hmm...what the heck kind of cable is this???? > > In a batch of power adapters and cables I found a stereotypical Commodore > style beige serial type cable, having the DIN plug on the end - but only on > one end. The other end is a 25 pin female d-sub. I know it's factory as the > housing for the 25 pin has the C= emblem molded into it. ... > Date: Tue, 24 Apr 2001 12:04:13 -0500 > From: "Russ Blakeman" <rhblake(a)bigfoot.com> > Subject: RE: Hmm...what the heck kind of cable is this???? > > Okay I looked quick and "assumed" it was a 25, might be a 23...I completely > forgot that it might be video. I guess they are made strictly for Commodore > brand monitors... 23 pin d-sub mini to DIN is a 1084 monitor (DIN) to Amiga (23 pin d-sub mini) cable. For that monitor to an 8-bit it would have been DIN to DIN (not sure of the monitor configuration though). Commodore for a short time used these nasty DIN connectors on their 1084 monitors which were non standard... (probably got a deal on DIN jacks, eh?) I belive Magnavox did release some of thier branded monitors with that connetor too... :/ -- 01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101 Larry Anderson - Sysop of Silicon Realms BBS (209) 754-1363 300-14.4k bps Classic Commodore pages at: http://www.jps.net/foxnhare/commodore.html 01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011

25 years, 4 months

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PC-Jr (was: Repair techniques ... I/O pins and power supplies

by SUPRDAVE＠aol.com

In a message dated 4/25/01 4:59:17 PM Eastern Daylight Time, cisin(a)xenosoft.com writes: << > > supply is only about 33 watts. The expansion unit has extra > > memory in it that is not being seen by the system unit; I > > suspect that is because the +5 output on the power supply > > is reading about 1.8 volts. (According to a digital On some expansion memory units for the PC-Jr the extra memory is NOT seen by the system until certain "special" software is run. >> if it's the IBM sidecar that plugs in, the system should detect it automagically. I have one on my hard drive equipped jr that was modded so the computer has 640k total. -- DB Young Team OS/2 old computers, hot rod pinto and more at: www.nothingtodo.org

25 years, 4 months

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Archaeology Article

by jrkeys＠concentric.net

Picked the issue at the news stand today that had the 2 page article on classic computers staring our own Sellam Ismail. It was fun reading and now I have to see this former car plant that serves as your warehouse. I have to get me rich uncle so that I can get that kind of space. Articles like this are great for our collecting efforts as more and more people learn about they seek us out to donate their old computers. Keep up the good work.

25 years, 4 months

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Free: PDP parts & VMS "Orange Wall" - Austin, TX

by jos.mar＠bluewin.ch

-----Original Message----- From: Bill Bradford <mrbill(a)mrbill.net> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Monday, April 23, 2001 11:38 PM Subject: Free: PDP parts & VMS "Orange Wall" - Austin, TX > >http://www.pdp11.org/pics/eight-inch-floppys-front.jpg >http://www.pdp11.org/pics/eight-inch-floppys-switches.jpg > >Bill > Does the drive come with or without the cat ? Jos Dreesen

25 years, 4 months

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DEC RRD40 CDROM Drives

by dittman＠dittman.net

I recently acquired some old DEC equipment that that two RRD40 drives with SCSI adapters. I quickly replaced them with some real SCSI CDROM drives. Now, I enjoy classic equipment and like to see it preserved, but I draw the line on the RRD40 drives. They deserve to die. However, there may be some people that may actually want these oddball drives and SCSI adapters, so if you want them, they are yours. All I ask is that you pay for shipping, and I really only want to ship these in the US. There are no caddies available, and if you aren't familiar with the RRD40 drives they don't use the standard caddies. Also, one of the drives has a CD in it, and when I booted the unit before removing the drives the CD was labeled as an OpenVMS V7.1 doc disk. However, I don't know if that is accurate, since I didn't bother taking a look at the contents. I also don't know if the CD or drive will survive shipping with the CD in place. Also, the SCSI adapters are only for the RRD40 drives and I've removed the three ICs that are useful to me from each board. So, if you want them let me know by Friday, or I'll just trash them, without honor, and without dignity. Can you guess that I've had to install a VMS upgrade with an RRD40 drive and had to swap several CDs to load layered products with only two caddies? I really, really, really don't like RRD40 drives. -- Eric Dittman dittman(a)dittman.net

25 years, 4 months

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MicroMation system in San Francisco area available.

by ndiablo＠diablonet.net

Subject: Re: MicroMation Date: Wed, 25 Apr 2001 18:02:44 -0700 From: Christopher Menke <chrismenke(a)excite.com> To: ndiablo(a)diablonet.net References: 1 Hi everyone! I was kindly offered this computer system, but it is extremely out of my range. He said it would be alright if I forwarded it to the list, so here goes. Contact address and caveats below. >Sean, >I was hoping that Diable might have been the Diablo valley here in the San >Francisco area. I think these machins would be quite expensive to ship ,as >each box is 50lbs+ and each terminal is likely 50lbs as well. >You may forward my offer to whomever, as long as the chrismenke(a)excite.com >address is used, and you throw a caveat in there that I would not like to >be contacted regarding anything else. >As to your Sun stuff, I too am using an IPC as my household server, but I'm >looking for something to play with on my desktop. >Cheers, >Chris >Christopher Menke wrote: >> >> I have a large Micromation computer, which I believe consists of a CPU, >> 10 MB 12 inch platter hard drive, and a ancillary box with two 8 inch >> floppies. Also included are two TeleVideo 900 terminals. >> >> Yours for the shipping, or the pickup, or trade for old Sun stuff if you >> wanna get rid of any. >> >> Cheers, >> Chris > >Hi! Thanks for your very gracious offer. Just out of curiousity, where >are you located? Depending on if you are nearby, I may be interested, >but if you are outside of the southwest Michigan area it would probably >be prohibitively expensive to ship the entire system. > >I've got some older Sun equipment around, nothing spectacular, however. >Primarily old SPARCstation IPC systems that actually would run fine >given hard drives, some RAM, and a live IDPROM. Lots of spare CG3 >SBus graphics cards too, but those are probably of limited interest. > >If you are out of my range, would it be alright if I were to forward >your offer to the classic computer collector's mailing list? If I am >not capable of finding a home for the system myself, I'm sure there >would be someone who would! > >Thanks again, > >--Sean Caron (root(a)diablonet.net) | http://www.diablonet.net --Sean Caron (root(a)diablonet.net) | http://www.diablonet.net

25 years, 4 months

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Repair techniques ... I/O pins and power supplies

by mbbrutman＠chartermi.net

I've always wanted a PCjr with an expansion chassis on it, but they were pretty expensive, and I got by without one. 15 years later I have found one on Ebay and bought it, but alas it's not a happy ending. There are at least two serious problems that I need to fix. The first problem is a broken I/O pin on the expansion bus that comes off the motherboard. The pin is in a 60 pin rectangular connector, and spacing is tight. he broken pin is a data line pin, so if I don't fix it, I can't add any sidecars to the machine. How does one go about replacing a pin? Is it possible? Or am I going to have to desolder the connector and try to replace the entire connector? (And I'm not good with a soldering iron ... I can't even tin wires.) The second problem looks to be a bad power supply. The expansion unit has it's own power supply because the PCjr power supply is only about 33 watts. The expansion unit has extra memory in it that is not being seen by the system unit; I suspect that is because the +5 output on the power supply is reading about 1.8 volts. (According to a digital multimeter.) I measured this with everything connected, so there certainly is enough load. (I don't think that this is even a switching power supply, so the load issue is moot.) The power supply has a "pick" line that is probably activated from the main unit, so that it doesn't have to have an independent power switch. How does such a pick line work? Is there a way to fool it on? What does it use for a ground? (I didn't see one clearly labeled that belonged to the pick line ... perhaps it was the same ground as the +5v line?) How can I confirm that this power supply is truly toast? And it is, then how do I replace it? (I'm willing to scab in a reasonable substitute - it probably can't be a switching supply though because there won't be enough load - it's probably only 512KB of chips on board. The expansion unit is a Rapport if that helps anybody. Thanks, Mike

25 years, 4 months

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VAX 6000 3-phase conversion (was: Re: Three Phase)

by gunther＠aurora.regenstrief.org

Robert, you are awesome! I would very much appreciate if you took some pictures. I did some more experiment today and had quite strange results. Now that I understand that the two black and the brown wires are the three phases and the blue is null, I hooked up brown with P1, the two black ones with P2 and blue with null. When I plugged in, I saw the power line controll lights 2 and 3 flash up real quick and then they were out. When I turned on the main power (T-switch) I could measure 110 V at the auxiliary receptacles as it should be. However, I could not find any 220 V at the round plug. I tried two variants: with leaving protective ground open or closing it at N (I know, this was only temporary ...) When I had protective GND on N I would see the PL1 controll light flash tooo. But I never got any 220 V between any of the pins on the round connector. Now this may be because I tried with the power unit from the VAX that has some (unknown) power problems. > The cable that connects the round > connector to the `power & logic box' has only six wires, two from each > phase. There are a number of other connections available on the round > connector, which leads me to believe it's a standard part for anumber of > different power schemes. >From the inside it looks as if each lead goes to at least two of those pins. This would seem reasonable as the pins themselves look pretty small for 800 W full power ... > Here's the fun part! Inside the `power & logic box', all three phases ( > no neutral!) follow a simple path thru a 20A 600V fuse, and then into a > full-wave bridge rectifier, DEC part number 11-26520-01. A couple of MOVs > offer some protection from transients, and yet more filtering. > > Now, the good news: > > It should be possible to simply apply 220 volt single phase (common dryer > power) to any two of the hot wires on the three phase plug! No neutral is > needed for the computer itself, altho any accessories plugged into the > lower power-distribution box will need one. These pose a small problem in > that they are connected to different hots to more evenly balance the load > on the three phase supply, but worst case they can be easily tied on to > one phase inside the box-- best case don't use them! > > I'll be making a cable to replace the factory assembly, and rewireing the > distribution box to single phase, I believe. It should be 100% reversable. My plan is to buy a receptacle box for the original power plug and wire that box near my extra circuit-breaker box in the laundry / computer room in the basement. Given that the stange behavior of the power control lights are explained and my mistake in measuring the round connector's voltage output is discovered, is there anything to rewire inside the AC power box? I wonder, are we the first ones to fire up their 6000 in their private dwellings? BTW: has anyone noticed major interference with radios or TVs (the label on the machine talks about it ...) regards -Gunther

25 years, 4 months

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Stag PP39 Documentation Query

by timjarrett＠mcmurdo.co.uk

Does anyone have a technical / service manual for a Stag PP39 Eprom Programmer ? I have tried Stag but they were very unhelpful. Any info would be greatly received Thanks Tim Jarrett

25 years, 4 months

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Available for pickup: Kennedy 9400 vac column 9 track

by cmcmanis＠mcmanis.com

Hello Everyone, My space has undergone some sudden compression and I need to let go some of the things I don't use in my collection. One of the things on that list is a Kennedy 9400 vacuum column 9-track tape drive. It worked when it was decommissioned however in storage the glass cover plates in the vacuum columns have slid down a bit making them no longer air tight. A heat gun to loosen the adhesive and readjust these should make it right as rain again. It is in a rack (DEC corporate type, not an H960) and its in Sunnyvale CA. If you're interested in it let me know. It was, in its day, the Cadillac of tape drives. --Chuck McManis

25 years, 4 months

1
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Commodore 386 LT power adapter

by lgwalker＠look.ca

I picked up a Commodore 386 laptop without a power adapter. A nicely designed little box except for the !#%$%^^$ proprietory adapter connection. It's like a Mac 8-pin minisub mounted upside down. Anyone know the pinouts for this ? Amazingly little info on these boxes (286/386)on the net. Like many LTs it is 16v with a 12v battery. 3 of the pins are tied to ground and one seems to go to the battery. Anything similiar on the Amiga ? larry Reply to: lgwalker(a)look.ca

25 years, 4 months

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Computers for swap or sell

by tosteve＠yahoo.com

Hi, I have some extra systems, see if there's anything that you like! 1.Apple IIc with monitor (small green screen) 2.Apple IIc Plus 3.Apple III with Monitor III 4.Macintosh Portable (model 5120) 5.TI-99/4A (black/silver) 6.TI Peripheral Expansion Box (PEB) 7.HP-110 8.Timex Sinclair 1000 with 16K memory pack 9.Kaypro II 10.Several Commodore 64 computers (non-working) 11.Several Commodore 1541 floppy drives (working) 12.Amiga 500 13.Amiga 1000 14.Amiga 2000 __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/

25 years, 4 months

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Thanks, Tony! (Duell)

by Marion.Bates＠dartmouth.edu

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25 years, 4 months

1
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Mac IIfx

by witchy＠vorbis.demon.co.uk

Hi folks, I'm slightly happy in that I got my paws on the above machine today, complete with a CD, MacinStore hard drive and Magneto-Optical drive. What I'm not slightly happy about is that I discovered later on that because the SCSI on the IIfx is 3 times quicker than the SCSI on other MacIIs I need the special 'black' terminator to make it all work. I remember the terminator being in a box of cables but because I didn't know it was necessary I didn't pick it up and the chances of it being there next week are slim. Begging time - anyone got a spare? :) Also, I picked up another Sanyo MBC555 just to get the RGB monitor - Sellam's mentioned (with just a hint of irony :) that the MBC is one of this list's 'favourite' machines so I take it that it's not well liked here? If so why not? cheers! adrian/witchy www.binarydinosaurs.co.uk - the Online Computer Museum (as featured in Computer Weekly) 0:OK, 0:1

25 years, 4 months

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Booting an older RS6000 off cdrom

by pete＠dunnington.u-net.com

On Apr 24, 21:49, Enrico Badella wrote: > I tried all the cd players I had Matshita, Pioneer, Sony (ex Sun) > and even IBM. All on SCSI ID 6 512 bytes/sector none ever worked > except the Toshiba I pulled out of a RS6000 7013/59H. With this I > installed 4.2.1 then maye a mksysb tape. > > I could never explain why the 320H is so picky about CDs Ah, I've got one of those ex-RS/6000 Toshibas. I have the opposite problem -- it won't work on anything except an RS6000! It has custom firmware. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 4 months

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Commodore 386 LT power adapter

by lgwalker＠look.ca

I picked up a Commodore 386 laptop without a power adapter. A nicely designed little box except for the !#%$%^^$ proprietory adapter connection. It's like a Mac 8-pin minisub mounted upside down. Anyone know the pinouts for this ? Amazingly little info on these boxes (286/386)on the net. Like many LTs it is 16v with a 12v battery. 3 of the pins are tied to ground and one seems to go to the battery. Anything similiar on the Amiga ? larry Reply to: lgwalker(a)look.ca

25 years, 4 months

1
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PC-RTs and AIX (was: X10 & RTs)

by SUPRDAVE＠aol.com

In a message dated 4/24/01 5:21:42 PM Central Daylight Time, rdd(a)smart.net writes: << Do I recall correctly that the PC-RT's tape drive is a "floppy tape" sort of critter? It so, I'm wondering if I can just attach that tape drive to a UNIX box that supports it (if that's possible) and create some sort of bootable tape from the image files. Has anyone here done this? If not, has anyone here created a bootable tape from a working RT running AIX? -- Copyright (C) 2001 R. D. Davis >> Are you talking about the 6157 tape drive? I've heard that is the only drive that the RT will work with. I have both 6157 and RT, but no interface card for it yet. DB Young Team OS/2 antique computer collection, hot rod pinto, and more at: http://www.nothingtodo.org

25 years, 4 months

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X10 & RTs (was: IBM PGA)

by ken＠seefried.com

> > From: "Eric J. Korpela" <korpela(a)ellie.ssl.berkeley.edu> > > We also had a couple of PC-RT's running > X10 as a windowing system as opposed to X11. > Wow...that brings back memories. Anyone else use X10 on a BellTech BLIT card under System V/386? Quirky Intel video processor & all. I still see people using the cheapo BellTech HUB6 cards. How many have the 8530s unsoldered and replaced with 16550s... Anyone else use Dell System VR4/386? That was a really nice distro. Much nicer than Everex, AT&T, Microport, et. al. Yes kids...there was time when *nix on the i386 wasn't free. > > And a couple XTs running some Unix version (PCIX?) > I seem to recall PC/IX. Didn't Venix run on them as well? Anyone else remeber Venix? > > I need to stop the nostalgia now or I'll break into a rousing rendition of > "Where have all the RTs gone?" > Ack. No. I'm sure they are in the same place all of the other technicalliny interesting, ultimately quirky, underpowered, overpriced & poorly marketed hardware is. Ken Seefried, CISSP

25 years, 4 months

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DEC RRD40 CDROM Drives

by kees.stravers＠iae.nl

On 2001-04-24 classiccmp(a)classiccmp.org said to kees.stravers(a)iae.nl >You can bet there's a collector who is trying to get one of every >model of DEC storage device or something who will want an RRD40. >-tony I have one and I am very happy with it. Why people are talking bad about it I can't understand. Sure it isn't fast and has a strange caddy, but it is _very_ reliable IMHO. Once the disk is in, you won't get any read errors or timeouts or some such. I have installed operating systems on several VAXstation 3100s with other SCSI drives and with the RRD40, but while with other old non-DEC SCSI drives I sooner or later always got read errors or timeouts, installing with my RRD40 always worked first time without problems. And don't forget it is one of the very first CDROM drives ever. DEC was a very early adopter of the CDROM technology developed by Philips. The CDROM mechanism inside the RRD40 is the first 5.25 form factor drive made. The caddy system was used because of that form, the box was too full to add a motorized drawer. The first drive after it that had a drawer instead of the caddy did not have a motor, you had to pull out the drawer by hand. Please cut the RRD40 a little slack. It is amazing it still works today, even when connected to modern controllers. Kees. -- Kees Stravers - Geldrop, The Netherlands - kees.stravers(a)iae.nl http://www.iae.nl/users/pb0aia/ My home page (old computers,music,photography) http://www.vaxarchive.org/ Info on old DEC VAX computers (Mirrors: http://vaxarchive.khubla.com/ and http://vaxarchive.sevensages.org/) Net-Tamer V 1.08.1 - Registered

25 years, 4 months

2
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BCD accuracy (was: HP 85/Rocky Mountain BASIC replacement)

by ajp166＠bellatlantic.net

From: Jim Battle <frustum(a)pacbell.net> >clarifies the matter at hand. I claim that a floating point representation >specifies precision and has nothing to say about accuracy (other than >accuracy is limited by precision). Floating point binary is infamous for it's errors in that regard. >To clarify, say a number is 175.136985. This represents my weight very >precisely, but whether it is accurate or not is a different matter. Ah but if you convert it to a 24bit floating point (more bits would help but limiting it makes the error glaring) you may not be able to express it accurately enough. The BCD case induces more truncation limiting precision. >Again, I must be missing something, or perhaps it is a definitional >thing. I've given my definition for precision (or what you call >resolution) and accuracy. I claim accuracy is largely outside the scope of >a number representation. Perhaps you and others have a different >definition than I do and are also internally consistent. I'd like to hear >it, since I keep running into it and don't understand it. Accuracy express 1/3 binary and decimals for the same total bits. Limit the case to something shorter than the usual 32 or 64 bits say like 10 or 12 bits and you see the error. This is the gray zone where resolution, accuracy and range can collide. Of course with 128 bits of either case it's really meaningless then. Back in the olden days (8080/z80/6502) when math was often limited in the number of bits to something less than 32 bits this was more accutely noticed by the users. The infamous MSbasic 3.99999=4 and other examples come to mind. This led to things like NS* basic and HP using BCD to avoid the SQRT(16)=3.99999! >If, on the other hand, you want to know what is sin(0.1), I claim the >binary representation is more precise (and thus allows more accuracy; >accuracy here depends on the implementation of the trig algorithms and not >inherently in the number system). But the number of bits do make a difference. >maybe I should give up and take this to the alt.ieee.vs.bcd.floating-point >newsgroup. :-) Logically your correct but in the realm of older machines this was a real issue. Allison

25 years, 4 months

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3Mb Ethernet

by ajp166＠bellatlantic.net

From: Tony Duell <ard(a)p850ug1.demon.co.uk> >AFAIK it is not backwards-compatible, at least in the sense that no >10Mbps ethernet controller supports the 3Mbps data rate (at least, I've >never seen one that does). Neither have I. Also Eithernet AKA 802.x was never that slow. The 3 mb/s stuff I'd always called ARCNET. >There were no single-chip ethernet controllers, if that's what you're >asking. The ethernet circuitry for the classic PERQ (which was generally >10Mbps, but early enough that single-chip controllers didn't really >exist) is a 2910 sequencer, some microcode PROMs, some 9403 FIFOs, and a >lot of TTL glue logic (and some comparator-type parts for the interface >to the AUI connector). It takes up about 1/3rd of the EIO board. Correct, there wasn't current LSI that was fast enough in the beginning. The would change fairly quickly by 1984-85ish. Allison

25 years, 4 months

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Commodore 8050M disk drive. What's it for?

by pete＠dunnington.u-net.com

On Apr 24, 19:24, Tony Duell wrote: > > > > At 07:22 AM 4/24/01 -0700, Cameron wrote: > > >> I just picked up a Commodore 8050M dual 5 1/4" disk drive with a HP-IB > > >> interface in a surplus place. Can anyone tell me what system(s) it's made > > >> to work with? > > > > > >PETs, of course! > > > > Any PET? I have an 8032 in DEEP storage. > > I use an 8050 on my 8032SK, and it works fine. The 8032SK is an 8032 > logic board in a plastic case with a separate keyboard. So as far as I > know, the 8050 will work with the normal 8032 as well. I can confirm that it does (well, mine does). Any PET with Revision 3 or later ROMs does. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 4 months

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Partially garbled screen means what?

by tosteve＠yahoo.com

Hi, I have a few computers - C64, TI-99/4, that power-up with garbled characters on the screen. Otherwise, they seem to function correctly. What does this indicate? Bad RAM? Bad ROM? Thanks! Steve __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/

25 years, 4 months

3
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Booting an older RS6000 off cdrom

by claudew＠videotron.ca

Hi all I am in the process of finishing my spring cleanup and I am giving a RS6000 7012 320H powerserver its very last chance to see if I can get it to do anything usefull. I think I have mentionned this machine here before, still I am looking for some help on this. The machine is probably all ok. It was booting of the HDs with the original AIX when I got it and still will boot with the diags floppy disks for RS6000 and I can "talk" to it from a terminal connected to the 1st serial port....The HDs were taken out a bit later and the machine was left sitting in a corner for a long time. Machine has 80 Megs RAM, SCSI card...the hardware is acting ok. I dont have the keyboard, graphics card or monitor so I am woking this thing from the terminal connected to the serial port. I have AIX on 2 cd's they say ENTRY SERVERS R4.2.1. I checked on my Linux box and the files are there and the cds are readable. I have connected a Pionner DR-706S drive on the SCSI chain and also added one of the original HDs (was flushed of original AIX and used somewhere else) with a different ID on the chain. Chain is terminated at the end. I am trying to get this thing to do something usefull by re-installing AIX. I cant get it to boot AIX and install off the CDrom. I tried the CDrom at ids 5 and 6 (suggested in some AIX newsgroup posts for similar situations) The CD is configured for 512 byte block size... its a Pionner. I know that some CDROMs will not boot these RS6000 but is the only issue the block size? I have heard that Plextors, Pionner and original IBMs will boot these Rs6000. I have older toshibas and DEC that should support 512 blocks, should l I try these or its hopeless? I did put the machine in service mode...I did try to disconnect the battery to reset the bootlist. What is happenning now with HD and CDROM connected is machine goes through post and displays 253 then looks like it goes into a never ending loop of resetting the SCSI bus about every 2 or 3 minute or so. I can see the leds on both the HD and the cdrom flicker (cdrom also spins up and led flashes briefly every 2 -3 minutes or so) so I am suspecting that the RS6000 is seeing something on the SCSI bus and the machine is looking for something to boot with. I suspect it sees the devices because without the HD connected, it will go through post and then the floppy led will flash every few seconds waiting for the boot/diag floppies. I suppose it does not see any SCSI devices so it abandons booting from those and expects some floppies... The Pionner CDROM alone on the SCSI chain will result in the machine expecting floppies...so now I wonder if the CDROM is being seen at all... Ideas anyone? Thanks Claude http://computer_collector.tripod.com

25 years, 4 months

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rs6000 cd scsi boot problem

by thompson＠mail.athenet.net

Sorry, I deleted the original message on getting the rs/6000 to boot from CD rom but intended to reply The author mentioned a code 253, this is supposed to be "Attempting a service mode IPL from SCSI attached devices specified in the ROM device list" The AIX manual lists the following steps to boot from installation media seems like obvious stuff you've probably already done 1) turn on external devices 2) switch to service mode 3) installation media in cd drive 4) turn on rs6k 5) eventually you should get bos install menu I could not find any mention of required scsi ID's for the CDROM. Here is portions of the bootlist man page which might be helpful Description The bootlist command allows the user to alter the list of boot devices scanned by read-only-storage (ROS) when the system is booted. This command can alter the contents of the two battery backed-up RAM (NVRAM) boot device lists and the choice of boot device used on the next and subsequent system boots. This command supports the updating of the following: * Service boot list. The service list designates possible boot devices when the front panel keylock is in the Service position. * Normal boot list. The normal list is used when the keylock is in the Normal position. * Previous boot device entry. Retained in battery-backed-up RAM on the system unit. Each list contains a maximum of 84 bytes. When searching for a boot device, the ROS system selects the first device in the list and determines if it is bootable. If no boot file system is detected on the first device, ROS moves on to the next device in the list. As a result, the ordering of devices in the device list is extremely important. If no device list has been supplied, or if it was empty, the ROS system attempts to boot from the boot device used on a previous boot. (This assumes that the previous boot device was not a diskette drive.) If this boot device is unavailable or not bootable, the ROS system starts searching the I/O bus for the first device from which it can boot. The bootlist command supports the specification of generic device types as well as specific devices for boot candidates. Possible device names are listed either on the command line or in a file. Devices in the boot device list occur in the same order as devices listed the invocation of this command. Device Choices The device name specified on the command line (or in a file) can occur in one of two different forms: * It can indicate a specific device by its device logical name. * It can indicate a generic or special device type by keyword. The following generic device keywords are supported: fd Any standard I/O-attached diskette drive scdisk Any SCSI-attached disk (including serial-link disk drives) badisk Any direct bus-attached disk (Model 320 only) cd Any SCSI-attached CD-ROM rmt Any SCSI-attached tape device ent Any Ethernet adapter tok Any Token-Ring adapter fddi Any Fiber Distributed Data Interface adapter <snip> When a specific device is to be included in the device list, the device's logical name (used with system management commands) must be specified. This logical name is made up of a prefix and a suffix. The suffix is generally a number and designates the specific device. The specified device must be in the Available state. If it is not, the update to the device list is rejected and this command fails. The following devices and their associated logical names are supported (where the bold type is the prefix and the xx variable is the device-specific suffix): fdxx Diskette-drive device logical names hdiskxx Physical-volume device logical names cdxx SCSI CD-ROM device logical names rmtxx Magnetic-tape device logical names entxx Ethernet-adapter logical names tokxx Token-ring adapter logical names fddixx Fiber Distributed Data Interface adapter logical names <snip> Attention: Care must be taken in specifying the possible boot devices. A future reboot in Normal mode may fail if the devices specified in the device list become unbootable. A diskette boot is always available when the keylock is in the Service position. The system must not be powered off or reset during the operation of the bootlist command. If the system is reset, or power fails at a critical point in the execution of this command, a checksum error can cause the system setup information in battery-backed-up RAM to be lost. The file specified by the file variable should contain device names separated by white space: hdisk0 hdisk1 cd1 or one device per line: hdisk0 hdisk1 cd1 --

25 years, 4 months

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Free (or price of shipping) Stuff -- Part 1

by r_beaudry＠hotmail.com

Hello all, I have the following stuff available, free for local pickup in North Central Massachusetts, USA, or for cost of shipping to the world (US Postal service ONLY). Of course, if you want to offer real money, that's fine too :-), but as you will see, there isn't too much here worth anything ... I'm moving at the end of May, and don't feel like moving these things... There will be more later... - Commodore 64 CP/M 2.2 - Cart, manual, disk, original box - Qty. 3 Apple IIc -- From an old school district, dirty, engraved, yellowed. Boot DOS 3.3, no power supplies - Commodore C-64C -- Yellowed, but functional -- bare computer - Commodore 1530 Datasette unit model C2N -- untested, original box - Commodore Modem 1200 -- Model 1670 -- no box or manual - Thunderchopper game for C64/128 -- manual, disk, no box - Apple Joystick for IIe/IIc, Model # A2M2012 - Apple TV Switch Box for Apple IIc - TI Joysticks for TI-99, # PHP1100 - Qty. 2 Multi-cassette recorder cables for TI-99 - DEFCON 5 game for C-64/128 -- disk, manual,box - IFR (Flight sim game) for C-64 -- disk, manual, no box - Commodore Video Cable (6-pin DIN marked "Monitor" to 8-pin DIN marked "Computer") - IBM Data Collection Terminal 7527 (RS-232, 422/485 ports, three other ports, possibly serial), no power supply (needs 26 VAC,.5A) - TI-99 software (NO boxes, cart and manual only): - Oldies But Goodies - Games I (cassette) - Star Trek by SEGA - Munch Man - Number Magic - Football - TI Invaders - Personal Real Estate - Statistics - Parsec - Multiplication I - Hangman - Blackjack and Poker Email me (OFF-LIST) your address and lists (first come, first served) and I will quote shipping. You must prepay shipping (PayPal, money order [US $ only], or cash [US $]). If you wish to pick up locally, let me know, and we can make arrangements (I'm about 1hr. west of Boston, or about 1 hr. north of Worcester). If you need an immediate reply, email me off-list, as I only get the digest... Rich B.

25 years, 4 months

1
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SunOS 4.1.x binaries

by spectre＠stockholm.ptloma.edu

Does someone have binaries for tcsh and perl (just the executable, not the libs) for sparc-sunos-4.1? Prefer 4.1.1. I can't get gcc running on this Solbourne because it looks like AST stripped a whole bunch of include files. (which means the included C compiler doesn't work right either, sigh). lynx would also be wonderful if you have it :-) Thanks! -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- Work harder! Millions on welfare depend on you! ----------------------------

25 years, 4 months

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Commodore 8050M disk drive. What's it for?

by pete＠dunnington.u-net.com

On Apr 24, 10:41, Innfogra(a)aol.com wrote: > In a message dated 4/24/2001 6:48:48 AM Pacific Daylight Time, > rigdonj(a)intellistar.net writes: > > > I just picked up a Commodore 8050M dual 5 1/4" disk drive with a HP-IB > > interface in a surplus place. Can anyone tell me what system(s) it's made > > to work with? > It should work on any Commodore with a GPIB port. This was usually traces > brought out to the Circuit card edge for an edge connector to connect with. > Edge connector on one end and GPIB on the other end. Not *quite* any PET. It won't work with early PET 2001 series that still have original ROMs, because there are bugs in the IEEE-488 routines (printers work, but not much else). That's why I want a two-ROM-set piggyback board for mine. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 4 months

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Hmm...what the heck kind of cable is this????

by rhblake＠bigfoot.com

In a batch of power adapters and cables I found a stereotypical Commodore style beige serial type cable, having the DIN plug on the end - but only on one end. The other end is a 25 pin female d-sub. I know it's factory as the housing for the 25 pin has the C= emblem molded into it. Anyone know the function of this cable? Is it possibly a factory cable to allow connection to a PC serial port with Commodore peripherals, or PC peripherals to a Commodore port? Never seen one like this and I don't think I've heard of one like this. I know there's Commodore savvy people on this list and they'll know exactly what it's for. Any help is appreciated very much...

25 years, 4 months

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Need IBM Portable 5155 power supply

by tosteve＠yahoo.com

Hi, The PS in my IBM Portable seems to be dead. I would appreciate it if someone could send me a new PS! Thanks! Steve __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/

25 years, 4 months

3
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Commodore 8050M disk drive. What's it for?

by Innfogra＠aol.com

In a message dated 4/24/2001 6:48:48 AM Pacific Daylight Time, rigdonj(a)intellistar.net writes: > I just picked up a Commodore 8050M dual 5 1/4" disk drive with a HP-IB > interface in a surplus place. Can anyone tell me what system(s) it's made > to work with? I have seen them used on newer Pets. Early Commodores used GPIB for disk drives, printers etc. The 8040 was a huge Dual DSDD floppy drive, re. weight/mass & storage for the 8 bit days. It should work on any Commodore with a GPIB port. This was usually traces brought out to the Circuit card edge for an edge connector to connect with. Edge connector on one end and GPIB on the other end. I ran across a couple of those cables a couple of days ago. Prominently marked "Commodore." Several of the early machines had HPIB or GPIB. Of course the HP 8X series is the most well known. The Osborne came out with a GPIB port also IIRC. There was also a 4040 dual SSDD drive. Paxton

25 years, 4 months

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Amstrad PPC640 mains adapter

by daverogers90＠hotmail.com

I could not scan the ouside but this is what it says AC ADAPTER MDLE PPC640 AC-B FOR USE WITH PPC 640S/PPC640D/PPC512S/PPC512D MAINS SUPPLY 220-240V 50HZ-35W DC OUTPUT 13V 1.9AMPS

25 years, 4 months

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VIC-20

by chronic＠nf.sympatico.ca

Hey, I recently picked up a VIC-20 with Tape Recorder, Joystick, 5 games, etc. on EBay for 11 bucks. It was my first purchase as a classic comp collector, and I had a few questions concerning it and was wondering if any of you guys could answer: 1. Are there any mods to improve that god-awful display??? 2. Are there any companies that still sell the memory upgrades for these things? 3. Did i get a good deal for 11 bucks? was it worth it?? And finally, are there any schematics/tutorials on the net for creating text terminals? I wanted one to interface with a 6502 board i'm working at, but I wanted to build it myself and running some prog like HyperTerminal or whatever just didn't seem as fun. -Lanny Cox

25 years, 4 months

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My first problem w/ ebay came up... needs your advices

by lgwalker＠look.ca

> >> >> "Shipping cost will be $6.00 in the continental US Via US Postal Service" > >> > > >> >Psst. > >> > > >> >1. I'm in Canada. > >> > >> Hmmm, that isn't part of the united states yet, but I think it might be > >> later on. > >> > > > > Naahh, with the US running out of energy and water, we'll become like some > >of the oil-rich Arab states. Every Canadian will have a limosine and foreign > >workers will do the dirty work. > > We might have to seal the border tho to prevent american wetbacks from > >getting in. > > Tsk tsk, sniffing gasoline is a nasty habit. ;) > Well we have so much laying around up here that it can't be avoided. BTW, every British Colombia resident just got around a $200 rebate based on their sales of surplus electric power to California. Hope you have enough light to read this. I might be able to bootleg you some fresh water if you like. The government won't allow exports. It's possible that they might be willing to cut a deal to accept Alaska back tho. As global warming continues it's becoming positively balmy up here, on the other hand I guess increased air-conditioning needs should push up power consumption down there. More bucks in our coffers. &^)) heheheh. I had intended to send the previous message to the list but Pegasus defaulted to the previous reply mode. larry Reply to: lgwalker(a)look.ca

25 years, 4 months

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FS: Mac LC II and LC 580 (ebay)

by rhblake＠bigfoot.com

I have two excess machines in good condition just posted on ebay, not sure how many Apple/mac enthusiasts are out there: Here are the links to them in the event you want to look without committing to email with me: Mac LCII (just the main unit/pizza box): http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1232152984 Really good condition but yet untested other than power-up. Mac 580 all-in-one, complete: http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1232132300 This one has some minor plastics damage to areas that are not noticeable but otherwise it's in excellent condition

25 years, 4 months

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Commodore 8050M disk drive. What's it for?

by jeff.kaneko＠juno.com

On Tue, 24 Apr 2001 07:22:46 -0700 (PDT) Cameron Kaiser <spectre(a)stockholm.ptloma.edu> writes: > > I just picked up a Commodore 8050M dual 5 1/4" disk drive with a > >HP-IB interface in a surplus place. Can anyone tell me what system(s) > >it's made to work with? > > PETs, of course! And any Commodore with an IEEE-488 interface, even > the 64 if you happen to have an IEEE interface cartridge. Or even a VIC-20 for that matter (just happen to have a GPIB cart for mine :^). ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 4 months

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Commodore 8050M disk drive. What's it for?

by LFessen106＠aol.com

In a message dated 4/24/01 9:48:48 AM Eastern Daylight Time, rigdonj(a)intellistar.net writes: > I just picked up a Commodore 8050M dual 5 1/4" disk drive with a HP-IB > interface in a surplus place. Can anyone tell me what system(s) it's made > to work with? > > Joe > Should work with the old PET computers - it should have an IEEE interface. -Linc Fessenden A good magician never reveals his secret; the unbelievable trick becomes simple and obvious once it is explained. So too with LINUX! The nice thing about Windows is - It does not just crash, it displays a dialog box and lets you press 'OK' first.

25 years, 4 months

1
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3Mb Ethernet

by pete＠dunnington.u-net.com

On Apr 23, 19:48, Tony Duell wrote: > > >AFAIK it is not backwards-compatible, at least in the sense that no > > >10Mbps ethernet controller supports the 3Mbps data rate (at least, I've > > >never seen one that does). > > > > Oh, I mean as in being able to plug a 3Mb device into a 10Mb network. > > ALmost certainly not. Remember there were no 'hubs' back then -- ethernet > was implemented using relatively dumb transceivers (certainly without any > form of data buffering or rate conversion) linked by coaxial cable. A > 3Mbps system is not going to be able to handle 10Mbps data on the cable. A hub is just a repeater, it doesn't do anything to the data stream, and it wouldn't make any difference. But repeaters were part of the 3Mb/s spec, and Xerox did have some. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 4 months

1
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New stuff

by broth＠heathers.stdio.com

Just came back with a van full of goodies. 11/750 with box's full of docs and prints. Early versions of VMS software and New docs in binders. DECwriter II DECstation 2100 Box's of brand new sealed magtapes Spare boards for 11/750's Software for the 11/780. Data General 9-track tape drive from a MV20000 series. RA-92 etc... I also found a VAX 6000 but I beleive the owner has unrealistic ideas of what he can get for it. Brian. -- Brian Roth - System Administrator www.webwirz.com - Old Computer Repository Preoccupation is my main occupation.....

25 years, 4 months

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fairly OT, but y'all may be able to help me :)

by geoffr＠zipcon.net

I need to test a device that uses sensors that send back a signal using a 0-20MA current. anyone know of a source of a schematic to make something to generate such in 1 ma increnemts? or have any tips???

25 years, 4 months

4
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Pro380 Mono Video Cable

by dittman＠dittman.net

I've borrowed a VR201 for a couple of days but the guy that loaned it to me did not have the cable. Is this a straight-through cable? -- Eric Dittman dittman(a)dittman.net

25 years, 4 months

2
1
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Adaptec PDP-8e

by ajp166＠bellatlantic.net

Adaptec never made PDP-8s. I beleve other than DCC the PDP-8 was not ever built by anyother than DEC (or DEC Ireland). For the moment I'll leave out the Intersil/harris 6100 chips and related machines. Allison >> > Get your bids in early on this one. Its a rare Adaptec PDP-8e. Back in >> the 60's DEC licensed their PDP8 architecture to Adaptec to make exact >> replica's of their now infamous design. Sales were sluggish so they >> decided to make SCSI interfaces instead. >> > >> > Truly one of a kind.... >> > >> > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1232453120 >> > >> > Brian. One of a crock!

25 years, 4 months

1
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Free: PDP parts & VMS "Orange Wall" - Austin, TX

by mrbill＠mrbill.net

I've got a large set of DEC "Orange Wall" binders full of VMS 4.x/5.x documentation, free for pickup in Austin, Texas: http://www.pdp11.org/pics/orange-wall.jpg I'm running out of room and need these to go to a good home. I'll also "throw in" a RX01-compatible dual 8" floppy drive unit, if anybody locally can use it / needs it: http://www.pdp11.org/pics/eight-inch-floppys-front.jpg http://www.pdp11.org/pics/eight-inch-floppys-switches.jpg Bill -- Bill Bradford mrbill(a)mrbill.net Austin, TX

25 years, 4 months

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RFI shielding Basement

by truthanl＠oclc.org

Clint, Since your basement is already below grade it is not likely you would have too much horizontally polarized RFI radiating from it. You might just consider putting in a decorative tin cieling like in old 1890's vintage saloons, The way the panels interlock might provide a good faraday shield for vertically polarized radiated rf from the basement. It could be electrically bonded and tied to waterpipes etc for a good ground. How about fine metal screen stapled to the botton of open rafter/floor joists. Perhaps you can find foil covered craft paper backed fiberglass insulation, staple it up then bond the seams with 3M foil tape? This would also dampen mechanical noise of a big iron system running. If not insulation, the heaviest wide roll of tin foil. Overlap the seams and staple up then cover with battens to accept acoustic tile cieling? Foil Backed foam panels etc. See what other truly conductive building materials you can find. They even make conductive paint these days. Your best value will be in conventional conductive building materials, not specialized RFI materials. Usually door panels on computer cabinetry are gasketed with spring finger stock to keep RFI leaks to a minimum, but usually there is close mesh and larger grates on the top of machines to allow cooling by convection. Sincerely Larry Truthan

25 years, 4 months

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Adaptec PDP-8e

by brian.roth＠firstniagarabank.com

Thanks Tony. You guys were starting to worry me. Brian. I'm guessing that was a tongue-in-cheek reference to the guy who listed the computer mistakenly referring to it as an "Adaptec" -- Tony Brian Roth Network Services First Niagara Bank (716) 625-7500 X2186 Brian.Roth(a)FirstNiagaraBank.com

25 years, 4 months

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Z/H 100 AND S 100 PARTS

by r_beaudry＠hotmail.com

Just spotted this message on comp.sys.zenith. Anybody else interested in a group purchase? Unfortunately, "no lists and no viewing" makes it difficult, but if we could convince him of the number of people interested, maybe he would change his mind?? --------- I just purchased 5 Condo Aircraft Hangers at our local Airport. One hanger has a collection of hundreds of H/Z 100 computers and related parts Also there are many IMSAI, ALTAIR and other Vintage computers plus cards and related parts. The amount is staggering. I need to get this stuff sold hopefully before the end of the year so I can get it rented for Aircraft purposes. I do not intend to use E-Bay at this time. I am also going to add myown extensive supply of H/Z 100 stuff and S100 items to this pile. No lists will be provided and no viewing. Send me an E-Mail or phone me. E-mail to larryc(a)gte.net phone 425 774 2981. ------------ Rich B.

25 years, 4 months

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VIC-20

by mcguire＠neurotica.com

On April 22, Lanny Cox wrote: > I recently picked up a VIC-20 with Tape Recorder, Joystick, 5 games, etc. > on EBay for 11 bucks. It was my first purchase as a classic comp collector, > and I had a few questions concerning it and was wondering if any of you guys > could answer: As I sit here repairing a core plane from my pdp8/e (circa 1969) I still can't consider a VIC "classic" no matter how many years go by. Time sure does fly! I remember back in my high school days...my best friend Rob had a VIC-20, later a C64, while I was the Atari 800 freak. We had LOTS of fun on those machines, and taught ourselves lots of great stuff. Those "early" home computers sure did offer a lot of bang for the buck! > And finally, are there any schematics/tutorials on the net for creating > text terminals? I wanted one to interface with a 6502 board i'm working at, > but I wanted to build it myself and running some prog like HyperTerminal or > whatever just didn't seem as fun. Hmm...perhaps Don Lancaster's "TV Typewriter Cookbook"? Definitely a nice historically-sound pursuit. Copies can be found on eBay from time to time. Fun! :-) -Dave McGuire

25 years, 4 months

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VIC-20

by r_beaudry＠hotmail.com

> 2. Are there any companies that still sell the memory upgrades for these > things? I have an 8K cartridge, and I believe also a 16K cartridge gathering dust on my shelves. Email me your address, and I'll ship them off to you ... No guarantees that they work, but they're free :-) Also, try www.cmdweb.com. Prices are high, but they do have a lot of otherwise unavailable stuff for VICs, C-64s, and C-128s. > > 3. Did i get a good deal for 11 bucks? was it worth it?? > Just judging on price alone, I'd say yes, but as other have suggested, only you can decide that.... I have paid probably more than others would pay for a lot of things in my life, but at the time I considered them good deals...

25 years, 4 months

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3Mb Ethernet

by optimus＠canit.se

As we all know, Ethernet was only running at 3 Mbit in the early days. When was the move to 10 Mbit done and is 10Mb Ethernet backwards compatible? Also, were there any Ethernet controllers back in the old days, or what kind of interfacing did old Ethernet capable equipment such as the SUN 1 or DECNA use? -- En ligne avec Thor 2.6a. Was ist ein Erwachsener? Ein Kind, das vom Alter aufgepumpt ist. --- Simone de Beauvoir

25 years, 4 months

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IBM's PGA Adapter

by mcguire＠neurotica.com

On April 22, jpero(a)sympatico.ca wrote: > > Hi. Can anybody provide me with some info on the IBM PGA/PGC adapters for > > the IBM PC/XT systems? > > > > I heard that it is one of the first video adapters with on-board transform > > capabilities, and that it is very ahead of its time. Can anyone please > > elaborate? > > Also, where can I get some pictures, and is it still available for > > purchase? > > Half-half acceleration due to built in CPU and can compute arcs, > lines etc for cad work I think. > > But I know PGA is grossly unusual design and unrealistic cost kept it > from very common plus it requires non-standard PGA monitor to go with > it. Cost was about 5,000 I think. > > BTW, it is 3 boards package and monitor. Saw both monitor and card > set but not in action. If memory serves, the PGA had an 8085 processor on it. Interesting use of an otherwise general-purpose microprocessor. <flame bait> Indeed, an XT-class system with a PGA had a better processor on its video board than it did on its motherboard. </flame bait> -Dave McGuire

25 years, 4 months

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Using a 1.44MB 3.5inch floppy on an old controller

by mbbrutman＠chartermi.net

I have a few PCjrs running around, and I've often thought of either adding 3.5" drives to them, or replacing the standard 5.25" drive with 3.5" drives. The controller only supports double density data rates (250?), so I'm limited to 720KB 3.5" drives. These are getting hard to find. I connected a new 1.44MB drive to the controller, and behold, it worked! (With double density media of course.) The machine booted from the diskette (which was created from a 360kb image prepared on a Linux machine), and it also ran diagnostics. So now I'm confused - why did it work? Does the modern 1.44MB drive sense that the controller is only sending data at 250KHz rate? If so, how is it doing the sensing? (The reduced write-current pin (2) isn't being used - I verified that with a meter.) Thanks, Mike

25 years, 4 months

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VAX 6000 3-phase conversion (was: Re: Three Phase)

by ajp166＠bellatlantic.net

From: Clint Wolff (VAX collector) <vaxman(a)qwest.net> >The cages I've seen are made from an expensive copper screen, >like window screen, but they are for doing FCC interference >measurements, not shielding. I can get 1/2 inch square fencing >from the look home improvement center, but it is galvanized and >quite a bit coarser... > >Comments? First a faraday cage to run a vax is foolish. The FCC notice refered to is basically a hint about whose reponseability it is to fix RFI problems should they occur. Often it's not a problem save for at point blank range. RE: galvanized screening vs fine copper screening. If you cant do it right dont bother. As the holes get larger and the resistivity increases the attenuation decreases. Also as the holes get bigger the frequency at which the screen becomes RF transparent also gets lower. So to get an effective faraday screen fine copper screening with well bonded (often soldered) joints and a door that has RF tight joints are used. Also any wires that enter or leave have to be bypassed to avoid it becomming a leakage path in either direction. I participated in building one and it's a lot of work and after testing to find RF leaks. At the other extreme a cage of .500 galvanized will have effect but the effect is far more limited. to prove it take a roll and make a mini cage large anough to hold a battery AM/FM radio and see what I can hear >from inside it. Then take a tube and coat it with aluminum foil and try it with the same radio. You will also find it very difficult to solder or otherwise effectively bond the joints of a galvanized wire cage. Last item: The average system (even a PDP-8) will be much better in the RFI derby if all the covers are on and the correct cables are used. The later smaller one box systems are fairly decent if the case is metal and all the screws/hardware are in place. The killer items for RFI are SCSI cables, external disks that used any unshielded cables (BC05s come to mind) or monitors that used shielded cables but are incorrectly terminated. RS232 wires that do not use an external shield can be a path to propagate noise out of and otherwise tolerable box as well. Worst offender awards: TRS80 with EI... ghastly both radiating and affected by nearby transmitters. (1w 144mhz ht at 4ft would crash the average TRS80). Some of the Apple][s Early S100s with non-stripline and unterminated busses (altair!!!!). SBCs, no case at all most often. Many of the early all plastic cased (no internal conductive spray coat) with no internal shielding systems. Many (most) CRTs that are not metal boxed internally are noisy. Allison

25 years, 4 months

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What's a Mag Card II?

by mmcfadden＠cmh.edu

The microbiology lab where I worked kept a different card with each type of pathology report on them. The operator would enter the sample information into a "canned" document, and then could append any additional comments. These machines were real popular in the early 1970's for thesis typing and routine reports. You could put a chapter or a section on an individual card. Our secretary in graduate school had one and kept all the routine documents on individual cards. You wanted to requisition something she put in the requisition mag card, filled in the blanks and printed out the requisition. The unit had a IBM Selectric style printer as an output device. Mike mmcfadden(a)cmh.edu

25 years, 4 months

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Amstrad PPC640

by daverogers90＠hotmail.com

Hi my name is Dave i live in NewZealand i have been givern a PPC640 wich goes but it wants a start up disc if u have one could you please send a copy of it to me on brav(a)zfree.co.nz i would love to crank it up.

25 years, 4 months

2
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(3) Northstars + DiscJockey to rescue in Bothell, WA

by jfoust＠threedee.com

I'm trying to reduce the size and increase the sensibility of my collection, so I'll pass this one to the list... please contact him, not me. - John >From: "Wayne Gilmore" <wayneg(a)aa.net> >To: "John Foust" <jfoust(a)threedee.com> >Subject: Re: Old Computers >Date: Sat, 21 Apr 2001 13:11:57 -0700 >X-Mailer: Microsoft Outlook Express 5.00.2615.200 > >Hi again John, >I am located in Bothell, Washington. A few miles north of Seattle. >Wayne > >----- Original Message ----- >From: John Foust <jfoust(a)threedee.com> >To: Wayne Gilmore <wayneg2(a)mindspring.com> >Sent: Saturday, April 21, 2001 12:35 PM >Subject: Re: Old Computers > > >> At 12:16 PM 4/21/01 -0700, you wrote: >> >Hi. I have 3 northstar computers that I bought new and used for >business and as a personal pc before pc's.... yuk.. Also have a Morrow >Discjokey system that worked with it. I'd like to donate all... Manuals and >anything else that I have had to someone that wants them. Help >> >Thanks >> >Wayne Gilmore >> >> Wonderful! Where are you located? >> >> - John >>

25 years, 4 months

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(3) Northstars + DiscJockey to rescue in Bothell, WA

by jfoust＠threedee.com

I'm trying to reduce the size and increase the sensibility of my collection, so I'll pass this one to the list... please contact him, not me. - John >From: "Wayne Gilmore" <wayneg(a)aa.net> >To: "John Foust" <jfoust(a)threedee.com> >Subject: Re: Old Computers >Date: Sat, 21 Apr 2001 13:11:57 -0700 >X-Mailer: Microsoft Outlook Express 5.00.2615.200 > >Hi again John, >I am located in Bothell, Washington. A few miles north of Seattle. >Wayne > >----- Original Message ----- >From: John Foust <jfoust(a)threedee.com> >To: Wayne Gilmore <wayneg2(a)mindspring.com> >Sent: Saturday, April 21, 2001 12:35 PM >Subject: Re: Old Computers > > >> At 12:16 PM 4/21/01 -0700, you wrote: >> >Hi. I have 3 northstar computers that I bought new and used for >business and as a personal pc before pc's.... yuk.. Also have a Morrow >Discjokey system that worked with it. I'd like to donate all... Manuals and >anything else that I have had to someone that wants them. Help >> >Thanks >> >Wayne Gilmore >> >> Wonderful! Where are you located? >> >> - John >>

25 years, 4 months

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L@@K! RARE -- 2 EBAY SELLERS CONVICTED and 1 on the run....Another nice ebay ("epay") story...

by claudew＠videotron.ca

Sheeesh...not surprised....at all.... http://dailynews.yahoo.com/h/nm/20010417/wr/crime_ebay_dc_1.html I will continue to boycott this place as both a potential seller and buyer. Claude Canuk Computer Collector http://computer_collector.tripod.com

25 years, 4 months

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VIC-20

by LFessen106＠aol.com

In a message dated 4/23/01 9:00:28 AM Eastern Daylight Time, r_beaudry(a)hotmail.com writes: > > I have an 8K cartridge, and I believe also a 16K cartridge gathering dust on > my shelves. Email me your address, and I'll ship them off to you ... No > guarantees that they work, but they're free :-) > I would love to have one of these myself.. Let me know if there are any "extras" floating around! -Linc Fessenden The nice thing about Windows is - It does not just crash, it displays a dialog box and lets you press 'OK' first.

25 years, 4 months

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