test-drb

test-drb@ccmp.vtda.org

101090 discussions

by RodSmallwood＠mail.ediconsulting.co.uk

Hi I am curently investigating shipping costs between the UK and US. As collectors we don't need next day delivery but we do need full cover insurance. Don't go away. The cost is not that bad. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Richard Sent: 10 June 2007 00:12 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: My sale or swap list (Update) In article <86505602FE0FBB4CB9DE54636AA48D39022FC9 at EDISERVER.EDICONS.local>, "Rod Smallwood" <RodSmallwood at mail.ediconsulting.co.uk> writes: > VT 420 x1 (-)=20 > LA75 x1 x1 (-) =20 > HP 700 Terminal > HP 2392A Terminal x1 Too bad you're on the wrong side of the pond... -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

19 years

VCF East 4 - Wall Township, New Jersey

by c.murray.mccullough＠gmail.com

What can I say! Evan and M.A.R.C.H. have put on quite the show so far -> Vintage Computer Faire - East (4). What will happen today? Yesterdays presentation by Chuck Peddle of Commodore fame was music to the ears. Computer pioneers, some heralded, some not, are the reason we all can enjoy and share our passion of classic computing. Forever computing all! Murray--

19 years

DDC Fixed Head Disks

by Billy.Pettit＠wdc.com

dwight elvey wrote: The only two things I can think of where mentioned by others. One was thermal conductivity and the other was friction. Helium has almost zero friction. Still, the stuff leaks out of things so fast. Even solid surfaces. I find it funny that it is cheaper than argon. There is a lot of argon but I'd guess the extraction from natural gas, where it is undesired for burning, makes helium cheaper than argon that has to be intentionally removed from air. Two percent of air is argon as I recall. Dwight ------------------- Billy writes: Helium was used in a lot of early fixed disk and drum systems. There were several reasons for helium, but the main one is it gives good flying head support. Less dense than air, it allowed the heads to fly closer. It also offered less resistance than air, hence less power. And there was something about it having less boundary layer pressure at high speed, a good thing when you are trying to increase density. It was a bitch to seal in, so most systems sealed the entire assembly with only I/O cable connectors on the outside surface. I worked on a drum system using helium in the late 1960s and we had to change the cylinder about once a month. The cylinder was 20 cubic feet. One other application I heard of was for high altitude airborne systems. The air was too thin so a positive pressure system was used with helium. Since the application was military, not much was written about it. This was also the same application that used a micro drum (roughly 3 inches long, 1 inch in diameter.). Billy

19 years

computergraphicsmuseum.com URL

by legalize＠xmission.com

oops, that's what I get for drinking beer on a Saturday night... <http://www.computergraphicsmuseum.com> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

19 years

Free in Philadelphia PA

by alhartman＠yahoo.com

I've got a 10mhz IBM AT With a display (I don't remember if mono or color...I have plenty of each) for the taking. I think it's got at least 640k in it, but may have 512k. I know it has a Hard Drive. Not sure what size. It has a 1.2gb FDD. I don't have an IBM keyboard for it. But I can dig up something compatible. It's for free... so whaddya want? You can also have an original IBM Graphics Printer to go with it. (Epson MX-80 Rebranded). I'm sure I can dig up a printer cable too. It's located in N.E. Philadelphia, PA E-Mail me off list. Al Philadelphia, PA

19 years

TESTFDC usage

by aek＠bitsavers.org

> Athlon/Athlon XP CPUs, the > Super I/O controller is a VT82C686B ... > When I test the 5.25" drive I see a pass at 300k DD (with a 360K disk) > but with the 1.2MB disk I see three failures. I was expecting 500k DD > to pass with a 1.2MB disk ... am I wrong? I sent Dave about a dozen MB tests that I did on various MBs recently. There was one case where 1.2MB 500k DD failed, but read/wrote in DOS.

19 years

Updates to my PDP-11 web site

by wacarder＠earthlink.net

>woodelf wrote: >> Since my collection has changed in the past couple of years (acquired a good many new items, traded/sold some other items), I decided to update my "PDP-11 Collection" page. I've added lots of new pictures. Take a look if you like "DEC Porn", as Jay calls it. > >Look Look Look ... Drool Drool Drool ... >The Dec Computer Lab is new for me. Is that scanned in on bytesavers? >A quick look around does not show it there? I'm not sure if Al has it on bitsavers or not. I have a couple original handbooks for the computer lab and a copy of the teacher's guide. Ashley http://www.woffordwitch.com

19 years

Updates to my PDP-11 web site

by wacarder＠earthlink.net

>woodelf wrote: >> Since my collection has changed in the past couple of years (acquired a good many new items, traded/sold some other items), I decided to update my "PDP-11 Collection" page. I've added lots of new pictures. Take a look if you like "DEC Porn", as Jay calls it. >> >> Ashley > >Hey I want real PORN ... How about a nice NUDE 2008 green bar calender? :) > That can be arranged. I have the old calendar printing program and several nudes to choose from. :-) Ashley http://www.woffordwitch.com

19 years

LM309K regulator

by hilpert＠cs.ubc.ca

While conversing with another list member about some old components, I was reminded of hearing somewhere that there was a nasty failure mode of the LM309K 5V regulator (it being the (or one of the) first integrated 5V regs) which might make it somewhat undesirable for current use. I don't want to declare that there is such a problem - it's a vague second-hand rumour to me - so can anyone confirm or elaborate on this? I've never personally run across problems with them.. A 76 Moto databook indicates it has those nice things like short-circuit protection and thermal-overload protection.. ..another device perhaps?

19 years

Dec CD Drives.

by RodSmallwood＠mail.ediconsulting.co.uk

Hi Before I go to a dealer and maybe get ripped off. Has anybody in the UK got any DEC RRD4x series CD Drives. (Must work with a KZQSA) Rod

19 years

VCF East 4.0 wrap-up

by evan＠snarc.net

Hola, collectors! I just got home from VCF East 4.0 of course I?m biased, but what a great weekend! Around ? of the exhibitors came Friday night afternoon/evening to get ready. This year we expanded the venue from one room to two. But, the second room is still VERY under construction. Some of our volunteers were literally still installing sheetrock that morning. So we had to use some yellow caution tape, but it added character. :-) Friday night was bar trip #1 I drove back to my hotel safely was but very, very tired waking up early Saturday. For Chuck Peddle?s videocon Saturday morning, the weakest part of our internet connection was the wifi or so I thought! Turns out, the wifi worked great, as did Skype. Chuck spoke to us for an hour+ then he got an strong round of applause then we were about to begin audience Q&A. All was fine until that part. Until our videocon server went BSOD!! We couldn?t even get it to reboot in ?safe mode? so we emailed Chuck from my cell phone, who said he had to get going anyway, but that anyone with questions could email him. Okay then! Bil Herb, Bob, Russell, and Dave Haynie took their turns next; lots more great stories and they brought many prototypes to show us, including the famous Commodore LCD. They even hung around out exhibit hall after the panel and after some chocolate chickenhead cake. One of them, Haynie, joined us for the official VCF Dinner that night. Speaking of dinner: the bill was $555.58. If only someone hadn?t drank that last three cents of beer ! Today was just as much fun. We had how-to lectures, we learned the history of CPM, we heard all about Jeri E.?s toy-making experiences and there?s a picture of someone posing next to our museum?s chip collection. Meanwhile the collecting guru Sellam told some secrets which I?m not going to share here except for this one: when pushing an 8-foot-tall rack, be alert for unstable monitors on top. (Hopefully there won?t be a scar.) My LEAST favorite part of any VCF is tearing down at the end of the weekend. But it had to be done. To ease out of the weekend while keeping out good mood, I went to dinner with Hans and Sellam, had a few beers, and well it?s been a while since I drank three nights in a row. Anyway, the show was terrific. Peddle?s unique hour-long lecture, 20-ish exhibits, attendance in the triple figures, and we even gave a few museum tours. Heck, one guy came all the way from New Zealand. Pics and hopefully some video will be posted soon. Patrick: I now pass the baton to you!

19 years

Updates to my PDP-11 web site

by wacarder＠earthlink.net

Since my collection has changed in the past couple of years (acquired a good many new items, traded/sold some other items), I decided to update my "PDP-11 Collection" page. I've added lots of new pictures. Take a look if you like "DEC Porn", as Jay calls it. Ashley http://www.woffordwitch.com

19 years

Help on HP 82901 drive

by steerex＠mindspring.com

> Hello. > I have a partially defective HP 82901 drive. I don't know this drive by model number, but IIRC it's a daul 5.25" drive with an HPIB interface. I have an HP drive that fits that description, unfortunately I can't get to it quickly, so I can't verify the model number, but I do remember some things about it. Can you post a picture of the controller card somewhere? I may have a spare one laying around here (somewhere). SteveRob

19 years

Anyone know the rotation speed of this FDD?

by pludikar＠sympatico.ca

> Go to http://www.hpmuseum.net/ and follow the links for disks and then > the 9114. On the 'product documentation' page you'll find 'my' schematics > for the 9114V. That includes the drive itself. Tony, many thanks - the schematics/circuit diagrams appear to be 100% relevant to my board. I can now start trying to figure out what I zapped. It looks like the -50 and -30 suffixes are little more than cosmetic changes or switch configurations. My FDD is also a half height. I was thinking about the Z0765A FDC and how to make it compatible with a 300rpm FDD. It seems that all that needs to be done (in theory) is to reduce all the FDC clocks by half - the 8MHz clock to 4MHz and the Write Clock to 500KHz. (NEC indicates this in their uPD 765A datasheet). Clearly not as simple to execute as it sounds, but not beyond the realms of possibility. Thanks to everyone else who responded. Peter

19 years

SST Manual/ Windows 286 needed

by rcini＠optonline.net

All: I?m looking for a copy of the printed manual for Murray Sargent?s Scroll Screen Tracer (SST) debugger program. If someone has it can you scan it for me? I?m also looking for a copy of Windows/286 2.1 disks ? I can?t find mine in my box (crate) of disks. Thanks! Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

19 years

PI 4D/20 (WAS: Re: you *can* get a good deal on ebay)

by compoobah＠valleyimplants.com

Nice beast, a bit slow but decent, especially with the Super Turbo option. In talks with other hobbyists (and experience with my 4D/25 Super Turbo), it seems like the Turbo option is a bit delicate, so you might need to remove the turbo card and plug the RE1/RE2 into the slot (if it is a 1988 model, then Turbo wasn't offered and won't be an issue). The symptoms are graphics lockups. I haven't had time to look at my card and se what's up. It will run "IRIX" 4D1-3.2 through IRIX 5.3 just fine, note that to install from a CD-ROM you need to have a SGI-firmware CD-ROM (there is a hack in the firmware that has the drive identify itself to the SGI PROM as a fixed SCSI disk long enough to trick the PROM into booting >from it), and you'll need to ignore the "install system software" menu option and instead go into the PROM monitor, run "boot -f dksc(0,<CD-ROM device ID>, 8)sash.IP6" and then at the sash prompt type "install". IRIX 4.0 and above deal with CD-ROMs just fine, can't remember about 4D1-3.x. For 5.3 you will want 32MB or more, look on the old "SGI FAQ" for information on the endearing features of the PI 4D/2x memory controller.

19 years

Free in DC area

by shoppa_classiccmp＠trailing-edge.com

Free, you pick up in the MD suburbs (near beltway) or I can meet you in downtown DC most weekdays: * Several hundred new anti-static bags * Digital PR/S01 portable paper tape reader * Converter box for above paper tape reader that makes it to RS-232 so you can plug in a PC Drop me an email at "shoppa at trailing-edge.com" if you're interested. Tim.

19 years

Local (NY) PDP guy needed

by rcini＠optonline.net

All: I got an unusual phone call this evening from a doctor on Long Island who is doing theoretical biological research that, he hopes, will have a commercial application. Without going into much detail (because it was like drinking from a fire hose and I can?t remember it all), basically he is looking to emulate some biological processes in software. He believes that the ?instructions? that code for the biological processes are based on 6-bit instructions (or multiples thereof), so he?s looking for someone with that kind of architectural background. A PDP-8 has 12-bit instructions and I think the PDP-9 and 15 used 18-bit words. I?m not knowledgeable about any of the other minicomputer architectures to guess word size, but anything that?s a low multiple of 6-bits should work for his purposes. If anyone?s willing to have a conversation with this person, please contact me off list and I?ll pass on his contact information. Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

19 years

computergraphicsmuseum.com is online!

by legalize＠xmission.com

It needs a lot more data, but I'd like all listers to feel free to contribute.... Lots of data yet to be entered by me, but the primary stuff is all wikis so you can all add stuff. If there's a feature you'd like to see, let me know. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

19 years

My sale or swap list (Update)

by RodSmallwood＠mail.ediconsulting.co.uk

My sale or swap list (Update) (All funds to save other old DEC kit) PDP 11/94 (No cpu cards) x2 VT 420 x1 (-) LA75 x1 x1 (-) HP 700 Terminal x1 HP 2392A Terminal x1 Shiva LAN Rover x1 Victor PC in pristine condx. x1 SA600 (2 x RA92) Disk array in Cab x1 CXA16-M (M3118-YA) 16 Async line board x3 (+) VAX 4000-500 CPU Card (L4002-BA) x1 (+) VAX 4000-500 MEM Card L4004-CT x1 (+) Decserver 200/MC DSRVB-AB Ethernet AUI in 8x 25way D RS232 out. x5 (+) (-) One or more sold or swapped. (+) One or more added

19 years

wang 2200vp available, Vicksburg, MS, USA

by frustum＠pacbell.net

I was contacted a month or so ago by a gentleman with a wang 2200vp system that he would like to find a home for. I don't need another one, and I offered to "advertise" it here, but then it slipped my mind (it can be quite slippery sometimes). Many years ago in my business I had 2200VP set up complete with a Model 2260 disk drive. I think I had a Wang PC or two also. Since then, the components & the manuals (also floppies & disk cartridges) have been in storage in my attic (well, not the disk drive - whew! -- it is in a corner of my enclosed garage). Do you know anyone that might want any of this? I see nothing on ebay. I'm about ready to haul it all to the dump. Sigh. In a later exchange he said: I'm at Vicksburg, MS, right close to the Mississippi river. Yes, please spread the word that I want to move this Wang system out of my attic (and make room for other junk! ), The $12,000 5 meg (each platter?) disk drive I really think will have to go to the dump. I did not see any mention of it on the web and I doubt that anyone could use it. Have you ever seen the platters offered on ebay? I was thinking of trying that. I'm sure he doesn't want his email address in the archives, so please email me and I'll forward on his email address to you. You can learn more about the wang 2200 from my web site: http://www.wang2200.org

19 years

HP 1650b boot floppy; was Re: Anyone know the rotation speed...

by aek＠bitsavers.org

> I just wanted to create a backup & duplicate of the disk. imagedisk works

19 years

Anyone know the rotation speed of this FDD?

by pludikar＠sympatico.ca

Hi, I have a Sony MP-F52W-30 floppy disk drive, which I need to replace - it semi worked until recently (would read but not write) until I zapped it by accident. It comes from an HP 1650B logic analyzer - does anyone know if it's a 600rpm or a standard 300rpm device? If it's a 600rpm then I've found someone who has one but wants a lot for it, otherwise I'm reasonably sure I can modify the cable connections to use a standard/modern drive. On the motherboard side, it has a Zilog Z0765A FDC, and I've successfully created disks on my PC (using HP's LIFUTIL) that worked on the drive. This makes me think that the drive is a standard 300rpm. Any thoughts? Curiously the serial number label indicates the drive as a MFD-52W-10, while the bigger label on the bottom of the unit shows MP-F52W-30. I guess that the MFD is a base which is then modified to HP's specs (MP-F). BTW Does anyone know what the -10, -30 suffixes mean? I've also seen -00D and -01D around as well. Thanks in advance Peter

19 years

Databooks: keep or toss?

by RodSmallwood＠mail.ediconsulting.co.uk

Hi I remember about 1971 collecting a PDP-8 I was going to use to use for control/data capture on a experiment at Harwell. It struck me then why supply such cheap manuals with a multi thousand dollar well built computer system? It was obvious that the books would fall apart if used. I had our repographics people take the books apart, blow them up to A4 and loose leaf bind them. They used research report archive paper (rot proof, fire resistant and good for 100+ years) and as a back up microfiched them as well. Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Ensor Sent: 08 June 2007 23:32 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Databooks: keep or toss? Hi, >>...paper to self-destruct. Think yellowing, crumbling >>paperbacks... > > Umm ... DEC's paperbacks. Actually, my 1979 onwards PDP-11 handbooks are fine. They're printed paper which looks slightly glossy and haven't yet started deteriorating (noticably anyway). OTOH, my early/mid 70's PDP-11 and PDP-8 books are smouldering nicely.... ;-) TTFN - Pete.

19 years

Databooks: keep or toss?

by kahrs＠caip.rutgers.edu

I have 25 linear feet of old databooks. I've kept them partly out of sentimentality and partly because I have to fix stuff of that era now and then. The data sheet archives I've seen on the web are woefully incomplete. Does anyone know of anyone/anything that collects these?

19 years

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