test-drb October 2001

test-drb@ccmp.vtda.org

259 participants
770 discussions

looking for documentation for 1963 minuteman missile computer

by technos＠nerdland.org

On Wednesday, October 17, 2001 9:55 AM, Gene Buckle [SMTP:geneb@deltasoft.com] wrote: > > > For the gun type, all bets are off - it's a _much_ simpler design. > > > > > > I wonder what kind of yeild you'd get using a .50 diameter bullet against > > > a 1.00 diameter target. (inches) > > > > The answer is 0. The ISTR that the critical radius for U235 is about 9 cm. > > For plutonium, the critical radius is about 5 cm. Plutonium doesn't work > > too well in the gun types, so you would tend to get a small but extremely > > messy explosion even with a critical assembly. > > > > There are tricks to getting the critical radius down to lower values... > > > Hmmm. Well, like I said, I'm not a weapon designer. I don't even play > one on TV. :) > > (does the trick involve Tritium, or is that just a yield enhancer for > implosion types?) > > g. > Naw.. Neutron generators.. Basically a golfball sized device that spits off tons of neutrons.

24 years

Unidentified device: trans lux teleprinter

by dhquebbeman＠theestopinalgroup.com

Strange.... Trans-Lux was the name of a chain of long-gone movie theaters... -dq -----Original Message----- From: McFadden, Mike [mailto:mmcfadden@cmh.edu] Sent: Tuesday, October 16, 2001 11:17 AM To: 'classiccmp(a)classiccmp.org' Subject: Unidentified device: trans lux teleprinter I came across a terminal that was labeled Trans Lux Teleprinter, The case is blue and there is a multicolored keyboard, some red, blue and white keys. I have tried google and altavista web searches with out any luck. I haven't taken the pile of computers apart to look at the name plate. Any knowledge about this device? Mike mmcfadden(a)cmh.edu

24 years

IIgs using hard disk 20

by dhquebbeman＠theestopinalgroup.com

> Doug: > > It was through the floppy port. It used a special boot > disk with a "HD20" init to make it work. > > I haven't opened mine recently, but the drive only had one I/F > connector on it but I can't remember the pin count. I could > look tonight. Aging is a terrible price to pay for maturity... :-( -dq

24 years

IIgs using hard disk 20

by DAW＠yalepress3.unipress.yale.edu

! From: Louis Schulman [mailto:louiss@gate.net] ! ! Won't work, simply because the floppy port on the GS doesn't ! have the firmware to support the HD20, while ! the early Macs did. But there are many better hard drive ! options for a GS, anyway. ! ! Louis ! ! On Mon, 15 Oct 2001 16:39:02 -0400, Chris wrote: ! ! #Does anyone know if an Apple IIgs can use an old Macintosh ! #Hard Disk 20. The Mac HD is NOT scsi, but rather uses the ! #disk drive port on a Mac. It ... Louis --- Umm, okay, what are those other HDD options? I'm curious... :-) --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

24 years

Unidentified device: trans lux teleprinter

by mmcfadden＠cmh.edu

> I came across a terminal that was labeled Trans Lux Teleprinter, The case > is blue and there is a multicolored keyboard, some red, blue and white > keys. I have tried google and altavista web searches with out any luck. > I haven't taken the pile of computers apart to look at the name plate. > Any knowledge about this device? > > Mike > mmcfadden(a)cmh.edu >

24 years

HP1000F/2117F

by Joseph.Salamido＠tobyhanna.army.mil

Skipped content of type multipart/alternative

24 years

Information Please -- HP 13037D Storage Control Unit

by Joseph.Salamido＠tobyhanna.army.mil

Skipped content of type multipart/alternative

24 years

IIgs using hard disk 20

by RCini＠congressfinancial.com

Doug: It was through the floppy port. It used a special boot disk with a "HD20" init to make it work. I haven't opened mine recently, but the drive only had one I/F connector on it but I can't remember the pin count. I could look tonight. Rich ========================== Richard A. Cini, Jr. Congress Financial Corporation 1133 Avenue of the Americas 30th Floor New York, NY 10036 (212) 545-4402 (212) 840-6259 (facsimile) -----Original Message----- From: Douglas Quebbeman [mailto:dhquebbeman@theestopinalgroup.com] Sent: Tuesday, October 16, 2001 9:41 AM To: 'classiccmp(a)classiccmp.org' Subject: RE: IIgs using hard disk 20 > BUT... predating that was a "Macintosh Hard Disk 20" that was not scsi. > Rather is was some drive (don't know what kind, but MFM seems sensible > enough) that used a special adaptor board that enabled it to plug into > the disk drive port on a bunch of the older macs. It was all enclosed > (drive, power supply, adaptor board) in one nice zero footprint beige > case (back when beige meant brown, and not grey like "beige" computers of > today). In spite of the now long-extant senility, I seem to recall that these interfaces through the serial port, not the floppy port. Regards, -dq

24 years

looking for documentation for 1963 minuteman missile computer

by dhquebbeman＠theestopinalgroup.com

> At 11:43 PM 10/14/01 -0400, you wrote: > >On Monday, October 15, 2001 9:25 PM, Carlos Murillo wrote: > >> Rocket science is in the rocket engine. Navigation is > >> not that hard, comparatively... > > > >When all you have to navigate with is a computer that takes > >a full (milli)second to multiply and a telescope that could probably > >only sense the horizon it gets a bit harder.. > > Agreed. But at this point in time, navigation algorithms that > are sufficiently precise can be developed/recreated by (almost) > anyone with a phd in control theory. Rocket engine science is > lots harder, because it is still a (largely) experimental affair. True. Despite development over 40 years, witness the recent death of the Linear Aerospike. Although in fairness, the engine is working fine, it's the fuel tanks that we still don't know how to build... -dq

24 years

SCSI problems

by dhquebbeman＠theestopinalgroup.com

> A friend has a 9 gig Seagate drive and an Adaptec 1542C card and is > having a helluva time getting it to work with a late model > motherboard. > boots okay from an IDE drive, but the aforementioned setup > hangs almost > every time. > > Do you know of an incompatibility with the drive and card; > i.e. too much > drive for the scsi bios to understand??? The card has trouble with high transfer rates. The on-board BIOS allows you to limit that to 5MB/s; when I slowed it down to that, it worked fine for me. YMMV (rather, HMMV), etc... -dq

24 years

ArcNet and the Pursuit of Multiple Topologies

by dhquebbeman＠theestopinalgroup.com

> Now I'm thinking that the "T" in "10BaseT", "100BaseT4", etc. and the T in > the line capacities "T-1", "T-2", etc. are the same thing. > Is that true? I thought the 'T' in 'T1' stood for "trunk", as in trunk line... -dq

24 years

IBM unit record (punched card, tabulating machine) docs

by mhstein＠usa.net

Some real vintage (although "computer" would be stretching it) docs looking for a GOOD home: IBM 402/403 & associated peripherals manuals & some schematics. mike

24 years

looking for documentation for 1963 minuteman missile computer

by jtinker＠coin.org

I'm looking for documentation for a 1963 minuteman missile navigation computer. Any leads would be appreciated. Thanks, John Tinker

24 years

IIgs using hard disk 20

by SUPRDAVE＠aol.com

In a message dated 10/15/01 10:41:05 PM Eastern Daylight Time, mythtech(a)Mac.com writes: << There are two different products with the name Hard Disk 20. One is the Apple Hard Disk 20 SC and it is a SCSI device. There were also 40, 80 and I think 160 mb versions (and maybe others in larger sizes). BUT... predating that was a "Macintosh Hard Disk 20" that was not scsi. Rather is was some drive (don't know what kind, but MFM seems sensible enough) that used a special adaptor board that enabled it to plug into the disk drive port on a bunch of the older macs. It was all enclosed (drive, power supply, adaptor board) in one nice zero footprint beige case (back when beige meant brown, and not grey like "beige" computers of today). They are two totally different drives, sold at two different time periods (although, I do believe they overlapped for a while, until the SCSI version completely replaced the disk drive version). -chris >> I have a couple of those hard disk 20s that still work, one was recovered >from a trash bin with a professor's work still intact! I have a mac128, but has an aftermarket board in it that upgrades it to a plus class machine, but I do know it works just fine with the 512k models I have. even though it's 20 meg, disk access is only about as fast as the floppy drive. -- DB Young Team OS/2 old computers, hot rod pinto, barbie's rocket motorhome and more at: www.nothingtodo.org

24 years

IIgs using hard disk 20

by mythtech＠Mac.com

>> was designed to work with older non scsi macs (128k 512k), and could be >> daisy chained thru the disk drive ports > >Are you SURE? I have an HD20 which works just fine on a Plus, but which I >have NEVER been able to make work on a 128k. My 512k has video problems >and I haven't had a chance to sort those out so I can test the HD20 on it. I was almost 100% positive that I once had it working on a 128k, but a search of apple's TIL shows that the HD20 works with the 512ke, Plus, SE, Classic, IIci, and Portable... so I guess I never took it lower than my Plus (I never owned either of the 512's). This is going to be a head scratcher for me for some time... I distinctly remember hooking it up to my 128. (I can picture sitting in front of the table working on it... I guess I must have failed in my attempts, but I could have sworn I was successful) -chris <http://www.mythtech.net>

24 years

IIgs using hard disk 20

by mythtech＠Mac.com

>I think I've got an old Hard Disk 20 and it's a SCSI device. I'll have to >find >the lid to see what it says on it, though. It seems to me that it's an >old MFM >drive with a customed up SCSI bridge adapter on it. There are two different products with the name Hard Disk 20. One is the Apple Hard Disk 20 SC and it is a SCSI device. There were also 40, 80 and I think 160 mb versions (and maybe others in larger sizes). BUT... predating that was a "Macintosh Hard Disk 20" that was not scsi. Rather is was some drive (don't know what kind, but MFM seems sensible enough) that used a special adaptor board that enabled it to plug into the disk drive port on a bunch of the older macs. It was all enclosed (drive, power supply, adaptor board) in one nice zero footprint beige case (back when beige meant brown, and not grey like "beige" computers of today). They are two totally different drives, sold at two different time periods (although, I do believe they overlapped for a while, until the SCSI version completely replaced the disk drive version). -chris <http://www.mythtech.net>

24 years

Rescue / Sale in AZ: PET, Tandy, Apple, PC

by bigfish＠bluefrognet.net

I am interested in the 3m thermofaxes. are they still avail? I will contribute$$$$$$$. please advise, Gordon Link

24 years

looking for documentation for 1963 minuteman missile computer

by Innfogra＠aol.com

I have seen the boards out of one of the minutemen missile computers. IIRC they are very interesting Boards composed of discrete components. Anyone who has a full computer is very lucky. I would consider it to be an extremely rare collectable. The Boards that I saw were about 4"X6" and heavily plated in gold then lacquered. They are very pretty. I would love to see a whole computer. Paxton Astoria, OR

24 years

IIgs using hard disk 20

by healyzh＠aracnet.com

I don't think the one that he's talking about is SCSI, it plugs directly into the floppy port on a Mac 128k or Mac 512K. ISTR, using one on a newer Mac Plus instead of a SCSI drive as I needed something of that formfactor and that was all I could get my hands on at the time. Based on how it's used, I'm guessing you're right about it being a MFM drive, but I suspect it's some wierd sort of bridge in it. Zane > I think I've got an old Hard Disk 20 and it's a SCSI device. I'll have to find > the lid to see what it says on it, though. It seems to me that it's an old MFM > drive with a customed up SCSI bridge adapter on it. > > Dick > > ----- Original Message ----- > From: "Chris" <mythtech(a)Mac.com> > To: "Classic Computer" <classiccmp(a)classiccmp.org> > Sent: Monday, October 15, 2001 2:39 PM > Subject: IIgs using hard disk 20 > > > > Does anyone know if an Apple IIgs can use an old Macintosh Hard Disk 20. > > The Mac HD is NOT scsi, but rather uses the disk drive port on a Mac. It > > was designed to work with older non scsi macs (128k 512k), and could be > > daisy chained thru the disk drive ports (at one point, I think I had 3 HD > > 20s and a 400k drive connected to my 128k Mac). > > > > The IIgs has a disk drive port, and visually, the 3.5" drive I have for > > it looks just like the 3.5" drive I have off an old Mac Classic (I have > > to go off visual, as the one from the Classic has no labels or other > > markers beyond the apple logo... don't know why, that is the way it was > > when it was given to me). > > > > I was hoping maybe they used the same ports, and I might be able to use > > the HD 20 with my IIgs so I can add a hard drive to it. > > > > Anyone info would be great. > > > > > > > > -chris > > > > <http://www.mythtech.net> > > > > >

24 years

looking for documentation for 1963 minuteman missile computer

by cmurillo＠emtelsa.multi.net.co

Rocket science is in the rocket engine. Navigation is not that hard, comparatively... At 03:12 PM 10/15/01 -0400, you wrote: >Let's hope they're all bought up by domestic hobbyists... > >;-) > >-dq -------------------------------------------------------------- Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org

24 years

Need info/manuals/software - Microtest 14 CD Dicport Tower

by rhblakeman＠kih.net

Anyone have one of these in use and could possibly be a source for a copy of the manual, disks, etc? Just bought one on auction but of course no docs or software and this is NOT SCSI to the server, it works on the LAN and has SCSI drives in it. Even if someone can send me the manual so I can scan or copy it and send it back that would be great too and maybe I might have something excess here (besdies actual cash to pay the shipping and materials back) to express my thanks. Russ Blakeman Clarkson, KY USA

24 years

Cromemco Pick-up on 10-13-01

by mhstein＠usa.net

John, Gee, just dumpstered 3 System 3's and 2 CS100's; since we're now shipping all our Toronto garbage to Michigan, ya coulda stopped at the dump on your way back & picked them up as well :-) However, although the rest of the chassis (2xCS420, 2xCS300, 1xCS2H, 3xCS1H, 1xSystem3, 1xZ2, BRZII, C5 etc., and nice and clean at that), will probably have to go as well 'cause nobody wants to come up here to the frozen north, the cards, manuals & software may be around a little longer, so let me know if ya need anything. mike ---------------------- Date: Sun, 14 Oct 2001 18:54:05 -0500 From: "John R. Keys Jr." <jrkeys(a)concentric.net> Subject: Cromemco Pick-up on 10-13-01 This pass Saturday was a long drive MN to IL (12 hours total drive time) to pick up 2- Cromemco System Three's, a Systemv CS-300, one new in the box KB for these systems, lots of manuals and software for them, a Cipher 1600BPI tape unit, a model BRZ-III fan for the units, and some parts. All will have to be cleaned up as they are pretty dirty and need some loving care. The guy had over 1600sq feet of computer stuff he is selling most on eBay.:-( At a local thrift I got some Sega master stuff, like the 3D glasses that have been selling on eBay for $50, I got mine for a couple dollars. Got a Virtual Boy system for $11.99. Got some Atari 2600 stuff also they were selling cartridges for 80 cents and they had two big boxes full. Now I will start the clean-up and entering all the info into the database (my paper notebooks). Keep computing John

24 years

TO8 soundchip

by optimus＠canit.se

What was the sound chip in the Thomson TO8? -- En ligne avec Thor 2.6a.

24 years

Burroughs E6000

by mhstein＠usa.net

Ah, yes, remember them well, and the mechanical B series they replaced; might even still have some parts and ledger cards... Those were the days, programming with metal punches and tweaking and debugging with a file... made great desks when they were scrapped... But while on this topic, anybody out there doing anything with Burroughs L series or B80/90 systems? Have tossed most of it out, but still have some cards, manuals and a cassette drive with controller if anyone's at all interested. And of course some paper and mylar tape stuff... And some Burroughs calculator manuals, mechanical and electronic.. mike ---------------------------- Date: Sat, 13 Oct 2001 17:29:07 -0500 From: "Patrick L. Boland" <plboland(a)home.com> Subject: Re: Burroughs E6000 As late as 1977 ! was using two Burroughs E6000 computers to perform the function of loan payment application. The loans were for health club membership in the Chicago area and a great deal of the rest of the upper midwest area. We had over 50,000 loans outstanding at any time and processed from 1,000 to 3,000 loan payments a day. The machines we had were magnetic stripe ledger card readers and they would punch an output card with the results of the processing of the transaction. The latest information about the loan kept on a master deck of cards was replaced with the card that was punched as a result of the transaction on the E6000. The update was performed on a daily basis using the 085 sorter and a reproducer/collater. During the last 8 to 12 months of the use of the E6000, while a conversion was being worked on, we used only one E6000 and kept the other one for spare parts. Burroughs had run out of spare parts.

24 years

SCSI Info requested by David Woyciesjes

by jismay＠agamemnon.unixboxen.net

I have mirrored the three scsi documents to my own site. I will keep them up and available for the forseeable future. http://agamemnon.unixboxen.net/scsi

24 years

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test-drb October 2001