test-drb

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101090 discussions

by jrkeys＠concentric.net

Good Day I have been given a chance to submit a wish list to NASA for artifacts for the museum I started here in Houston and wanted suggestions from the list of items you would want to see on display from NASA's past. Please email me off list or you can share your input with the list. Thanks John

18 years

single transistor projects?

by jhawes＠hawestv.com

Rufus Turner wrote a fabulous book on single-transistor projects. I reviewed the book for Amazon. See... http://www.amazon.com/125-One-Transistor-Projects-Rufus-Turner/dp/0830695370 You have to be careful with early transistor projects. Most of the transistors are germanium. After making circuit changes, you can build these circuits with modern, silicon parts. At minimum, the silicon transistors require changes to the bias circuits. (Sometimes, you'll need to make other changes, too.) For help with the changes, refer to my page at... http://www.hawestv.com/transistorize/germanium1.htm Equivalents to some early semiconductor types are unavailable today. (Or available only as used, or new-old stock parts). Such semiconductors include tunnel diodes, unijunction transistors and most early FETs. Redesigning circuits with these parts could be rather difficult. James T. Hawes

18 years

Two recent vintage computer sightings in movies

by roger.holmes＠microspot.co.uk

On 9 Apr, 2008, at 18:00, cctalk-request at classiccmp.org wrote: > > On Tue, 8 Apr 2008, Sellam Ismail wrote: > >> Right now I'm watching TV (hotel cable) and George Carlin is on >> (AWESOME!!) and in his set there's an original Macintosh (or it >> could be a >> 512 or Plus) in the background. I don't know the name of this set. >> >> Isn't someone maintaining a list of these somewhere? > > It would be an interesting (and time consuming) project. I've > done > something similar with appearances of the SAGE computer equipment: > > http://sturgeon.css.psu.edu/~mloewen/Q7/ > > Stan Brewer has a page for the Burroughs B-205 (mostly the > console), > with a list of appearances on screen: > > http://www.angelfire.com/scifi/B205/index.html Mike Milsom has a page for some of the appearances of ICT 1301 consoles: http://milsom.mysite.orange.co.uk/1301/1301f.htm We are always on the look out for more, but we already have Doctor Who, James Bond and Blake's Seven appearances.

18 years

Two recent vintage computer sightings in movies

by tiggerlasv＠aim.com

While it's not a movie, if you watch carefully on the Star Trek: Next Generation pilot episode "Encounter at Farpoint", you'll see what appears to be a VT100 sitting on a pedestal on the bridge. . . an interesting prop. ;-) T

18 years

Fwd: [comp.sys.sgi.hardwar...] Power Challenge XL available

by legalize＠xmission.com

This message has been forwarded from Usenet. To reply to the original author, use the email address from the forwarded message. Date: Wed, 9 Apr 2008 00:39:44 -0700 (PDT) Groups: comp.sys.sgi.hardware,comp.sys.sgi.admin From: "fischerc at itam.cas.cz" <fischerc at itam.cas.cz> Org: http://groups.google.com Subject: Power Challenge XL available Id: <5df4658f-99e8-43a5-b318-153140a98ba1 at k13g2000hse.googlegroups.c om> ======== Hi everybody We have a rather big piece of HW: SGI Power Challenge XL (6 x R8000 at 75 MHz, 1G ram, a few 2-4Gb SCSI discs) available here in Prague (CZ, EU). The computer was cleanly shut down on May 5, 2004 and since that time was not touched. We intend to scrap it now. If anybody wants to have some spare parts or even the complete beast, let me know within 1-2 months. I regret to say, that this was the last SGI machine we have here. Anyway, I would like to express my thanks to the SGI admin comunity for all the help I've received in past years. Sincerely yours, Cyril F.

18 years

HP-1000 HP-IB / GP-IB IEEE-488.2, etc

by Tim＠Rikers.org

HP-IB, GP-IB and IEEE-488.2 seem to refer to the same more-or-less compatible bus architecture. http://en.wikipedia.org/wiki/IEEE_488 I'm hoping to get GP-IB storage setup on my HP-1000 systems eventually. I've picked up: HP 59310-60101 "BUS INPUT/OUTPUT INTERFACE" - low speed GP-IB card HP-9122C - dual 3.5" GP-IB floppy drive (Thanx Stan!) However I don't have the cable to wire from one to the other. The drive has a standard IEEE-488 connector: http://en.wikipedia.org/wiki/Image:IEEE-488-Stecker2.jpg But the controller has a 50 pin card edge connector. Anyone have a spare cable? I've been looking at some GB-IB software tools: * http://www.hp9845.net/9845/projects/hpdrive/ emulates GP-IB drives on win32 * http://www.hp9845.net/9845/projects/hpdir/ read and write to some GP-IB media and filesystems from win32 * http://linux-gpib.sourceforge.net/ Linux GP-IB drivers and libraries. This does NOT include drive emulation or access, but it aimed at sensors and other devices that speak GB-IP Not all drives use the same protocol over GB-IP. Bitsavers has documents that cover the AMIGO and CS/80 command sets: * http://www.bitsavers.org/pdf/hp/disc/ Lots of drive docs including: * http://www.bitsavers.org/pdf/hp/disc/subset80_Jul83.pdf SS/80 and by reference some of CS/80 I do not currently have a GP-IB interface for a PC. The National Instruments PCI-GPIB cards seems popular on eBay. There are also USB-GPIB converters from NI and others. The ISA or SBus cards go for less, but then I need to find a machine with one of these slots. :) I understand that HP-7920 and HP-7925 drives were AMIGO flavor GP-IB drives. Perhaps the HP-7905 and HP-7906 as well? I'm not quite sure where the GP-IP buss comes in the picture. There is normally a contoller (13037-60028) interface between the drives and the host computer interface (02640-90042?) I presume that the bus on one side of the 13037 is IEEE-488 but I'm not sure which. Can the 026xx cards directly attach to GB-IP drives? How does the shared storage through a 13037 controller work? are they all just IDs on GB-IB? Any insight appreciated. Any hardware donations greatly appreciated. :) -- Tim Riker - http://Rikers.org/ - TimR at Debian.org Embedded Linux Technologist - http://eLinux.org/ BZFlag maintainer - http://BZFlag.org/ - for fun!

18 years

Polymorphic System88 disk

by cclist＠sydex.com

> Date: Tue, 8 Apr 2008 05:59:37 -0700 > From: dwight elvey Will all respect for your efforts, Dwight, at least you knew the origin of the diskette and had a faint idea of what might be on them. You haven't lived until someone shoots you a bunch of diskettes with everything being unknown--the modulation technique, the code representation, the data rate or track spacing or byte width, much less the file system. Your Polymorphics floppies sound a lot like a bunch of diskettes I got in recently from a manufacturer's in-house PCB stuffing robot. The format appears to be a "roll your own". It's hard to say which is the most fun--diskettes discovered to be GCR where you have no idea of what the group size is, nor what the groups correspond to. Or diskettes written on something like a typewriter where the code's not ASCII, nor does A immediately precede B--and you have nothing that says "this is a printout of what's on the diskette". Hint: You start with a statistical analysis of the pulse stream and go from there. For me, it's a lot of fun, ferreting out things by bits and pieces until the big picture emerges. Cheers, Chuck

18 years

The Unix Haters' Handbook

by cclist＠sydex.com

> Date: Mon, 07 Apr 2008 14:04:01 -0400 > From: Sridhar Ayengar > That's bull. There are ways to make grep output something like "No > matches" without breaking a pipeline that uses it. I suggest that > perhaps those who say "They're the kind of thing people who don't use or > understand pipes will say." are the ones who truly don't understand pipes. If anything, my issue with the evolution of *nix is that the original philosophy of "write a bunch of simple tools and hook 'em together via pipes" seems to have been deprecated in the almost 30 years since I began using Unix. There seems to be a trend of proliferating options. Quick, who can recite from memory all of the switches and their meanings for GNU tar? I can't. Who can understand the tar man pages? Who knows it to be accurate for the particular incarnation of tar that they're using? Cheers, Chuck

18 years

Free to a good home - IBM PS/2 stuff

by ddsnyder＠zoominternet.net

Somethings a miss here... resending... On Mon 04/ 7/08 7:36 PM , "Daniel Snyder" sent: To all, I am unloading all of my PS/2 gear, most of the systems may be too heavy to ship, but will part out. I'm out of space and my real interests have always been DEC, almost 30 years now. This is by all means not a complete list, I will continue this list as I uncover more. All has been stored indoors in a dry and heated area. 2 - Model 25's B&W (ISA) 2 - Model 30's (ISA) 1 - Model 65 tower (MCA) 1 - Model 80 tower (MCA) 1 - Model 50 desktop (MCA) memory modules, video, esdi drives, scsi drives, some good working floppies. I have most if not all of the config disks and copies on cd. I think the 80 has a worm drive and colorado/maynard? QIC tape, spare motherboards for the 50, 60, 70 and 80. Would really prefer local pickup (or relay or within 100 miles) That's all for now Dan Snyder Butler, PA 16001

18 years

FS: QBUS boards, 4K memory boards, Sharp PC-3000 items

by julianskidmore＠yahoo.com

Hi Ed, I've been trying to use my BA23-based microPDP11/73 recently. I got as far as installing RT11 and Fig-Forth :-) , but then the power supply blew a cap so everything has been mothballed since Friday! > DEC "A/D FOR 1103 5012094E-P2" My guess is that the A/D won't work if it's for an 11/03 > DEC "4 CHANNEL D/A A6001 5012107 DP4" But the D/A sounds interesting! > DEC "PROG REAL TIME CLOCK M7952 5012108B" As does the RTC. > DEC "M9060 5017109" load board As does the Load board - I guess that board is there to simulate loading on a PSU so you can test the PSU? Obviously I'm happy to pay for the postage, in fact is sounds like good value! -cheers from julz @P ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years

Help with ICL power supply fault (Farnell SMPS)

by RodSmallwood＠mail.ediconsulting.co.uk

I can't be of much help re PSU . However I do know the machine. RAIR were a customer of mine and I saw the first one ever built. RAIR was run by two guy's called Mark Potts and David Fogden. Mark went to the States and I have no idea what happened to Dave. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of John S Sent: 08 April 2008 12:22 To: cctalk at classiccmp.org Subject: Help with ICL power supply fault (Farnell SMPS) Hi, I have an ICL PC2 CP/M box (like this: http://www.old-computers.com/museum/computer.asp?c=752) which has a faulty PSU, I am hoping someone here can advise me. The PSU is a Farnell N100/F4190 SMPS, looks like a high quality unit with nice screw terminals for mains in and DC out. When fired up with 240V AC and a dummy load the output voltages are: 12V output=1.1V 5V output=2.3V -12V output=-5.9V The other worrying thing is it is also drawing 100W power (measured with a one of those plug in mains meters from Maplin), whilst the dummy load is around 20W (split between +12V and +5V). I've checked all the capacitors with multimeter and ESR meter, and all seem fine, and none are bulging or obviously overheating, DC resistance on each of the output connections to ground is around 60 ohm. I couldn't find a short so I don't know where all the power is going to, I suspect there is some protection circuit kicking in? I don't have a circuit diagram, so my first plea does any one have one please? The circuit has few ICs, and mostly transistors. There is a CA339E quad comparator chip, and a IL201 opto isolator (I'll try and check these), but no nice single IC controller. My current strategy is to apply +5V to the comparator chip and apply voltages to the output to try and see some feedback, and also apply 50V DC to the input in the hope this is enough to start up the oscillator (I think this is a small group of transistors, resistors and small capacitors near a small torial transformer, which then feeds to the main conversion transformer). Any suggestions gratefully received, Thanks, John _________________________________________________________________ Get Hotmail on your mobile. Text MSN to 63463 now! http://mobile.uk.msn.com/pc/mail.aspx

18 years

HP-21xx assembly

by Tim＠Rikers.org

Is there a pdf version of jeff's asmref.html? mirror: http://rikers.org/hp2100/jeff/asmref/index.html with some edits: http://rikers.org/hp2100/asmref.html I've been fixing obvious errors, but I'm not sure if the errors were >from OCR or in the original. Also I don't have the diagrams in there >from the original docs. I'm looking for docs on the REL tape format(s) to add support to asm21.pl The relocatable library docs don't seem to cover the tape format itself, just the calling convention etc. http://bitsavers.org/pdf/hp/21xx/02116-91780_RelocatableSubroutines_Oct1973… Pointers appreciated. :) -- Tim Riker - http://Rikers.org/ - TimR at Debian.org Embedded Linux Technologist - http://eLinux.org/ BZFlag maintainer - http://BZFlag.org/ - for fun!

18 years

Sun keyboards available

by mcguire＠neurotica.com

A friend in Maryland has 13 (yes thirteen) Sun type 5 keyboards that need to find a new home. He is asking $10 plus the cost of DHL ground shipping for the lot. He needs them gone by Thursday 4/10 or they'll hit the trash. Email me for his contact information. -Dave -- Dave McGuire Port Charlotte, FL

18 years

VCF/Midwest - Just 3 weeks away

by pat＠computer-refuge.org

In case you hadn't noticed yet, this year's Midwest VCF is just under 3 weeks away - April 26 and 27. We still are working on getting exhibitors and speakers for the event - drop me a line if you're interested in either. Sign up to exhibit soon! Vince Briel will be at the event this year, doing a Micro-KIM and Replica One workshop. More details at: http://www.vintage.org/2008/midwest/ Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years

VT14 engr drws

by aek＠bitsavers.org

they are part of the GT40 drawing set http://bitsavers.org/pdf/dec/graphics/GT40_EngrDrws.pdf

18 years

VR14 Engineering Drawings?

by ohh＠panix.com

Hey, all: Does somebody out there know of a set of DEC VR14 engineering drawings they could point me to online? Thanks! -O.-

18 years

advent sources?

by bqt＠softjar.se

"Zane H. Healy" <healyzh at aracnet.com> skrev: >> trolling through some old mit backups... >> >> I found a copy of "advent" fortran source from 1979. Is that interesting >> to anyone? It looks more complex than the Crowther sources but I have >> no idea. >> >> I also found a file with PDP-6 Space war sources. Anyone interested? >> It mentions a "340" display. It's an ITS "ar" file which I think would >> be easy to pull apart back into ascii files. >> >> -brad > > Any chance of a copy of DND in there? Especially for RSTS/E or RT-11? I'm > aware of what is at http://members.tripod.com/~rancourt/default.htm I have atleast ADVENT compiled and running under RSX. Should work fine under RSTS/E as well. Just check on MIM::SYS$GAMES: Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

18 years

RSX-11M sysgen

by mcguire＠neurotica.com

Hey folks. Super dumb question here. I'm trying to run a sysgen of RSX-11M v4.2, and when I try to boot the new executive at the end of the sysgen run, it drops into XDT saying "MISSING EXECUTIVE COMMON (S)". I've run through it three times, and I've made absolutely certain that I've said "Y" to the "Executive Common" question (#6 under Executive Options). The most annoying thing about this is that I'm sure I ran into this the last time I did an RSX-11M sysgen, in 1986, and solved it...but for the life of me I can't figure it out this time. Can anyone shed some light on this? Thanks, -Dave -- Dave McGuire Port Charlotte, FL

18 years

cctalk Digest, Vol 56, Issue 8

by cclist＠sydex.com

On 7 Apr 2008 at 12:00, cctalk-request at classiccmp.org wrote: > Date: Sun, 6 Apr 2008 14:45:24 -0400 > From: "James Fogg" > It might be easier to go to a metal shop, autobody shop or > Heating/Ventilating/Air Conditioning shop. Any shop like that can make > panels to your exact size in a few minutes (aluminum works best). You can > have a body shop paint them (wait until they are spraying your color > anyways or it gets expensive) or you can use spray paint cans. Any music store dealing with pro road gear will have tons of 19" rack accessories, including blank panels. They also carry the hard-to- find cage nuts, trays, fans, ventilation panels, etc. etc. Cheers, Chuck

18 years

WTD: Sun 501-1443 framebuffer?

by silvercreekvalley＠yahoo.com

Hi, Looking for a 501-1443 or similar framebuffer to fit a Sun 3/80. This uses the P4 bus. Its not the same as a 3/60 cg4 framebuffer unfortunately - I think the main difference is the position of the video sockets, but there may be others... Good price paid, or can trade for other items (Sun or DEC). Cheers Ian. ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years

PDP 11 owners in Canberra, Australia

by doug＠stillhq.com

It is now official... Having now got my RL01 drive in my PDP-11/34 to seek, and read a sector full of zeros, I would love to know if there are any PDP 11 users in Canberra, who would be able to load up a bootable RT11 image onto a RL01 disk pack. Heck, anybody within a couple of hundred km would also be cool.. Having known data on a disk pack would be very handy. Thanks, Doug

18 years

19" rack blanking panels

by James＠jdfogg.com

> Looking for various parts to complete a 19" rack > of various vintage servers :) In particular I'd > like to get some blanking plates (any size) in > black if possible, cable tidies, and empty 1U/2U > or larger server boxes. > > Anything considered - I'm in the UK It might be easier to go to a metal shop, autobody shop or Heating/Ventilating/Air Conditioning shop. Any shop like that can make panels to your exact size in a few minutes (aluminum works best). You can have a body shop paint them (wait until they are spraying your color anyways or it gets expensive) or you can use spray paint cans.

18 years

FS: QBUS boards, 4K memory boards, Sharp PC-3000 items

by listmailgoeshere＠gmail.com

Hi list, I have the following for sale: 1) 4 * QBUS board: DEC "A/D FOR 1103 5012094E-P2" DEC "4 CHANNEL D/A A6001 5012107 DP4" DEC "PROG REAL TIME CLOCK M7952 5012108B" DEC "M9060 5017109" load board 2) 2 boards marked "4K MEMORY BOARD FOR 118 NICOLET INSTRUMENT CORP 000-7488-04 10/14/75" Each one contains 40 ICs marked "TMS 4060JL BP7901" and then 15 chips' worth of 74-series logic. One of these boards seems to have been used for spares or something, as it's missing all its resistors, capacitors and one of the TTL ICs. The connector on these is an 86-way 0.1" edge connector. 3) The original box and manual, plus original Sharp (still boxed) Laplink cable, for a Sharp PC-3000. There is a PC-3000 *in* the box, and you can have that too, but it's got a smashed screen. Probably still works other than that, no promises though. There's also the (likely unobtainium these days) adaptor from the PC-3000's mini-serial port to an actual DE9 connector. Please make an offer by private mail if you want any of this. I'll ship anywhere, but you pay the shipping. Items are located in West Yorkshire, UK. Ed.

18 years

19" rack blanking panels

by silvercreekvalley＠yahoo.com

Hi Austin, That would be great. Thanks. The blanking panels and other 19" rack bits seem quite pricey, especially if you need a lot of them which you typically do when building up a rack. All the best Ian. ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years

19" rack blanking panels

by silvercreekvalley＠yahoo.com

Hi, Looking for various parts to complete a 19" rack of various vintage servers :) In particular I'd like to get some blanking plates (any size) in black if possible, cable tidies, and empty 1U/2U or larger server boxes. Anything considered - I'm in the UK Many thanks Ian. ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com

18 years

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