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

Looking for an IBM SP/2 (the supercomputer, not a typo)

by jplist2008＠kiwigeek.com

I was contacted by a guy who works for a computing lab at a major US University on the East Coast who is looking for an SP/2 they can display in their lobby. I have one, but it'll be a monumental pain in the <cough> to get out of here. I wanted to drop a line and see if anyone had one they'd be willing to part with in the US, preferably near-ish to the right coast. Thanks all; - JP

10 years, 5 months

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Preferred way of substituting TFT for CRT Monitor?

by Martin.Hepperle＠dlr.de

Yesterday I checked the 9000/217 98204B combo with my oscilloscope and I can confirm the 25kHz horz. frequency (1V down to 0.3V pulses every 40 us). I cannot measure the pixel clock as my oscilloscope was too cheap (I had to compromise) and thus cannot sample at higher MHz rates. I only see that it goes from 1V to approx. 2.2V. Just for my understanding: if I do the math: 512 pixels x 400 rows = 204'800 pixels at 50 Hz I end up with 10.2 MHz and at 60 Hz = 12.3 MHz. There is more "room" required for the retrace time, probably another 10% or so? So I understand that the monitor must be capable of ~25 kHz and 10...14 MHz and that I better try before buy. It is difficult to find specs for these HP 9000 video boards. In case it is useful for someone ... my list below is still missing DIO-bus type (1 or 2) and signal frequencies. 98204B Video Board medium resolution (512x390) monochrome for 35721 monitor, DIO-1 98542A Monochrome Video Board medium resolution (512x400) monochrome 98543A Color Video Board medium resolution (512x400) 16 colors 98544B Monochrome Video Board high resolution (1024x768) monochrome 98545A Color Video Board high resolution (1024x768) 16 colors 98546A/B Monochrome Video Board medium resolution (512x390) monochrome alpha/graphics, for 216/217 display compatibility (a pair of cards, compatible with 2136 and 217 displays (512x390, 25x80)) 98547A Color Video Board high resolution (1024x768) 64 colors 98548A Monochrome Video Board high resolution (1280x1024) high performance 98549A Color Video Board high resolution (1280x1024) high performance 98550A Color Video Board high resolution (1280x1024) high performance 98700A Graphics Display Station high resolution (1024x768) 256 colors 98710A Graphics Accelerator optional for 98700A 98720A High Performance Board high resolution (1280x1024) nur HP-UX, requires 98724AA interface and 98784A monitor 98730A High Performance Board high resolution (1280x1024) nur HP-UX 98722 memory upgrade optional for 98720A Martin

10 years, 5 months

3
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Data Recovery Services

by jcw1231＠pacbell.net

I need to recover some files from a SCSI drive that failed over a decade ago.? Are there data recovery services that can determine if the files on the drive can be recovered or can actually do such a recovery?? Now that I think about it, I recently also had a fairly new Western Digital drive suddenly no longer be seen by any Windows PC and I really need many of the files on it.? Can anybody here tell me if drive manufacturers offer recovery services? I ask this since I saw a post somewhere that Seagate offers some sort of file recovery via cloud storage. As you can tell, I am by no means super-knowledgeable about modern systems since I am from the WANG 2200 MVP, WANG PC, and WANG Basic 2C era, and still have a few pieces of WANG hardware collecting dust. I apologize if I am posting this to a group where it is inappropriate. Thank You, John

10 years, 5 months

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HP 2610A printer

by jwest＠classiccmp.org

Someone asked a question about it privately, I researched today and found the answers so I'll post here as well for posterity. The HP 2610A printer that I have.... 2610A was the HP designation for the Control Data Corporation 9322 Printer. HP sold the printer basically unmodified (as far as I can tell) and slapped their label on it. Mine seems to be in rather good condition so I suspect it will be restorable. In addition, I unearthed a full set of manuals/docs for the thing. Most manuals I have are HP ones, but a few in the binder are CDC manuals for it. At the same time, I also found several binders of docs for the HP 2754 (also have one of those). 2754 is the HP designation for the Teletype model 35KSR. HP sold the printing terminal/reader/punch with minor modifications and slapped their label on it. I have a complete set of docs, mostly HP branded but some (wiring lists, lubrication, disassembly, etc.) are Teletype branded. Various select pictures of the manual pages are at https://www.flickr.com/photos/131070638 at N02 J

10 years, 5 months

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DECMate III +

by rodsmallwood＠btinternet.com

Does anybody have any experience with these. This one has the hard disk. You can hear it seek on startup. Setup works but it does not boot from the hard drive and just halts when presented with a system disk on a floppy. Rod

10 years, 5 months

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Preferred way of substituting TFT for CRT Monitor?

by Martin.Hepperle＠dlr.de

> ------------------------------ > Message: 8 > Date: Mon, 18 Jan 2016 15:39:38 -0500 > From: "js at cimmeri.com<mailto:js at cimmeri.com>" <js at cimmeri.com<mailto:js at cimmeri.com>> > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org<mailto:cctalk at classiccmp.org>> > Subject: Re: Preferred way of substituting TFT for CRT Monitor? > Message-ID: <569D4D8A.4080505 at cimmeri.com<mailto:569D4D8A.4080505 at cimmeri.com>> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > . . . > You need a monitor (or converter) that supports 25khz. Here's the extent of my own research: > > 25khz 640x400 SOG monitors > > LCD > - NEC LCD1510+ (not tested) > > - NEC LCD1810 (LA-1831JMW-1) > Mac + PC -- fair performance, poor scaling. > HP 300/98543 -- works, but banded background cannot be completely > faded to black (I got rid of my 1810's for this reason). > > - Viewsonic Vp150 > HP300/98543 -- works well, great background, colors only fair. > > - Viewsonic VP181 > HP 300/98543 -- not perfect but can be adjusted ok. > banded background *can* be faded to black. > > - J. > ------------------------------ ah, this seems to become difficult... Thanks for the data and recommendations. I will have a look at low H-freq. monitors on ebay, maybe I have to revert to an old, heavy and large CRT. I see that many Viewsonic TFT monitors start at 24kHz. I also found http://www.ebay.de/itm/Gonbes-GBS-8200-CGA-15kHz-EGA-25kHz-Arcade-JAMMA-PCB… The technical data (http://www.extremehardware.webspace.virginmedia.com/ebay_images/GBS-8200.pdf) says: CGA / EGA - Auto Scan: 14.5 kHz - 16.5 kHz 23.5 kHz - 25.5 kHz <<<< this may fit the HP card? 3 0.5 kHz - 32.5 kHz Martin > ------------------------------ > Message: 9 > Date: Mon, 18 Jan 2016 21:07:27 +0000 > From: tony duell <ard at p850ug1.demon.co.uk<mailto:ard at p850ug1.demon.co.uk>> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org<mailto:cctalk at classiccmp.org>> > Subject: RE: Preferred way of substituting TFT for CRT Monitor? > Message-ID: > <A8192EF71C5C4946A240D25EDC8F9448027E4311 at EXMBX15.thus.cor<mailto:A8192EF71C5C4946A240D25EDC8F9448027E4311 at EXMBX15.thus.corp> > p<mailto:A8192EF71C5C4946A240D25EDC8F9448027E4311 at EXMBX15.thus.corp>> > Content-Type: text/plain; charset="us-ascii" > > > > indeed this machine has a 98204B video board (intended to work with a 35721 > monitor, > > which I don't have). I have not yet found the specs for its composite signal. > > It is normal composite video voltage levels with faster-than-normal horizontal scan rate. > If you have a frequency counter (or something that can be used as one, then put the 98204B > text board in the topmost position of the 9817, leaving out the graphics board > (the machine ill run without it) and take the top casing off the 9817. Take care to avoid the > live mains and worse on the PSU board, power it up, and check the HS and VS pins of the 6845 > (the only 40 pin IC on the board) > > Most, if not all, cheap composite video converters assume US or European TV rates and are > not going to lock to this thing. If anybody knows of an interface that will work, > I'd be interested to know about it too (I have a 9817 with the 98204B card, fortunately > I do have the right montor for it). > > -tony > ------------------------------ Tony, thank you for your explanations. As I understand, the unusual low horizontal frequency is the main problem. I saw that the card has a switch to toggle 50/60Hz vertical frequency (EU/US, original setting was at 60 Hz), but this did not help. I will see whether I can use my oscilloscope to catch the frequencies as I could not find a technical description of the 98204B. ... and I thought today such a simple problem could be easily solved with modern technology... Martin

10 years, 5 months

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How to set this drive up?

by tulsamike3434＠gmail.com

On 01/19/2016 03:30 PM, Mike wrote: > Can someone please help me set this drive up and what should the little switched be set to on the back for drive 2 > > Sent from my iPhone. > -- *Mikes ATC Shop A how To Youtube Channel https://www.youtube.com/channel/UC5OzVS_CmCOLjjztbRiPuKQ?view_as=public 405-481-4715 * OOps I guess some pictures would be nice.. I would like the 3 1/4 drive to be my 2nd drive.* *http://nishtek.com/Ebay/1581_3.jpg What plugs in to what and *here are my questions *1/ there is a serial port next going from right to left there is a interface theb the tohhlr and i am not sure hie ti ser them then rge powre and last but not least the on and off switch.. Can this be use as a 2nd drive if so hoe do zi hook it up the right way? thank you sll in sdvsnce...

10 years, 5 months

3
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Retrocomputing on StackExchange...

by geneb＠deltasoft.com

http://area51.stackexchange.com/proposals/94441/retro-computing I think this is actually a pretty good idea and StackExchange is a great platform. As of right now it needs 11 more people following it (and more questions). tnx. g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

10 years, 5 months

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vaxstation 3100 boot issue?

by jwest＠classiccmp.org

I am not a vax person, I'm posting this for someone else. Could anyone offer advice for me to relay back to this person (other than reseating boards, cleaning connectors, or other non-vax-specific stuff)? -------------- I was hoping you could help me answer a question. I have a Vaxstation 3100 that, when I power it up, fails the test with the following LED readout: 1000 1010 which indicates the failure is in the memory management test. Any suggestions on further troubleshooting I can do to figure out how to get this machine booting? My plan is to run OpenBSD on it and see if I can revive some of the ports for this platform. I'm doing something similar on my Alphastation 500/400. -------------- Best, J

10 years, 5 months

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VAXology

by geneb＠deltasoft.com

VAXCINATION A "preventive training" provided to potential users of the VAX system to prevent software foul-ups other than deliberate. VAX-RAY A high-energy screening to determine whether a user is qualified to have a VAX I/O station on his floor. VAXWAGEN What everyone jumps on after the VAX is approved VAXING AND VAXING is the successful use of the VAX during WAILING the full moon. Wailing is the less successful alternative during the other lunar phases. VAXMAS The day the VAX come in. VAXCILLATE To oscillate between possible ways to administer VAX training. VAXCIMILE A German copy of the VAX. VAXECUTION The denial to a user of future access to the VAX. NO VAX TO A put-down administered to those withour a dial-up GRIND line, and hence no acces to the VAX, as in "Infidel! Let that terminal alone! You have no VAX to grind!" VAX AND THE SINGLE GIRL A relationship with much potential. VAXI! VAXI! A cry heard and unheeded by cruising VAX personnel as they go around the corridors, hailed by frantic users-to-be who desire a high-tech ride on the VAX. AVAX A low-flying VAX with radar. VAXTENUATING The generic excuse used to explain delays in the CIRCUMSTANCES delivery of the VAX. VAXCENTUATE To underline the importance of the VAX. VAXTERMINATION The perennial zapping of mysterious files from the VAX. VAXCINE An abbreviation for "I have seen the VAX!" VEDI, VENI, That victory cry - "I saw, I conquered. The VAX VAXI came!" VAXERCISE An early morning workout on the VAX. VAXUUM A computer room without a VAX. Abhorred by nature. VAXIMUM Keeping silent to the max about the startup of the VAX. VAX POPULI The users. VAX BUILDUP The result of not using the file delete command often enough. VAXACHUSETTS DEC country. INCOME VAX What one shouts when the VAX is delivered. VAX-FREE BOND A special relationship with a non-VAX computer on Wall Street. THE BLUE VAX World War I medal honoring high-powered computing. Also (modern): A VAX made by Smurfs. VAXIMA The height of ecstasy reached while computing on VAX. Also (archaic): Mother of VAX. VAXIS What the world of computers rotates on. GRODY TO THE VAX Like, y'know, the VAX in the valley fer shure! VAX-CARS What G.M. doesn't make. VAXICDENT The spilling of coffee on a VAX terminal. VAXONERATED The honor of DEC. VAXLE That to which the wheels of the VAX are attached. VAXIDERMIST One who lives by the dictum "You can take the VAX and stuff it!" THE VAX OF Everything you ever wanted to know about the birds LIFE and the bees (and the bugs in the VAX). VAX Long-haired northern cousins of the buffalo, used as beasts of burden in Tibet. TO VAX ELOQUENT The act of preparing a glossary for the VAX. g.

10 years, 5 months

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MICRO LSI-11 BA23 available

by jwest＠classiccmp.org

Someone would like to move out a Micro LSI-11 in a BA23 pedestal cabinet. Location is Northwest Ohio. Email me off-list if interested. J

10 years, 5 months

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Preferred way of substituting TFT for CRT Monitor?

by Martin.Hepperle＠dlr.de

> What is the exact model number of the video card? > > I am assuming it's an HP98204 of some flavour. The HP98204A uses (US, RS170) TV rates and > can be connected to any composite monitor that expects that. A lot of TVs (rather than monitors) > in Europe can accept that and have composite inputs still, perhaps on a SCART socket. > > However the more normal video card in the 9000/217 (aka HP9817) is the HP98204B. This does > have a composite output but at rather odd rates. There was a specal 'HP' (actually a Samsung > chassis, and it shows!) monitor for this. I thinkl finding somethng that will lock to the video output > of that card is going to be 'interesting' > > Do you have the original HP monitor? If so, what model is it? > > -tony Hi Tony, indeed this machine has a 98204B video board (intended to work with a 35721 monitor, which I don't have). I have not yet found the specs for its composite signal. I find many $20 converters/scalers for composite to VGA on amazon or ebay but I am not sure whether such a thing would work for me. Obviously they seem to work for many computer games (SNES, Nintendo) and for some hobby computers like C64, Amiga etc. (e.g. "RCA Composite AV S-Video to VGA Converter Box"). Next I see $50 devices like "Mini Composite RCA CVBS AV To HDMI Converter (Input: AV; Output: HDMI)" which may also be an option, but only seem to scale to a fixed HDMI resolution, which may be unsuitable for the HP-resolution of 512x400 (or 512x390?). Finally I see $200 converters/scalers which are a bit expensive just for trying to see whether they work (e.g. "Atlona AT-AVS100 Composite/S-Video to Component/VGA Scaler"). I have also contacted Jon from the HP-Museum to see what their solution is. Regards, Martin

10 years, 5 months

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DEC Rainbow PC100-A

by shadoooo＠gmail.com

> So if all LEDs remain on, that most likely means the CPU is not able to execute instructions at all. > It might mean a busted CPU, busted ROM or CPU bus, or missing power or clock. Yes, that's exactly my feeling... so a schematic would be very good to try to diagnose an evident problem as missing signals, etc, knowing what they should be from the circuit diagram. I will try to check something easy at first, knowing the pinout of the microprocessors... but after that I suspect it will be harder. Andrea

10 years, 5 months

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cctalk Digest, Vol 19, Issue 18

by shadoooo＠gmail.com

> So if all LEDs remain on, that most likely means the CPU is not able to execute instructions at all. > It might mean a busted CPU, busted ROM or CPU bus, or missing power or clock. Yes, that's exactly my feeling... so a schematic would be very good to try to diagnose an evident problem as missing signals, etc, knowing what they should be from the circuit diagram. I will try to check something easy at first, knowing the pinout of the microprocessors... but after that I suspect it will be harder. Andrea

10 years, 5 months

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Non-baking cure for sticky shed? (being serious for a moment)

by dave.g4ugm＠gmail.com

I know that tapes have different coatings, so some are ferrous and other chrome based, but what about the backing and "glue" that holds the two together? Dave G4UGM > -----Original Message----- > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Chuck > Guzis > Sent: 17 January 2016 23:41 > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> > Subject: Re: Non-baking cure for sticky shed? > > On 01/17/2016 02:00 PM, ben wrote: > > > > > Why not just grab a few 8 tracks from the truck out back. > > > > > ...Or fill those old QIC cartridges with some old acetate-base 1/4" > open-reel audio tape? After all, it's all the same... > > --Chuck

10 years, 5 months

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DEC Rainbow PC100-A

by shadoooo＠gmail.com

Hello, I recently took a DEC Rainbow PC100-A. It has been a huge house for a lot of spiders, who deposited eggs and dead insects all around. After full disassembling, cleaning and reassembling, I'm ready to try it! PSU seems to work well, power goes on with almost precise voltages, then all the test leds on the back will lit on... then nothing happens! No video, no sign of life. Clearly there's a problem at the very beginning of the boot phase, that could be caused by a lot of reasons. In the next days I will try to analyze possible causes of the problem with oscilloscope, in the meantime I'm searching a schematic, as board is very complex to follow trace-by-trace. On bitsavers I found a schematic of PC100B, but the main board is not the same as PC100A. Anybody has a schematic for PC100A? I suspect that ROMs could be damaged, anybody has a correct dump to verify the content of the EPROMS? Thanks Andrea

10 years, 5 months

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My TU58 again

by ard＠p850ug1.demon.co.uk

I think I have had a most instructive day. I did what I should have done a lot earlier and connected a (cheap, built from a Velleman kit) DSO to the output of the read amplifier in my TU58. That's pin 6 of the CA3130 at location E28 if you are trying to follow along in the printset, The printset indicates a wobbly waveform there marked 5Vpp. My little DSO can display the peak-peak measurement of a waveform. I started by cleaning the heads and demagnetising them (with one of those mains-powered electrmomagnet things). Of course I unplugged the drive from the controller before doing that in case the induced voltage was enough to damage things. Remember I have removed the 8155 from the controller board and fitted a socket, I have used jumper wires there to start and stop the tape, change direction, etc without the 8085 part getting in the way. I have what appears to be a new TU58 cartridge. With that in the drive I get a steady (and clean-looking) waveform of about 3.6Vpp. Low, compared to the value in the prints, but I suspect high enough to work. Then I tried my console tape. It goes all over the place. Sometimes 4V. Sometimes under 1V. And it is anything but a clean signal. There were times when it was just a little ripple. As I understand it there are no gaps in the formatting of a TU58. Certainly not ones that last for several seconds at normal tape speed. Worse than that, when I put the new cartrige back in the ampltude was significantly lower, around 2.7V. It came back when I cleaned the head again. My conclusion at this point is that my console tape is suffering from major dropouts and is shedding oxide. So now I need to get a good tape (maybe the new one I have), fix the standalone TU58 and dump the console tape image onto it. Or does anyone have any other ideas or comments? -tony

10 years, 5 months

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TU58 problems

by bob＠jfcl.com

What's the SD card based TU58 emulator that a couple of people mentioned? Is that just a Raspberry PI with linux and the existing TU58 emulator software, or is there something more purpose built? Bob

10 years, 5 months

3
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TU58 problems

by ard＠p850ug1.demon.co.uk

I am not sure this fits in with the current topics of this list on the grounds it involves real old hardware, but anyway.. I am currently trying to restore a VAX11/730. I got this about 20 years ago and dismantled it to get it home. For various reasons I never put it back together, I am doing that -- slowly -- now. It's the version in the half-height rack with an R80 at the bottom, then the 11/730 CPU box, and a TS05 on top. I know I am going to have problems with the storage devices, for the moment I am jsut trying to get the CPU running. I've remounted it in the rack, got all the ribbon cables in place, tested the PSU, etc. Minor PSU problems (leaky transistor) but now fine. Powering up gives the expected ROM> prompt on the terminal. Of course all you can do at that prompt is load the microcode from the TU58, so that is what I am trying to get working. And getting nowhere! Firstly the TU58 controller is not passing the self-test. I am pretty sure the 8155 RAM/IO chip is dead. I have removed this and fitted a DIP socket. The rollers were of course dead. I have made hubs and fitted an O-ring of a suitable size. This may not work correctly, but it does seem to move the tape. I have a couple of tape cartridges, the Console microocode tape, and amazingly the belt seems good in them. The motor does get the tape whizzing past the heads. I tried an 8155 borrowed from another device. The controller then passes the self-test (the LED comes on and stays on) but all I get is DD1: Read Error messages and the tape often runs off the spool (rethreading it is something I've got quite good at!). I tried a RS232 analyser between the TU58 and the VAX. Very odd. Either my RS232 anaylser drops 00 bytes or the TU58 sets short result packets. The meaningful bytes (response code, etc) are there, but things like the sequence number are not. Odd... With the 8155 removed, I can pull port pins (on the socket) high and low to start the motor, select drive, track, direction, etc. I've done that and put a LogicDart on the output of the comparator in the read amplifier. According to the manual, the tape is recorded at 800bpi and runs at 30ips. So I get that a bit should take around 41us. And a bit starts with a rising edge, the position of the falling edge (recorded at 1/4 or 3/4 of the bit time) determines whether it's a 0 or 1. Well, sometimes that's what I see on the LogicDart. Sometimes I see a 1:1 square wave with a period of 40-odd us. Does anyone have any sensible ideas as to what to try next. At the moment I have no idea if it's the tape, heads, roller or what.... -tony

10 years, 5 months

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P112 CP/M computer kits still available

by dave＠661.org

FYI, I still have lots of P112 CP/M computer kits for sale. Please buy one or several. See http://661.org/p112/ -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

10 years, 5 months

1
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seeking test program for klh10 and panda display

by dave＠661.org

In order to perfect my new USB-based Panda Display, I'd like to know what to expect on the display. Does anyone here have a pdp-10 program that will put a recognizable pattern on a parallel Panda Display? In particular, I'm looking for whatever is causing the action in this video to happen: https://www.youtube.com/watch?v=g_LcQ5apODg -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

10 years, 5 months

1
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PDP-12 restauration in center Germany (J?rg Hoppe)

by michael.99.thompson＠gmail.com

> > Date: Sun, 10 Jan 2016 17:16:17 +0100 > From: J?rg Hoppe <j_hoppe at t-online.de> > Subject: PDP-12 restauration in center Germany > > Hi, > > in case somebody needs companions for cross-tests or likes to exchange > thoughts: > > A few month ago we bought a PDP-12 and are restoring she since then. > > There is no online-diary about progress (the maching is eating up all > time), but see here: > > http://c-c-g.de/index.php?option=com_content&view=article&id=311:pdp12-geka… > > The 12 is complete with no visible damages and has some undocumented > add-ons (they always have). > Especially a MOS memory extension was plugged off very soon. > > Luckily we could organize an 95% complete 2nd module set. > > After console exchange (we had indeed a 2nd one!) and much trouble with > cpu logic, > we can now execute opcodes with DO and FILL/EXAM the core memory. > > Contact me if you like to visit us, we're sitting near G?ttingen > (between Kassel and Hannover). > > Joerg > Joerg, Take a look at a picture of our PDP-12. It has a PDP-8/I next to it as in your picture. http://www.ricomputermuseum.org/Home/equipment/dec-pdp-12/dec-pdp-12-restor… We also have MAI and Wang systems. -- Michael Thompson

10 years, 5 months

4
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TU58 problems

by blstuart＠bellsouth.net

On Sat, 1/16/16, tony duell <ard at p850ug1.demon.co.uk> wrote: > I tried a RS232 analyser between the TU58 and the VAX. Very odd. Either > my RS232 anaylser drops 00 bytes or the TU58 sets short result packets. The > meaningful bytes (response code, etc) are there, but things like the sequence > number are not. Odd... > > Does anyone have any sensible ideas as to what to try next. At the moment > I have no idea if it's the tape, heads, roller or what.... If it were me, I'd start by setting up some tests to determine what exactly the protocol analyzer is doing. If it really is dropping 0 bytes, then I'd probably hack up a home grown capture using a couple of serial ports. If the controller and the VAX really are speaking the right protocol to each other, then it's time to worry about the correctness of the data. On the other hand, if the controller really is not sending all the bytes it should, I'd check for bit rot in the EPROM. BLS

10 years, 5 months

2
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Oddball floppies for trade - 8", HS (outer edge), weird cutout

by COURYHOUSE＠aol.com

first time I have seen such a thing... Ed# In a message dated 1/16/2016 6:46:54 P.M. US Mountain Standard Time, michael.99.thompson at gmail.com writes: >From: Jay West jwest at classiccmp.org > >I have two "flippy organizers" (that's around 20 floppies each) full of >these oddball floppies. > >Picture at >https://www.flickr.com/photos/131070638 at N02/22020178558/in/dateposted/ > >They are 8", hard sectored, and the sectors are on the outer edge rather >than the hub, and there is an odd cutout on one edge that goes inside the >drive. > >I know I don't have a machine that uses these, so they are available for >trade. > >J Jay, The RICM just received a PDP-11/05 donation with an attached AED 2500 diskette subsystem. The drives are Memorex 651, and use the oddball diskettes you have. We could really use these diskettes. Is there any chance that you still have them? -- Michael Thompson

10 years, 5 months

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Oddball floppies for trade - 8", HS (outer edge), weird cutout

by michael.99.thompson＠gmail.com

>From: Jay West jwest at classiccmp.org > >I have two "flippy organizers" (that's around 20 floppies each) full of >these oddball floppies. > >Picture at >https://www.flickr.com/photos/131070638 at N02/22020178558/in/dateposted/ > >They are 8", hard sectored, and the sectors are on the outer edge rather >than the hub, and there is an odd cutout on one edge that goes inside the >drive. > >I know I don't have a machine that uses these, so they are available for >trade. > >J Jay, The RICM just received a PDP-11/05 donation with an attached AED 2500 diskette subsystem. The drives are Memorex 651, and use the oddball diskettes you have. We could really use these diskettes. Is there any chance that you still have them? -- Michael Thompson

10 years, 5 months

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ISO: Unibus SCSI disk controller

by derschjo＠gmail.com

(...but then who isn't). I'm looking for a mass-storage device for my PDP-11/44, and I'm having worse and worse luck with my current solution, an Emulex SMD controller -- drives just keep going south on me (the controller works fine, though...) I know how hard these things are to find, but if anyone has a Unibus SCSI controller they're willing to trade for something else, let me know. I have a variety of gear, PDP-11 and otherwise, drop me a line and maybe we can work something out? Thanks as always, Josh

10 years, 5 months

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Need cheap source for anti-static chip tubes

by snhirsch＠gmail.com

Title says it. Perhaps I'm being stupid about search terms, but I'm not finding much of anything on eBay. One seller has TSOP tubes, but I need plain, old 300mm DIP tubes. End plugs and pins for them as well. Plenty of companies offering them on the web, but all are oriented for production quantities. I'd be happy with 20-25. --

10 years, 5 months

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PDP-11/44 w/ 2 RLxx drives for free pickup in San Antonio, TX

by nf6x＠nf6x.net

I got this comment on my blog today: http://www.nf6x.net/2013/11/my-new-dec-pdp-1144-project/#comment-248370 "I have a 11/44. 2xrl drives. And misc extras. It is going in the dump in 2 weeks? do you know anyone who wants it FREE? schematics and rsx 11 mnuals and a few unix things? helotianmoon at gmail.com must pick up san antonio texas pick up by 12-24-2016" I would pick it up myself if I was local. Somebody grab it, please! -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

10 years, 5 months

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TU58 problems

by shadoooo＠gmail.com

Hello, well, if you see square waves, probably the read path analog circuit could auto-oscillate. This could be because of poorly filtered supply (bad electrolytic capacitors), or possibly some component in the feedback that's not soldered well. I should have a schematic around, I could give a look tomorrow... Andrea

10 years, 5 months

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For you SGI fans...

by geneb＠deltasoft.com

https://archive.org/details/cdromsoftware?&sort=-publicdate&and[]=SGI g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!

10 years, 5 months

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My last word on building computers!

by c.murray.mccullough＠gmail.com

I?m not sure to what degree one can/wish to build there own car. If one puts their mind to it; then anything is possible. I?m sure this applies only to die-hard builders and not representative of the ?average? guy/gal. One, and I may be stereotyping here, does not have the time to build much of anything is this hurried world we inhabit. I know this website caters to the experimenter/hobbyist in the computing world but I wonder how many of us have the time/inclination to build an old machine. I recently tried to revive my Coleco ADAM but couldn?t find old capacitors/transformers ? maybe in America they?re available! (I could run an emulator on my PC/Mac but to what end? It?s definitely not the same as running the real thing is it?) As for new machines I guess there are builders /programmers of Raspberry Pi?s but they have a limited use for power users and for ?old? computer aficionados of classic computing era! Do young people want to do this? They may be computer savvy but I don?t think too many have an interest in building anything, particularly from the vintage era. My friend?s grandson, he?s 7, told me the computer is a tool for getting ahead not for looking back. Yikes! Happy computing! Murray :)

10 years, 5 months

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Archiving CP/M 2.2 Source Code Programs to a PC (Fat or NTFS media)

by robo58＠optonline.net

Hi Folks, I have many diskettes worth of CP/M 2.2 assembler source code and programs that I'd like to archive in the PC environment. I'm worried that my media is degrading and I want to move it before it's too late. The media is mostly 8" SD or DD, there are also some 5.25" HD diskettes too. I have the original hardware and can view the media and run the programs. I'm looking for suggestions on how to move it to the PC environment. Thanks Robo

10 years, 5 months

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Archiving CP/M 2.2 Source Code Programs to a PC (Fat or NTFS

by f.heite＠hccnet.nl

>>> From: Robo58 <robo58 at optonline.net> >>> >>> I'm looking for suggestions on how to move it to the PC environment. IF your CP/M machine has a serial interface, I would connect it to a serial interface on your PC. Then use programs/protocols like kermit/xmodem/ymodem/zmodem/procomm/telix/hyperterminal to copy your CP/M files to your PC. Which one to use, depends on what software you have available on your CP/M system. On the PC side, you'll probably always be able to find a corresponding program. Have fun, Freek.

10 years, 5 months

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Building a PC - then & now

by c.murray.mccullough＠gmail.com

I was reading in a dated magazine article on the "freedom to build(a PC)": Well you can't build phone; can't build a car; can't build a refrigerator; can't build a TV. Do we have the freedom to build a computer? We did in the earliest days of the PC- the 8-bit era. Heck, that's all one could do! It was limited and is to this day. AMD vs INTEL control what we can do. Has anything really changed? Happy computing. Murray :)

10 years, 5 months

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USO (Unidentified System Unit)

by jnc＠mercury.lcs.mit.edu

> From: Henk Gooijen > I could not find the M5950 nor M3020 in any module list. The M3020 (and M1131) are variants of the M302 (and M113, respectively), so I don't think those are much of a clue. The M5950 I couldn't find anything about at all, but the M595 is a current mode converter for the DF11 - which I can't find much about, although it's in the '73-'74 Peripheral Handbook - but that looks distinctly like a possibility, from the pictures there. Noel

10 years, 5 months

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Archiving CP/M 2.2 Source Code Programs to a PC

by mark＠markesystems.com

From: Jon Elson <elson at pico-systems.com> > Got a console serial port on the CP/M system? You should be > able to use a program like Kermit to suck up the files. Something like this was going to be my suggestion, too. The original request was to archive the source files, not the disks themselves. Virtually every modem-type program (MODEM7, for example) has at least XModem, and of course there are tons of options for the PC end (PuTTY seems to be a popular choice). Hopefully there's some serial port in the system, even if it's not the console. And you do remember how to write 8080 code and make CP/M calls, right? Worst case, since it's "Source" you're trying to archive, would be to write a simple program that just reads a file and blurts it out the serial port, with no handshaking at all. Running a serial capture on the PC would probably have very few, if any, errors. ~~ Mark Moulding

10 years, 5 months

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Alphatronic P2 Manuals

by pieroandreini＠gmail.com

Hello, I scanned several manuals belong the Alphatronic P2 300dpi pdf no compression. How can I upload them for Bitsavers? Thanks, Piero

10 years, 5 months

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DATAIO 201 prom programmer

by chd＠chdickman.com

I have a DATAIO 201 prom programmer that fails the self test with an error 75. The error translates to a pin fault. Any help with schematics or suggested debugging experience appreciated. -chuck

10 years, 5 months

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Front Panels - Scan of finished item available

by rodsmallwood52＠btinternet.com

Hi Guys PDP-8/e types A + B complete. Scan of finished item available. See what you are getting. Packaging due in next day or so. Rod

10 years, 5 months

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Free HP 3000 Equipment for removal (Denver Craigslist)

by curiousmarc3＠gmail.com

Looks like someone beat me to it. Congrats to whomever it is, I hope it's one of us! Marc ----- Original Message ----- From: "CuriousMarc" <curiousmarc3 at gmail.com> To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Sent: Tue 05 Jan 2016 03:34 PM Subject: RE: Free HP 3000 Equipment for removal (Denver Craigslist) I'm on it... Marc -----Original Message----- From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Glen Slick Sent: Monday, January 04, 2016 8:38 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Free HP 3000 Equipment for removal (Denver Craigslist) Someone go get this. posted: 2016-01-04 12:20pm http://denver.craigslist.org/sys/5387506164.html I have the following HP 3000 computer equipment in my basement yours FREE for removal QTY Description ----- ---------------------------------------------------------------------- 2 HP 3000 series 30 Computers 4 HP 7925 disk drives 1 HP 2608A line printer 1 HP 7970E tape drive 2 HP 3000 Console Terminals 3 HP 2645A terminals 2 HP 2631A terminal printers The picture shown is of 3 disk drives and the Tape drive when new (1980). This equipment has been mostly idle for 20+ years. The first 4 line items of equipment above are relatively large and would require at least 2 men to remove each item from my basement.

10 years, 5 months

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Building a PC - then & now

by COURYHOUSE＠aol.com

I think the Pilot brand TV at the museum may be continuous and yes has chan 1 Ed! In a message dated 1/13/2016 5:54:46 P.M. US Mountain Standard Time, cclist at sydex.com writes: On 01/13/2016 03:27 PM, William Donzelli wrote: > In the old days, the shitty kit TVs would have continuous tuners. In prewar days, it seems that there more than a couple of offerings. Didn't Meissner(they of the "Signal Shifter" VFO) offer a kit TV in the 30s/early 40s? I do remember the continuous tuners, though--two bands--and one could even tune Channel 1. A large number of Heathkit color TVs were built by vets using funding >from the GI bill. Those were Heath's good days... --Chuck

10 years, 5 months

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Amazing game???

by tulsamike3434＠gmail.com

I have went over and over the code here.... http://www.atariarchives.org/basicgames/showpage.php?page=3 but this is what I get??? http://i64.tinypic.com/nci35y.jpg I know all the code is right is there a misprint in the book? I am pulling my hair out...LOL

10 years, 5 months

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Free (pay shipping) Hp DDS-4 40gb tapes (only have two)

by jrr＠flippers.com

I have two sealed C5718A tapes that are free to the first person to ask for them and pay shipping. I hate to throw out something that may still be useful. Can mail them for $5 (I think) to the USA, or local pickup. John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"

10 years, 5 months

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Sun SPARC at iBid State of Illinois auction site again

by jzatar2＠illinois.edu

Hey everyone, I was browsing and I noticed that there's another Sun SPARC posted up: https://ibid.illinois.gov/item.php?id=170591 last time, I think there was one that went for a mere $5. Now of course, you gotta move it or pay to have it moved, but if you're interested, act now and start getting an account on the site. When I got my account, I had to wait a few days before they actually got my account set up. Anyway, given that this is the second time I've seen Sun equipment on the site at the same location, I would venture to guess someone over here in IL government is phasing out their sun stuff, so maybe it's worth checking in the future as well for more stuff if anyone's interested. Regards, Joe

10 years, 5 months

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I COULD JUST KICK MYSELF IN THE BUTT!!! commodore pet . . .

by tulsamike3434＠gmail.com

Back in the mid to late 90's I used to go to the Salvation Army store every day before work because I worked night shift and the lady at the counter used to have a crush on me and would set aside all old computer stuff for me. Well one day I went in and I seen her wheeling me out a Commodore PET with the calculator keyboard witch drove me insane trying to program on that lil keyboard lolol. I got it for 10.00 FREAKING BUCKS yes TEN F.R.E.A.K.I.N.G. BUCKKKKKSKSKSKSSKSKS}{PJDGHLGFO GRRRRRRR Sorry about that I almost just broke my keyboard just telling this story lol anyway I played with it and this was just before AOL went from 20.00 for 15 hrs of INTERNET time to 19.99 unlimited net time. I don't know if any of you remember when they switched over to the unlimited monthly plan but as for in Oregon AOL Servers crashed for about 3 months from such a heavy load of members dialing up and connecting quick question here _*<------- Did this happen in your area if so where were you?*_ Anyway back to the commodore PET I snatched that baby up and most of my information I got for older computers back then was the library I used to spend HOURS AND HOURS reading and learning how to program in BASIC I had no idea what all the ports in the back were for I was just happy to have the built-in tape drive. I was programming a " ROCK n ROLL TRIVIA GAME" boy I got in such big trouble because Cd's where the new thing then so I had no blank tapes so I remember I got busted from my mom, She was so mad at me because I use a TAMMY FAY BAKKER from the Jim Bakker PTL show tape in my Commodore PET Computer lol Well just about this time all the "TREE HUGGER'S" Were using the SPOTTED OWL to bring the logging industry to it's knees! so about that time a friend of mine from central America and offered me a job in the Oil industry and I up and left everything behind but I must admit a year before that my Mother bought me my first PC it was a Amega 486 DX66 with 8meg of ram and I was getting very interested in HTML web programming I think my first FREE HOSTING website was on GEOCITYS. ANYway I hate myself for leaving my MINT condition Commodore PET when I moved but I had alot of other life choices to be dealing with at the time...

10 years, 5 months

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TDL 8K Z80 Basic..

by holm＠freibergnet.de

Currently I'm fiddeling around with the old 8 Kbyte Z80 Basic Interpreter >from TDL, found an Paper Tape Image here: http://www.classiccmp.org/dunfield/img54306/p/tdlsoft.zip on Dave Dunfields pages. I've used the 12K Version from TDL many years before on my home computer and now we have a project on robotrontechnik.de with an SBC and I've ported the P112 Tiny Basic already to this SBC, now I want to try the 8K TDL Version. ... Has someone still a computer with that 8K TDL Basic in use? In the moment I'm writing a loader that can "autopatch" the relocation Bytes in the TDL HEX file format from the Paper Tapes. Someone used that before? Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

10 years, 5 months

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DEC PDP-11 software manuals available

by jnc＠mercury.lcs.mit.edu

> I have a bunch of DEC PDP-11 software manuals which I don't want .. > They are free to a good home They have been claimed. Noel

10 years, 5 months

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DEC PDP-11 software manuals available

by jnc＠mercury.lcs.mit.edu

So I have a bunch of DEC PDP-11 software manuals which I don't want (which I got in a lot with some other manuals I did want). They are free to a good home (US media mail free, anything else we'll have to work out). They are: RT-11 Documentation Directory (AA-5285D-TC, March '79) RT-11 System Release Notes (AA-5286B-TC, March '78) RT-11 System Generation Manual (AA-5283B-TC, March '78) Introduction to RT-11 (DEC-11-ORITA-A-D, August '77) RMS-11 Installation Guide (AA-H235A-TC, June '79) RMS-11 User's Guide (AA-D538A-TC, March '79) RMS-11 MACRO-11 Reference Manual (AA-H683A-TC, March '79) Also, before I send them off, should I scan any/all of them (I'm too lazy to look to see if they already available online :-)? Noel

10 years, 5 months

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Front Panels - Update

by rodsmallwood52＠btinternet.com

Hi Guys I just had an email with some pictures of the panels in. The panels are great but the pictures not. Because you need lots of light to see what you are doing. They have several skylights and the light is all wrong for phone cameras They are adding the final details : A and B customisation and the second white line round the lock area. The front is now matt black. I'm changing to professional packaging as green tape and cardboard works but is not that pretty. So we expect to start shipping when the new packaging arrives. PDP-8/f and /m are waiting to be screen printed next. PDP-11/XX are being drawn now and I'm going to try and have at least a few boards ready with the common features before taking orders. Rod

10 years, 5 months

1
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Colour composite video for the BBC micro

by terry＠webweavers.co.nz

Sometimes capability is already built in but not widely known or publicized. Sometimes all it needs is a jumper! http://www.classic-computers.org.nz/blog/2016-01-12-composite-video-for-bbc… Terry (Tez)

10 years, 5 months

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