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

by legalize＠xmission.com

Hi, Does anyone know the part designation for the keyboard on an HP2648A? I've looked through the manual (unfortunately not OCRed so a visual inspection of all pages is required) but didn't see a part number for the keyboard itself. Anyone have one of these? -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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RK611 schematics

by henk.gooijen＠oce.com

Allright, I had a look at the schematics during the lunchbreak to prepare for some measurements this evening. Let me know if my conclusions from a look at the schematics are ok, so far. On page 'M7900 UNIBUS INTERFACE (UB7)' the databus bit 15 is connected to the tranceiver 8641 (E10) pin 15. If pin 9 (UB7 ENA DATA DRVRS L) is '0', input pin 14 appears inverted at the pin 15. As the diagnostic says that it expects 000200 on reading CS1, and the result is 100200, you can say 2 things: 1) 'problem' with data bit 15 (where ever) 2) as the signal "UB 7 ENA DATA DRVRS L" is common to E3, E10, E11, E2, and E1 that signal must (?) be OK, because that signal enables all other databus bits, which seem OK. So, either E10 (in #14, out #15) is defective, or the problem is already with the signal driving pin 14 ("TS REG BUS 15 H"). Since I don't have a 4-channel 'scope, and I need to follow 3 signals (in/out/enable), I guess I will get out the D100 again. - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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RK611 schematics

by henk.gooijen＠oce.com

> > Great! Thanks Al, and the person that provided them! > > I will download them tomorrow and print them. > > Now I'd better look for my prints so I can follow along.... Thanks! I have the 3 dual width extenders already next to the machine! > > I have a day off, to pick up an 11/34 with a LAB-11 > > and ... an RK07! > > You'd better not try board-swapping between those 2 > RK611s.... More seriously, nice find. The idea crossed my mind :-) , but is was not board swapping ... I thought of swapping the whole RK611 backplane and modules, because the hauled machine was in working condition decommisioned. The RK611 that I have installed is completely unknown. I had the RK611 backplane already a few years, and I got the 5 modules just last year, not known-good, but neither "known-bad". There is not much learning experience in any swap approach, be it a module or a complete system unit, so I downloaded the RK611 print set ... - thanks again, Al. A more complete description: it is an 11/34 with RX01, RK05/f, RK05/j, Laboratory Peripheral System, Kennedy 9100 (vertical) tape drive, expansion BA11 box and one RK07. We did lock the RK05 heads before moving of course. (We = Edward and I). There is also a "BA11 expansion box sided" box from Plessey, but I have not yet looked at the details of the machine, so that Plessey box is a black box to me at this point. - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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HP 82161A

by Stefan.Wolfs＠hmz.be

Dear Sir , I am searching for data cassettes and found your website. Could you make me an offer for 6 philips certified digital mini-cassette type LDB 4401 Regards, Stefan Wolfs Purchasing Manager tel.: 0032 11 697 204 fax.: 0032 11 681 307 mail: stefan.wolfs at hmz.be www.hmz.be

20 years, 7 months

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LA-30(?) spare boards

by legalize＠xmission.com

Has a buy-it-now of $50, which seems reasonable if you have a busted LA30 or something similar that uses these modules. <http://cgi.ebay.com/DEC-PDP-Q-BUS-PDP-11-11-23-LSI-Digital-M7731-M7389_W0QQ…> -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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Preventing CGA revisionist history

by cpg＠aladdin.de

Hi, regarding the CGA, the technical manual mentions a 160x200 mode with more that 4 colors. It doesn't give any more information on how to enable this mode, though. Does anyone on this list know how to enable this mode, or better, has a demo program which does that? regards, chris

20 years, 7 months

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Kaypro manuals available

by kenblinnn＠msn.com

hi, IM ken blinn IMO looking for a kaypro 2 operation manual and cp/m sbasic manual . I have 1 WordStar floppy . can you help me thank you ken blinn p s can you help me find some floppy to use on it

20 years, 7 months

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Ebay Northstar Horizon

by robert.stek＠gmail.com

FWIW, AFAIK & IIRC (I just love abbrev.) the metal-cased Horizon did not appear until several years after NorthStar made its appearance with its original model. The wooden case was veneered plywood stained walnut in color. I don't believe that it was walnut veneer. The end pieces of the Sol were solid walnut. The story goes that a friend of one of partners in ProcTech had a wood working business with lots of scrap walnut available, so the Sol had its 2 side panels supplied in that wood. The kit version had instructions for finishing the wood with tung oil. I still have several Sols (my first computer) and several Horizons (all with wooden cases). I think Allison has (had?) at least one Horizon with the metal case. Once I get a round TUIT, I plan on making a walnut case for my reproduction Mark-8 (the round TUIT being the most critical component and one I have not yet found). Bob Stek Saver of Lost Sols (should be a bit more active now that I have officially retired)

20 years, 7 months

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Homebuilt relay computer

by dwight.elvey＠amd.com

>From: "Roy J. Tellason" <rtellason at blazenet.net> > >On Friday 20 January 2006 02:57 pm, J.C. Wren wrote: >> <URL: http://www.cs.pdx.edu/~harry/Relay/index.html > > >What's missing there is sound files, for when the thing is operating... :-) > > Hi I don't think he mentions the memory size. Dwight

20 years, 7 months

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RK611 schematics

by henk.gooijen＠oce.com

Great! Thanks Al, and the person that provided them! I will download them tomorrow and print them. I have a day off, to pick up an 11/34 with a LAB-11 and ... an RK07! BTW, I have uploaded the RK07 printset in 4 parts, total 100 Mb. - Henk. ________________________________ Van: cctalk-bounces at classiccmp.org namens Al Kossow Verzonden: wo 25-01-2006 04:41 Aan: classiccmp at classiccmp.org Onderwerp: RK611 schematics now up at http://www.bitsavers.org/pdf/dec/unibus/MP00105_RK611_schem_Aug77.pdf This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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Anyone looking for laptop memory?

by cclist＠sydex.com

While looking for my cache of PMC MO disks, I stumbled on a box with some NOS memory modules. I think I got these when I bid on a mixed lot of old memory modules that had one that I really wanted. I found 2 2MB and one 8 MB module for what I believe should be a Compaq LITE4. These are about the same size as a PCMCIA card, but with offset contact rows (in contrast to a PCMCIA card). I've also got a 4MB and an 8MB short (about 2" long) 72-contact SIMM. One is labeled "21xx Memory" if that's any help. I've also got another small 8MB memory module about 2"x1" with two 30-pin female headers on each end of one side. Anyone have a need for these or even know what they are? Cheers, Chuck

20 years, 7 months

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Homebuilt relay computer

by dwight.elvey＠amd.com

>From: "Chuck Guzis" <cclist at sydex.com> > >On 1/24/2006 at 10:18 PM ard at p850ug1.demon.co.uk wrote: > >>How about using uniselectors and having decimal (or octal) memory ? > >I suppose you might also include some Strowger switches for address >decoding... > >Back when I was in high school (a very long time ago), a fellow built a >tic-tac-toe "computer" using stepping relays and other telephone gear, >including a rotary dial where one input one's move. (only 9 possibilities, >so that was convenient). The contraption would make its own move in >response. Readout was a 3x3 grid of 25W incandescent lamps. > >It was fun to watch. > >Cheers, >Chuck Hi A fellow I know named Ed McLaughlin built one that took him to the national science fair. I don't know if it is the same one but this was in the early 60's some time. Dwight

20 years, 7 months

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Jim's 8088Corruption mentioned on SlashDot

by mbbrutman-cctalk＠brutman.com

Congratulations Jim! I knew what they were talking about just based on the 1 line description. http://hardware.slashdot.org/article.pl?sid=06/01/25/1649251 Mike

20 years, 7 months

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Texas 990/10A 2MB Boards

by richard＠pentagon-electronics.co.uk

Marty I saw your posting regarding 990/10A boards, do you know of anyone who can repair or supply these boards. We have a number of faulty ones. Regards Richard Norman

20 years, 7 months

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Manual available - Heathkit ET3400 trainer

by rdewan＠crh.org

hi -by name is rdewan --do you still have the manual for heathkit 3400 trainer i am looking for one -please let me know at rdewan at crh.org-thanks CONFIDENTIALITY NOTICE: This e-mail message, including all attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. You may NOT use, disclose, copy or disseminate this information. If you are not the intended recipient, please contact the sender by reply e-mail immediately. Please destroy all copies of the original message and all attachments. Your cooperation is greatly appreciated. Columbus Regional Hospital 2400 East 17th Street Columbus, Indiana 47201

20 years, 7 months

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Homebuilt TTL and transistor CPUs - wierd logic

by mtapley＠swri.edu

All, way behind on my digests, sorry for the time-warped reply. At 12:00 -0600 1/5/06, Chuck wrote: > >Why not Shockley diodes? Anyone remember the Shockley demo of a diode-only >>audio amplifier back in the 60's? ...and my nomination for hobbyist research is: Balanced trinary! (Possibly using superconductors and SQUID detectors.) Balanced trinary means place values go up by three each, but instead of each place containing symbols worth 0, 1, or 2 times the correct power of 3, the symbols are worth (-1), 0, or 1 times that power. Using the letter n for the (-1) symbol, a short counting table is: BT Decimal ... nn -4 n0 -3 n1 -2 0n -1 00 0 01 1 1n 2 10 3 11 4 1nn 5 1n0 6 1n1 7 10n 8 100 9 101 10 ... No need for a negative sign bit, it's built in. Each memory cell needs to hold 3 states, which for superconducting loops should be clockwise, no, or counterclockwise current. Of course, you could simulate this using 2 binary gates to carry each trinary digit - thus wasting 25% of the practical power of your computer (compared to implementing it as base-4). But if Moore's law holds up, that'll only set you back about 3 months compared to conventional binary computers.... Hope at least some of you are laughing by now. Practical applications *do* exist. You can get a long way with just a few weights (one each power of 3) and a balance scale using this system, for example. "n" weights go on the platform with whatever's being weighed, "1" weights go on the other side. -- - Mark 210-522-6025, temporary cell 240-375-2995

20 years, 7 months

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HP 700 stuff FTGH (Germany)

by Arno_1983＠gmx.de

Hello, Erlangen University in Northern Bavaria, Germany, is about to dispose of some old computing equipment from the departments of Electrical Engineering and Materials Science: -several (10 +-) HP 700/RX colour X-Terminals, complete with HP Sync-on-Green monitors, cables, HP-HIL Keyboards and Mice. Comes with tower stand. -some (5 +-) HP 712/100 Workstations, complete with HP (VGA?) Monitors, cables, HP PS/2 Keyboards and Mice. Comes with tower stand. -a couple HP apollo 9000/? (600? 700?) Workstations (narrow tower or wide pizza box), complete with HP Sync-on-Green monitors, cables, keyboards and mice. These are all upgrade throws and therefore were working until shut down (except for one 712/100). Software to boot the X-Terminals is available on http://www.cb3rob.net/~sven/xterm/, for example. I'll be saving some of the stuff for the museum and some more for myself, but of course I can't take the whole load. However as I don't want it crushed, I offer to put aside and store what you promise to pick up. Shipping may be possible, but we're trying to avoid it at the moment. ATTENTION: even if the X-terminals and HP 712/100 have VGA style monitor connectors, DON'T try any ordinary VGA screen on them!!! My personal 700/RX (b/w variety) has blown one of my fairly modern VGA monitors (although it worked with a different one), so be sure to check the supported frequency ranges! Best take a monitor that comes with it. Hope to hear from you, -- Arno Kletzander Stud. Hilfskraft Informatik Sammlung Erlangen www.iser.uni-erlangen.de 10 GB Mailbox, 100 FreeSMS/Monat http://www.gmx.net/de/go/topmail +++ GMX - die erste Adresse f?r Mail, Message, More +++

20 years, 7 months

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Homebuilt TTL and transistor CPUs - wierd logic

by Arno_1983＠gmx.de

Sridhar Ayengar <ploopster at gmail.com> wrote: > Mark Tapley wrote: > <SNIP> > > Of course, you could simulate this using 2 binary gates to carry > > each trinary digit - thus wasting 25% of the practical power of your > <SNIP> > > I think you need to call it something other than "trinary digit" because > that contracts to "tit". > > Peace... Sridhar Hmm, not quite. According to the documentation of Malbolge (an esoteric programming language specifically designed to be difficult to program in and using trinary "arithmetic"), that's "trit". The specification is here: http://www.antwon.com/other/malbolge/malbolge.txt So long, -- Arno Kletzander Stud. Hilfskraft Informatik Sammlung Erlangen www.iser.uni-erlangen.de Telefonieren Sie schon oder sparen Sie noch? NEU: GMX Phone_Flat http://www.gmx.net/de/go/telefonie

20 years, 7 months

1
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Looking for Morrow MD5/MD11/MD34 docs and printsets

by staylor＠mrynet.com

I'm searching out documentation for the Morrow Micro Decision MD5, MD11 and/or MD34 Z80 CP/M machines. I had a line onto someone that had them, but he moved and his email address no longer works. Does anyone out there have any such documentation, preferably already scanned? TIA, -scott

20 years, 7 months

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RK611 schematics

by aek＠bitsavers.org

now up at http://www.bitsavers.org/pdf/dec/unibus/MP00105_RK611_schem_Aug77.pdf

20 years, 7 months

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As promised -- updated museums list

by news＠computercollector.com

Please check out the new "Places / Events" link in the Resources section of the newsletter's web site at http://news.computercollector.com ... There are currently 32 places listed. If I missed any significant ones, please email me privately / off-list. Thanks. - Evan ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Computer Collector Newsletter: >> http://news.computercollector.com Mid-Atlantic Retro Computing Hobbyists & Museum: >> http://www.marchclub.org >> http://groups.yahoo.com/group/midatlanticretro/

20 years, 7 months

2
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Microsoft doesn't like ClassicCmp?

by mokuba＠gmail.com

Microsoft Entourage (outlook like program in office 2004 for mac) follows every email rule... EXCEPT the classiccmp rule set

20 years, 7 months

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what was the first color portable?

by chrism3667＠yahoo.com

I FINALLY got my TI portable professional in the mail today. Nearly 50 lbs oi. Did anything sporting a color crt predate this unit? Whos going to help me retrofit a more modern and snappy tube? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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7 track tape drives

by Wes.Goodwin＠goodwinengineering.com

Dear Sir, Do you still have any of the old tape drives referenced in your message? If so I am interested. Thanks. Wes Goodwin Well, I went through the hardware I have at home and here is the list. Most of the stuff hasn't been turned on for over 10 years, probably more like 15. It has been in my workshop/basement, so it is pretty dry. The list of manuals will come later. The list of tape drives at work will come after that, but those (I think) are all 9 track, as are most of these. Anyway, here is the list of drives/controllers/formatters. Kennedy 9220 (192-9220-066) two cables, and a Kennedy 5427 mounted on the back. Formatter maybe. Cipher F880 1600/3200 BPI, 100/50/25 IPS IDT (Innovative Data Technology) TD11051, 800/1600 BPI, 45 IPS, 3 connectors, read, write, motion, 36 pin edge connectors, and a cable from (THIS) drive? bringing all 3 connectors into a single 50 pin edge higher densidy connector. Kennedy 9000 (192-9000-019) 9 track 800/1600 BPI, 37.5 IPS Cipher 910640 800/1600 BPI, 75 IPS 2 Emulex TC01/TU01 board pairs, QBUS 1 Emulex TC02 Formatters?: Pertec F6181-1/0085 Formatter, 2 boards, NRZI Read/Write, PE Read Datum 10341 Q/HP (Kennedy 120-0025-01) controller Datum Formatter 5091-120 Pertec f84942(0)/13.9, 901006-01 with R/W 7/9 NRZI Prime formatter 3101-0001 (Kennedy 9219-509), 3 boards inside As I said, I have been holding on to this stuff so I could someday set up a system to read the 15 or 20 tapes I have. All RT-11 or VMS, with a couple off an RSX-11 system. If there is something here that could help out with somebodys project, I would be glad to lend it out, or even give it away, just as long as it either makes it back so I can eventually read my tapes, or if somebody wants to read the tapes they can have all/any of the tape drive hardware. The list of manuals for the formatters/drives will be along shortly. Regards, Joe Heck

20 years, 7 months

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Quick Forth Question

by dwight.elvey＠amd.com

>From: ard at p850ug1.demon.co.uk > >> That's odd. >> >> Usually ." Hello, world." words on all forths. > > >Watch out. In some Forths, ." can only be used inside a colon definition, >not in the imput like (you get some very odd effects, possibly even a >crash if you try). I used to know the reason for this, something about it >needing to allocate space for the string. > >At least one Forth used " rather than ." too. > >> >> Keep in mind you do need the space between ." and the first letter of >> the string, since ." is a word (a "parsing" word since it reads ahead in >> the stream till the ending ") > >But there does not need to be a space before the closing quote (if there >is one, it will be output as part of the string) Hi As an example, : HI ." HELLO WORLD" ; should echo when you enter the word HI. > >> Might help. Sometimes you can also type WORDS at the command prompt and >> see all the words. Tony mentions VLIST but I've also seen WORDS or LIST used for this function as well. As for filenames, this is something that each implementation does differently. If you can get a VLIST, we can most likely figure out what is going on. Some simple test. 100 CONSTANT FRED ( should create the constant FRED ) FRED . ( should print 100 ) 200 VARIABLE SAM ( should create the variable SAM but depending on implementation it may or may not initialize the value to 100 ) SAM @ . ( should display the value 200 ) 300 SAM ! ( should store 300 to SAM ) SAM ? ( if implemented should display the value in SAM ) SAM . ( displays the address of SAM ) Anyway, try to get a complete list of words with something like VLIST. It'll pick up things like single character words like ! or . that would otherwise be hard to find. As was mentioned, even though it may only store 4 characters of a word, most times it also stores the length so even though VARI doesn't work VARIABLE should work ( even VARIXXXX would do the same ). I like Forth but I think the truncated names are a pain. It would be better to have the first 3 letters and a hash of the word as a last byte. I guess for a memory constrained system, one has trade-offs. Dwight

20 years, 7 months

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RK07 questions - now RK611 questions

by henk.gooijen＠oce.com

________________________________ Van: cctalk-bounces at classiccmp.org namens Tony Duell Verzonden: di 24-01-2006 01:10 Aan: cctalk at classiccmp.org Onderwerp: Re: RK07 questions - now RK611 questions > > You are correct, Tony, board swapping tricked me (this time)! And yet you persist in wanting to do it... > I think I can forget the RK07 drive for now, and concentrate on the RK611 > controller. First, I checked the flat cable from the controller M7904 (dri= > ve > interface) module to the home-made bulkhead. That flat cable is 100% OK. > The round cable from the bulkhead to the drive is NOS, and the label is > 70-12292-25, so I'm sure it is the RK06/RK07 drive cable, not the RL0x cabl= > e. Can you open the hood at one end of that cable (it will unclip fairly easilt, I think you undo the screws on the cable clamp first). An RK07 cable as virtually all the pins wired, an RL cable has a lot unwired. I have learnt not to assume anything when tracing faults.... And do stick a voltmeter on the +5V line. Bitter experience (again) has taught me that this is a the cause of a lot of obscure problems. Best to eliminated it now... > = > > Before pulling out all kind of equipment, I started with what a DEC enginee= > r > probably also would do: run the diagnostics! So, I loaded XXDP and ran > ZR6A??.??? which is the test "RK611 diskless controller diagnostic #1". OK... > Here is the output. > = > > .R ZR6A??.??? > ZR6AD0.BIN > RK611 DISKLESS DIAGNOSTIC: PART 1 CZR6AD0 > @ > ATTEMPTING TO CLEAR CS1 WITH A SUB CLEAR > BUS ADD INCORRECT > TEST ERROR > NUM PC > 000041 033024 > PREV EXPECT ACTUAL > VALUE VALVE VALVE > 013776 000200 100200 > = > > So, there is already a problem with the RK611 controller reported after the= > > diagnostic runs some 5 seconds! A few months ago I scanned a pile of XXDP > doc, but the ZR6A et al. was not amongst them :-( > I am not sure I have a spare RK611 controller board set (going to the attic= > k > after this e-mail), but can somebody tell me which board is likely to be su= > spected? Do you want my help or not? Because I sure am not going to help you to swap boards. What I can tell you is how to trace that fault. The diagnostic seems to be saying that the top bit (bit 15) of CSR1 could not be cleared. So, let's grab the prints (but not tonight, it's late...) and find CSR 1, find out what should set and clear bit 15, and see what's going on there. -tony This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

1
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streaky printing?

by mouse＠Rodents.Montreal.QC.CA

I have an HP LaserJet IIISi. It's mostly Just Worked for me (though there was one mildly spectacular incident involving a failed electrolytic a while back). But recently (the last month or so), it's been exhibiting odd streakiness. Given the amount of collected wisdom here regarding such things, I thought it would be a reasonable place to ask to see if anyone can tip me off what's up with it and how I might be able to fix it. Specifically.... After leaving the printer off for a long period (a weekend, say), upon turning it on and printing, the first page is fine. The second page exhibits a few grey vertical streaks, worse towards the bottom of the page - not clean vertical lines; it looks as though toner is getting into the paper path where it shouldn't, and rubbing off on the page before it hits the fuser. Printing more pages works fine, but they get worse and worse. I've never had the streaks get so dark that I can't read printing for them, but the printing definitely becomes black-on-grey instead of black-on-white. Letting the printer sit will improve matters somewhat, but only somewhat; recently, I've even had the first page come out with some streakiness. I'm wondering if there's something like a static bleeder that's failed open, or a mechanical part that's not moving where it should, or some such. I can do a greyscale scan of a page if it would matter, if the details of exactly what kind of streaks I'm seeing can affect the answer. /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

20 years, 7 months

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Brittle chip pins

by tshoppa＠wmata.com

At 08:43 AM 1/24/06 -0500, you wrote: >Okay, I figured out the immediate problem. Three of the pins on one >of the EPROMs have broken off. One was hanging by a thread and fell >off when I inspected it. I see no evidence that the pins remain in >the sockets so I guess they must have fallen off when I removed the >EPROMs to read them in my EPROM programmer. I suppose this suggests >that they may have fallen off *before* I read them and that is why >your SnapFORTH ROMs don't work. I don't think that's the case though >because I'm sure I would have noticed that. Do EPROM (or chip pins in >general) get more brittle as they get older? They were plenty brittle to begin with! See for example the graph labeled "Number of pins remaining vs number of socket insertions" in the WOM data sheet: http://academics.vmi.edu/ee_js/Research/IC_Datasheets/digital_cmos/Write%20… Tim.

20 years, 7 months

1
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A little OT: Google

by cclist＠sydex.com

I've been reading the story about the business of Justice subpoenaing the search records from Google for a week last summer. Google doesn't want to turn them over, but should they lose their appeal, why not turn the data over in the form of punched cards? This qualifies as "electronically readable media", doesn't it? It'd probably be several truckloads and leave those guys at DOJ wondering what to do next... Cheers, Chuck

20 years, 7 months

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Quick Forth Question

by zmerch＠30below.com

Dudez & Dudettez: I'm trying to get some SnapForth ROMs running for the Panasonic HHC 'puter - and I'm having a bit'o'difficulty, mainly as I know... ummm... "squat" about Forth. ;^> I've gotten the ROMs to be able to start SnapForth, ask for a filename, create the filename & filespace (about 1K of RAM goes "buh-bye" for every filename I make... ;-) but no matter what I type, all I get is "Can't Find xxxxx" where xxxxx seems to be any durned thing I type. It can't seem to make new words, and every simple "Hello World" type proggie I've found on the net makes *no* sense to the 'puter. It looks like it has a max. of 4-character words... duh, waitaminit... lemme check the ROMs again... *maybe* 5-character words, as it looks like the last character of the word is OR'ed with $80... It looks like it's got quite a few words, looking at the ROMs in ASCII - I found VARIA, CONST, STRIN, CVECT, JUMP.... I could provide a clip of the ROM word table if it would help... I've tried: 100 LLL ! [[ To try to store the variable 100 in LLL ]] 100 VAR DORK 100 VARI DORK 100 VARIA DORK 100 VARIABLE DORK [[ To try to store the variable 100 in DORK ]] 100 CONS BURP 100 CONST BURP [[ To try to make BURP a constant of 100 ]] I've also tried: .S DROP ." Hello World" and other things I'd seen in various webpages thanks to Google. Anyone got any other idears for me? Thanks, Roger "Merch" Merchberger -- Roger "Merch" Merchberger | A new truth in advertising slogan SysAdmin, Iceberg Computers | for MicroSoft: "We're not the oxy... zmerch at 30below.com | ...in oxymoron!"

20 years, 7 months

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AOHell non-sent and lost mail.... oppps!

by Useddec＠aol.com

My AOL (which I will be dumping later this year) has lost a lot of my incoming mail, and not sent all of my outgoing mail. I apologize for this inconvenience, and if you have not heard from me regarding older DEC parts, please try to contact me. Thanks, Paul 217-586-5361 10am-8pm

20 years, 7 months

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Rescued: HP85, HP86B, 912x drives - score!

by rca72461＠bigpond.net.au

Did you ever have any luck with those old HP-85's you found ? Richard Caruana Australia Just Curious

20 years, 7 months

2
1
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SGI Tech Info mirror...

by lbickley＠bickleywest.com

For some time, what I consider the best SGI Tech Resource site on the web had no mirror. Over the years I have referenced the site for SGI tech info, benchmark info, drivers, etc. It contains literally hundreds of MB of data. So Ian Mapleson (the site's owner) and I have worked together to create a U.S. mirror at: http://vintagecomputers.info/ Sponsored and paid for entirely by my little company ;-) Enjoy!!! Cheers, Lyle -- Lyle Bickley Bickley Consulting West Inc. Mountain View, CA http://bickleywest.com "Black holes are where God is dividing by zero"

20 years, 7 months

1
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QX10 graphics board

by henk.gooijen＠oce.com

> Tony Duell wrote: > > And the board basically worked. The display at boot-up was sane. > Suspecting a RAM problem, I put in a complete new set of > 4164s -- no change. Hmmm, sounds like swapping to me ... ;-) - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

1
0
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6RS20SP4B4 datasheet online (LT33 teletype)

by v.slyngstad＠verizon.net

Hi, this probably is beating a dead horse, but I finally acquired a datasheet for the 6RS20SP4B4, used in the LT33 teletype modifications. I have scanned it and made it available at http://so-much-stuff.com/pdp8/pdf/6rs20sp.pdf (The data sheet actually describes the 6RS20SP and 6RS5SP families.) Contrary to DEC documentation, it is a thyrector (not a thyractor, which would have an inductor in it). Vince

20 years, 7 months

1
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Anybody need some NSC 800-3I's?

by cclist＠sydex.com

Awhile back I posted a WTB for some NSC 800 CPU chips and didn't turn up anyone having any for sale. Calls to the usual surplus places came up empty. I did finally manage to snag a bunch of these--more than I need. These are the 3 MHz ceramic 40 pin DIP packages with a date code in late 1986. Supposedly NOS (they certainly don't appear to be pulls). In case you're not familiar with these, they're basically CMOS Z80 CPUs with 8085 timings. They have the same half-interrupt pins that the 8085 does, but NMI traps to 0066H and there's no RIM or SIM. Interface signals are prety much 8085-compatible with the 8085-style multipexed data/address lines. These are NOT pin-compatible with either the 8085 or the Z80, but my need for them is to replace an 8085 with the assistance of a little glue (mostly flipping a few signals). You can find the data sheet on the web at http://www.alldatasheet.com/datasheet-pdf/pdf/NSC/NSC800.html. At any rate, I've got about 15 of these to spare and will part with them for $2 each+postage I'll give preference to those buying more than one. Cheers, Chuck

20 years, 7 months

1
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HP 9ks at Boeing (OT)

by compoobah＠valleyimplants.com

Yep, Boeing Kent Washington.

20 years, 7 months

1
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Sorting out the BIT order of the RAM in the PX4

by ard＠p850ug1.demon.co.uk

This story might amuse some of you... I have an Epson PX4 laptop in bits on the bench, and for various reasons I needed to work out which RAM stored each data bit (there are 8 64K*1 DRAMs on the board, these are actually somewhat odd DRAMs with internal refresh, but anyway...) The problem is that while the main processor is a Z80 (and thus the data bit order is known at the processor pins), the bus goes into a gate array (GAPNDL), comes out on another 8 pins and goes to the RAM. To make life difficult, my PX4 doesn't have any programming language (I don't have the BASIC ROM for it, yes, I know I could download an image, but I don't have any spare carriers for the EPROMs). It doesn't have DDT, or ASM, or even ED. It does have the standard Utilities, PIP, STAT, FILINK, etc So, this is how I hacked it. Firstly, I fitted the PX4's PCB into the case, without the upper shield plate. Fitted the battery contacts, fitted the lower case and a few of the screws. Put the display PCB (uncased) in roughly the right position, fed the flexiprint through the case and plugged it in. Now, with the keyboard removed, I could get access to the solder side of the main PCB. And since the keyboard is just switches, it should be safe to fit and remove it with the thing powered up. Then I got out my PX8. At least this one has BASIC (althogh nothing else other than the utilities I mentioned above, no DDT, or ASM). And I ran this little BASIC program on it : 10 FOR B=0 TO 7 20 OPEN "O",#1,"A:BIT"+CHR$(48+B)+".COM" 30 PRINT #1,CHR$(243); 40 PRINT #1,CHR$(62);CHR$(2^B); 50 PRINT #1,CHR$(50);CHR$(255);CHR$(1); 60 PRINT #1,CHR$(195);CHR$(0);CHR$(1); 70 CLOSE #1 80 NEXT B 90 END This created 8 .COM files in the RAMdisk of the PX8. Each one was of the form : DI ; Don't want anything else messing around at the same time LD A,#01h ; Set bit 0 LD (01FFh), A ; Do a write to the RAM of that data word JP 0100h ; round again, remember CP/M .COM files load at 100h The other 7 programs write 02, 04, 08, 10, 20, 40, 80 hex respectively to RAM. Hand-assembled that using the Z80 data sheet and an HP16C, wrote the BASIC program above Put the PX4 keyboard in place, linked the 2 machines via the RS232 ports, and used FILINK to transfer the 8 files over to the PX4. Ran the first one, of course the machine locked up (it was supposed to). Removed the keyboard, connected Channel 1 of the LogicDart to pin 3 of one of the DRAM chips (Write enable/), probed with Channel 2 on pin 2 (Data In -- actually linked to Data Out on the same RAM, I checked this first!) of each of the DRAMs in turn until I found the one that had a high data line when the write pin went low. That was the RAM that stored bit 0. Reset the PX4 and was pleased to see that the RAMdisk was unchanged so I didn't have to download the programs from the PX8 again. Ran the next program, found the RAM chip that stored bit 1, and so on. -tony

20 years, 7 months

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RK07 questions - now RK611 questions

by henk.gooijen＠oce.com

You are correct, Tony, board swapping tricked me (this time)! I think I can forget the RK07 drive for now, and concentrate on the RK611 controller. First, I checked the flat cable from the controller M7904 (drive interface) module to the home-made bulkhead. That flat cable is 100% OK. The round cable from the bulkhead to the drive is NOS, and the label is 70-12292-25, so I'm sure it is the RK06/RK07 drive cable, not the RL0x cable. Before pulling out all kind of equipment, I started with what a DEC engineer probably also would do: run the diagnostics! So, I loaded XXDP and ran ZR6A??.??? which is the test "RK611 diskless controller diagnostic #1". Here is the output. .R ZR6A??.??? ZR6AD0.BIN RK611 DISKLESS DIAGNOSTIC: PART 1 CZR6AD0 @ ATTEMPTING TO CLEAR CS1 WITH A SUB CLEAR BUS ADD INCORRECT TEST ERROR NUM PC 000041 033024 PREV EXPECT ACTUAL VALUE VALVE VALVE 013776 000200 100200 So, there is already a problem with the RK611 controller reported after the diagnostic runs some 5 seconds! A few months ago I scanned a pile of XXDP doc, but the ZR6A et al. was not amongst them :-( I am not sure I have a spare RK611 controller board set (going to the attick after this e-mail), but can somebody tell me which board is likely to be suspected? thanks, - Henk. ________________________________ Van: cctalk-bounces at classiccmp.org namens Tony Duell Verzonden: zo 22-01-2006 19:51 Aan: cctalk at classiccmp.org Onderwerp: Re: RK07 questions > It also shows that I am not completely out of the weeds ... Do you know that the controller and cabling are OK? Or could the fault not be in the drive? -tony This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

2
1
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streaky printing?

by dwight.elvey＠amd.com

>From: "Philip Pemberton" <philpem at dsl.pipex.com> > >In message <200601200513.AAA06586 at Sparkle.Rodents.Montreal.QC.CA> > der Mouse <mouse at rodents.montreal.qc.ca> wrote: > >> Letting the printer sit will improve matters somewhat, but only >> somewhat; recently, I've even had the first page come out with some >> streakiness. > >I'd guess it could be the erase lamps for the photoconductor drum. If they're >not working properly (or firing then going out) then you might end up with >this fault. I'd defeat the interlocks and cartridge sensors, then cover the >laser aperture and see if the erase lamp comes on before the paper starts >feeding. IIRC the procedure is in the service manual. > >Failing that, it could be a dirty transfer wire, or maybe a dirty (or worn) >drum cleaning wiper. > Hi I had a similar problem that was buildup of toner on the drum. It would not completely erase. I tried just about everything and then finally changed the tone/drum unit. This fixed it. It seems that the drums get old just sitting. Like his, it would print the first sheet OK and then get worse as I printed more. I'd suspect that one could bake the drum and it would work better again. My guess is that it is moisture getting into the drum surface. The 3si uses the organic drum. Still, he should do a general cleanup of things. Dwight

20 years, 7 months

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streaky printing?

by dwight.elvey＠amd.com

>From: "Richard" <legalize at xmission.com> > > >In article <200601231747.JAA13413 at ca2h0430.amd.com>, > "Dwight Elvey" <dwight.elvey at amd.com> writes: > >> My personal opinion is that the drum absorbs some moisture >> and toner tends to stick to it in a non-static way. [...] > >I live in the desert and use my printer fairly often and I've had this >problem. Well, so much for the moisture theory. It definitely was connected to the toner cartridge. I'm wondering if it isn't the wiper somehow. When I looked at mine, the wiper looked to be in good shape but who knows, it might have just looked good. When I find time to fiddle, I might take the old cartridge out and give a really good inpection. Dwight

20 years, 7 months

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streaky printing?

by dwight.elvey＠amd.com

>From: ard at p850ug1.demon.co.uk > >> I had exactly the same problems with my 5M and after doing almost >> everything I could think of I finally read the manual (please don't >> quote me here :-). Turned out this symptom is most commonly fixed by >> replacing the toner cartridge which (perhaps not so surprisingly) >> fixed the problem. > >It would be interesting to know what went wrong with the old cartridge. >Is it that the drum is damaged in some way and doesn't discharge >properly usder the erasing lamps? Or is it that the wiper blade doesn't >clean the surface of the drum properly? Or what? > >-tony Hi My personal opinion is that the drum absorbs some moisture and toner tends to stick to it in a non-static way. On my machine it didn't happen when I was using it regularly but after some non-use in the winter time. The new drum works fine. It had the same problem. Right after turning on I'd get maybe two sheets printed before streaks would start to build up. Visual inspection of the drum showed toner remaining on the drum. I still have the old toner box and I've though of removing the drum and baking it for a while in the oven to see if it recovers. The toner is about half full. One can't bake both or the toner might turn into a lump. One would have to remove the drum. I've had one of these apart once and they are a little tricky to get apart but it can be done. Dwight

20 years, 7 months

3
3
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Potting compounds

by rcini＠optonline.net

All: I'm making that front panel power switch mod and I have a small 9v wall wart that I pulled apart, and a 9v relay. I want to encapsulate the whole thing in a box. I don't know much about potting compounds - what would be the best compound for this application? Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

20 years, 7 months

4
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streaky printing?

by Arno_1983＠gmx.de

der Mouse <mouse at Rodents.Montreal.QC.CA> wrote: > I have an HP LaserJet IIISi. (...) The second page exhibits a few > grey vertical streaks, worse towards the bottom of the page - not > clean vertical lines; it looks as though toner is getting into the > paper path where it shouldn't, and rubbing off on the page before > it hits the fuser. Printing more pages works fine, but they get > worse and worse. I've never had the streaks get so dark that I > can't read printing for them, but the printing definitely becomes > black-on-grey instead of black-on-white. ard at p850ug1.demon.co.uk (Tony Duell) wrote: > It would be interesting to know what went wrong with the old cartridge. > Is it that the drum is damaged in some way and doesn't discharge > properly usder the erasing lamps? Or is it that the wiper blade doesn't > clean the surface of the drum properly? Or what? Hmm, sounds a bit familiar. I had such problems with an HP LaserJet 4 and a Brother HL-1260 (which uses the same toner/drum unit) up to now. However, I didn't notice them being less streaky after being turned off for a while, so it might really be a problem with the erasing lamp or something similar in your case. You might want to test that by swapping another drum unit in. With me, the problem always was the drum wiper. You have to disassemble the drum/toner/waste toner cartridge a bit to get there (there's two plastic brackets fastened with screws on the top side with springs hidden underneath; remove those and the toner reservoir separates, then unscrew the right drum bearing - a metal part with a pin extending into the drum, two screws -, remove the drum and stick it in a dark bag or closet. I always worked in a darkened room up to here. Behind the drum, there is a black rubber roller that snaps out of two spring-loaded bearings, and a metal plate which holds the drum wiper (two screws). Remove that plate and while you're at it, empty the waste toner chamber behind it into a plastic bag. Then comes the tricky part - readjusting the wiper. It's a near-transparent elastic profile. Firstly clean it with a paper towel - there will be some toner on it. You may see it's a bit out of shape when the streaks have a characteristic distribution across the page; try to straighten the edge a bit. You can use bits of paper with holes punched under the areas where the metal is screwed to the plastic casing to bring the wiper towards the drum axis or to modify the angle under which it touches the drum surface when you reassemble the unit; it sometimes takes two or three attempts to get it right.) Of course, that only makes sense if there is still a substantial amount of toner in the cartridge; if not, changing it is perhaps better. -- Arno Kletzander Stud. Hilfskraft Informatik Sammlung Erlangen www.iser.uni-erlangen.de 10 GB Mailbox, 100 FreeSMS/Monat http://www.gmx.net/de/go/topmail +++ GMX - die erste Adresse f?r Mail, Message, More +++

20 years, 7 months

1
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RT11 manuals

by jim＠g1jbg.co.uk

Hi, does anyone have, or know of an online "quick reference" manual or similar for RT11 V5? I have just got RT11 on an 11/23+, but have never used the software before, so I'm very much in the dark! Alternatively, does anyone in the UK have a paper set of RT11 manuals that they no-longer have space for? Thanks Jim. Please see our website the " Vintage Communication Pages" at WWW.G1JBG.CO.UK

20 years, 7 months

3
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Tektronix 4010 hardware hacks

by legalize＠xmission.com

The 4010 consists of a card cage with a well defined bus interface. Has any hobbyist done a hardware hack by creating a card for its internal bus? -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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HP 9ks at Boeing (OT)

by compoobah＠valleyimplants.com

On Sat. Boeing surplus had a HP K460, K260 and V2200 for sale, $10 EA. This was about noon, don't know if they're still there.

20 years, 7 months

2
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Best computer history museums in the US?

by wbblair3＠yahoo.com

I've heard that the Computer History Museum in Mountain View CA is a good one. Any comments? If one had to choose only one (pre-PC) computer history museum to visit in the US, would that be the one to choose? Please provide leads to any other good computer museums in the US that have good hardware collections. I'm interested in pre-PC computer history only. The history of IC technology development also interests me and I'd enjoy hearing about any US museums/exhibits which focus on that topic. Thanks, Bill __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

3
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Compaq III Portable available in Virgina - free?

by tosteve＠yahoo.com

Do not email me, Steven, please respond to Don: -----> Compaq Portable III - plasma screen - 2 20M drives Hi, We're moving and I'd hate to junk this. Needs setup disk according to boot error. Otherwise in great shape. Let me know if you're interested. Thanks, Don donantal at comcast.net (h) 703-684-8401 (c) 703-624-8702 <----- __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

1
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Amiga help wanted in Spokane

by tosteve＠yahoo.com

Do not email me, Steven, please respond to PJ: ----> Name: PJ - allyn at nctv.com Does anyone know where I can get my Amiga A1000 and Amiga A2000 reparied. Preferably in the Spokane area? It would be very much appreciated. I can not get them to turn on! <---- __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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source of manuals for terminals, test equipment

by technobug＠comcast.net

On Sun, 22 Jan 2006 09:39:36 -0700, Richard <legalize at xmission.com> wrote: > Stumbled across this today, maybe it will come in handy for someone: > <http://www.yourmanualsource.com/> > A good set of links: <http://www.big-list.com/usedmanu.html> - a little dated, but fairly complete. On great site for free manuals is: <http://bama.sbc.edu/> CRC

20 years, 7 months

1
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2.11BSD

by healyzh＠aracnet.com

I'm trying to update stuff on the DEC Emulation website. What is the current status of 2.11BSD, and where would one go to find the patch archive these days? Zane -- -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

20 years, 7 months

2
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RK07 questions

by henk.gooijen＠oce.com

I did a few more tests with the RK07. As I did not have the correct bulkhead, I made one from a "decommissioned" RL02 drive. The socket to the cable is identical to the one for the RK07. As nothing seemed to work, I guessed that I might have the flatcable between the socket on the "bulkhead" and the RK611 controller (M7904 module) the wrong way around installed. So, I installed the flatcable the other way around on the bulkhead. I get quite different responses now! The command ".INIT DM0:" gives the response "?DUP-F-Error reading bad block replacement table DM0:" but the FAULT light is turned on! When I enter the command ".FORMAT DM0:", the FAULT light goes off, and I get the response as written in my previous post. When I enter "DIR DM0:" the FAULT light is turned on also. On many occasions the system hangs, although that is not apparent >from the front panel on the 11/34. But the system does not respond nor echo anything I type on the VT100 console terminal anymore. What is even more strange, is that when I repeat (after rebooting) the .INIT command or the .FORMAT command, is that I can see clearly the READY lamp flash off/on, and after a few more attempts, I can hear the movement, and *see* the whole drive "shake" (it still on its wheels and not on the rubber "feet"). I can even see the "A" lamp go on and off a few times, so that shows that the controller accesses the drive. Then the system hangs again. Can I conclude that the cable is now correctly connected from the RK611 controller -> bulkhead -> RK07 drive ? What could explain the symptoms that I see? - what can cause the system non-responsive (RT11 does not catch the error) - why does the execution of the command seems to get a step further every time I run them? thanks, - Henk. ________________________________ Van: cctalk-bounces at classiccmp.org namens Gooijen, Henk Verzonden: zo 22-01-2006 12:53 Aan: General Discussion: On-Topic and Off-Topic Posts Onderwerp: RE: RK07 questions I must make a correction to a remark I made on a reply of Tony. Tony wrote to FORMAT the RK07 pack. I told that under RT11, you can use INIT, but to FORMAT you need XXDP. Allthough that can be true for some media, I was wrong regarding the RK07. Perhaps I was a bit mislead by my RK07 drive, but the following tests show that Tony was correct. I booted RT11 on the 11/34 from DL0:. These are the commands and their responses that I got, after I loaded a pack (and READY on) .DIR DM0: ?DIR-F-Error reading directory .INIT DM0: DM0:Initialize: Are you sure? Y ?DUP-F-Size function failed .FORMAT DM0: DM0:FORMAT-Are you sure? Y ?FORMAT-F-Device not ready ?FORMAT-I-Formatting aborted Looking at the RT11 response, it seems that FORMAT is supported for the RK07, just as Tony said! It also shows that I am not completely out of the weeds ... - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

2
1
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RK07 questions

by henk.gooijen＠oce.com

I must make a correction to a remark I made on a reply of Tony. Tony wrote to FORMAT the RK07 pack. I told that under RT11, you can use INIT, but to FORMAT you need XXDP. Allthough that can be true for some media, I was wrong regarding the RK07. Perhaps I was a bit mislead by my RK07 drive, but the following tests show that Tony was correct. I booted RT11 on the 11/34 from DL0:. These are the commands and their responses that I got, after I loaded a pack (and READY on) .DIR DM0: ?DIR-F-Error reading directory .INIT DM0: DM0:Initialize: Are you sure? Y ?DUP-F-Size function failed .FORMAT DM0: DM0:FORMAT-Are you sure? Y ?FORMAT-F-Device not ready ?FORMAT-I-Formatting aborted Looking at the RT11 response, it seems that FORMAT is supported for the RK07, just as Tony said! It also shows that I am not completely out of the weeds ... - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

2
1
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cctech list

by wbblair3＠yahoo.com

Is the moderator of cctech on vacation or has that list been merged with this one? I've tried to subscribe twice and haven't yet received a single digest. My cctalk subscription succeeded the same day (obviously). Thanks, Bill Colorado Springs, CO __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

2
1
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source of manuals for terminals, test equipment

by legalize＠xmission.com

Stumbled across this today, maybe it will come in handy for someone: <http://www.yourmanualsource.com/> -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

1
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Fuji 2444 tape drive power cord

by shoppa_classiccmp＠trailing-edge.com

Somebody here asked about the Fuji 2444 tape drive power cord in the past couple of months. Sweeping up my basement, I found an example, and for future reference the connector is made by AMP, and it has the numbers 8542 and 206037-2 on the locking ring. If anyone wants this cord, they can E-mail me with their shipping address and we'll work out getting it to them. I think the locking ring on this particular cord is missing part of the locking ring (although it seems to mostly be there and it still rotates like I'd expect.) Tim.

20 years, 7 months

1
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AMI S1427A clock chip? (in a Pernicka model 100-C Precision Chronometer)

by ethan.dicks＠gmail.com

Does anyone have a data sheet on an AMI S1427A clock chip? I have this Pernicka Corp 'Model 100-C' panel-mount clock (S/N C008). The clock itself is self-contained - runs off of a 9V battery, has two switches for setting the time and date, and is set in a nice round panel-mount housing. The PCB has just the chip (with a date code of 7728), 3 diodes, 2 resistors, 2 caps, a crystal and a trimmer. The S1427A drives a 4-digit unbuffered LCD panel. Thanks for any pointers, -ethan

20 years, 7 months

1
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Qume DT-8 Schematic

by cclist＠sydex.com

Anyone got the schematics for a Qume DT-8 8" floppy drive? Mine quit delivering a signal from either head suddenly, so it's time to pull out the soldering iron. Thanks, Chuck

20 years, 7 months

1
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sun 800/1600/6250 drive

by aek＠bitsavers.org

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5856102422 this is interesting because it's $100 with reasonable shipping and every Sun OEMed 88780 i've seen can support 800bpi.

20 years, 7 months

2
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pertec tape drive interface card for pdp-11/03?

by legalize＠xmission.com

Does such a thing exist? The peripherals handbook I got with my 11/03 doesn't list such a thing, but I can imagine that there are Q-bus tape drive controllers that talk to a pertec interface that would work. -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

7
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Homebuilt relay computer

by jcwren＠jcwren.com

<URL: http://www.cs.pdx.edu/~harry/Relay/index.html >

20 years, 7 months

3
2
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Atari Portfolio or HP200LX

by mokuba＠gmail.com

I'm looking for an Atari portfolio or hp200lx ! Preferably around $20, though I know that's not really all that reasonable, it's my available funds .... Any pointers or offers would be nice :)

20 years, 7 months

2
1
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wanted Sun lunchboxes in Spain

by ama＠ugr.es

Hello, I am interested in getting Sun lunchbox systems (LX, Classic, IPC, IPX) in Spain. Is there somebody around who has some of them or knows where/how to get them? Thank you, ?ngel P.S.: Other Sun systems might interest me as well (I actually take anything from Sun Microsystems which I find for free or reaally cheap). -- Angel Martin Alganza Tel +34 958 248 926 Departamento de Genetica Fax +34 958 244 073 Universidad de Granada mailto:ama at ugr.es C/ Fuentenueva s/n http://www.ugr.es/~ama E-18071 Granada, Spain JabberID alganza at jabber.org ------------------------------------------------------ /~\ The ASCII PGP Public key: \ / Ribbon Campaign www.ugr.es/~ama/ama-pgp-key X Against HTML Email 3EB2 967A 9404 6585 7086 / \ and MS attachments 8811 2CEC 2F81 9341 E591 Please avoid sending me Word or PowerPoint attachments http://www.gnu.org/philosophy/no-word-attachments.html

20 years, 7 months

1
0
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cctech list

by henk.gooijen＠oce.com

Hi William, I think the moderator (Jay) *wished* he had a vacation. He posted the reason why he can not pay much attention to cctech (at this moment) last week. IIRC, his mother is in the hospital. There are more people that moderate the postings to cctech, but if you successfully subscribed to cctalk, there is no need to subscribe to cctech ... unless you want to receive on-topic messages twice! cctech = tech only, cctalk = cctech + off-topic postings. welcome to the list, - Henk, PA8PDP. ________________________________ Van: cctalk-bounces at classiccmp.org namens William Blair Verzonden: vr 20-01-2006 21:30 Aan: cctalk at classiccmp.org Onderwerp: cctech list Is the moderator of cctech on vacation or has that list been merged with this one? I've tried to subscribe twice and haven't yet received a single digest. My cctalk subscription succeeded the same day (obviously). Thanks, Bill Colorado Springs, CO This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

1
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"the well known plotting bugs of the original 4010"

by legalize＠xmission.com

<http://www.rdrop.com/~jimw/jcgm-io.shtml#IO%20Devices> drops this phrase in the discussion of add-ons to the Heathkit H-19 video terminal. Just what were "the well known plotting bugs of the original 4010"? Since I have a 4010, I'm keen to know :-) -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

3
5
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RK07 questions

by henk.gooijen＠oce.com

Wow, thanks Tony! I had not even had the time to pull the RK07 diagrams from the stack! This gives me a jump start, and I hope to get to it this weekend. I'll let you know ... thanks, - Henk. Tone wrote: > OK, I've dug out my prints... > [ snip ] > -tony This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

2
1
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CGA 160x100 mode? (was: Preventing CGA revisionist history)

by cpg＠aladdin.de

Original Message from Stan Barr > > Hi, > > Christian Groessler said: > > Hi, > > > > regarding the CGA, the technical manual mentions a 160x200 mode with > > more that 4 colors. It doesn't give any more information on how to > > enable this mode, though. > > > > Does anyone on this list know how to enable this mode, or > better, has > > a demo program which does that? > > I thought that was only on the PCJr. Anyway my notes say it's video > mode 8. I just looked at the PC (no Jr) technical manual again, and I was remembering incorrectly, the mode was 160x100, not 160x200. And it should be able to display 16 colors. I cannot recall any program using this mode (at least I didn't notice at the time). Does it really exist? regards, chris

20 years, 7 months

3
3
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HP 88780 tape loading questions

by jfoust＠threedee.com

I tried the Overland Data 5622 I bought; it seems to have big troubles. On power-up, "Alert" blinks and it won't load - none of the buttons work. I've temporarily given up on the M4 9914 and exploring the HP 88780. It loads a tape almost always. It catches on the takeup reel, whips into high-speed mode, then Test 0 passes. I've run a few of the most interesting interactive test sequences. NVRAM, timer, DAC, ADC, tach, motor loop, tension limit and sensors, speed encoder, tape sensors, BOT/EOT sensors all OK. Test 1 with a scratch tape fails within test 165 "load tape", followed by "ERR 60". Bitsaver's 7980 manual on page 5-119 (PDF pg. 186) says error 60 is "tracks with gain too low and too high during autocal." Does this mean I need to clear the NVRAM and run the "test 99" calibration? I haven't changed or recorded the NVRAM values yet. Should I bother? Anyone have experience with http://www.comco-inc.com/ ? They're only a few hours away. - John

20 years, 7 months

3
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cctech Digest, Vol 29, Issue 43

by terry＠terryking.us

At 12:01 PM 1/19/2006 -0600, you wrote: >Subject: deformatting floppies > > >I would have thought it best to take a magnet to a hd >disk before popping in a 720k drive to be formatted, >but it seems to not have any (or much) effect. Even >using a chunky rare earth magnet! Can someone explain? NOT a good idea: using a PERMANENT magnet. Could leave permanent magnetism on the HEADS. I have been successful using a "bulk tape eraser" from Radio Shack.. The kind useable on tape cassettes would be OK.. Move the disk around a few times in contact with the eraser, then turn at right angles and SLOWLY draw it away. Think slowly decreasing sine wave. This should demagnetize the disk well, and MOST disks that give "Bad Media or Track Zero" can be formatted. Regards, Terry King ...On The Mediterranean in Carthage, Tunisia terry at terryking.us

20 years, 7 months

4
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CPM22 - The band

by chrism3667＠yahoo.com

the genre - undoubtably techno. But regardless you all are way weird LOL LOL. --- cctech-bounces at classiccmp.org <aw288 at osfn.org> wrote: > > I have no idea what the music genre is, but the name struck me as amusing > > There is also a Euopean band called Univaque. > > William Donzelli > aw288 at osfn.org > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

1
0
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CPM22 - The band

by jcwren＠jcwren.com

I have no idea what the music genre is, but the name struck me as amusing <URL: http://music.allofmp3.com/r2/CPM22/Felicidade_Instantanea/group_9895/album_… > --jc

20 years, 7 months

2
1
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HP9000/382 docs

by ard＠p850ug1.demon.co.uk

Somebody here (Joe?) was asking for configuration infromation for the HP9000/382 I think There's a CE handbook (boardswapper guide ;-)) on http://www.hpmuseum.net/ It has some info on the video links, but from what I can see there are just 2 of them. One disables the on-board video (and allows the use of a DIO video card), the other must be set to the 'Color' position. That site has quite a number of useful HP manuals for larger-than-calculator machines. IIRC it starts from the 2114/2116/2100A series and gores on to the 9000s. Calculators from the 9100 to the 9845 (and HP80 series too). And printers, plotters, storage peripherals, etc. I find it best to follow the 'documentation' on the home page, rather than try to negotiate the individual machine pages. -tony

20 years, 7 months

1
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Ebay Northstar Horizon

by dwight.elvey＠amd.com

>From: "Chuck Guzis" <cclist at sydex.com> > >On 1/19/2006 at 3:06 PM Dwight Elvey wrote: > >> Yes, Intel did this on their Series II machines after >>they had static problems. It killed two birds. Both >>the static problem and the RFI. > >IIRC, the Intel boxes weren't plastic per se, but rather high-density >structural foam. I recall that the model shop guys built the first >enclosure for our prototype using acrylic (Plexiglas), which being clear >looked pretty nifty, but then moved to foam once the design was finalized. > The foam was funny--the shop devised a gag of making root beer ice-cream >floats in paper cups and interspersing a couple in the bunch filled with >structural foam, complete with straw and plastic spoon. > >AFAIK, all such enclosures are painted--the native color of structural foam >is an unappealing yellow brown. Most of the paint shops added zinc arc >coatings once using foam caught on. > >Cheers, >Chuck > > Hi Chuck The early intel ones were just painted with the Intel blue. It wasn't until after the static discharge problems became recognized that they started to use the internal coat and connected it to ground. But, yes, it was not plastic. It was a lot lighter than plastic but the entire unit is still quite heavy. It was still using linear supplies. Dwight

20 years, 7 months

1
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Ebay Northstar Horizon

by dwight.elvey＠amd.com

>From: "Chuck Guzis" <cclist at sydex.com> > >On 1/19/2006 at 1:45 PM Dwight Elvey wrote: > >> Not on the Plymophic ones. It is just a wood cover over a U >>shaped metal chassis. I've not checked to see how much it >>does radiate to radios and TV's. I suspect it isn't much >>worse than a typical home setup with unshielded cables >>to printers and such. > >Fortunately, there exists special paint to deal with the RFI problem: > >http://www.mgchemicals.com/products/841.html > >is one and there are others. > >A lot of the plastic enclosures were simply zinc arc coated. > >Cheers, >Chuck > Hi Yes, Intel did this on their Series II machines after they had static problems. It killed two birds. Both the static problem and the RFI. Note: I miss-spelled Polymorphic. Later Dwight

20 years, 7 months

2
1
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batch on rt11 w/tsx+

by jwest＠classiccmp.org

I was wondering if somone knew the answer to this... is BATCH supported on RT11 that is running TSX+? I know it's supported on RT11, but I thought I saw somewhere that once you loaded TSX+ that you couldn't run BATCH because of some conflict. Anyone know the straight scoop on this? Jay West

20 years, 7 months

3
8
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HP82971 ROM/EPROM module

by ard＠p850ug1.demon.co.uk

I've just got an HP82971A RPTOM/ROM module on E-bay... I thought from the description and part number that this was probably for the HP Integral PC. And it seems I was right. I've not fully investigated it yet, but I've traced a few connections from the DIN 41612 connector through buffers to the EPROM sockets, and they all make sense. It's a single PCB, normal Integral expansion card size, with the plastic cover on the bottom and the normal bracket on the back. On the board are a few TTL chips, mostly buffers, 16 28-pin DIL sockets for the EPROMs, 3 8-poisition DIP switches and not a lot else >From a quick look at the conenctions, it would appear that the DIP switches set the start address and also configure the board for one of 3 different types of EPROM (I would guess either 2764, 27128, 27256 or 27128, 27256, 27512). I think all EPROMs have to be the same type. The sockets are helpfully labelled 0L, 0H up to 7L, 7H. There's also a 64 pin header socket and mounting pillars for a daughterboard. The socket iw wired pin-for-pin with the DIN41612 socket that plugs into the Integral backplane. And the 2 EPROM sockets near the centre of the bracket are actually individual contacts soldered into the PCB, thuse making those lower profile than the others and leaving space for a connector on the daughterboard to come through a hole in the bracket. I am sure the hardware won't bother me at all, but I don't know the format of the ROM images. I asusme they appear as a read-only filesystem to HPUX, and that there are therfore headers in each EPROM containing the filenames, sizes, start location, etc. Any ideas as to the format of that? -tony

20 years, 7 months

1
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Ebay Northstar Horizon

by dwight.elvey＠amd.com

>From: "Richard" <legalize at xmission.com> > > >In article <005001c61d33$2c0fac00$0200a8c0 at ntlworld.com>, > "Jim Beacon" <jim at g1jbg.co.uk> writes: > >> A UK firm, local to my parents was offering PCs in wooden cases last year. > >Hopefully the wood was a cosmetic look for the exterior of the case >and they had some sort of shielding inside! Hi Not on the Plymophic ones. It is just a wood cover over a U shaped metal chassis. I've not checked to see how much it does radiate to radios and TV's. I suspect it isn't much worse than a typical home setup with unshielded cables to printers and such. Dwight

20 years, 7 months

2
1
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RK07 questions

by henk.gooijen＠oce.com

> No, it's not 'just like the RL01'. The RL's have embedded > servo bursts -- tht is there are servo signals in the sector > header regions of each data surface. The same head reads the > servo signals and the data. Correct again Tony :-) My mistake. > The RK07 has a seperate servo surface. There are 4 surfaces > (2 platters) in the pack. One surface and its head is just > servo signals. The other 3 surfaces are just user data (and > sector headers, etc). That's what I've read too. Just a stupid mistake to compare the RK07 with the RL02. > Ah, right.... Remember I am a hardware person and deal with > gates and op-amps :-) Yep, I know! > OK. It sounds like your drive is basically working. What I'd > do at this point is look at the prints to see what should > drive the ready lamp. And then check back from the output > stage until you can find out why it's not being turned on. I > can dig out my prints and take a look too. That's exactly what I intend to do :-) but I will first have a look on the behaviour of the other two drives, while I'm at it. thanks, - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

2
1
0 0

MASM 6.1 vs 6.11

by mbbrutman-cctalk＠brutman.com

I've been on a little purchasing kick lately and I finally have MS MASM 6.1 with paper docs. I'd like to know what was fixed between 6.1 and the later versions, such as 6.11 and 6.14. Can any of you who have those later versions send me the 'readme' or scan any paper sheets that might have described the differences? When I grow up, I'm going to create BIOS ROM extensions for ancient hardware ... Thanks, Mike

20 years, 7 months

10
24
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M4 9914 tape loading questions

by jfoust＠threedee.com

I'm tinkering with the first of the three 9-track units I acquired recently. This is the M4 9914, a seemingly very nice unit in that it was clean, powers up and acts from the front panel buttons, and that it handles 800 BPI as well as 1600 and 6250. Mind you, I'm old enough to still have a stack of tapes that I used in college in the early 80s, but I'm not old enough to have worked behind the counter with the big VAXes and UNIVAC. I might've written a tape or two in person under PDP Unix, but I probably did it under the watchful eyes of someone more experienced. The first time I tried to load a tape, the vacuum fed the tape correctly back to the takeup reel but it was not picked up on the reel. The notched leader on the tape is in good shape, but it did not engage. I unscrewed the top of the takeup reel and was puzzled. I expected to see a mechanism to hook the leader (as you see inside a DLT, for example.) The takeup reel hub is smooth. It does have openings on the lower half, and the hub is certainly part of the vacuum path. Is vacuum alone supposed to grab the tape and hold it to the takeup reel? Most other times I loaded a tape, the tape didn't move smoothly back to the take reel. It bunched up after hitting obstacles along the path. I do not yet have the user or service manuals for the M4 9914. I did find several manuals for similar units (HP 88780) on Bitsavers. I googled quite a bit to find the definitive 9-track history and preservation site but I haven't found it yet... - John

20 years, 7 months

3
3
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Ebay Northstar Horizon

by marvin＠rain.org

I was just checking out some stuff on ebay (hanging my head) and ran across a Northstar Horizon that sold for $551.00. In it, the (fiction?) writer says: "Originally, the cases were wooden, but the company soon switched to a blue metal cover. Hence, those computers with original wooden cases are more highly sought after than those with the more common metal cases." Also: "The only known computer to be sold in a wooden case, this collector's item features its original, walnut-stained wooden case." Looks like some just plain wrong information, but ... 1) Were there more metal case Horizons sold than wooden case and did they "soon" switch to a metal case? 2) What other computers were sold in a "wooden case"? The Sol-20 comes instantly to mind as well as the Polymorphic 8010 and 8013 series of computers. How many others were there?

20 years, 7 months

6
6
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Ebay Northstar Horizon

by dwight.elvey＠amd.com

>From: "Marvin Johnston" <marvin at rain.org> > > >I was just checking out some stuff on ebay (hanging my head) and ran >across a Northstar Horizon that sold for $551.00. In it, the (fiction?) >writer says: > >"Originally, the cases were wooden, but the company soon switched to a >blue metal cover. Hence, those computers with original wooden cases are >more highly sought after than those with the more common metal cases." Hi I suspect that there were more metal case unit sold. Most of these were used in rack mounted applications and were crunched up when the machines they were in were destroyed. I don't think that the RFI was an issue when N* was making the wooden cased units. I think that came on later. The wooden cases were just to make desk units look pretty. I believe they sold both the metal cased and wooden cased units at the same time. Dwight > >Also: > >"The only known computer to be sold in a wooden case, this collector's >item features its original, walnut-stained wooden case." > >Looks like some just plain wrong information, but ... > >1) Were there more metal case Horizons sold than wooden case and did >they "soon" switch to a metal case? > >2) What other computers were sold in a "wooden case"? The Sol-20 comes >instantly to mind as well as the Polymorphic 8010 and 8013 series of >computers. How many others were there?

20 years, 7 months

1
0
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Panasonic HHC (Moto 68764) chips & carriers

by zmerch＠30below.com

Just in case anyone was wondering what the Panasonic HHC chips w/ carriers (Motorol a 68764 / 68766 EPROMS) looked like, I took a few pictures this morning and put 'em in a subdirectory on the web. I tried to get you as many angles & whatnot as I can, and my camera's a "lo-end pro" 6MP (Nikon D70) but with no macro lens, I had to crop the pix some. If you need more detail, lemme know and I can take more pix tonite. The cropped .jpgs are around 500K each. The resolution is around 2000x700 pixels or so. http://www.30below.com/~zmerch/classics/chips/ These chips are indicative of what I have "straight outta da bag" - they'll need to be cleaned (some still have labels) before being erased but if I see any physical defects I throw 'em away. Anywho, as always, if you have any questions, please feel free to ask! Roger "Merch" Merchberger -- Roger "Merch" Merchberger | "Bugs of a feather flock together." sysadmin, Iceberg Computers | Russell Nelson zmerch at 30below.com |

20 years, 7 months

1
0
0 0

Color keytops

by jack.rubin＠ameritech.net

Gene, Check out www.arkayengravers.com/ Jack ************************************ Message: 9 Date: Tue, 17 Jan 2006 17:59:38 -0800 (PST) From: Fred Cisin <cisin at xenosoft.com> Subject: Re: Color keytops... To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <20060117175830.Q22969 at shell.lmi.net> Content-Type: TEXT/PLAIN; charset=US-ASCII On Tue, 17 Jan 2006, Gene Buckle wrote: > Is there any place to purchase colored keytops for a Model M keyboard? > I recall seeing in the distant past colored keytops for the ALT, > SHIFT, CTRL, etc. keys. Google hasn't been much help either. tnx! There used to be third party ones specifically for use with Word-Pervert; try including WordPerfect in your searches

20 years, 7 months

3
2
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looking for RX01 device IOTs for the PDP8/e

by Bob.Adamson＠sli-institute.ac.uk

Hmmm! - did you think that you'd find an RX01 in a 1970 data book? Bob tpeters at mixcom.com wrote: > I have the PDP-8e Intro to Programming (1970). I'm not exactly sure what > you're looking for. If you think it's in there, I'd be happy to look for > you. However, all I see here are IOTs for TU58, drum disks, scopes, > recording voltmeters, TTY's, and etc. Nothing that explicitly says RX01. > > At 10:55 AM 1/13/2006 +0100, you wrote: >> Great! Thanks Vince. >> IIRC, I have also gotten the IOTs for the RF08 from Dough's >> site, (and the 'tricky' ones like GTF and RTF), but somehow >> I did not see this RX01 page! >> I have printed those pages already to study them! >> >> - Henk, PA8PDP.

20 years, 7 months

2
1
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Sort of OT; new eBay phish

by doc＠mdrconsult.com

A quick warning because I know a lot of y'all deal extensively on eBay, and I obviously hadn't seen this one before. I just got a phished "My Messages" eBay email from "a potential buyer". It purported to be a question about a listed item, and the links to the listing took me to a fake login page. It's very slick, I wasn't paying attention and I fell for it. What's really ugly is that the phishing site actually *does* bounce you into your own account and log you in. And hell yes I just changed my password. And my Paypal password. Doc

20 years, 7 months

7
14
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RK07 questions

by henk.gooijen＠oce.com

I will first describe the results that I saw with looking at the LEDs on the boards in the small rack inside the RK07 drive. A small LED on the outer board (M9016) is always ON. In the stand-by condition the UNLD HDS LED is ON. When I load a pack, and push the LOAD button, the LEDs SPEED OK and BRUSH go ON after approx 15 seconds. A number of seconds later the LEDs BRUSH and UNLD HDS go OFF. At that same time the LEDs LD HDS en FWD go ON and the heads move toward the centre of the spindle. When the head has reached that position, the LEDs LD HDS and FWD go OFF, and RTZ and REV go ON. The head moves back, and when the heads are on "track 0" (this is an assumption) those two LEDs go OFF too. Only the SPEED OK LED is still ON. --- I will have to boot RT11 to tell the error message. AFAIK, you can not format the pack, only do an INIT. I did not check the cable to the controller and to the next drive, but I am pretty sure they are in the port A connections. As the second drive is OFF (and has the terminator), and the controller is OFF, I guess that this does not interfere with the load sequence getting to the READY lamp ON state. I can see the motor that drives the spindle runs, and the belt is OK. It must be driving the platters, otherwise I think the SPEED OK LED would not turn ON. Indeed, there are 4 heads. The wires from one is clearly connected to a different board, so that must be the servo data. I will do your experiment, Tony. And no, I will not blame you if the heads crash :-) Good to hear that no FAULT light ON is OK. I can also try the second drive this weekend, but I must remove the brushes from that drive first. I have a third drive (!) but then I must move stuff around to get to it ... thanks, - Henk. ________________________________ Van: cctalk-bounces at classiccmp.org namens Tony Duell Verzonden: di 17-01-2006 21:46 Aan: cctalk at classiccmp.org Onderwerp: Re: RK07 questions > > Hi all, > > I am working on the last peripheral device connected to > my 11/34, two RK07s. This will be my first experience > with RK07 drives, so I have a few questions. > > I installed the RK611 in the system (in an expansion box) > and made sure that the UNIBUS is OK. The 11/34 starts, and > I can boot RT11 from DL0:. ".SH DEV" shows that the DM.SYS > driver is installed. However, after loading a pack the RT11 > commands ".DIR DM0:" or ".INIT DM0:" report an error. What error do you get. IIRC the RK07 pack can be formatted (this does a low-level format of the data surfaces). You need to do that before INITing in most cases. > I must say that the READY light did not turn ON on the drive. > I switched the 11/34 OFF, because I think I need to take a > closer look at the RK07 drive itself first. > Here is what I did and saw. > > I removed the metal cover at the top-rear side. Now you can > see the big magnet and the head assembly. I first checked You can also swing the card cage assembly twards the rear of the drive. Make sure you have the cables connected correnctly (IN and OUT are not the same on these drives -- the controller must connect to an 'IN' connector, the terminator to an OUT connector. Unless you have a dual-ported drive, use the 'A' connectors, make sure you have the interface card in the right slot of the cardcage, and press the 'A' button on the front). On the top of some of the boards are LEDs. The plastic cover over the boards identifies them. What do they do at spin-up? > the "emergency retract" mechanism. When you push down the > lever that locks the heads, and gently push the head assembly > forward toward the cartridge compartment, the heads are pulled > back as soon as the little microswitch is (dis)engaged. OK so the 9.6V NiCd under the chassis is still good. > Then I loaded a pack and pushed the LOAD button. > After some 20 seconds the disk has spun up (I assume), because > the heads start to move. You should hear the spindle motor start running. Mind you, if it wasn't, you'd get some very nasty noises when the heads moved. > The heads first move at a moderate speed toward the centre of > the cartridge (I would say a full travel), stop, and then move > back at that same speed, but not completely to the home position. I think that is correct. The heads do a full seek to the inner guard band, then return to cylinder 0. > Again, I *assume* that the heads detected track 0 and stay there. > However, the READY lamp does not go ON. It could not, because > the lamp was defective :-) After replacing the lamp with a > checked-good lamp, I repeated the exercise. The heads show the > same movement, but the READY light stays OFF. > > 1. Is that head movement behaviour correct? I think so. > I will try to make a movie of the movement this weekend ... > 2. What would the head movement be if the pack was bulk-erased? I would think they'd go towards the spindle and then return to the unloaded position as the drive wouldn't find any servo information at all. I've not tried this, so don't blame me if the heads run into the spindle or something horrible, but you could unplug the servo head from the servo preamplifer and try again. With no servo signals at all, you'd be simulating a bulk-erased pack. Look for a change in behaviour. IIRC there are 4 heads in the RK07. All 4 head cables plug into the read/write board, but one of them has another connector coming from it. That's the servo head. The 'connector' on that head on the R/W board is just to anchor the cable, it's the end-of-cable connector that plugs into the servo preamplifier that you might disocnnect. > 3. Should the READY lamp go ON? I think so, but it's been a long time. > > An other thing I noticed. > As the 11/34 is OFF, there is no controller connected to the > RK07 drive. OK, it is, but not powered. > With the RL drives the FAULT lamp will be ON if the controller > is not powered. Is this the same for the RK07? No, an RK07 will spin up and load the heads without a controller. No FAULT lamp. -tony This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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NEC APC III

by dcosentino＠schange.com

Hi Peter, I'm not sure if you'll get this or not, but I used to work for NEC (until 6mos ago) for 19 years. I was part of the first US assembly team that re-assembled APC III and APC IV computers. That was back in 1986. Because of the tariffs imposed on Japan, we received computers that were previously assembled and tested in Japan, then disassembled and sent to the US for re-assembly. "Nothing's better to fix than my 8086!" Don Cosentino SeaChange International 978-889-3418

20 years, 7 months

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RX11 emulator fun ...

by henk.gooijen＠oce.com

Yes, why not :-) Now you only need the PDP-11/xx CPU box. The Libretto can double-function as terminal and as mass storage (remember, Pete also makes a so-called XX driver available. When you copy the XX.SYS to the PDP-11 system, you can have (non-standard) virtual "RX01" floppies of 16 Mb ! That's half the max partition size in RT11. In the XM monitor that would be the XXX driver :-) - Henk. ________________________________ Van: cctalk-bounces at classiccmp.org namens Gordon JC Pearce Verzonden: wo 18-01-2006 22:44 Aan: On-Topic and Off-Topic Posts Onderwerp: Re: RX11 emulator fun ... Gooijen, Henk wrote: > here is the picture: http://www.pdp-11.nl/rx11emul.jpg <http://www.pdp-11.nl/rx11emul.jpg> (104 kb, resized to 819 x 614). Heh. I use minicom on my Libretto as a terminal for my PDP-11. Gordon. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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RX11 emulator fun ...

by henk.gooijen＠oce.com

here is the picture: http://www.pdp-11.nl/rx11emul.jpg (104 kb, resized to 819 x 614). - Henk. ________________________________ Van: cctalk-bounces at classiccmp.org namens Gooijen, Henk Verzonden: wo 18-01-2006 22:16 Aan: cctalk at classiccmp.org Onderwerp: RX11 emulator fun ... Hi all, just a good feeling to share ... I finished the prototype setup for the RX11 emulator of Pete McCollum. I installed his design together with the M105 and M7821 in my 11/34. I first booted RT11 (v5) from RL02. RXEMU is running on a PC that is connected to Pete's board via the parallel port. (A note on that PC at the end...) ".SH DEV" shows "DX Installed 177170 264". Then I did ".DIR DX0:" , and behold, I got the list output from DX0: !! Then I entered ".BOOT /FOR DX0:" ... OK, that takes some time, but then I got "RT-11SJ V04.00A". COOL !! Pete's RX11 emulator works great. I also loaded the small bootstrap that Pete included in the ZIP file into the memory of the just turned on 11/34. When I start the loaded code, it boots right away from "nothing" from the virtual RX01 floppy on the PC! What fun !! A note on the PC that I use to run RXEMU .... it is a Toshiba Libretto 100CT !!! The size of that "sub-notebook" is about the same size as a VHS cassette. I was laughing to see the big PDP-11/34 boot from the tiny Libretto :-) I took a picture. If it's of resonable quality I will post a link. In one word: GREAT !!! - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

2
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RX11 emulator fun ...

by henk.gooijen＠oce.com

Hi all, just a good feeling to share ... I finished the prototype setup for the RX11 emulator of Pete McCollum. I installed his design together with the M105 and M7821 in my 11/34. I first booted RT11 (v5) from RL02. RXEMU is running on a PC that is connected to Pete's board via the parallel port. (A note on that PC at the end...) ".SH DEV" shows "DX Installed 177170 264". Then I did ".DIR DX0:" , and behold, I got the list output from DX0: !! Then I entered ".BOOT /FOR DX0:" ... OK, that takes some time, but then I got "RT-11SJ V04.00A". COOL !! Pete's RX11 emulator works great. I also loaded the small bootstrap that Pete included in the ZIP file into the memory of the just turned on 11/34. When I start the loaded code, it boots right away from "nothing" from the virtual RX01 floppy on the PC! What fun !! A note on the PC that I use to run RXEMU .... it is a Toshiba Libretto 100CT !!! The size of that "sub-notebook" is about the same size as a VHS cassette. I was laughing to see the big PDP-11/34 boot from the tiny Libretto :-) I took a picture. If it's of resonable quality I will post a link. In one word: GREAT !!! - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

1
0
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HP 9000 382 video switch settings?

by rigdonj＠cfl.rr.com

Does anyone know how to change the video settings in the HP 382 computer? (I think the main board is the same for the 9000/380). The 382 has a VGA type video port but my monitor keeps reporting "Unsupported Mode". Joe

20 years, 7 months

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hp 6286a supply

by technobug＠comcast.net

On Fri, 13 Jan 2006 09:09:26 -0500, Brad Parker <brad at heeltoe.com> wrote: > Hi > > I've got an old HP 6286a bench supply. It's been sitting for a while > and I turned it on and discovered it seems to have no voltage > regulation > - it gives out about 23VDC not matter what. The current regulation > seems to work however. > Does the voltage drop down from 23VDC when you limit current? Shorting the output and playing with the current control will indicate that the current limit is working and that the output transistors are okay. A better test is to place a low-valued resistor across the output and limit current while measuring the voltage across the resistor. This will tell you that the output stage is working. > Anyone ever look inside of one of these? It looks like a nice supply > and I hate to toss it. > > -brad The 6286a is a 20V, 10A supply with voltage and current controls. Great for reforming caps and testing old hardware. I would make an effort to resurrect the beast. I have found in a number of supplies the front panel adjustable pots open up or the wiper go south. This will make the output go to max. Another problem is small electrolytic caps in the voltage control circuit going bad. Often, blindly shotgunning all the small caps will make things work for another 15 years (sorry Tony...). The Boat Anchor Manual Archive <http://bama.sbc.edu/hp.htm> has a copy of the 6285A which should be close to what you have. Good luck. CRC

20 years, 7 months

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RK07 questions

by henk.gooijen＠oce.com

Tony wrote: > ... the latter means it's starting the brush cycle (where it > sweeps the platter with the brushes driven by that little > synchronous motor at the rear right of the pack, if you've > not been sensible enough to remove the brushes). :-) The brushes themselves are indeed removed from the arms, but I left the motor/arms assembly to keep the original state. > Exactly what it should be doing. Thanks! Good to hear. > Are you sure about that? You can't recover a bulk-erased pack > because you can't rebuild the servo surface, but this drive > has a separate servo surface so there's no good reason why > you couldn't reformat the data surfaces. > I've not tried it, though. True, just like the RL01/RL02 there is a separate servo track on the platters of the RK06/RK07. Indeed, I did try the .FORMAT command, but RT11 reported that the command was not available for the device, or something like that. ".INIT" gave me an error like the ".DIR" command. You are correct that you can format the RK07! It does not write the servo tracks ("impossible"), but it does write the data *and* the headers. However, that format command is not in RT11, but it is in XXDP. Edward tried his RK07 last evening, and after he loaded a pack (no controller connected at all), he saw the same events (LEDs and head movement), but on his drive the READY lamp illuminated. I have the field maintenance print set ... > It's been several years since I fiddled with one of thsese > (too many machines, too little time...) but something in the > back of my mind says that one of the lamps comes on when the > controller accesses the drive for the first time. It may just > be the lamp in the 'A' button. Correct. As Edward saw, the READY lamp must go ON when the heads are on track 0. I have read in the RK611 controller manual (damn, I can't find that one now!) that the "A" or "B" indicator is lit when the controller attached to the channel does an access. Time to test the drive without any cabling (to copy the exact condition that Edward has), and check the cables to the controller. Then try to run some of the RK611/RK07 XXDP programs! Perhaps they can tell something before I grab the DVM and scope ... thanks, - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

2
1
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AC power on front panels

by rigdonj＠cfl.rr.com

At 09:29 AM 1/17/06 +0100, you wrote: >Thanks for that remark, Pete! >I did not want to go into "pedantic" mode, but I was indeed >thinking about the capacitors in the EMI filter, but thought >that chances are very slim that they fail. That hasn't been my experience. I've had EMI filters fail in two HP 1000s, my BBC Acorn and a couple of other vintage computers. I also live in the lightning capital of the world (central Florida) and lightning doesn't care if it's turned off or not so I unplug everything when I've not using it. Joe

20 years, 7 months

1
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Zemco CompuCruise

by lwbender＠shaw.ca

I am trying to find parts for the older CompuCruise controls. Can you help me. Warren Bender Leduc Alberta Canada lwbender at shaw.ca

20 years, 7 months

2
1
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IBM 2520 card read punch available

by brian＠quarterbyte.com

Hi, Anyone interested in an IBM 2520 card read/punch? This one is not in great shape -- missing a couple of SLT cards, buttons, and the card weight. But it's nice and heavy -- probably 600-800#. This model has a channel interface built in. Have not been able to locate schematics/maintenance docs. Location is Oakland, CA. Can be palletized if you want to have it shipped. If interested let me know ASAP, else I'll have to yank what parts I can and then send it off to the glue factory. Brian =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _| _| _| Brian Knittel _| _| _| Quarterbyte Systems, Inc. _| _| _| Tel: 1-510-559-7930 _| _| _| Fax: 1-510-525-6889 _| _| _| Email: brian at quarterbyte.com _| _| _| http://www.quarterbyte.com

20 years, 7 months

1
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Message from Forrest Mims

by rcini＠optonline.net

All: I received an interesting message from Forrest Mims today so I thought I'd pass it on: Rich From: FMims@ To: rcini@ CC: forrest.mims@ Subject: Forrest Mims to Rich's classic computing lab Date: Tue, 17 Jan 2006 11:12:28 EST Dear Rich, Great web site. Glad to see what you are doing. Regarding the date MITS was founded, our first meeting was in Ed Robert's kitchen at 4809 Palo Duro, NE, in Albuquerque shortly after my first article on a model rocket light flasher was published in the September 1969 issue of MODEL ROCKETRY. Our first product was the TLF-1 model rocket light flasher, which was based on my design. We incorporated in January 1970, each of us providing a $100 check for startup funds. My check was written in the lawyer's office. It is dated "16 Jan 1970." Ed may have said we began in 1968 because he had founded Reliance Engineering earlier. We had been talking about starting a company in 1968, also, but did not have a reasonable product idea until my 1969 light flasher. I'm sending these details because of the interest in the history of MITS and a forthcoming museum exhibit in Albuquerque that will cover the history of the PC. Please feel free to use any of this if you like. And best wishes for your web site. Best regards, Forrest Forrest M. Mims III www.forrestmims.org <http://www.forrestmims.org/> www.sunandsky.org

20 years, 7 months

2
1
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Recent history: Apple/Sun merger

by news＠computercollector.com

http://www.theregister.com/2006/01/12/sun_apple_snapple/ "Sun Microsystems tried to acquire Apple once and then almost merged with Apple on two other occasions, according to Sun co-founder Bill Joy." ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Computer Collector Newsletter: >> http://news.computercollector.com Mid-Atlantic Retro Computing Hobbyists & Museum: >> http://www.marchclub.org >> http://groups.yahoo.com/group/midatlanticretro/

20 years, 7 months

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