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

by edick＠idcomm.com

I've been sifting through the "heap" some more and find I have a couple of the TI calculators, a '58 and a '59 and a Printer for these two. Does this sort of thing interest anyone? I bought these when they were the best TI had to offer, but don't use them much because there's only one functional (sort-of) battery pack between them. If you're willing to spring in advance for shipping and maybe some packaging material, they're yours. Dick

27 years, 1 month

1
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Commodore wrist watches

by ds_spenc＠alcor.concordia.ca

I just found this in newsgroup comp.sys.amiga.misc. Respond to the original sender, not to me. ----------------------------------------------------------------------- Subject : Commodore wrist watches Date : Sun, 09 May 1999 21:40:45 -0400 From: Stephanie Chorny <chorny(a)ilap.com> The Toronto PET Users Group has the opportunity of acquiring a quantity of Commandeer wrist watches (circa 1980 I believe)- these are new in the original packaging. TPUG wishes to make these historic items available to the Commodore community at a reasonable price (and hopefully not at a loss!). The purchase price has not yet been determined and the purpose of this communication is to find out: a) is there an interest on your part in obtaining this watch? b) approximately - what is the going price OR what would you pay for a 'mint' Commodore wristwatch? If you could provide a response to these questions, TPUG will be able to see if it will be financially feasible to proceed with this acquisition. I hope many of you will be able to help TPUG in this decision making process. Please reply in this newsgroup or directly to me at chorny(a)ilap.com. Thanks, Ernie Chorny, TPUG Board of Directors ----------------------------------------------------------------------- -- Doug Spence ds_spenc(a)alcor.concordia.ca http://alcor.concordia.ca/~ds_spenc/

27 years, 1 month

1
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manuals available

by Jgzabol＠aol.com

Hi Lawrence, I would like to have one of the CDC Sabre disk drive manuals. My Bull (Honeywell) machine has some of these, I believe, or at least rather similar drives. I could either pick it up mid-June, or else if you would send it my address is John G. Zabolitzky Muxelst. 4 81479 Munich Germany Of course I am happy to pick up any cost and effort involved! Regards John

27 years, 1 month

1
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Univac stuff available

by aknight＠mindspring.com

Hi, For those of ya'll out there into the really big iron, I have a few pieces of Univac stuff available: First is a complete Univac model 1710 key punch machine, including a manual with schematics etc. I do not know if it actually works, and would recommend it be checked out before powering up as it has several motors in it. This is way too large to ship, though, so if you're interested you would need to pick it up at my house in central NC. I can provide digital images of the unit upon request. Second is a Sperry Univac punched card reader. This is a desktop-unit, (20"x15"x12") so should be UPS shippable. I don't have any docs. on it. or any cabling (it has a "big green connector" on the back). I've taken digital images already and can provide them upon request. Third is a Sperry Univac CRT terminal, if there's any interest in something like this let me know and I'll get more info. on it. Fourth is a keyboard from a Univac key punch machine (probably either a 1610 or 1710). I didn't "trophy" this myself (as per earlier discussion), the rest of the machine was already gone. Still, it may be an interesting relic for those of you who are interested in 1960's computer stuff. Those of you who've seen my previous postings know I'm primarily interested in very early electronic calculator and certain early microcomputer stuff. I have a "want" list on my web page, and would consider trades for some of the items on my list. Recognizing that not everybody has a stash of old calculators, I'd consider monetary offers as well, but, please, >from the U.S. only. Thanks, Alex Knight Calculator History & Technology Archive Web Page http://aknight.home.mindspring.com/calc.htm

27 years, 1 month

1
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Mystery board and drives

by pete＠dunnington.u-net.com

On May 9, 16:40, Stan Pietkiewicz wrote: > They are indeed 2 * 50 pin headers, with a 4 position switch between them... > Another reply suggests it would be Unibus... When I have time, I'll dig out my TC02 manual -- I guess the switches will be similar. I'm still of the opnion this TU03 is Q-bus. Does it have an empty DIL socket near one of the edge connectors? Does it have a couple of other switch packs? (I'm wondering how much like my TC02 it is.) > I'm not planning on plugging it into my MicroVAX 3600 until I know for sure.... Probably wise :-) > > 975002 looks like an IPI or SMD drive number, but it doesn't quite match > > any in my lists. Are there any other numbers? What kind of connectors are > > on it? > > The interface connectors are a 50 pin ribbon connector. Other numbers... none > that I found... > Another message suggests that they are IPI-2... Sorry, I can't be any more help with these. -- Pete Peter Turnbull Dept. of Computer Science University of York

27 years, 1 month

1
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Mystery board and drives

by pete＠dunnington.u-net.com

On May 8, 23:41, Stan Pietkiewicz wrote: > Subject: Mystery board and drives > In my scrounging trips, I've managed to pick up the following mysteries: > > 1) A quad-height Qbus?? (Unibus?) Emulex TU03. I first thought this > might be a SCSI controller, but a closer look indicates that it probably > isn't. This board is populated with mostly 14 and 16 pin DIPs, a couple > PALs, 40 pin DIPs, and 28 pin PROMs. My next guess would be a tape > drive interface..... Almost certainly Q-bus, since it's quad-height (all the Unibus Emulex controllers I've seen are hex), and T means Tape. I'd guess it's a TU10 emulator or similar. What are the connectors like? If it has 2 x 50-way headers, it'll be a Pertec interface. BTW, was somebody looking for the Pertec interface pinouts a few days ago? I found the ASCII and PostScript files if anyone needs them... > 2) A couple of Seagate hard drives, complete with a power supply on a > mounting channel. These are labelled: Equipment No.: PA4B2A, and on the > drive itself: 975002-001. What are these?? I'm pretty sure there not > SCSI, but other than that, I'm puzzled.... 975002 looks like an IPI or SMD drive number, but it doesn't quite match any in my lists. Are there any other numbers? What kind of connectors are on it? -- Pete Peter Turnbull Dept. of Computer Science University of York

27 years, 1 month

2
1
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Mystery board and drives

by jeff.kaneko＠juno.com

On Sat, 08 May 1999 23:41:42 -0400 Stan Pietkiewicz <stanp(a)storm.ca> writes: >2) A couple of Seagate hard drives, complete with a power supply on a >mounting channel. These are labelled: Equipment No.: PA4B2A, and on >the >drive itself: 975002-001. What are these?? I'm pretty sure there not >SCSI, but other than that, I'm puzzled.... What size are they? Are they 8" or 5.25? If it is 5.25" (likely) then it looks like it is an "Elite" class IPI-2 or SMD drive (unclear). One reference says IPI, another implies SMD. The nearest equipment # match is for PA4B/F, and this is an IPI-2, 1.2 gig drive. (ST-41201K). Hopefully, someone will have more accurate info. > >Stan > > ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

27 years, 1 month

2
1
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Teac FD-55GFR 5.25" floppy drive

by mark_k＠iname.com

Hi, On Fri, 7 May 1999 Tony Duell wrote: > Take off the spring. I believe that you can normally take the collet > apart further, but this isn't in the manual. Apply a smear of grease > (either plastic grease or vaseline) to the spindle and reassemble. Put > the spring on with the smaller end against the collet. Tried doing that, and it didn't help. It turns out that the C-clip was vibrating, causing the noise; I should probably have figured that out sooner. Putting some grease in the groove that the clip fits into solved the problem. I guess using a hot-melt glue gun would do the job too. (Maybe this info will be of use to someone in future?) -- Mark

27 years, 1 month

2
1
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PDT-11/150

by allisonp＠world.std.com

<The floppy disks are 8" RX01 compatible drives. The interesting thing is <that this device can format the disks, not by some special format command <procedure... it formats a sector when it writes it... It happens to use a 1773 floppy controller that can format, there is also local ram and an 8085 micro to make the disk appear smarter. <The on-board ROMs know about RT-11 Queue elements, so the RT driver <simply calls the ROM to handle the I/O, and the ROM returns if there <was an error, or when the request is complete. Between the Disk system with it's 8085 and the DL compatable IO that also has its own 8085 Plus either 3 ot 6 2651 usarts) it's easy to see how the system is smarter in some places. for a small system that makes it unique for it's time. The same basic bard set was used in the PDT-11/110(MOP loaded) and 11/130 (TU58 tape) the main difference was the use of TU58 (unique with a parallel interface) and some minor rom level code to boot it. <I don't know of anything else which ever ran on it... (I would be <interested to know if there ever was). I head someone had COS running in it. In theory is a vanilla 11/2 with 28KW of ram and a series of DL ports and a mass storage device that is sorta RX01(two 256k floppies RX01 format). Unless you used DDCMP to another system storage would be the limiting aspect. NOTE: expansion is not possible, there is no externally acccessable bus or expansion port. I have the PDT11/130 version and several boards for PDt150/130 as spares. Allison

27 years, 1 month

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PDT-11/150

by allisonp＠world.std.com

<OK, I just picked up a PDT-11/150 today for $5 at a local junk store. I <know that it is some sort of PDP-11, but that is about the extent of my <knowledge. Main thing I'm wondering at the moment is what was its intende <use? It's a PDP-11 of the LSI-11 base chipset(no fis but it can be hacked in). <Also what OS's run on it? I would guess RT-11 will run on it, but not muc <else. Rt11 most versions. Don't know if there wer others. The disk system I think is the only RX01 compatable DEC did that could actually format a blank disk. Allison

27 years, 1 month

1
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Apple Mouse

by owad＠caesarville.net

>Speaking of which, does >anyone here know of a program called Catalyst, designed to imitate a mac >on a //c? I've heard of it (in fact, I think I own a copy). Isn't Catalyst just a program launcher? Tom Owad

27 years, 1 month

3
2
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PDT-11/150

by healyzh＠aracnet.com

OK, I just picked up a PDT-11/150 today for $5 at a local junk store. I know that it is some sort of PDP-11, but that is about the extent of my knowledge. Main thing I'm wondering at the moment is what was its intended use? Also what OS's run on it? I would guess RT-11 will run on it, but not much else. Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

27 years, 1 month

2
1
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PDT-11/150

by CLASSICCMP＠trailing-edge.com

>>Also what OS's run on it? I would guess RT-11 will run on it, but not much >>else. >I don't know of anything else which ever ran on it... (I would be >interested to know if there ever was). There is support for running tasks on PDT's via RSX-11S. While that's an operating system, it *isn't* a development environment :-). Tim.

27 years, 1 month

1
0
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Mystery board and drives

by CLASSICCMP＠trailing-edge.com

>1) A quad-height Qbus?? (Unibus?) Emulex TU03. I first thought this >might be a SCSI controller, but a closer look indicates that it probably >isn't. This board is populated with mostly 14 and 16 pin DIPs, a couple >PALs, 40 pin DIPs, and 28 pin PROMs. My next guess would be a tape >drive interface..... This is a TC13. A Unibus Pertec-Formatted tape controller, emulating TS11/TU80. >2) A couple of Seagate hard drives, complete with a power supply on a >mounting channel. These are labelled: Equipment No.: PA4B2A, and on the >drive itself: 975002-001. What are these?? I'm pretty sure there not >SCSI, but other than that, I'm puzzled.... What sort of connector? If a 60-pin and a 26-pin, then they're SMD. The "9750" part of the part number sounds like a CDC part number - Seagate bought out CDC's disk drive business many years ago. Tim.

27 years, 1 month

1
0
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Mystery board and drives

by stanp＠storm.ca

In my scrounging trips, I've managed to pick up the following mysteries: 1) A quad-height Qbus?? (Unibus?) Emulex TU03. I first thought this might be a SCSI controller, but a closer look indicates that it probably isn't. This board is populated with mostly 14 and 16 pin DIPs, a couple PALs, 40 pin DIPs, and 28 pin PROMs. My next guess would be a tape drive interface..... 2) A couple of Seagate hard drives, complete with a power supply on a mounting channel. These are labelled: Equipment No.: PA4B2A, and on the drive itself: 975002-001. What are these?? I'm pretty sure there not SCSI, but other than that, I'm puzzled.... Stan

27 years, 1 month

1
0
0 0

PDT-11/150

by mbg＠world.std.com

>OK, I just picked up a PDT-11/150 today for $5 at a local junk store. I >know that it is some sort of PDP-11, but that is about the extent of my >knowledge. Main thing I'm wondering at the moment is what was its intended >use? It is a PDP-11, using the LSI-11/2 (and 11/03) chip set. It can have up to 60kb of user-available memory, a console line (programmed like a DL), 3 other serial lines, an asynch/sync line and a printer port. The floppy disks are 8" RX01 compatible drives. The interesting thing is that this device can format the disks, not by some special format command procedure... it formats a sector when it writes it... The on-board ROMs know about RT-11 Queue elements, so the RT driver simply calls the ROM to handle the I/O, and the ROM returns if there was an error, or when the request is complete. >Also what OS's run on it? I would guess RT-11 will run on it, but not much >else. I don't know of anything else which ever ran on it... (I would be interested to know if there ever was). When you put in a PDT-bootable diskette, you type '@@' (two at-signs) at the console terminal to cause it to boot. I have heard from some that a version with EIS/FIS is called a Mini-Minc... I have several PDTs that I have upgraded myself. Otheriwse, if you locate a EIS/FIS emulator written years ago by Ian Hammond, you can get EIS/FIS programs to run on it. Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 1 month

1
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info wanted: Motorola "Educational Computer"

by rigdonj＠intellistar.net

Hi again, More of yesterdays finds. Picked up a pile of AIM 65 computers with the keyboards and power supplies all mounted on sheets of plywood. I found one Motorola "Educational Computer" in the pile. It says "Copywrite 1981 by Motorola, Inc." on it and has a 68000L8 CPU. Unlike the AIMs, it does not have a display or keyboard. How did you interface to one of these? Does anyone have the pinouts and/or the instructions for this? Joe

27 years, 1 month

3
3
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MINC-11 Bits

by jeff.kaneko＠juno.com

ARe MINC-11 parts scarce? Anybody out there with one of these? Also: Whazza 'FSD' disk drive? Jeff ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

27 years, 1 month

3
2
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info wanted: Motorola "Educational Computer"

by jeff.kaneko＠juno.com

Naw, no docs, just the thing. :^P On Sat, 08 May 1999 15:48:07 Joe <rigdonj(a)intellistar.net> writes: >Kewl! Did you get any manuals or pinouts for it? > > > Joe > >At 02:11 PM 5/8/99 -0500, you wrote: >>Yeah, There's one just like it living in the 68000 trainer >>I got from wirehead last fall. Too kewl. >> >>On Sat, 08 May 1999 12:48:10 Joe <rigdonj(a)intellistar.net> writes: >>>At 06:01 PM 5/8/99 +1, Derek wrote: >>> >>>>Motorola used this term for several 68K and 68xx SBC systems. >>>>A good information is at >>>>http://people.delphi.com/paulrsm/68k/mecb/mecb.htm >>> >>> Bingo! That's it. The picture matches it exactly. Thanks for the > >>>URLs. >>> >>> Joe >>> >> >>___________________________________________________________________ >>You don't need to buy Internet access to use free Internet e-mail. >>Get completely free e-mail from Juno at >http://www.juno.com/getjuno.html >>or call Juno at (800) 654-JUNO [654-5866] >> > ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

27 years, 1 month

1
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archaic device - anyone have doc's???

by edick＠idcomm.com

sorry about the mistitled post sent earlier . . . Dick -----Original Message----- From: Richard Erlacher <edick(a)idcomm.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Saturday, May 08, 1999 3:57 PM Subject: Re: manuals available >I've run into Intersil's ICM7228 once again and find my data book doesn't >cover that number. It's date coded '87, so It's probably in the last book I >got from Intersil before they were acquired by GE. > >Has anyone got a complete sheet on this part? I believe it is a >multi-decade counter/display driver, or maybe just a display driver. > >thanx > >Dick >

27 years, 1 month

2
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info wanted: Motorola "Educational Computer"

by jeff.kaneko＠juno.com

Yeah, There's one just like it living in the 68000 trainer I got from wirehead last fall. Too kewl. On Sat, 08 May 1999 12:48:10 Joe <rigdonj(a)intellistar.net> writes: >At 06:01 PM 5/8/99 +1, Derek wrote: > >>Motorola used this term for several 68K and 68xx SBC systems. >>A good information is at >>http://people.delphi.com/paulrsm/68k/mecb/mecb.htm > > Bingo! That's it. The picture matches it exactly. Thanks for the >URLs. > > Joe > ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

27 years, 1 month

2
1
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manuals available

by lemay＠cs.umn.edu

I have some old hard drive manuals available, if anyone wants them. Otherwise they will probably be thrown away. Ciprico Rimfire manuals for the 3200 series. Control Data CDC EMD/SABRE eight-inch module drive PA8xx Fujitsu M2351A/AF mini-disk drive Multiple copies are available for everything except the Fujitsu manual. -Lawrence LeMay lemay(a)cs.umn.edu

27 years, 1 month

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info wanted: Motorola "Educational Computer"

by emu＠ecubics.com

Hi, -----Original Message----- From: Hans Franke <Hans.Franke(a)mch20.sbs.de> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Saturday, May 08, 1999 10:03 AM Subject: Re: info wanted: Motorola "Educational Computer" >(BTW: >http://people.delphi.com/paulrsm/68k/68k.htm >is a usefull source for 'old' 68K systems, including >an complete HTML Version of the DTACK GROUNDED newsletter >from 7/81 until 9/83 (excerpt from the first issue: >"...Accordingly, there are a lot of companies who are >planning to drive the PDP 11/70 out of the marketplace >with $10,000 (base price) 68000 systems. It is rumored >that Apple is one of these companies, ..." sometimes >realy nice if you look into past rumors ... - I hope >he will convert the other isues) Talking about getting the pdp11 out of the marketplace, Anybody know the cadmus systems ? I would love to have one of these. (where Motorola CPU's on qbus) cheers, emanuel

27 years, 1 month

2
1
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Compupro computer questions

by allisonp＠world.std.com

I have one of these, a working (tried it, worked) and reassembled it as Compupro CPU-Z. No interest here in programming 8088. < I picked up a Compupro 816 computer yesterday and an external drive unit <with a hard drive and an 8" floppy drive. I haven't brought it home yet so Ok, It's an S100 crate so the box and it's contents can be very out of sync. If it has the 816 card that means 8085 and 8088 cpus on one card and it ran CPM-80, CPM-86, CDOS, CCPM and even MSDOS(odd io compared to PC)! <I haven't taken more than a quick look at it. Can anyone tell be about the <computer and drive? What CPU, speed, etc. What kind of operating system i There were several variation of the cpu speed but the slowest was 8mhz on the 8088 and the fastest was 10mhz. The 8085 runs ar 5/6mhz. minimum configuration was: CPU 816 interfacer 4 Disk 1 (or 1A) 128k static ram 8" dual drive DSDD versions included: 512k M-drive (ram disk 512k) SYSTEM SUPPORT (TOY clock, interrupt controllers) Hard disks The drive used a DISK1 floppy that was a DMA device using 765 controller. Hard disks would have either been DISK2 (8" drives) or DISK3 (5.25 drives). <uses, etc. I don't see a keyboard or video connectors so I assume it needs <a terminal to talk to it. Does any have a pinout of the serial port so I The idea of monitor and keyboard is a PCism. <the floppy drive use hard sectored disks, etc etc, etc. I noticed that <there are connectors for both a 5.25" and an 8" floppy drives and another Yes that controller will do all sizes (can easily be hacked for 3.5"!) but it's likely that it was used with 8" DSDD or 5.25 48tpi DSDD. <for a hard drive on the back of the CPU box. Does anyone have a manual or <the OS software for one of these? I have both but, I'm time cramped for copying (can't do that volume at work). Herb Johnson can help here to. Allison

27 years, 1 month

1
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Seeking: Digi-Comp 1 Advnaced Programming Manual

by jimw＠agora.rdrop.com

...or whatever it was called! The extra book of programming expirements (games?) for the Digi-Comp 1. Either hard-copy or electronic would be fine. Thanks! -jim --- jimw(a)computergarage.org The Computer Garage - http://www.computergarage.org Computer Garage Fax - (503) 646-0174

27 years, 1 month

1
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Compupro computer questions

by rigdonj＠intellistar.net

Hi all, I picked up a Compupro 816 computer yesterday and an external drive unit with a hard drive and an 8" floppy drive. I haven't brought it home yet so I haven't taken more than a quick look at it. Can anyone tell be about the computer and drive? What CPU, speed, etc. What kind of operating system it uses, etc. I don't see a keyboard or video connectors so I assume it needs a terminal to talk to it. Does any have a pinout of the serial port so I can make a terminal cable. What size is the hard and floppy drives, does the floppy drive use hard sectored disks, etc etc, etc. I noticed that there are connectors for both a 5.25" and an 8" floppy drives and another for a hard drive on the back of the CPU box. Does anyone have a manual or the OS software for one of these? Joe

27 years, 1 month

1
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Breathing new life in laptop batteries

by allisonp＠world.std.com

<The first thing to try is to charge a large electrolytic capacitor <(say 10000-100000 uF) to about 20V. Now discharge it through the faulty <cell. If you are lucky, the cell voltage will rise, at which point charge <the cell as above. This is the beast bet as cells fail with internal shorts and the cap will dump enough energy to open them without cooking the cell. <What you do is use a current limited PSU of about 10V and 8A. 'Blip' it <across the cell for a fraction of a second - just tap the wires on. This is ok if the cell is hard starting, I don't recommend it. The better approach is the LARGE cap charged to 12-20V and follow with 1/4 the cell capacity for a few minutes (NOT LONGER). <I have seen one article which suggests doing the same thing with a car <battery as the power supply. DON'T!!! . The current is far too high, and <the NiCd is likely to explode. Extremely dangerous. <manufacturers used standard-sized cells, so it is possible to rebuild old <battery packs. Often far cheaper than a new one. Allison

27 years, 1 month

5
6
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Breathing new life in laptop batteries

by allisonp＠world.std.com

<been watching when recharging a cell treated with the capacitor zap method <and seeing it's voltage go from about 1.3 Volts back to zero again, <sometimes with a faint ping if about completely recharged. Other cells <become leaky electrically so they can be charged, but self discharge in a they are all bad and really the trick is temporary. I have tried this and sometimes it works for packs that have sat too much unused. First get the cells to take a charge, then discharge at .2 to .6 capacity and then recharge. The trick is to stop the discharge before any cell falls below 1.1v. Some packs after a few cycles start to work normally again. Then again tabbed cells for replacement use run from ~$1.50 to $4 depending on size (not at radio shack, they charge 3x that!). So replacing the cells (as a set) is the best bet. My PX-8 uses 4 1.2ah sub C cells that I can get for under 10$ total and the internal 4 cell 110ma sub AA the whole pack for usually under 5$. Allison

27 years, 1 month

2
1
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FT: DEC Option Module Guide 1991

by cmcmanis＠mcmanis.com

Howdy, I've got a DEC Option Module Guide (~1500 pages, 1991 vintage) that I'm willing to trade for a set of three PDP-11 boards (2 x M8044-Dx, 1 x RKV21) these are two 32KW memory cards and an RX02 interface card. Email me off list if you're interested. --Chuck

27 years, 1 month

2
1
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NEC PC-8001 Expansion Chassis pictures

by fauradon＠mn.mediaone.net

Hi, I used to have a camera like that and the trick I used for highly reflactive objects that still needed extra lighting was to tape a piece of velum papre in front of the flash to diffuse and soften the light. Francois >The second picture shows the inside of the I/O expansion chassis (sorry >about the glare...this stupid camera doesn't have an option to turn off >the flash correctly, or stupid me forgot how to do it right).

27 years, 1 month

1
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Breathing new life in laptop batteries

by roblwill＠usaor.net

The method that I use to open up old NiCd's is with an old knife and a propane torch. The knife is an old snap-off utility knife (with a metal insert in the plastic handle). I turn on the torch, open the knife as far as it'll go (about 2 1/2"), and heat it over the torch until it is red hot. I then melt through the seam of the battery pack (or the middle, if I can't find a seam). To fasten the pack back together, I just use a soldering iron and "spot weld" it back together at the corners. This makes it easier to take apart the next time the cells need replaced. -- -Jason Willgruber (roblwill(a)usaor.net) ICQ#: 1730318 <http://members.tripod.com/general_1> -----Original Message----- From: Francois <fauradon(a)mn.mediaone.net> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, May 07, 1999 9:26 PM Subject: Re: Breathing new life in laptop batteries >Hi, >Thanks for all the info. Apparently there are no reliable way to bring their >youth back, I would like to have a reliable laptop with a battery that last >more than 30 min. I found a Zenith z-star 433 VLp (500 Mb hd, 12 M RAM and >color display and the Zenith J-Mouse!!!) that I'd like to use while away >from home. The batery I got seem to work for a while. Also it has four >contacts does this means that it provide mutiple voltages or is there some >kind of charge sense signal? I haven't brought the battery to the bench yet >(no room on or near the bench:). >Also the pack seems to be sealed pretty good, any elegant way to open it up >and reclose it without too much damage? >Thanks >Francois > >PS: I actually got 3 of these laptops and built two from the set of parts >and two of the batteries are totally shot: they get very hot when I try to >charge them and of course no juice is coming out. I can practice on one of >the dead ones. > >>> >This is the beast bet as cells fail with internal shorts and the cap >will >>> >dump enough energy to open them without cooking the cell. >>> > >>> Yes, but many times in my experience another short appears shortly. I >have >> >>Unfortunately, that's right :-( I would never depend on a cell that I'd >>repaired by this method. > > >

27 years, 1 month

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WD Chipset info (Was: Listserve Traffic)

by edick＠idcomm.com

I've been saving a couple of the 1050 chips, in that ultra-rare JECED 'C' package for use as high-tech cuff-links to go with my i8008 tie-tack. I surely liked that package better than the stupid, Stupid, STUPID one they used for a number of 68-pin wonders including the 8018x and 80286. Of course I could use a more up-to-date part, but why . . . Dick -----Original Message----- From: Tony Duell <ard(a)p850ug1.demon.co.uk> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, May 07, 1999 4:36 PM Subject: Re: WD Chipset info (Was: Listserve Traffic) >> <snip> > >And others, like the 1050 SMD controller chip. > >-tony >

27 years, 1 month

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NEC PC-8001 Expansion Chassis pictures

by dastar＠ncal.verio.com

I took two digital photos of my NEC PC-8001 expansion chassis. My previous description of the unit was incorrect. The disk drives are housed in a totally separate chassis. The actual expansion chassis contains a slotted backplane so that expansion cards may be added to the PC-8001. The first picture shows the dual disk drive cabinet atop the 8012A I/O Unit. http://www.siconic.com/crap/8001exp1.jpg The second picture shows the inside of the I/O expansion chassis (sorry about the glare...this stupid camera doesn't have an option to turn off the flash correctly, or stupid me forgot how to do it right). You can see a RAM card plugged into the lower slot. http://www.siconic.com/crap/8001exp2.jpg The I/O unit has an external connector that the PC-8001 plugs into. It has a second connector that plugs into the disk drive unit. Sellam Alternate e-mail: dastar(a)siconic.com ------------------------------------------------------------------------------ Don't rub the lamp if you don't want the genie to come out. Coming this October 2-3: Vintage Computer Festival 3.0! See http://www.vintage.org/vcf for details! [Last web site update: 04/03/99]

27 years, 1 month

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Listserve Traffic

by jeff.kaneko＠juno.com

Guys: Is it just my imagination, or has traffic on this Mailing List gone like, *way* down? I used to get upwards of 60+ messages a day, now I'm only getting less than half that. ???? Jeff ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

27 years, 1 month

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WD Chipset info (Was: Listserve Traffic)

by edick＠idcomm.com

A couple of things . . . first of all, the WD1100 came well before the 1010 which preceded the 2010 by about a year. All the information you need about either of these chips is contained in the datasheet/appnote set published by WD for their WD100x-0x series of controllers. Careful, now, because the earlier controllers were different, i.e. the WD1000-55 came before the WD1000-05. The '-55 was the one with the WD 5-chip chipset with various designations, but accompanied by the 8X300 microcontroller. There's a 1010 on nearly every one of the early PC/XT and PC/AT controllers. The designation for one of the PC/XT controllers which was quite well documented, was WD1002-WX2. There's nothing mysterious about these controllers. They are dirt simple to program, to wit, I programmed the things myself instead of having someone else do it. The device has a "register file" which you must completely rewrite each time you issue a command and it has a buffer which you must fill before writing and empty after reading data and before checking status. The board has its own counters which trigger the operation in question once you've performed the requisite number of reads and writes. The 1015, by the way, is an 8041 (2) with Western's code in it. I have several different versions of this chip's application chipset, so it's not easy to see what's what. One thing's for sure, though, and that's that the 1010 definitely replaced the 5-chip set used on the 8X300-based controllers. The 2010 is an enhanced, error-correction-support-capable version of the 1010. It works more or less the same in other respects, but has a longer correction code which makes it capable of more than just complaining there's been an error. I'll look around to see if I have anything beyond an old data book from Western. I once kept all these devices' data sheets as though my life depended on it, which it once did, more or less, . . . at least my diet . . . , so I may actually still have them. Western abruptly quit sending out data on the chips when they went from supplier to competitor for those of us in the controller business. That was, I believe, in about 1984. Dick -----Original Message----- From: Jeffrey l Kaneko <jeff.kaneko(a)juno.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, May 07, 1999 10:26 AM Subject: WD Chipset info (Was: Listserve Traffic) >Guys: > >Well, actually, my concern was that maybe I'm not getting all of >my mail (either that, of I've pissed off alot of people, and don't >know why). > >Anyways, does anybody out there have a 'long form' spec/application >sheet for the WD-2010 or the WD-1010 HDC chip? There is a 'short' >(read: Incomplete) sheet in the old 1983 catalog, but it is missing >some information. > >ALso, if someone has info on HDC devices made by WD after 1983 >(the WD-1100 comes to mind, for example), that would be appreciated >also. Let me know what you got, and I will be happy to pay for >postage & duplication (your $6.50 is in the mail Joe! :^) ). > >WD devices are as common as fleas on a dog, but docs seem to be >rather scarce. > >Thanks! > > >Jeff > > >On Fri, 7 May 1999 15:05:58 +0100 Philip.Belben(a)pgen.com writes: >> >> >> > Is it just my imagination, or has traffic on this Mailing >> > List gone like, *way* down? I used to get upwards of 60+ >> > messages a day, now I'm only getting less than half that. >> >> >> If you want more messages, here's another :-) >> >> In fact, I am still getting around 60 messages a day from Classiccmp >> at the >> moment, but this is a lot easier to cope with than the 100+ we had a >> week or two >> ago. Especially since my boss doesn't like me reading them in work >> time (he's >> off with a bad back today...) >> >> Philip. >> >> >> >> >> > >___________________________________________________________________ >You don't need to buy Internet access to use free Internet e-mail. >Get completely free e-mail from Juno at http://www.juno.com/getjuno.html >or call Juno at (800) 654-JUNO [654-5866]

27 years, 1 month

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Web auctions, etc.

by sring＠uslink.net

I would appreciate knowing of a few auction and classified ad sites where I can pick up stuff for my Atari's, Commodores, etc. You are really a helpful group of people. Maybe my little puters will stay alive afterall. Thanks! Stephanie sring(a)uslink.net

27 years, 1 month

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Bootable floppy?

by CLASSICCMP＠trailing-edge.com

>Is it possible to make a bootable floppy for a VAXStation 2000 or is the >system too large for the disk? A VMS installation is way too large for a single floppy, of course. I think a VMS distribution or backup onto floppies is about as cruel as the Wagner ring cycle on 45's! But if you're into self-abuse and huge piles of floppy disks, it is possible. >If it is possible, what is the procedure? It is possible, of course. Boot VMS, log in as the system manager, and do a @SYS$UPDATE:STABACKIT to build the standalone backup tool on floppies. You can then do a backup of the system disk onto floppies (preferably using the STABACKIT kit you just generated to test your copy of standalone backup). But if at all possible, get a tape drive! -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

27 years, 1 month

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WD Chipset info (Was: Listserve Traffic)

by jeff.kaneko＠juno.com

Guys: Well, actually, my concern was that maybe I'm not getting all of my mail (either that, of I've pissed off alot of people, and don't know why). Anyways, does anybody out there have a 'long form' spec/application sheet for the WD-2010 or the WD-1010 HDC chip? There is a 'short' (read: Incomplete) sheet in the old 1983 catalog, but it is missing some information. ALso, if someone has info on HDC devices made by WD after 1983 (the WD-1100 comes to mind, for example), that would be appreciated also. Let me know what you got, and I will be happy to pay for postage & duplication (your $6.50 is in the mail Joe! :^) ). WD devices are as common as fleas on a dog, but docs seem to be rather scarce. Thanks! Jeff On Fri, 7 May 1999 15:05:58 +0100 Philip.Belben(a)pgen.com writes: > > > > Is it just my imagination, or has traffic on this Mailing > > List gone like, *way* down? I used to get upwards of 60+ > > messages a day, now I'm only getting less than half that. > > > If you want more messages, here's another :-) > > In fact, I am still getting around 60 messages a day from Classiccmp > at the > moment, but this is a lot easier to cope with than the 100+ we had a > week or two > ago. Especially since my boss doesn't like me reading them in work > time (he's > off with a bad back today...) > > Philip. > > > > > ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

27 years, 1 month

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Breathing new life in laptop batteries

by fauradon＠mn.mediaone.net

Hi all, I know we already had a discussion on that topic but I can't remember what was said since I was not too interested at the time. Some of you mentioned that it was possible to restore "dead" batteries from laptop. The ones in question are NiCads and very much dead as far as I can tell. Any info appreciated Thanks Francois --------------------------------- Note: New e-address: fauradon(a)mn.mediaone.net Visit the oh so neglected (but recently moved) sanctuary at: people.mn.mediaone.net/fauradon

27 years, 1 month

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Listserve Traffic

by Philip.Belben＠pgen.com

> Is it just my imagination, or has traffic on this Mailing > List gone like, *way* down? I used to get upwards of 60+ > messages a day, now I'm only getting less than half that. If you want more messages, here's another :-) In fact, I am still getting around 60 messages a day from Classiccmp at the moment, but this is a lot easier to cope with than the 100+ we had a week or two ago. Especially since my boss doesn't like me reading them in work time (he's off with a bad back today...) Philip.

27 years, 1 month

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HP700?

by jlwest＠tseinc.com

The HP 700 series were/are graphical workstations. They are virtually identical to the 800 series (the business servers) except they were repackaged for the workstation market. Unix (HP-UX) OS. PA-RISC cpu's. Parts of the 700 series might still be in production. Getting a power supply from a scrap/surplus dealer wouldn't be all that easy, but not impossible. You can probably still buy a power supply for it from HP. Jay West -----Original Message----- From: Bruce Lane <kyrrin(a)bluefeathertech.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, May 07, 1999 9:18 AM Subject: HP700? > I don't know how 'classic' this one is just yet, but... > > I came across a partly gutted HP700IL at my local used place yesterday. It >was missing its power supply, but still had the CPU card. I took a look, >and it looks like the heat sink was actually bolted to the CPU chip (a la >the DEC Alphas). > > Is the unit worth grabbing? It looked kind of slick. How hard would it be >to find a power module? > >Thanks... > > >-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >Bruce Lane, Owner and head honcho, Blue Feather Technologies >http://www.bluefeathertech.com >Amateur Radio:(WD6EOS) E-mail: kyrrin(a)bluefeathertech.com >SysOp: The Dragon's Cave (Fido 1:343/272, 253-639-9905) >"Our science can only describe an object, event, or living thing in our own >human terms. It cannot, in any way, define any of them..." >

27 years, 1 month

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Listserve Traffic

by emu＠ecubics.com

>Traue keinem Menschen der 5 Tage blutet und immer noch nicht tod ist. ???

27 years, 1 month

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core... more

by jdykstra＠nortelnetworks.com

On Thursday, May 06, 1999 9:43 PM, allisonp(a)world.std.com [SMTP:allisonp@world.std.com] wrote: > They are roughly 50mils x 11 mils x 15mils. Cross section of the > doughnut is rectangular at 15x11 mils. The reason for such rough > measurements is my vernier is only good to .001" and I'd need > somthing fancier to be more accurate. By eyeball the 8e cores are > smaller! According to Pugh's "IBM's 360 and Early 370 Computers", in 1963 IBM was manufacturing both 30x50 mil and 19x32 mil cores (inside diameter x outside diameter). Allison's measurements match up with the larger size. According to the book, the IBM 7080 and 7094 used the smaller size. Thus, these cores were probably intended for either the 1401, or the 7090 if any of these were still in production in 1963. Does anyone out there have a 1401, or a 1401 core stack? Something I hadn't read of before: the 7090's core planes were immersed in oil to help with heat dissipation. I wonder whether there was a sticker on the machine (right underneath "Trained Service Personel Only"): "Change oil every six months or 100,000 punched cards". Another interesting point: The defect ratio of cores that reached the plane wiring stage was 1 out of 8,000. This sounds incredibly high, but IBM's core manufacturing facilities were state of the art. Imagine the difference between the process control used then, and current integrated circuit fabrication techniques! > A simple core frame would be 8x8 (64 bits) and use a 4 wire system as > that simplifies the select, inhibit and sense hardware. I'd likely go > with late 70s level TTL and transistors to drive these and to sense the > outputs I don't know if I'll use transistors (1968 or earlier designs) > or > comparator chips (aka 1540, 710, 711) will be used. They would also be > consistant with 1970s technology. I'd very much like to see your schematics, once you're happy with them. Better late than never to learn about appropriate circuit designs. ---- John Dykstra jdykstra(a)nortelnetworks.com Principal Software Architect voice: ESN 454-1604 Enterprise Solutions fax: ESN 667-8549

27 years, 1 month

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HP700?

by kyrrin＠bluefeathertech.com

I don't know how 'classic' this one is just yet, but... I came across a partly gutted HP700IL at my local used place yesterday. It was missing its power supply, but still had the CPU card. I took a look, and it looks like the heat sink was actually bolted to the CPU chip (a la the DEC Alphas). Is the unit worth grabbing? It looked kind of slick. How hard would it be to find a power module? Thanks... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner and head honcho, Blue Feather Technologies http://www.bluefeathertech.com Amateur Radio:(WD6EOS) E-mail: kyrrin(a)bluefeathertech.com SysOp: The Dragon's Cave (Fido 1:343/272, 253-639-9905) "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."

27 years, 1 month

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PC in a box and Re: MacIntosh in a box question

by rigdonj＠intellistar.net

At 06:48 PM 5/6/99 -0500, you wrote: >Where are you located and how much are they? They're in Orlando Florida. He has six of them and I expect he'll take $100 each plus shipping. Call Don at (407) 260-9109. Don is the same guy that has the rack mount PCs. I've written up a bit about them and posted it at "www.intellistar.net/~rigdonj/don-ad.htm". That a look if you're interested. The boxs for the Apples are not the same as the one for the PCs. I expect he'll take $125 for one of them with a single CPU card (486-100), 4Mb Ram, a VGA video card, a 520 Mb hard drive and a floppy drive. He has a lot of neat data acquision and control cards for them and some of the cases have dual computers in them. BTW the Apples have a keylock on the front to turn them off and on with. Don doesn't have the keys. I popped the switch portion off of the lock on one of them and turned the switch shaft with a pair of pliars. If you got one, you can do the same or replace the lock/switch or have a key made. Joe > >George > >> I found some strange looking rack mount boxs in a salvage place today. >> They're marked AuudioVision 90. I opened one up and found that it has an >> Apple Mac Quadra 950 built into it. I rounded up a monitor (but no >> keyboard) and fired one up. It boots to MacOS then asks for a password. >> Is there anyway to get around the password other than reinstalling >> everything? >> There are six of them available. Is anyone interested in them? They have >> a >> huge non-apple power supply, and at least one floppy and one hard drive >> and all the regular Nu-Bus (?) slots. Another that I opened had two hard >> drives. >> >> Joe >> > > >

27 years, 1 month

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Dayton Hamvention

by ethan_dicks＠yahoo.com

--- Marvin <marvin(a)rain.org> wrote: > > As it is really getting close now, just curious how many people on this list > will be at Dayton Hamvention. I'm hoping to go (I live in Columbus), but I also have another thing going on at the same time in Western PA (near Butler). :-( If I can go, I'd be very interested in a get-together. -ethan _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

27 years, 1 month

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CURSOR cassettes

by ds_spenc＠alcor.concordia.ca

Greetings, I've managed to transfer the contents of CURSOR Magazine (for the PET) cassettes #1 to #8 to my Amiga. Cassette #2 is incomplete due to damage to one program. Is there already an archive of Cursor Magazine cassettes? Does anyone have the program "RACE" >from Cursor #2? -- Doug Spence ds_spenc(a)alcor.concordia.ca http://alcor.concordia.ca/~ds_spenc/

27 years, 1 month

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OT: neon lamps from previous post

by mranalog＠home.com

John said: > Does you have a reference on how to build an oscillator or counter out > of neon lamps? Here is the zip file that put up a couple of months ago. It contains 22 scanned pages of glow lamp logic circuits. The zip file is 1.6 MB. http://www.best.com/~dcoward/LAMP.ZIP I hope this helps, --Doug ==================================================== Doug Coward dcoward(a)pressstart.com (work) Sr. Software Eng. mranalog(a)home.com (home) Press Start Inc. http://www.pressstart.com Sunnyvale,CA ====================================================

27 years, 1 month

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How scarce (valuable) is core for the PDP-8?

by CLASSICCMP＠trailing-edge.com

Mike wrote: >> Perhaps a >> smaller array, but with LARGE cores where the magnetic state could have >> some visual indicators. >How would that work? Would you have an LED for each bit or something? Get a little bit away from magnetic storage, and you can use neon lamps as storage elements which are self-illuminating :-). Neon lamps - when powered by DC - have a nice memory property: They take about 90VDC to light up, but after they light up they'll stay on until the voltage drops below 60VDC or so. Only problems are: 1. The thresholds can vary greatly from unit to unit. 2. The thresholds will vary depending on ambient light, as well. Property 2 above can be used to build oscillators out of pairs of neons, as a matter of fact... Tim.

27 years, 1 month

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core memory

by mark_metzler＠xoommail.com

At 10:25 PM 5/5/99 -0700, Sellam Ismail wrote: > >Yeah, then I spray-painted it neon pink because I didn't like the original >color. Core memory is cool. No way. It wouldn't be Art until you made it into a dress, as a commentary on the way technology has shaped our lives. - John This is too much like what actually happened to me. A few years ago I learned that someone had an IMSAI 8080 they wanted to get rid of, in a city 150 miles >from where I live. I was willing to make the trip to go and rescue it. But when I finally got in touch with the owner by phone, they said "I wish you had gotten ahold of us sooner! We just gave it to an artist who wanted to use it for a collage." I can still imagine that front panel plastered in bright-colored goo, along with a bunch of other techno-junk, hanging on some wall in humiliation! --- Mark Metzler VON NEUMANN MACHINES Online Computer History Bookstore/Museum http://home.pacbell.net/mmetzler/vnm.html ______________________________________________________ Get your free web-based email at http://www.xoom.com Birthday? Anniversary? Send FREE animated greeting cards for any occassion at http://greetings.xoom.com

27 years, 1 month

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CLASSICCMP digest 759

by mtapley＠swri.edu

>r. said: >On Fri, 30 Apr 1999, Huw Davies wrote: >The NeXTs don't even really have power switches. Command-command-~ is supposed to bring up a monitor through a non-maskable interrupt, into which you can enter the command ? for info on available commands. "halt" saves files to disk and gracefully halts the system. "mon" goes to the ROM monitor but does not gracefully halt the system. An emergency shutdown is available by pressing <left alternate>-<left command>-<numeric keypad *>. (on an ADB keyboard, use the command bar instead of the left command key). This will not power off the computer but will do a hard reset of the CPU. This does *not* result in a clean shutdown, and can damage an optical disk if it's in the middle of a write operation (so I hope you didn't just do it ;-) ). - Mark

27 years, 1 month

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console pinout?

by cmcmanis＠mcmanis.com

Ok, I give up, where the heck does one find the pin-out for the weird not-quite-an-RJ-45 connector that connects the console to the VAX? I've got a cable that has the weird connetor on it (both ends :-() which no doubt plugs right into a VTxxx VAX Console Terminal but I'm more interested in something like a serial port of a PC pretending its a VTxxx console terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I can plug into one of those DB-9 hood things. --Chuck

27 years, 1 month

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More info RE: KA650 & uVAX

by allisonp＠world.std.com

> On Wed, 5 May 1999, Greg Linder wrote: <> <> > installed in. I agree with the cardboard solution- Whenever I mount dri <> > of any type that I don't have many of I always either cover the bare me <> > case with contact paper or a piece of carboard or something <> > non-conductive. <> <> A strip of mylar or other thick, durable plastic-like material cut from <> sheet would probably be even better. Skip the metal. Don't use it and see how it goes. I have a few in service that way and they are fine. Allison

27 years, 1 month

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MacIntosh in a box question

by rigdonj＠intellistar.net

I found some strange looking rack mount boxs in a salvage place today. They're marked AuudioVision 90. I opened one up and found that it has an Apple Mac Quadra 950 built into it. I rounded up a monitor (but no keyboard) and fired one up. It boots to MacOS then asks for a password. Is there anyway to get around the password other than reinstalling everything? There are six of them available. Is anyone interested in them? They have a huge non-apple power supply, and at least one floppy and one hard drive and all the regular Nu-Bus (?) slots. Another that I opened had two hard drives. Joe

27 years, 1 month

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TK70 resolution

by cmcmanis＠freegate.com

I disassembled enough of the VAX3800 to get to the TK70 and pulled it out. The maintenence logs were stuck into the top part of the cabinet behind it and apparently this TK70 was replaced in August of 1995. It also had the skid plate attached so it was a simple operation to slip it into the BA123 I've got. The skid plate had a plastic insulator on it between the skid plate and the drive so it looks like the skid plate has to be insulated on these drives. I'm guessing that somewhere in the manual it says: "MUST BE INSULATED, OTHERWISE A SMALL FIRE WILL BREAK OUT NEAR THE POWER CONNECTOR AND SMELL REALLY WEIRD." :-) Its running in the uVaxIII now with no worries. After its had a few hours on it I'll "upgrade" again to the KA655. On an unrelated note, I've got a couple of KFQSA DSSI controllers now, are they usable in a Q/Q backplane? Their CD fingers appear to only touch power and the DMA grant lines (backside of the C connector) --Chuck

27 years, 1 month

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HP 9000 840S

by steverob＠hotoffice.com

> > Joe > > At 07:17 PM 5/5/99 -0700, you wrote: > >Re: > > HP 9000 840S > > > >> I have a chance to pick up one of these. Does anyone know anything > about them? > > > >The 9000/840 was HP's first PA-RISC HP 9000. It's the same > >hardware as the HP 3000/930, and has an 8 MHz clock. They > >generally shipped with something like 24 MB, IIRC (which wasn't > >enough). > > > >I think you should take it! If not, post here...a couple of us might be > >interested. > > > >SS > > > Joe, I'm definitely interested: Can you provide more details? Is the system complete? Is the OS installed? I'm assuming it's in Central Florida? TIA, Steve Robertson - <steverob(a)hotoffice.com>

27 years, 1 month

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Sanyo ??C-555 spotted at Beaverton Oregon Goodwill

by SUPRDAVE＠aol.com

In a message dated 99-05-06 12:32:28 EDT, you write: > Model number obscured by price tag. Doesn't have a keyboard. Sort of > looks like a floppy P-box but I noticed it had video and keyboard > connections on the back. > > Any of you folks looking for one of these beasts? > isn't that the hated pc-almost-compatible computer?

27 years, 1 month

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Teac FD-55GFR 5.25" floppy drive

by mark_k＠iname.com

Hi, The other day I bought a used Teac FD-55GFR 5.25" 1.2MB floppy drive, in order to archive various old 5.25" disks. The drive works, but a whining sound is made when the drive is spinning. This is caused by the mounting of the plastic spinny thing (not sure of the technical term :) which sandwiches the disk hub to the motor spindle vibrating. This is held in place by a C-clip. Pressing lightly, really just touching the spindle of the plastic part stops the whining. My drive may be missing its top casing, if there should be one. Maybe a piece of rubber or something fixed to the top casing presses the spindle in complete drives? I thought of fixing the whining by using a piece of sticking plaster. Any better ideas? Are these drives supposed to have a top casing? In my one I can see the head assembly and stepper motor moving. -- Mark

27 years, 1 month

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DEC pc distribution summary

by max82＠surfree.com

Ok, here's the result: Anthony Eros is getting 8 machines LordTyran is getting two more machines which I manage to scrounge up (there is yet another machine available) Jason Willgruber is getting a hard drive. These three people need to e-mail me with their zip codes, and I will tell them how much money they need to send me. There is one last machine up for grabs. --Max Eskin (max82(a)surfree.com) http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power

27 years, 1 month

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35pin SIMMs

by djenner＠halcyon.com

I ran across three 35-pin, 256 KB, non-parity SIMMs from a Dell proprietary memory board from 1987. Yes, that's 35-- the numbers are clearly marked on the SIMM. If anyone wants these, drop me a message, and I'll send them to you. Thanks, Dave

27 years, 1 month

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More info RE: KA650 & uVAX

by CLASSICCMP＠trailing-edge.com

>>>Yep, you got it! [Q/CD all across] >> >>Cool, also the wide spacing to allow the metal covers fooled me for a >>minute, there is only 11 slots in these puppies. >Let me see if I've a few facts straight here. This is a BA213 you're >talking about, and this is the same backplane as would be in a DECserver >550. Right. Note that there are Skunk Box enclosures where the first 3 or 4 or 6 slots aren't Q-bus at all. Various 4000-xxx series boxes, in particular. > Now for the really STUPID question, Q/CD means that all slots are >full height, like the first 3 or 4 on a BA123. Again, on the nose! Tim.

27 years, 1 month

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core memory

by jfoust＠threedee.com

At 10:25 PM 5/5/99 -0700, Sellam Ismail wrote: > >Yeah, then I spray-painted it neon pink because I didn't like the original >color. Core memory is cool. No way. It wouldn't be Art until you made it into a dress, as a commentary on the way technology has shaped our lives. - John

27 years, 1 month

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Dec RL01 drive problem

by wrking＠tsoft.com

I have an RL01 drive which isn't working correctly. I've opened up the back end of the drive so I can see what is happening and what I see is this. 1. Drive starts to spin up, but it's obvious by looking at the spindle of the drive motor, that the motor never reaches full speed. 2. After about 5 seconds, the drive slows some, and the heads attempt to load. 3. The heads then chatter back and forth. They appear to move in about .25 inches and then retract. 4. This continues until I spin down the drive. If I pull the pack out, and hold the switches closed manually, the motor does reach full speed (although the heads never attempt to load). If anyone has any suggestions as to what might be the problem, I really apprecite some information. Thanks, Bill King

27 years, 1 month

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More info RE: KA650 & uVAX

by emu＠ecubics.com

Hi Chuck, -----Original Message----- From: Chuck McManis <cmcmanis(a)mcmanis.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Wednesday, May 05, 1999 11:16 AM Subject: More info RE: KA650 & uVAX >Very cool, I actually picked up three UVAX38xx's in two of them were KA650 >cpus and in one was a KA655 CPU. All three have been "upgraded" to 32MB of >third party memory. The "skunk" boxes were fairly trashed by the process of >sparing them out. I'm guessing that they were part of a cluster. Lucky day ;-)) > As for peripherals they all have TK70 tape drives, and the > associated >controller, starting to get envious ;-)) > one has a board pair M7164/M7165 connected by short cables >across the top. M7164/M7165 is the KDA50 SDI controller, not SCSI. > And there is a drive hiding in one of them. (I've not >identified it yet) they have what look like SCSI II connectors > but a person >suggested they might be DSSI connectors (which I know nothing about). Could be SCSI, could be DSSI, tell us the type ... >I'm going to see if I can bring one of the boxes to life, All are missing >the panel that would have covered the card cage. If not I'll try to enhance >the speed of my world box bases uVax II. I would start with the ka655. Not because she's faster, but the monitor program is better (sometimes the ka650 have the same, but not always) cheers & have fun, emanuel

27 years, 1 month

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core memory

by sloane＠sbus.com

I collect core memory, found a lead to you on the Web. Got some you wanna part with? Gary Sloane SB/US Engineering Inc. sloane(a)sbus.com

27 years, 1 month

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Nec PC-6001A

by dogas＠leading.net

-From: Sellam Ismail <dastar(a)ncal.verio.com> > >Yes, I've got a complete system in my collection with the expansion >chassis and manuals and such. I can try digging it out to make a copy of >the relevant manuals and send them to you. Standard disclaimer on time >applies :) You are a veratible fount of goodies and generosity. What's in the expansion chassis? Thanks - Mike

27 years, 1 month

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[Fwd: Cromemco Z-2 cabinets]

by jim_willing＠mail.intel.com

Forwarded from newsgroup 'comp.os.cpm', reply to original poster if interested. -jim

27 years, 1 month

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OT: neon lamps from previous post

by Philip.Belben＠pgen.com

>> Flip flop should be easy too. This one looks rather like an ECL logic gate: >> >> +V DC >> | >> < >> > >> < >> > >> | >> +--+--+ >> | | >> (:) (:) >> | | >> A--+ +--B >> | | >> > > >> < < >> > > >> < < >> | | >> GND GND >> >> Pull A to ground. Lefthand neon lights. Voltage on right hand neon too low to >> maintain discharge and it goes out. Same works for B - RH neon lights and >> voltage at the common anode too low to maintain LH neon, which goes out. > > Nope! If left is not list then there is no current flow across the > resistor. To ignite the left lamp a voltage (negative maybe 25V) would > have to be applied at A. To extinguish left a voltage of +25(or more) I see what you mean. (Careless of me!) A and B would definitely need pull-ups, but I think it could work. The initial current when you apply the negative pulse to one input should drop the voltage at the common anode sufficiently to extinguish the other neon. > volts would have to be applied. Generally this kind of logic is pulse > coupled using transformers or capacitors. Note a bistable was done in the > case mentioned with one Neon. > > Doing ascii logic from telnet seesion is far to slow for me to give a > complete circuit. Don't post a circuit yet - I want to think about the one-neon flipflop. Theoretically possible, anyway - the two states are on and off (now why does that sound vacuous?). Philip.

27 years, 1 month

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OT: neon lamps from previous post

by Philip.Belben＠pgen.com

Is this really off topic? It's really interesting anyway. > Simple oscillator using NE-2: > > 90 VDC > | > > > < 470K > > > < > | > +------+ > | | > (:)NE2 _ > | - .1 uF 100V > | | > +------+ > | > GND Hmm. The capacitor charges through the resistor until the neon strikes. Since the neon now draws more current than comes through the resistor, the capacitor discharges through the neon until the neon extinguishes. Process repeats. Neat. I suppose that if the resistor is too small, the neon doesn't extinguish, but the capacitor merely discharges until it reaches the steady state voltage of the neon at the current through the resistor. I like it! Flip flop should be easy too. This one looks rather like an ECL logic gate: +V DC | < > < > | +--+--+ | | (:) (:) | | A--+ +--B | | > > < < > > < < | | GND GND Pull A to ground. Lefthand neon lights. Voltage on right hand neon too low to maintain discharge and it goes out. Same works for B - RH neon lights and voltage at the common anode too low to maintain LH neon, which goes out. Don't know the component values though. Outputs are also A and B. You may need pull-up resistors on them, depending on what you're driving. Fun. Keep neons in light-tight containers, though! Are there circuits in which optically coupled neons are useful? Philip.

27 years, 1 month

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PDP11 Plessey disk drive info needed

by Jgzabol＠aol.com

Hi all, I would like to connect a Plessey disk drive to a PDP11 RK11-D controller. The drive has a fixed platter and a removable platter, compatible to RK05 I believe, and these numbers on it: Plessey 3468-0231 PMDD/11B 700540-200217D It has a 42 pin MRA 42 S mating connector, and same with a terminator. I believe the 42 pin should be a Drive Bus, to be connected with standard Unibus cable to controller slot 2A/2B. Question: Would anyone have a maintenance manual for the Plessey drive available ? Short of that, maybe the pinout of the connector, so that I can make the cable ? Of course, reverse engineering of the disk electronics should reveal the pinout/RK11 compatibility, but having the docs just would save a lot of work and be more reassuring ! Thanks and regards John G. Zabolitzky

27 years, 1 month

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Memory differences between KA630 and KA650

by cmcmanis＠mcmanis.com

Ok, this one is puzzling me. Everyone said "you need new memory for the KA650." Why? The connectors appear to be identical, although the 650 supports ECC memory (but does it require it?) Enquiring minds want to know! --Chuck

27 years, 1 month

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Bootable floppy?

by CLASSICCMP＠trailing-edge.com

>> Is it possible to make a bootable floppy for a VAXStation 2000 or is the >> system too large for the disk? > >Of what? VMS? the answer is yes, sorta. Standalone backup is one case >where it fits on a RX33 (1.2mb 5.25). Maybe 10 years ago it fit on a single RX33. For a recent version of VMS it is more like 3 RX33's. Tim.

27 years, 1 month

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Lots of machines available

by Philip.Belben＠pgen.com

> Last time I said I beat up some PCs, many of you were disturbed. So this > time, I'm warning you before I do it. There are 8 DEC LPv+ 425dx and > 433dx machines. They are all 486 DX with RAM from 0 to 16 MB, some have > hard drives around 200 MB, some should have OS/2. They are being thrown > away because they have miscellaneous problems, and we haven't been able > to fix them. I haven't tried, so I don't know what the problems are. > Anyway, first come, first served. Price is 1.2 * shipping. Memories from 0 to 16MB? If there are any 4MB, 30pin parity simms in that lot, I'll happily pay 120% of shipping for a set of four. Philip.

27 years, 1 month

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console pinout?

by danburrows＠mindspring.com

People looking for MMJ connectors / adapters contact me off list. I have a fair stock of adapters and the crimpers with a few ends. Dan >> Ok, I give up, where the heck does one find the pin-out for the weird >> not-quite-an-RJ-45 connector that connects the console to the VAX? I've got >> a cable that has the weird connetor on it (both ends :-() which no doubt >> plugs right into a VTxxx VAX Console Terminal but I'm more interested in >> something like a serial port of a PC pretending its a VTxxx console >> terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I can >> plug into one of those DB-9 hood things. >> >> >> --Chuck >> >> >> > >I've got a cable with an MMJ on one end and a broken MMJ on the other >and I'm looking for a serial connector with MMJ's on both. > >Wanna swap 'em? > >Bill > >--- > bpechter@shell.monmouth.com|pechter@pechter.dyndns.org > Three things never anger: First, the one who runs your DEC, > The one who does Field Service and the one who signs your check. >

27 years, 1 month

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HP 9000 840S

by rigdonj＠intellistar.net

I have a chance to pick up one of these. Does anyone know anything about them? Joe

27 years, 1 month

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Whew!

by roblwill＠usaor.net

Does it smell sorta like fish? That's what the Tandy 1400 that I have smelled like when the HD controller blew. Although, that thing always fishy.... :) -- -Jason Willgruber (roblwill(a)usaor.net) ICQ#: 1730318 <http://members.tripod.com/general_1> -----Original Message----- From: Chuck McManis <cmcmanis(a)mcmanis.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Wednesday, May 05, 1999 8:33 PM Subject: Re: Whew! . > >Yup, it could easily be the remains of a Tantalum cap. Weirdest smell. I >can't believe that the rest of the board could survive something like this >but hey it isn't like the thing is any good as a paper weight! Now to pull >one of the others and figure out what value cap used to live there... > >--Chuck > >

27 years, 1 month

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PDP11 Plessey disk drive info needed

by Jgzabol＠aol.com

In einer eMail vom 05.05.99 21:02:46, schreibt Tony: << > That is EXACTLY what I need - the connector has the letters above imprinted, > and the meaning of the signals I have from the DEC docs. This is precisely the > RK-11 Drive Bus. It's _almost_ the RK11 bus. Not suprising since the Diablo/DRI model 30 was sold by DEC as the RK02/RK03 for a time. I've cabled one up to an RK11-C, and it is, indeed, just a cable. The problem is in the drive select lines. RK11-C's use 1-of-4 code (you assert one of 4 lines, like on a floppy drive). RK11-D's use a 3 bit binary selection code. RK05s can handle either (there's a signal on the connector of an RK05 that is pulled low by an RK11-D to indicate this). RK02's, etc can't. That's why you'll need a couple of chips to do the interfacing. -tony >> Hi Tony, I am aware of that fact. It is of course a very simple decoder. Since I will need to mate two different cables (one from the drive with the 42-pin connector, and another one from the controller with the bus paddle) I will have a little intermediate board anyway, where this can easily be put. First of all, of course, I will need to verify that the Plessey interface is in fact identical to the Diablo one; since the connector is the same, I am in good hope. Regards John

27 years, 1 month

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console pinout?

by CLASSICCMP＠trailing-edge.com

>Ok, I give up, where the heck does one find the pin-out for the weird >not-quite-an-RJ-45 connector that connects the console to the VAX? I've got >a cable that has the weird connetor on it (both ends :-() which no doubt >plugs right into a VTxxx VAX Console Terminal but I'm more interested in >something like a serial port of a PC pretending its a VTxxx console >terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I can >plug into one of those DB-9 hood things. The "weird connector" (DEC MMJ=Modified Modular Jack) is widely available. Perhaps the easiest mail-order source, should you not have any decent local electronics shops, is Digi-Key ( www.digikey.com ).

27 years, 1 month

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core memory

by mbg＠world.std.com

>> Ouch... that image really hurts... > >Yeah, then I spray-painted it neon pink because I didn't like the original >color. Core memory is cool. No... that's K3WL! <barf> Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 1 month

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FW: FREE!!! PDP-11/34A Complete System

by kyrrin＠my-dejanews.com

Anyone in or near Philadelphia want a free PDP-11/34A? If so, check this out... -=-=- <break> -=-=- On Wed, 05 May 1999 19:41:05 GMT, in alt.sys.pdp11 you wrote: >>From: moorem(a)bucks.edu >>Newsgroups: alt.sys.pdp11 >>Subject: FREE!!! PDP-11/34A Complete System >>Date: Wed, 05 May 1999 19:41:05 GMT >>Organization: Deja News - The Leader in Internet Discussion >>Lines: 10 >>Message-ID: <7gq6sh$49e$1(a)nnrp1.deja.com> >>NNTP-Posting-Host: 192.112.54.10 >>X-Article-Creation-Date: Wed May 05 19:41:05 1999 GMT >>X-Http-User-Agent: Mozilla/4.5 [en] (WinNT; I) >>X-Http-Proxy: 1.0 x15.dejanews.com:80 (Squid/1.1.22) for client 192.112.54.10 >>Path: news1.jps.net!news.pbi.net!165.113.238.17!pln-w!extra.newsguy.com!lotsanews.com!nntp.primenet.com!news.maxwell.syr.edu!nntp2.dejanews.com!nnrp1.dejanews.com!not-for-mail >>Xref: news1.jps.net alt.sys.pdp11:87 >> >>Free for the taking: Complete PDP-11/34A system in 6 foot 22" rack. >>Includes processor, memory, 2 RL02 disk drives, 1 RK05F disk drive >>(a fixed disk seen as 2 RK05 removables). This unit has been sitting >>in my barn for 10 years or so and is kind of dirty but it ran when I >>parked it! Terms: All or nothing, you pick up. Location: Eastern PA >>(central Bucks county, north of Phila.). Email: moorem(a)bucks.edu >>Thanks!!! >> >>-----------== Posted via Deja News, The Discussion Network ==---------- >>http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own -=-=-=-=-=-=-=-=- Bruce Lane, Owner and head honcho, Blue Feather Technologies -- kyrrin (at) bluefeathertech [dot] com Web: http://www.bluefeathertech.com "...No matter how we may wish otherwise, our science can only describe an object, event, or living thing in our own human terms. It cannot possibly define any of them..."

27 years, 1 month

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core memory

by mbg＠world.std.com

>Carefully store? I just nailed it through the center to hang it. Ouch... that image really hurts... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 1 month

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More info RE: KA650 & uVAX

by CLASSICCMP＠trailing-edge.com

>>> one has a board pair M7164/M7165 connected by short cables >>>across the top. >> >>M7164/M7165 is the KDA50 SDI controller, not SCSI. >Ok, I give up, what the heck is this? QDA "Quad" processor. Ok, is it used >for clustering or something? It runs RA70's, RA80's, and RA90's. 4 at a time. >So here are some "skunk box" questions: > >What type of backplane is this? Looks almost like it is Q/CD all the way >across. Yep, you got it! >There is an ethernet interface in one called a DESQA any good? Seems like a >follow on to the DEQNA as it has both 10B2 and AUI ports on it. The other >two chassis both had DELQA's in them. The DESQA is skunk box version of the DELQA. >so that answers that question, and by careful disassembly I can see that >the connectors are correct in terms of how I plugged them, so the only >question is if the fault was a board short or if the power connector is >non-standard. Anyone? It's a perfectly standard connector. The components near the connector are, in this case, probably nothing fancier than some electrolytics for bypassing. Is this reasonable? My TK70's are currently in running systems, and my customers would get angry if I started pulling them apart this time of night :-) -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

27 years, 1 month

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Nec PC-6001A

by dogas＠leading.net

I tripped over one of these for $2 at a thrifty. I like the external and overall design but the video out is responding dissappointingly to initial probes. The only thing on the net I've found at the Obsolete Musuem says it's an 8k ms basic machine with a cartridge slot that's kinda exidyish (joystick ports and a speaker too) and what's this wierd printer interface?. Seems like a cool little machine. Anyone know about it? :) Mike

27 years, 1 month

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Whew!

by allisonp＠world.std.com

<So the zillion dollar question is, why the heck did the TK70 smoke like tha Likely a tantalum capacitor cooked. I've seen that on various drives. often if removed and the board cleaned up they still operate. They usually short just hard enough that a good power supply will smoke the offending cap. Generally if caught soon enough the no damage save for a bad cap cooked to a crisp. <Is the power connector not a 'standard' one? +5 +12 and GND little plastic <molex hood? Most of the TKs I know use the same power connector as a floppy/hard disk. <could try one without the metal plate but I'm not going to experiment on m <only two remaining drives! I'm guessing there is some "other" type of plat <for these drives. nope, standard plate. Maybe too long a screw? Allison

27 years, 1 month

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FREE!!! PDP-11/34A Complete System

by mbg＠world.std.com

>Xref: world alt.sys.pdp11:6285 >Path: world!blanket.mitre.org!newsfeed.berkeley.edu!howland.erols.net!news-peer.gip.net!news.gsl.net!gip.net!news.maxwell.syr.edu!nntp2.dejanews.com!nnrp1.dejanews.com!not-for-mail >From: moorem(a)bucks.edu >Newsgroups: alt.sys.pdp11 >Subject: FREE!!! PDP-11/34A Complete System >Date: Wed, 05 May 1999 19:41:05 GMT >Organization: Deja News - The Leader in Internet Discussion >Lines: 10 >Message-ID: <7gq6sh$49e$1(a)nnrp1.deja.com> >NNTP-Posting-Host: 192.112.54.10 >X-Article-Creation-Date: Wed May 05 19:41:05 1999 GMT >X-Http-User-Agent: Mozilla/4.5 [en] (WinNT; I) >X-Http-Proxy: 1.0 x15.dejanews.com:80 (Squid/1.1.22) for client 192.112.54.10 Free for the taking: Complete PDP-11/34A system in 6 foot 22" rack. Includes processor, memory, 2 RL02 disk drives, 1 RK05F disk drive (a fixed disk seen as 2 RK05 removables). This unit has been sitting in my barn for 10 years or so and is kind of dirty but it ran when I parked it! Terms: All or nothing, you pick up. Location: Eastern PA (central Bucks county, north of Phila.). Email: moorem(a)bucks.edu Thanks!!! -----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own

27 years, 1 month

1
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More info RE: KA650 & uVAX

by mbg＠world.std.com

>>M7164/M7165 is the KDA50 SDI controller, not SCSI. > >Ok, I give up, what the heck is this? QDA "Quad" processor. Ok, is it >used for clustering or something? It is a KDA50-Q, Qbus to MSCP disk controller... >KFSQA - Q22 DSSI Controller, the drives hiding in the cabinet are two >RF71's. So it looks like 1.6GB about of disk space. Of course I have no Nope, KFQSA is a single quad board... The machine may have had one in the past, but not now... do NOT use a SCSI cable/terminator with those DSSI drives... >What type of backplane is this? Looks almost like it is Q/CD all the way >across. Yes, Q22/CD all the way... >There is an ethernet interface in one called a DESQA any good? Seems like >a follow on to the DEQNA as it has both 10B2 and AUI ports on it. The >other two chassis both had DELQA's in them. DESQA = DELQA with s-box handle (essentially). Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 1 month

1
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PDP-8 M8652...

by allisonp＠world.std.com

Quick question of the PDP-8. I have a M8652YA, I'd my bet that it's similar if not the same as M8655. Can anyone confirm? A schematic, chip locator and a pinout of the connector would help too. Allison

27 years, 1 month

1
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Cosmac ELF article in Popular Electronics

by fauradon＠mn.mediaone.net

I sent another message about my scans that was rejected by the listproc (had a command keyword in the first line!) I scanned at 100 DPI in 16M colors then saved as JPEG and tada! I don't know what the deal is, what color resolution did you use? I believe JPEG is better at compressing full color images than lower color depth one. I used an Artec as6e scanner and Paint Shop. I was goin to do some color reduction on them but when I saw the size I didn't think it would be necessary. Francois >Man, how'd you get such nice scans!? And they even came out smaller than >my scans. What scanner are you using, and what DPI did you scan at? > >Sellam Alternate e-mail: dastar(a)siconic.com

27 years, 1 month

3
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mainframe for sale - not general purpose machine.

by kstumpf＠unusual.on.ca

>>Mohawk Data Systems Mainframe SUPER 21 > Just to help out prospective buyers. MDS made data entry systems, not general purpose computers. Having said that, the guts of the Super 21 is an ATRON (now there's a popular name eh) minicomputer, but it was twisted and shaped, especially the operating system to accept multiple data streams and organize them onto 9-track tape or buffer the files on disk for data transmission to a host. It would be an interesting acquisition. ---------------------------------------------------------------------------- ------------------------------- Kevin Stumpf * Unusual systems * www.unusual.on.ca +1.519.744.2900 * EST/EDT GMT - 5 Collector - Commercial Mainframes & Minicomputers from the 50s, 60s, & 70s and control panels and consoles. Author & Publisher - A Guide to Collecting Computers & Computer Collectibles * ISBN 0-9684244-0-6 .

27 years, 1 month

1
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Whew!

by cmcmanis＠freegate.com

In classic fashion it appears the TK70 drive committed suicide in order to save the circuit breaker the trouble of tripping. Sigh. After letting the thermal overloads cool off and reset, I brought the system up one board at a time (first CPU+MEM) then CPU+MEM+Ethernet, then CPU+MEM+Ethernet+DISK, etc. Lastly I plugged power back to my disks and got a complete boot. The TK70 is toast, a component near the power connector is ash as far as I can tell (and boy does it smell!) The drive mechanism appears to be intact and is available to anyone for 1.2*cost of shipping. (nice formula that) So the zillion dollar question is, why the heck did the TK70 smoke like that? The interconnect between the controller and the board says "This Side DOWN" and that was connected with the label against the PCB (which makes it lower relative to the top of the drive) Is the power connector not a 'standard' one? +5 +12 and GND little plastic molex hood? The other change was I used a skid from the disk drive. The metal plate on the bottom touches the screws, but it did not appear to contact the PCB. I could try one without the metal plate but I'm not going to experiment on my only two remaining drives! I'm guessing there is some "other" type of plate for these drives. --Chuck

27 years, 1 month

2
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HP 9845 and space schuttle program was Re: Any HP 9845 Desktops Still In Service?

by rigdonj＠intellistar.net

I got this from a guy that used to use the HP 9845 calculator and thought this group might be interested. > >On Thu, 29 Apr 1999, Joe wrote: >> What kind of work did you do with the 9845? Do you still have anything >> for them? > >Joe, > >There's no trace of anything to be found...not even for the HP 9000/520 >used to migrate some of my applications. Let's see if you'll regret >asking me what I did with it? :-) > >I actually used the 9845B (Model T) for Space Shuttle flight support >(STS-2 through STS-24). I worked at Rockwell International Space Systems >Division in Downey, California (now owned by Boeing). I started out in >1979 doing bean-counting work. I wrote BASIC programs that create bar >charts, plots, and tabulated data for the Flight Systems Design and >Performance department. My manager, Bill Schleich, was the one who >developed the shuttle's roll maneuver shortly after lift-off. > >Most (99.9%) of the engineers were IBM/TSO die-hards because they were >old Apollo guys. They considered the HP 9845 to be a toy, but they were >really afraid of it. Some of those guys preferred to use a printable >tele-type terminal over CRTs! > >On the first shuttle flight there was unexpected lofting of the vehicle >that we didn't account for in our trajectory predictions. Finally an >engineer named David Pearson was able to trace the problem down to us not >having up-to-date atmospheric data (our mainframe trajectory analysis >programs used montly weather tables). > >Bill Schleich was also Dave Pearson's manager and he appreciated the >power and versatility of the microcomputer...it helped that I impressed >him with fancy graphics on the internal thermal printer (mainframe >hardcopies of graphics had to be trucked from Seal Beach - about 20 miles >away). > >Previously, I crossed-over to doing some small engineering studies where >I'd plot data, etc., using the 9845. But the big project was for the >flight support task! There was a lady named Kathy O'Connor who did some >cool graphics with the robotic arm against a stunning line-drawing of the >shuttle in X-Y-Z drawings. > >Anyway, to shorten this story, we had the launch site send us FAXes of >their weather balloon data (no FTP in those days) for weeks, days, hours, >and up to 15 minutes before launch. We had an HP 9872A plotter that also >had a digitizer sight. I wrote an interactive program to have an >engineer align the FAX on the plotter's plate and digitize points along >the different data lines. > >The points were stored in arrays and fed to a cubic-spline interpolation >program to recreate the line with more (smoother) points. The output was >formatted into lines to be uploaded to the IBM mainframe where our big >number-crunching trajectory analysis (M-50) program ran...it was much too >large for the 9845 to even dream of running. > >The data went out over a GTE 300-baud modem that was about as large as >one of today's VCRs. HP provided the (BASIC) software to do the actual >file transfer and communications with the mainframe. Someone else wrote >the programs on the mainframe to capture the uploaded data for feeding >into the M50 program. > >When the M50 finished, it put the data back into tabulated form and >downloaded it, one line at a time, to the HP. I wrote a suite of >programs that read in the captured data and parsed it into data arrays >which were plotted on the CRT for quick "DUMP GRAPHICS" snap-shots. We >also used the 9872 4-color plotter for comparison plots but the thermal >printer plots were needed quickly. > >Believe it or not, the process was fast enough that we once actually had >plots for T-15minute winds in time to run downstairs in Rockwell's >mission control room (3rd or 4th backup to NASA's MC in Houston) and see >a live launch on live NASA video feeds, including infra reds. > >After about the 5th shuttle flight, I was no longer on-call and other >engineers (all older than me because I was only 21 in 1981...I started >programming professionally right out of high school) were following my >procedures. I continued to make modifications for new features, etc., >until the 10th flight...I wrote every single byte of code for that suite >of programs except for the package to communicate over the modem! > >I had transferred to Seal Beach a few flights before Challenger >exploded. When I heard about it, I called one of the engineers >responsible for the "Day of Launch Flight Support Effort" and he told me >that that was the first flight that they didn't run the program (except >for STS-1 of course because we didn't know we needed it). > >They wouldn't have seen anything strange even if they had run the >program...but I like to imagine that my code would've warned them! :-) > >It's been a long time since I had a chance to brag about that. Thanks >for asking. BTW, I was the system administrator for that particular >9845. There were at least 3 others managed by different groups. I had >access anytime I wanted or needed it. As a result, I ignored the Apple >II, IBM PC, etc., until I migrated to the HP 9000/520. > >But even with the 9000/520 being such a step up, I bought an Amiga in >1986 and have been in love with Amigas ever since! > >Visit http://www.amiga.com or http://www.amiga.de if the first one is >down. > >Later, >David > >_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ >_/_/ David C. Waters _/_/ Integrated Business Solutions _/_/ >_/_/ Multimedia Business Answers _/_/ Video Audio CD-ROM Publishing _/_/ >_/_/ E-Mail: mbanet(a)netcom.com _/_/ World Wide Web and TV Access! _/_/ >_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > >

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mainframe for sale (NC)

by SUPRDAVE＠aol.com

Not sure of the type or kind or whether it's even old enough, but you figure it out. reply to person below please begin pasted text: >Mohawk Data Systems Mainframe SUPER 21 >old mainframe (HD says "Built in 84") > Haven't started playing with it yet, has two big floppy drives (10 inch?) >Monitor, keyboard, 2 printers, cabling, lots of other goodies. >Make me an offer. >Don't know if it even works... yet. But.. if it does, the price goes up the longer I work >on it. > Judging from the size of the cooling fans on it, it could probably be used as a >space heater also. <grin> >Jim jpfenske(a)intrex.net

27 years, 1 month

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Dec RL01 drive problem

by CLASSICCMP＠trailing-edge.COM

> 1. Drive starts to spin up, but it's obvious by looking at the spindle of >the drive motor, that the motor never reaches full speed. > 2. After about 5 seconds, the drive slows some, and the heads attempt to >load. If the drive never reaches full speed, then the heads aren't supposed to come out. This indicates a problem with the servo control board (the one near the spindle motor) perhaps. > 3. The heads then chatter back and forth. They appear to move in about .25 >inches and then retract. > 4. This continues until I spin down the drive. > >If I pull the pack out, and hold the switches closed manually, the motor >does reach full speed (although the heads never attempt to load). "Full speed reached" (and speed regulation in general) is controlled by the little magnetic gap sensor you see near the hub spindle and the notches in the RL01 cartridge's hub. >If anyone has any suggestions as to what might be the problem, I really >apprecite some information. After the simple mechanical checks others have suggested, I'd recommend trying a replacement servo control board. Tim.

27 years, 1 month

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core memory

by allisonp＠world.std.com

<I collect core memory, found a lead to you on the Web. < <Got some you wanna part with? < <Gary Sloane <SB/US Engineering Inc. <sloane(a)sbus.com What do you do with it once you have it? Many of us collect core but it's to support working system that were designed for it. Allison

27 years, 1 month

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Yowee! Kazowie!

by cmcmanis＠freegate.com

This is one of those times where "winning" an auction is wild. So I tested pulled the KA650 (I know the KA655) would be better, and the third party memory boards out of one of the BA213 chassis and replaced the KA630 and 12MB(4+8MB) of RAM. Question: The KA650 ram linkage cable has slots for four RAM boards, the KA630 one has slots for two, I used the KA650's cable and it hangs over the next couple of Q/Q slots, can I use the KA630's cable? They seem to have the same number of pins but I haven't counted. I power up this puppy and right away it's different because it starts at #40 and starts counting down. The banner says: KA650-A V5.3, VMB 2.7 Performing normal system tests. Then I boot the current image of netbsd on it and it reports 64MB of "real" memory, so these memory boards are 32MB each not 16MB each. Cool! Then I power it down, and install one of the TK70 drives in place of the Exabyte that has been giving me some trouble. Reboot and the kernel finds the drive and all is well. Power it down again so that I can button it up, go back into another room where I'll tip into it without the noise, power it up get the >>> prompt and type 'b' but it isn't echoed. Go back to the machine room and the vax is dark and the room smells. Yikes! Turn it off, pull all the boards, inspect them for damage. There isn't any, turn on the power with only the CPU board installed, and notice a "light" in the TK70 drive. Now since there aren't any light bulbs in the drive I look closely and sure enough it is flames around a resistor in there. Off goes the power, out comes the TK70, try it again, but no go, the DCOK like don't light and there is still a vague smell coming from the chassis. Kazowie! So, does anyone have the printset for the BA123 power supply? I'm pretty sure the boards survived, the TK70 I'm not so sure about. I sure wish I knew why it lit up like that. --Chuck

27 years, 1 month

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Lots of machines available

by max82＠surfree.com

Last time I said I beat up some PCs, many of you were disturbed. So this time, I'm warning you before I do it. There are 8 DEC LPv+ 425dx and 433dx machines. They are all 486 DX with RAM from 0 to 16 MB, some have hard drives around 200 MB, some should have OS/2. They are being thrown away because they have miscellaneous problems, and we haven't been able to fix them. I haven't tried, so I don't know what the problems are. Anyway, first come, first served. Price is 1.2 * shipping.

27 years, 1 month

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core memory

by ethan_dicks＠yahoo.com

--- sloane <sloane(a)sbus.com> wrote: > I collect core memory, found a lead to you on the Web. > > Got some you wanna part with? I might have a core stack that is available. I have some planes from >from a PDP-8L, part of a 4k x 13 bit memory (12 plus parity). It was built around 1968. Offers? -ethan _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

27 years, 1 month

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PDP11 Plessey disk drive info needed

by Jgzabol＠aol.com

In einer eMail vom 04.05.99 21:47:46, schreibt Tony: << > I would certainly appreciate the Diablo pinout - if the pin layout is the > same, I would expect the signals to be the same , at least something easier > to check stan starting from nothing ! OK, here you are. The pin layout on the connector is something like : A B C D E F H J K L M N P R S T U V W X Y Z AA BB CC DD EE FF HH JJ KK LL MM NN PP RR SS TT UU VV WW XX For a total of 42 pins (I am not sure if that's looking at a plug or a socket, but it should be a start). A Read Clock B Write data and clock C Read data D Ground E Read gate F Ready to read/write/seek H Write protect input J Track select 8's K Erase gate L Drive select 1 M High density N Track select 2's P Write protect status R Drive select 2 S Pseudo sector mark T Track select 64's U Drive ready V Drive select 3 W Sector marks X Track select 16's Y Index marks Z Drive select 4 AA Head select BB Track address 128's CC Sector address 1's DD ground EE Write gate FF Track select 32's HH Write check JJ Sector address 2's KK Sector address 4's LL Track select 1's MM Sector address 8's NN Address acknowledge PP +5v for cable terminator RR Track select 4's SS Strobe TT Seek incomplete UU Sector address 16's VV Restore WW ground XX Illegal address If you need descriptions of any of those, let me know - I have the full service manual for the Diablo. > > Thanks > John > -tony >> That is EXACTLY what I need - the connector has the letters above imprinted, and the meaning of the signals I have from the DEC docs. This is precisely the RK-11 Drive Bus. Thank you _VERY_ much! Regards John G. Zabolitzky

27 years, 1 month

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KA650 & uVAX

by CLASSICCMP＠trailing-edge.COM

>I've heard its possible to "upgrade" a uVAX II to a uVAX III by replacing >the KA-630 with the KA-650 CPU. Now I've looked at a KA-650 and it has a >metal cover over its end and a small RJ-xx like plug in it. The KA-630 has <two IDC connectors that go to the 630CNF console plug in the BA123 world >box. Do I also need a conversion kit for the KA-650 or is the CPU with >connectors hiding behind this metal facade? You have the skunk box (BA213-type cabinet) version of the KA650. The skunk box deals with FCC compliance by having a metal cover over each board (or board set). As long as you aren't particularly worried about neighbors turning you in to the FCC, you're welcome to cable up the console any way you want. The console bulkhead on the skunk box KA650 uses DEC MMJ connectors (offset-tab modular pluts) for the serial cable, a rather standard thing in the DEC world. You'll also need KA650-compatible memory to go along with the CPU; KA630 memory doesn't work with the KA650 CPU. -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

27 years, 1 month

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Pertec interface

by emu＠ecubics.com

Hi all, Anybody knows, where i can find a good description & pinning of the pertec tape interface ? thanks a lot, emanuel

27 years, 1 month

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