test-drb

test-drb@ccmp.vtda.org

101090 discussions

by iamcamiel＠gmail.com

On Tue, Jul 31, 2012 at 1:43 AM, Michael Thompson <michael.99.thompson at gmail.com> wrote: >> From: Camiel Vanderhoeven <iamcamiel at gmail.com> >> Date: Sun, 29 Jul 2012 17:25:15 +0200 >> Subject: Re: H7202KA power supply >> >> Replacing the output caps on the 7213 power supply fixed the VBB >> output. However, the + and - 15 V outputs are now completely dead. I'm >> fairly certain those voltages were ok when I started. These are from >> the 7211 module. >> >> Not having any schematics, I traced a few wires. Looks like there's >> circa +160V and -160V and +14V and -14V coming from the main regulator >> (H7200). The 7211, like the 7213, uses a 3527A, which is driven by a >> 32.5 KHz clock signal from the main regulator. No picofuses anywhere >> as far as I can tell. >> >> Camiel. > > The VAX 730 uses almost the same power supply. > Docs for all of the power supplies that you have are here: > http://bitsavers.org/pdf/dec/vax/730/MP01270_11730_Engineering_Drawings_Apr… I didn't realise that. Thanks for pointing it out! Schematics! Camiel.

13 years, 8 months

IBM 7090 mainframe!

by cube1＠charter.net

7090 and 7094 are discrete transistors, not tubes. 709 is tubes. All three exist in collections, I think, though maybe not in running condition Google will help out find them. Jon Elson <elson at pico-systems.com> wrote: >Date: Mon, 30 Jul 2012 09:43:31 -0700 >From: "Chuck Guzis" <cclist at sydex.com> >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> >Subject: Re: IBM 7090 mainframe! >Message-ID: <50165743.1836.50913E at cclist.sydex.com> >Content-Type: text/plain; charset=US-ASCII > >On 28 Jul 2012 at 14:51, Peter Van Peborgh wrote: > > >> > Does anyone know (of) anyone running/restoring an IBM 7090, early 60s >> > vintage? I am about to clear out a friend's collection of vintage >> > computer bits and I may find relevant modules and documentation, h/w >> > and s/w. >> > >I think a real find would be a can of 7090 core oil. > > >Wow, I think any of this gear would be very unlikely to have been saved. >I know Washington University had some SAGE pieces in a warehouse, but I >haven't >seen any 7090-vintage stuff in ANY museum collection. It is kind of a big >hole in their collections. The tube stuff all went in the dumpster as >soon as >transistor and core memory came in, and the early transistor machines had >an even shorter life than most computer generations. Hmmmm, now that I >think of it, I think WU also had a 7094 memory unit - all tubes, kind of >in the transition between tube and transistor. I remember it because an >address wire had burned up and somebody had threaded a wire through >all the burned places to get it running again. A horrible kluge job, too. > >Hmm, that one was not oil-cooled, but maybe the damage I saw was >WHY they went to oil cooling. > >Jon

13 years, 8 months

Hewlett Packard 10B calculator

by rampaginggreenhulk＠yahoo.com

Is there any way of opening these things w/o destroying them, or their appearance anyway?

13 years, 8 months

Looking for Data I/O "calibration extender" 910-1521

by chrise＠pobox.com

After removing the PROMs from my RX02 controller and attempting to extract their contents, I've discovered that the Unipak for my Data I/O System 19 has a failure. It's returning Error 70 whenever socket 6 is accessed. Of course socket 6 is the one the 7643 PROMs need to go in. Error 70 means something's wrong with the "bit supply". Data I/O built a "calibration extender", P/N 910-1521 that was used to enable probing of the Unipak while it was raised up and out of the main chassis. It would sure make it easier to work on this thing if I had access to said extender. Does anyone have one they would be open to loaning out for a short while while I attempt repair of this unit? Or, better yet, does anyone have one they want to sell/trade? Chris St. Paul, MN USA -- Chris Elmquist

13 years, 8 months

cctech Digest, Vol 107, Issue 47

by michael.99.thompson＠gmail.com

> From: Camiel Vanderhoeven <iamcamiel at gmail.com> > Date: Sun, 29 Jul 2012 17:25:15 +0200 > Subject: Re: H7202KA power supply > > Replacing the output caps on the 7213 power supply fixed the VBB > output. However, the + and - 15 V outputs are now completely dead. I'm > fairly certain those voltages were ok when I started. These are from > the 7211 module. > > Not having any schematics, I traced a few wires. Looks like there's > circa +160V and -160V and +14V and -14V coming from the main regulator > (H7200). The 7211, like the 7213, uses a 3527A, which is driven by a > 32.5 KHz clock signal from the main regulator. No picofuses anywhere > as far as I can tell. > > Camiel. The VAX 730 uses almost the same power supply. Docs for all of the power supplies that you have are here: http://bitsavers.org/pdf/dec/vax/730/MP01270_11730_Engineering_Drawings_Apr… -- Michael Thompson

13 years, 8 months

PDP11/05 front panel switch

by cube1＠charter.net

They are actually pretty common C&K toggle switches, especially if it is not one of the momentary ones. DigiKey, Mouser, etc. Or eBay are places you can start your search. Camiel Vanderhoeven <iamcamiel at gmail.com> wrote: >Hi Again, > >While I'm still struggling with the powers supply in the /84, I >decided to also take a good look at the /05. Amazingly, the power >supplies on this one (1972) are 13 years older than those on the /84 >(1985), yet their outputs look absolutely perfect. Plugged in the >cards, and it seems to work, apart from one annoying little thing: one >of the front panel switches is bad. I noticed it when I was >depositing, then reading back some data, then took a multimeter to >determine that it's the switch itself that's broken. Cosmetically it >looks ok, but it doesn't work. It's just one of the address/data >switches, all other switches work fine. Are there any replacements for >these switches to be found? > >Camiel.

13 years, 8 months

Does anybody have the CD for this book

by microcode＠zoho.com

I just bought a copy of Computer Organization and Design, Third Edition: The Hardware/Software Interface, Third Edition (The Morgan Kaufmann Series in Computer Architecture and Design) Quality: Used - Very Good And it is in nice condition but missing the CD which is a bummer since the Appendices are not printed in the book itself but are all contained in the CD. Does anybody happen to have a copy of this I could ftp or download somehow? Thank you.

13 years, 8 months

Fw: Does anybody have the CD for this book

by microcode＠zoho.com

Responding to myself... The bookseller, Thriftbooks, just notified me another copy of the book including the CD will be mailed out shortly, at no cost. Good seller!

13 years, 8 months

cctalk Digest, Vol 107, Issue 68

by saquinn624＠aol.com

Rich end of AOLMsgPart_0_1ad99453-4a48-41fb-9c5f-7c3bef00fa23 ard noted: In article <CAA3rs2022A1OMd4PHTRc40Y1bW53Jc3ZJKc3h2AwTbf4JKw71Q at mail.gmail.com>, Adrian Stoness <tdk.knight at gmail.com> writes: > they would find a way to focre u to upgrade to a windows 8 machean Bullshit. I'm not saying they will, but based on their current logic the conversation could go along these lines: "OK, you have a machine that shipped with a valid OEM license for DOS 3.30. Did you get the original media with that? No? Well, for a valid license transfer to occur you need to get the original media. If they were destroyed, unreadable or not given to you then the license was not validly transferred, and you would need to reacquire a license. We no longer sell these licenses, but you may be able to find someone with validly licensed Retail MS-DOS software for sale." My guess is that they probably won't care unless you ask them (most companies wouldn't care in this circumstance), but then again sometimes they do - or somebody in legal decides they need to justify their job's existence. MS is getting very creative with limiting the newer-not-relevant copies of Windows, though my guess is that this is to give them an out if someone calls complaining that their copy won't activate.

13 years, 8 months

cctalk Digest, Vol 107, Issue 66

by saquinn624＠aol.com

Dave end of AOLMsgPart_0_609026c9-93ed-4a79-957c-a4628556f71a said: They all came with MS-DOS so there shouldn't be any licence issues. Scott replies: Given the age I doubt that you'll run into problems, but do keep in mind that this is Microsoft. I'm pretty sure that they have a department tasked with inventing "license issues" whenever possible to increase revenue based on some of the things that have come out of there - they're pretty creative.

13 years, 8 months

VAX/VMS object file format?

by legalize＠xmission.com

I was reading this article on Microsoft PE file format, <http://msdn.microsoft.com/en-us/magazine/bb985992.aspx>, and it mentions that the PE file format is a derivative of COFF from VAX/VMS. Wikipedia's entry for COFF mentions a System V unix heritage along with Windows, but doesn't mention VAX/VMS anywhere: <http://en.wikipedia.org/wiki/COFF> Given that NT is heavily influenced by VMS via Dave Cutler, it doesn't surprise me that COFF also has a VMS heritage. Can anyone comment on this? A little quick googling for "VMS executable file format" didn't yield any enlightenment. -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

13 years, 8 months

In Mountainview, CA tuesday/wednesday

by dgriffi＠cs.csubak.edu

I'll be in Mountainview, CA Tueday and Wednesday (July 31, August 1) for an interview at NASA. Anyone want to meet up and talk about stuff? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

13 years, 8 months

S-100 8088 CPU board PCBs have arrived!

by LYNCHAJ＠yahoo.com

Hi! Good news! The S-100 8088 CPU board PCBs arrived! They are $20 each plus $3 shipping in the US and $6 elsewhere. Please send a PayPal to LYNCHAJ at YAHOO.COM and I will send your boards right away! Thanks and have a nice day! Andrew Lynch PS, There are some S-100 backplane PCBs and S-100 Serial IO board PCBs in case anyone needs them. Thanks!

13 years, 8 months

NRI 832 Clock Not Working

by jonas＠otter.se

On Fri, 27 Jul 2012 20:33:39 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: > > I think I've mentioend this before, but both torque and work have the > dimensions of force * distance (e.g. Newtons * metres). But while it is > correct to say that a newton metre of work is a joule, it is incorrect to > do the same for torque. What is the fundamental difference? > > -tony > The metre in torque is the length of the moment arm, and mere torque cannot be work since it is a static quantity and corresponds to the force in work. To get work from torque you have to multiply by radians, the angle of rotation over which the torque is applied. Similarly, power, being work per unit of time, from a motor-car engine is proportional to torque * rpm. Not very clearly expressed :-( but you get the idea I hope. /Jonas

13 years, 8 months

H7202KA power supply

by iamcamiel＠gmail.com

Hi Guys, I managed to get the two DEC cabinets into the attic. Turned out I could just handle them by myself, without removing any rivets (emphasis on "just" as in "barely"). I've now got some of the Unibus PDP's in my hobby room (a /05, a /24 and a /84), so I figured I'd start with the latest model of the three.The 11/84 has a H7202KA power supply (H7200 + H7211 + H7213). All voltages look ok with a multimeter, but on my scope, the +5V VBB supply looks like a sick puppy. It looks like a sawtooth, with a period of 170 msec (ca. 6 Hz), and an amplitude of about 400 mV. Add to this a peak of 300 mV for 30 msec at the beginning, and a spike of -500 mV at the end, and there's a peak-to-peak difference of 1.2 volts. There's also some random spikes. In the end, the waveform looks like this: 5.5v -> |-_ |-_ | | | | | |__ | |__ | --__ | | --_| 5.0v -> | --|_ | --__ | | --__ | --__ | | --__ | | --__ | | || | || 4.5v -> / |/ |/ | | |----------------------| 170 msec The measurements were taken with the power distribution board and minimum load module plugged in; I don't want to plug any other modules in while the power looks like this. Is there any documentation available on this power supply? Or, does anyone have an idea as to what's going on here? The 6 Hz frequency strikes me as odd... Cheers, Camiel.

13 years, 8 months

Emulex QD21 firmware

by shadoooo＠gmail.com

Hello. I have a QD21 too, and it would be very nice to receive an image of the latest J ROM. Could it be possible? Thanks Andrea

13 years, 8 months

free 30+ years collection of ham radio electronics components

by onqry-query＠yahoo.com

Hi All, I know this issue well. ?We are getting ready to sell the house and move so the collection is being readied for local sales. I've personally been collecting since 1982 when the IBM PC started replacing earlier computers in shops and homes. ?I found I could now pick up the systems that before I could not afford. ?I never tried to get them all, just the ones I really liked and some are even NOS. These are a lot heavier than I remembered! ? ? Regards, --Bill ________________________________ For Spammers:?Fight Spam! Click Here!

13 years, 8 months

TU58 emulator

by cube1＠charter.net

I agree, but only because RL's and an 11/23 are pretty light. Change that to an 11/34 in a 10.5 inch box and a couple of rk05's and, over the years, things might sag over time - the posited fat people would not be sitting there day after day all day long. The analogy I usually think of is a water bed in an older house. The extra plywood helps, and is may also be helpful to have heavy systems along a side, rather than in the middle of the floor. Since I am not a structural engineer or anything like that, I guess it might depend on the spacing of the joists and the subfloor construction, and, on the sides, what kind of loads the walls are designed to bear. (In my case, my collection is on my basement concrete floor, and most of it is along the sides.) mcguire at neurotica.com wrote: > > You are not even remotely in dangerous territory here. > > For some perspective, think of a sofa with "feet", with two or three fat people on it. > > -Dave > >-- >Dave McGuire, AK4HZ >New Kensington, PA > > >On Jul 28, 2012, at 4:51 PM, Earl Evans <earl at retrobits.com> wrote: > >>> This conversation has started to worry me about the PDP-11/23 system in my >> daylight basement/family room. It's the largest single room in our home, >> and on the bottom of three floors. It is a wooden floor, with (large) >> crawl space underneath. >> >> The configuration is a PDP-11/23 in a BA23 chassis, 2 RL02 drives, and the >> standard DEC rackmount cabinet (which is pretty heavy itself). The entire >> cabinet has been placed on a 2 foot by 4 foot piece of half-inch plywood to >> evenly distribute the load. It is located near one of the load-bearing >> external walls of the home. >> >> RL02 drives weigh 75 lbs by themselves. Does anyone have a rough guess on >> what the total weight is for the system I described, and whether or not >> this would be safe for residential basement wood flooring? I realize there >> are a lot of factors - I'm just trying to get a wild guess before I start >> getting panicked. >> >> Thanks, >> >> - Earl >

13 years, 8 months

TU58 emulator

by cube1＠charter.net

One thing you should also consider is the weight loading you are going to put on your attic, and how it is distributed, less your ceiling sag over time. Camiel Vanderhoeven <iamcamiel at gmail.com> wrote: >Hi Everyone, > >I'm thinking of a way to move as many of the PDP11 systems I have into >my attic office to a) get them going, and then b) run them >occasionally. > >I've stripped the two low corporate racks to the chassis, and if I can >find a helping hand, I'm sure I can get them into the attic, then put >the tabletop of my electronics workbench on top of it (I'm a little >short on space). I'm thinking of bolting two pieces of rack profile to >one side of each rack, which would turn them into a single unit >comprising three racks. That way, I should be able to mount 6 10.5" >PDP's and 6 5.25" PDP's, and have them conveniently close to my >oscilloscope and logic analyzer to work on them. > >Now for storage... > >I have some RL02 drives, but I'm a bit reluctant to drag those >upstairs. I have Emulex scsi controllers for three of the PDP's (2 x >UC18, 1 x UC08), but the rest is without mass storage. > >I read about the TU58 emulator that runs on Linux, and I'm thinking of >putting a DECserver into the rack with the PDP11's, and use virtual >TTY's on a Linux box that connect to the PDP11's over the DECserver, >then run multiple instances of the emulator so each PDP has one or >more emulated TU58's. > >I know the "real" TU58 tapes can hold something like 256K of data. Are >the operating systems aware of this limit, or could you get by with >emulating a larger tape? > >Thanks for any insight you may have to offer. Warnings like "That's a >really bad idea, because..." are also very welcome. > >Cheers, > >Camiel

13 years, 9 months

free 30+ years collection of ham radio electronics components

by rdawson16＠hotmail.com

Im sure he wont mind if you email direct so I present Duane: Location is Minneapolis, and it all needs to go this weekend, he is retiring and selling the house: duane at icsi-us.com Randy

13 years, 9 months

Commodore C286-LT

by reiche＠ls-al.eu

Hi guys, Wanting to run the older Unices, I hunted around for a working 286. I sort of succeeded, except for the part that the sealant from the original Connor harddisk probably didn't get enough air where the laptop was situated for the past ten years and had gone fluid. Messy. Got me another harddisk, also an old Connor, not sure if it works but can't seem to find anything like a working DOS floppy with a FDISK.EXE which allows the removal of non-DOS partitions. A guy at work had a working copy of Partition Magic on floppy, but it seems to have a heavy case of floppy rot so it won't boot. So I was wondering, anyone have a floppy .img which I can rawrite or dd to a floppy to see if I can partition the old Conner or another 2,5" disk proper, so I can at least install MS-DOS onto it and maybe some old Unices later on? Thanks in advance and re, Sander

13 years, 9 months

cctalk Digest, Vol 107, Issue 64

by elson＠pico-systems.com

Date: Sat, 28 Jul 2012 03:50:18 -0400 From: Paul Anderson <wackyvorlon at me.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: RSX-11/M and FORTRAN Message-ID: <28A40D7C-F30F-48CF-A06E-F3A1EBFCBF3C at me.com> Content-Type: text/plain; CHARSET=US-ASCII I've developed the itch to play with RSX-11/M, so I've setup simh using these instructions: http://home.earthlink.net/~n1be/pdp11/PDP11.html So far, so good. I've got it up and running. The problem is in trying to run fortran. There's a FOR.OLB in db0:[11,41]. When I try to run for, I get TASK NOT FOUND. When I run ins $for to load it, it reports not being to find the file. Being a total newbie at this, I'm not sure how to get it to run. Any ideas? As Jay says, .olb is the object library, which gets linked in with your compiled code to supply the fortran-specific library functions. There should be a FOR.EXE, I think, for the compiler. It's been a while since I ran RSX11/M. A LONG while, like 30 years! Jon

13 years, 9 months

NRI 832 Clock Not Working

by wackyvorlon＠me.com

I'm currently working on restoring a NRI 832 computer trainer. I finally got my oscilloscope on it. It looks like the clock isn't running. You can see the waveform in this video. I tried both the fast(250kHz) and slow(2Hz) clock. I'm just seeing noise from the power supply. http://www.youtube.com/watch?v=RBV4QgQHq98 Sent from my iPhone

13 years, 9 months

Emulex QD21 firmware

by brad＠heeltoe.com

I have two QD21's - one says rev F and the other says rev G, but both have E65G markings on the eeprom. I will plug them both in and verify shortly, but I would guess that means they are both G. Can I just use the rev J firmware instead? I assume J is 'better' than G... -brad -------- Original Message -------- Subject: Re: Emulex QD21 firmware From: Glen Slick <glen.slick at gmail.com> Date: Mon, June 25, 2012 9:25 pm To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> I have the following versions of firmware EPROMs for the Emulex QD21: E65C - 16KB E65G - 32KB E65J - 32KB There no text strings in the Rev C firmware and no on board Firmware-Resident Diagnostic. The Rev G firmware has the following on board main menu: Emulex Corporation Copyright All rights reserved QD21 controller, firmware revision level IP address = Option menu 1 - Format 2 - Format and verify 3 - Verify 4 - Read only test 5 - Data reliability test 6 - List known units 7 - Replace block 8 - Display Novram 9 - Edit / Load Novram Enter option number: The Rev J firmware has the following on board main menu: Firmware-Resident Diagnostic Copyright (c) 1988 Emulex Corporation all rights reserved QD21 controller, firmware revision level IP address = Option menu 1 - Self Test Loop 2 - Format 3 - Verify 4 - Format and Verify 5 - Data Reliability Test 6 - Format, Verify, and Data Reliability Test 7 - Read Only Test 8 - List Known Units 9 - Replace Block 10 - Print RCT 11 - Display Novram 12 - Edit / Load Novram Enter option number:

13 years, 9 months

B&C microsystems UP200 software

by clabond1＠tin.it

I am in need of software for the UP200 programmer. LMK if you have it and could send me a copy via email. Just picked up a unit and want to get programming. Grazie

13 years, 9 months

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