test-drb

test-drb@ccmp.vtda.org

101090 discussions

by tomas＠basun.net

People, I'm trying to wrap my head around cc:Mail version numbers. Various products such as Mobile and Gateways have their own separate series of numbers, but the main products seem to be as follows. Release Database Appeared in 1? ? ? 2? 6? ? 3? 6? ? 4? 6 ? 5 6 1995 6 8 1996 7? 8 ? 8 8 1997 I saw someplace that I cannot find now that DB6 is from 1989. Can anybody fill in the missing numbers? So for example, there is a package on Ebay right now https://www.ebay.com/itm/LOTUS-ccMAIL-in-original-box-diskettes-manuals-Win… that seems to say `Release 2.01' and 1993. How does that compute? /Tomas

4 years, 11 months

cctech Digest, Vol 76, Issue 20

by jonas＠otter.se

On 2021-01-20 19:00, "Ali" <cctalk at ibm51xx.net> wrote: > Message: 14 > Date: Wed, 20 Jan 2021 00:38:21 -0800 > From: "Ali" <cctalk at ibm51xx.net> > To: "'General Discussion: On-Topic and Off-Topic Posts'" > <cctalk at classiccmp.org> > Subject: RE: Looking for old Compaq software - COMPAQ System Manager > Facility > Message-ID: <00d501d6ef07$9cd2ab70$d6780250$@net> > Content-Type: text/plain; charset="us-ascii" > >> For a workaround: >> >> This way You get a fixed brightness and somewhat working computer. >> Now You can wait for a replacement pot and play with the computer. > So turns out the pot itself is good after further testing. Of course now the > question is why won't the brightness adjust on the machine? > > -Ali Something supposed to be connected to the pot is not connected anymore? I am guessing a) the connection to the wiper is broken somewhere, or the circuitry connected to it is broken, or b) the ground end of the pot has a broken connection to ground /Jonas

4 years, 11 months

David Gesswein's MFM emulator on the DEC Professional

by paulkoning＠comcast.net

I just completed a set of tests of David's MFM emulator on my Pro 380. Summary: everything works right. Very impressive device. My compliments to David for an amazing piece of engineering. Details: 1. I built and tested it (rev C board) per the instructions and all that worked nicely. A few minor points in the instructions, quickly clarified by David and already updated on the web page. I used an old 2 MB BeagleBone Black (the kind that was shipped some years ago with the abandoned Angstrom distribution), that fits just fine. 2. I read the three drives I have, one RD51, two RD52 (Quantum). All worked fine. They were identified by the analysis tool as "Elektronika_85" which makes sense since that's a Pro clone. 3. On the RD52, the last cylinder cannot be read. The reason is that the DEC standard formatting tool does not format the last cylinder except on the RD50. I'm not sure why; the comments say it is "reserved for the FCT" but I don't know what that is. In any case, ignore those errors; the OS does not use that cylinder so nothing bad happens. 4. In spite of what the XHomer documentation says, Pro disks have 16 sectors per track, not 17. It may well be that the drive is physically capable of holding 17 sectors per track if you have an RQDXn controller, but the Pro format is definitely 16 sectors. And 4:1 interleaved to account for the performance issues of programmed I/O rather than DMA. 5. I set up auto-start of emulation mode using one of the files created by the disk reader. That works fine, the OS boots, identifies the drive type correctly, and runs happily. 6. I also tested creating a new empty RD52 image (i.e., 512 cylinders, 8 heads), and running a P/OS 3.0 install to that emulated disk. That works also; as Chris Zach suggested, the installer includes a low level formatter tool and invokes that automatically when it detects it is needed. 7. Poweroff data saving works nicely. I can watch the BBB keep running after I turn Pro power off, then after 5-10 seconds the BBB power light also goes off. 8. I looked at the extracted data files created by step 2: they are good block level data images of the disks. A note on testing and drive copying: at first I tried to do this using a spare Pro power supply. That does not work because that supply requires a substantial minimum current. Even with a real drive plugged in alongside the emulator, the current draw is too small and the supply shuts down almost immediately. Instead, I temporarily connected an old small PC-type power supply I had lying around (rated at 50 watts according to the label); that was plenty for the emulator and also good enough to power it along with the drive to be read. paul

4 years, 11 months

Looking for old Compaq software - COMPAQ System Manager Facility

by matti.nummi＠hotmail.fi

For a workaround: 1. Solder any same size pot with suitable long wires to the location (if possible) 2. Adjust the brightness to Your liking 3. Remove the pot 4. Measure the resistance 5. Solder a measured value resistor where the pot was. This way You get a fixed brightness and somewhat working computer. Now You can wait for a replacement pot and play with the computer. BR Matti

4 years, 11 months

Looking for old Compaq software - COMPAQ System Manager Facility

by cctalk＠ibm51xx.net

Hello All, I am looking for an old piece of Compaq SW. It is used to communicate with a Server Manager/R (or sometimes also known as System Manager) board. This was Compaq's first attempt at a lights-out management (LOM) board. If anyone has a copy and can share I would appreciate it! Thank you. -Ali

4 years, 11 months

Looking for a potentiometer for restoration project

by cctalk＠ibm51xx.net

Hello All, I am looking for an EOL/no longer manufactured pot. It is a Clarostat CM46895-3 and used to adjust the back light/brightness on a Compaq Portable 486c (pictures are here: http://www.vcfed.org/forum/showthread.php?78057-Compa-Portable-486c-can-not- adjust-screen-brightness). Because of the fit and finish issues it needs to be this particular pot. If someone has one in their parts bin please drop me a line. TIA! -Ali

4 years, 11 months

DEC: securing 15V pwr monitor board in H765 supply

by fritzm＠fritzm.org

Hi all, I?m reassembling an H765 supply after cleaning and repairs. It has the "newer" style 15V and power monitoring board (the one with the edge finger connector, same as used in H7420 supplies.) The board slides into a slot in a sub-chassis that also houses the power control circuitry, which small chassis later slides into, and is secured to, the larger H7420 chassis. I cannot for the life of me figure out what, if anything, secures the power monitor board to the small chassis! There don?t appear to be any conveniently placed fixtures to which to screw down the board, and I haven?t been able to inform myself by pondering the various engineering diagrams, IPB?s, nor the pile of remaining fastening hardware... When I test-fit everything in the larger chassis, the unsecured board is held captive only by the grace of the surrounding wiring harness and by some small clearance issues with the large cap on the board. This doesn't seem satisfactory; as part of something like an 11/34 on tilt slides, it would seem to bang around a bit in there if left loose like that. Am I missing something? Puzzled... --FritzM.

4 years, 11 months

Quick journey to the basement

by cz＠alembic.crystel.com

Found more stuff. 4 Perq boards, the HP1000, a Perq mouse and "pad", a Sun4 keyboard with 15 pin plug, and another Perq2 keyboard. Also found a weird one, a MFM drive with an adapter board on the bottom. Is the below a MFM to Shugart interface? Pics are up on the Discord server right now along with the HP1000. C

4 years, 11 months

cctech Digest, Vol 76, Issue 16

by athornton＠gmail.com

I seem to recall that in "how to shoot yourself in the foot in various programming languages," APL is something like "There's a bang. Your foot is missing. You don't remember enough linear algebra to know how it got that way."

4 years, 12 months

HP 3000 37 CPU board needed

by g-wright＠att.net

As long as where on the hp 3000 board hunt,? I have a dead 3000-37 here that needs a CPU board.? any lurking out there? ??? - Jerry

4 years, 12 months

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