test-drb April 2001

test-drb@ccmp.vtda.org

251 participants
669 discussions

by broth＠heathers.stdio.com

Has anyone ever heard of a DEC NICSA console board? It was part of a backplane with two protocol translation boards, a 1 meg MS-11, 11/24 CPU, and a DEUNA. Brian. -- Brian Roth - System Administrator www.webwirz.com - Old Computer Repository Preoccupation is my main occupation.....

24 years, 7 months

DEC (Minc 11?) RX01 disks and PUTR

by ajp166＠bellatlantic.net

From: Don Maslin <donm(a)cts.com> >The DD part sounds rather like what Altos used on their 8" DD disks, >and which no PC FDC that I know of can read. I doubt that they did >the SD header part though. Have to fire up my Sierra (Altos clone) >and see if it can read the RX02 stuff - or at least look at it with DU. I bet the altos can't. The mixed density format is something only DEC did. Intel also used M2FM (rather than MFM) for double density for the 2xx series development systems. it was also incompatable with everything and used 3000 series bit slice. Allison

24 years, 7 months

VAX 6000 3-phase conversion (was: Re: Three Phase)

by cdl＠mpl.ucsd.edu

> Date: Fri, 20 Apr 2001 15:31:36 +0000 > From: Gunther Schadow <gunther(a)aurora.regenstrief.org> > To: Sridhar Ayengar <sridhar(a)ikickass.org> > CC: port-vax(a)netbsd.org, classiccmp(a)classiccmp.org > Subject: VAX 6000 3-phase conversion (was: Re: Three Phase) > > > Let's look at the plan again: > > > ____________________ +300V > | | | > -__ -__ -__ thyristors > ^ ^ ^ > | | | > L1 ------* | | > L2 -----------* | > L3 ----------------* > | | | > - - - diodes > ^ ^ ^ > | | | > --------------------- Return > > > ---- FOR 220 V SINGLE PHASE ----------------------------------------- > > With a 220 V single phase power supply (P and N coming out of your > receptacle,) as in Europe, Australia, India (?), etc. all you would > need to do is, e.g., put P on L1 and N on L2. That gives 220 V ~ > input and if this sqrt(2) rule is correct (which I'm still a little > confused about) you get 220V * 1.414 = 311.8 DC, i.e., just right. > > ---- FOR US 2 x 110 V TWO PHASE ------------------------------------- > > For the US I am thinking that may be the 2 phase 220 V dryer hookup > is the best way to go. Not only is this line at a convenient location > where you can store a big cabinet like this one, it is also well > dimensioned to sustain a VAX or (and may be AND) your dryer. Otherwise, > just dry your clothes on a line. But do not mistake the VAX's blower > with your front-loading washer :-). > > Seriously, the two phases here, as I understand it, are: > > ------- P1 > ------- N > ------- P2 > > with U peek = 110 V and the phases of P1 and P2 being displaced by > 180 degree. So, if you measure U between P1 and P2 you get 2 x 110 V > = 220 V. So, I would then connect it like this: This is really 220v single phase. And the 110 refers to the nominal RMS voltage. Nearer to 120 these days. The peak voltage is, of course about 1.4x the RMS. > > ____________________ +300V > | | | > -__ -__ -__ thyristors > ^ ^ ^ > | | | > P1 -L1 -----* | | > (N)-L2 ----------* | > P2 -L3 ---------------* > | | | > - - - diodes > ^ ^ ^ > | | | > --------------------- Return > > I am not sure whether to use N on L2 or leave N open (again, I > notice how much I forgot about my high school physics.) This actally > bugs me, because I don't know quite where to connect to the ground > potential and how to deal with the protective ground here. I would strongly advocate leaving one of the three inputs (L1, L2, L3) open, and connect the other two to P1 and P2. This makes a full-wave controlled bridge rectifier across the "220" line. The peak voltage (hence the no-load DC output) would be 220 sqrt(2), about 340V. The DC output is floating with respect to protective ground, but will be isolated by the transformer in the switching supply that runs from the nominal 300V. carl (amateur electrician) -- carl lowenstein marine physical lab u.c. san diego {decvax|ucbvax} !ucsd!mpl!cdl cdl(a)mpl.ucsd.edu clowenstein(a)ucsd.edu

24 years, 7 months

FS: IBM 6157 external tape drive and heaps of tapes - System/36??

by rhblake＠bigfoot.com

I have just come across an external tape drive that appears to be in good shape with a huge box of DC-300 tapes, 60 of them. All appear to be used, all but a few are in plastic cases. It all looks to be in good shape and the tapes came in a box marked "System 36 tapes" and to the best of my recollection that's what the tape drive goes to. Any offers? The drive is light but the tapes probably weigh 40 lbs. I'd ship it by UPS gorund so it's cheaper. At present I'd prefer to stay with shipping in the US. Drop me a note direct to rhblake(a)bigfoot.com

24 years, 7 months

What's a Mag Card II?

by Innfogra＠aol.com

In a message dated 4/20/01 8:43:14 PM Pacific Daylight Time, fernande(a)internet1.net writes: > What is it? I doubt they'll ever sell it, as they have it at $59!! Far to high a price. It is an IBM Selectric electromechanical typewriter attached to magnetic card read/writer for storage. Proprietary IBM chips. Paxton

24 years, 7 months

fairly OT, but y'all may be able to help me :)

by ajp166＠bellatlantic.net

From: Geoff Reed <geoffr(a)zipcon.net> >I need to test a device that uses sensors that send back a signal using a >0-20MA current. anyone know of a source of a schematic to make something to >generate such in 1 ma increnemts? or have any tips??? Are you sure that those are not 4-20ma sensors? if so that is an industrial standard for remote analog sensors and there are devices that will translate the 4-20ma to a digital (even scaled if needed) signal either parallel or serial interfaced. Allison

24 years, 7 months

What's a Mag Card II?

by fernande＠internet1.net

Hello all, Today I stopped by Goodwill on my way home. I saw a rather odd piece of IBM equipment. It looks like a large black IBM typewriter connected to a large black box by a heavy cable. It is labeled "Mag Card II". What is it? I doubt they'll ever sell it, as they have it at $59!! Chad Fernandez Michigan, USA

24 years, 7 months

HP 98730 DaVinci Framebuffer ?

by xds_sigma7＠hotmail.com

A good amount of the manuals are still available from HP Parts surfer, can't remember address, if you can't find it let me know and I'll post it.. Similarly, if you can't order from it, I happen to work at a license HP reseller/repair place.. Will J _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

24 years, 7 months

Need help on DEC cards & drives

by Innfogra＠aol.com

Hi; I need some help IDing some DEC cards; What is a PMAG-E & a PMAD A used on? How can I identify the quantity of VRAM on the PMAG-E? What is the small memory card on the same? All the slots are full. How big is a RF35-EA drive? RZ25, RZ26 & RZ28? How much memory on a M7622-AV, a M7622-AP and a DataRam 63015 (180010002)? These are in the VAX 4000/200. How do you open the case on the 4000 to see if it has any drives? I got the front panel open. Is an Emulex QD2110202 a Qbus ESDI or MFM drive controller? What is a Microtech MT CIQBA+? How much ram does a M7608 BS have What is an AH-132-06? 6 wide card, prob. Unibus. One is marked CPU Nissho. What is DEC MS02-AA memory used on and what size are they? Thanks for all help. If anyone is interested in purchasing any of this please contact me offline at whoagiii(a)aol.com. I will ship overseas. Paxton Portland, OR PS Also available is an MT external case with an Exabyte 8200 tape in it, a couple SZ 12X (an LA & an EA) Drive cases for 3100s, a Todd SCSI 1 CD tower with 4 Hitachi CDs (came in with the DEC) and a storage works drive tower with no sleds or drives.

24 years, 7 months

xerox memorywriter 620 FOR FREE OR AUCTION DEPENDING ON RESPONSE

by halarewich＠look.ca

Hi all: I have one Xerox Memorywriter typwriter / word processor to give away for the cost of shipping or if there is more than one person interested I will do a mini auction the memorywriter is in working order no manual but comes with traning manual for 620 series (original from xerox) Also have a ZDS (zenith data systems) Monochrome video monitor if anyone is interested the specs on the monitor are: model ZVM-1230-A green screen (P-31 phosphor) 110-volt, controls horizontil hold, width, verticl hight, contrast, brightness , on/off switch. CRT size and type 12" etched non glare dark tint. Video input monochrome ntsc cpmposite rca jack. Bandwith 15MHz rise time 23 nanoseconds. weight 13 lbs monitor also comes with owners manual If anyone is interested in any of the above items please let me know. for referance I live in Castlegar B.C., Canada V1N 1J5 thanx again Chris Halarewich -- # Netscape POP3 State File # This is a generated file! Do not edit.

24 years, 7 months

BCD accuracy (was: HP 85/Rocky Mountain BASIC replacement)

by ajp166＠bellatlantic.net

From: Jim Battle <frustum(a)pacbell.net> >Unless you are doing financial work where the fractional numbers tend to be >inherently decimal, BCD arithmetic, for a given number of bytes of storage, >is less accurate than binary. As a BCD byte can represent only 100 states >vs 256 for binary, you are going to lose more than one bit of accuracy per Sinppage.... Never confuse accuracy with resolution or range. Most BCD systems were less prone to truncation, rounding and other cumulative errors within their range. Binary for the number of bits gave more resolution but sometimes at the expense of accuracy. >So, OK, 0.1 (base 10) can't be exactly represented in a binary format, but >0.11111 (base 16) can't be represented exactly in an 8B BCD representation. If you meant .1 and got .11111 that would be a significant error! same for say meaning .1 and getting .09999. Allison

24 years, 7 months

Odd old Xerox equipment

by Innfogra＠aol.com

In a message dated 4/20/01 10:24:45 PM Pacific Daylight Time, Innfogra(a)aol.com writes: > > This sounds like a Xerox 6085 although I don't remember the case being black, > > more like a dark brown IIRC. If so it is the second generation Star machine, > > I can't remember its name right now (Daybreak? someone will correct if I am > wrong). > Boy, sorry for the bad form, answering my own mail. The 6085 is a Dove, not a Daybreak. Here is a great link by a listmember on identifying odd Xerox equipment. <A HREF="http://home.eznet.net/~heiny/mesa/ident.html">Xerox Workstation Spotter's Guide</A> Paxton Portland, OR

24 years, 7 months

Odd old Xerox equipment

by Innfogra＠aol.com

In a message dated 4/20/01 6:11:54 PM Pacific Daylight Time, optimus(a)canit.se writes: > was a black, rather fat tower with a very black front with relief stripes. On > top of it sat an equally black diskdrive, its front as black the computer. I > think it would fold down to reveal the actual slot. The back featured a > number > of very large blanking plates for graphics (I think a D15) and AUI. > What kind of system was it, when was it released, what OS did it run? Can I > marry it? This sounds like a Xerox 6085 although I don't remember the case being black, more like a dark brown IIRC. If so it is the second generation Star machine, I can't remember its name right now (Daybreak? someone will correct if I am wrong). Needs it's own monitor, keyboard and mouse. Look around for those. Highly collectable. Get it if you can. If you are close to Portland I would be interested. I miss getting rid of the ones I had. Runs a Xerox operating system called Viewpoint. Look for Version 2.0. I think I have it somewhere in storage. Good luck, Fun system. You can marry it. Paxton Portland, OR

24 years, 7 months

DEC Infoserver 100/150

by ajp166＠bellatlantic.net

From: Eric Dittman <dittman(a)dittman.net> >> These things are from the days when CD drives were expensive, basically. >> You could put any external scsi device on them (I think even tape drives) >> but we used them for CDROM distribution at the university where I dealt with >> them. > >Not just because CD drives were expensive, but also because >for certain VMS systems there just wasn't an easy way to >hook up a CD drive (depending on the bus and storage options). True but the first reason given is the one that was DEC designed. At the time the Infoserver was flown a Cdreader was 1200-1800$ for a 1x! and it was thought a group could effectively share a library of them. In the late 80s early ninties that was very true. Allison

24 years, 7 months

DEC (Minc 11?) RX01 disks and PUTR

by ajp166＠bellatlantic.net

From: Don Maslin <donm(a)cts.com> >> I bet the altos can't. The mixed density format is something only DEC >> did. > >Agreed, but I might be able to read sector content using DU. Nope, it's m2fm not mfm double density. Very different encoding and timing and none of the WD/NEC/Intel chips do it. Thats the part that makes it hard. Allison

24 years, 7 months

DEC Infoserver 100/150

by dittman＠dittman.net

Does anyone have a spare Infoserver 100/150 for sale? -- Eric Dittman dittman(a)dittman.net

24 years, 7 months

migrating from X.25 into IP based

by Galih.Chandra＠ag-it.com

dear all, I want to ask about migrating X.25 into IP based network... I try to migrate the protocol for a banking application in zero downtime... is there any way that I could do it ? or perhaps is there any workaround for it ??? using extra device ??? thanks in advance. regards.

24 years, 7 months

Zenith CPM-80 manuals????

by rigdonj＠intellistar.net

I bought a huge pile of manuals today. (Including LOTS of HP manuals :-) Two of the manuals are marked Heath Zenith and they contain unretouched copies of Digital Research's various CPM-80 version 2.2.04 manuals. Only the outer cover pages of the manuals have been changed. They are now black with white and grey lettering and Heath/Zenith's name on them. Some of the manuals are still in their original shrink wrap! There are also two original hard sectored 5 1/4" floppy disks in the back of one manual. The binders are also black with white and grey lettering. Does anyone know what system these are for? Unlike the Z-100 manuals these are completely generic. There's no mention of what system they're intended for. Joe

24 years, 7 months

DEC (Minc 11?) RX01 disks and PUTR

by donm＠cts.com

I have been asked to see if I can transfer the contents of some 8" disks to PC compatible disks. A CP/M disk has offered no challenge, but I am stopped dead on a disk whose label indicates that it was for use on a DEC Minc 11. Using PUTR, I have tried mounting the disk as /RX01 and /RT11, /FOREIGN, and even /OS8 at separate times. However, whenever I invoke the COPY/DEVICE command it selects the disk and errors out with the message 'Sector not found reading drive H' 'Abort, Retry, Fail?'. Using AnaDisk, I am able to determine that there are 26x128 byte sectors per track, but with a data error message for each sector. Considering some of DEC's strange format characteristics I am not too surprised that AnaDisk has a problem with it. But PUTR's problems do surprise me. Another disk gives exactly the same result. It is certainly possible that the disk is simply bad, but could there possibly be some other operating system format that is also 26x128 but does not respond to PUTR and the options that I have tried. Thanks for any hints that you can offer. - don

24 years, 7 months

Longest running user group in history?

by r.stek＠snet.net

The Connecticut Computer Club has been meeting monthly (except July & August) since 1976 (and maybe '75 - I was up in Saskatchewan until '82). Steve Ciarcia started it and we met at a local library until about 1983. Since then we turned it into a dinner meeting (everywhere from Denny's and all-you-can-eat places to nice steak houses and Italian restaurants). When Steve was an editor at BYTE, he usally brought a current project and was always looking for ideas for his monthly projects (I led the HAL-4 brainwave biofeedback unit design group), but everyone participates in various and sundry ways. It's much more a hardware group with several engineers from Prattt & Whitney and other local engineering shops. But, and most importantly as acknowledged by everyone, it's almost always a good meal! <g> Bob Stek Saver of Lost Sols BTW, Steve thinks I'm nuts for spending so much time on the 8 bitters!

24 years, 7 months

DEC (Minc 11?) RX01 disks and PUTR

by ajp166＠bellatlantic.net

From: Don Maslin <donm(a)cts.com> > >May I assume that the RX02 drives, per se, are not the cause of the >read problem, but rather it is the floppy controller? This would seem >reasonable since the RX02s can reputedly read RX01 diskettes. RX02 is a custom format that only DEC did (or DEC compatable) and it's single density header, 256byte double density (m2fm) >from a 2901 based microcontroller. Soooo, it is caused byt the RX02! FYI the RX02 can read RX01 but RX01 cannot read RX02 unless the RX02 formatted the media as RX01. RX02 is DUAL density whereas the RX01 is single. Allison

24 years, 7 months

DEC (Minc 11?) RX01 disks and PUTR

by ajp166＠bellatlantic.net

From: Don Maslin <donm(a)cts.com> > I have been asked to see if I can transfer the contents of some 8" > disks to PC compatible disks. A CP/M disk has offered no challenge, > but I am stopped dead on a disk whose label indicates that it was > for use on a DEC Minc 11. Are you sure they are RX01 (single density) and not RX02 (double density but m2fm)? The latter is not readable on anything nonDEC compatable. > Using AnaDisk, I am able to determine that there are 26x128 byte > sectors per track, but with a data error message for each sector. > Considering some of DEC's strange format characteristics I am not > too surprised that AnaDisk has a problem with it. But PUTR's > problems do surprise me. Another disk gives exactly the same result. > It is certainly possible that the disk is simply bad, but could there > possibly be some other operating system format that is also 26x128 > but does not respond to PUTR and the options that I have tried. the RX02 has SD header and DD data, NONE of the IC controllers can read that. > Thanks for any hints that you can offer. find a PDP-11 (MIC-11 is a PDP11 with lab interfaces). Allison

24 years, 7 months

HP 98730 DaVinci Framebuffer ?

by jarkko.teppo＠er-grp.com

Hello! Does anyone have any docs or information on a HP 98730 (TurboSRX?) framebuffer ? To make a long story short, I have one of those boxes and it's really usefull in showing it to normal PC users that "Oh, that's just a graphics card" (it's a HP minirack module, about 30cm high and weighs around 20 to 40 kg). It's a *real* framebuffer :-) The problem is that I have a DIO-I card 98720 (it's the same size as a normal DIO-II card but it doesn't have all the connectors) and it's connected via the LGB (Local Graphics Bus) to the 98730 but I can't get X working, neither in hp-ux or NetBSD. Normal ITE console works but graphics won't. So, do I need something else than the 98720 card ? I've only read about cards like VDMA (virtual DMA) and like. If someone can help me out here I'd really appreciate it.. -- jht

24 years, 7 months

DEC (Minc 11?) RX01 disks and PUTR

by ajp166＠bellatlantic.net

From: Don Maslin <donm(a)cts.com> >> If the disk is from a MINC-11, then it was almost definitly running RT-11. >> However, I suspect it was an RX02 drive that it was written in. > >Likely, however, the disk in question is punched as a `flippy' so it is >unlikely that it was written as as RX02. Rx02 was single sided so flippy is possible. the real test would be on a rx02! Allison

24 years, 7 months

OT: 25 SIGNS THAT YOU'VE Had TOO MUCH OF THE 90's AND 2000

by mcguire＠neurotica.com

On April 18, liste(a)artware.qc.ca wrote: > >> 22. You wake up at 2am to go to the bathroom and check your E-mail > >> on your way back to bed. > [Hangs head in shame] I've done this.... *sigh* Hell, I did this LAST NIGHT. And the night before... -Dave McGuire

24 years, 7 months

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test-drb April 2001