test-drb August 2001

test-drb@ccmp.vtda.org

295 participants
726 discussions

by mcguire＠neurotica.com

On August 3, Merle K. Peirce wrote: > We just rescued a Cray J90 from the Washington, DC area. A Vicom came > along with it. I'm quite shocked that I didn't hear about this machine. -Dave -- Dave McGuire Laurel, MD

22 years, 10 months

Datasystems Design Board + RX33 floppies

by CAA007216＠mail.ono.es

> Sergio, Hi again ! > I have a similar DSD board and drive, the drives are seen as 2 RX02's. > You need the box with the drives as well, as it also contains some > logic. I > am not > aware of any possebility that an original RX02 will work with the DSD > interface or > will RX33 ones do. :-( Is there anybody out there (mainly in Europe) that could send or purchase me one of this DSD monsters ? Thanks, Ed. Sergio

22 years, 10 months

DILOG DQ-614

by CAA007216＠mail.ono.es

> Sergio, Hello ! > You can have up to 4 drives per controller, and up to 2 > controllers per > system. Ok. This is good. > BTW, RD5x drives are usually seen as DU devices, not as DL ones. Mmmm... This board treats one Mfm Hard Disk attached to it like up to four DL drives, from DL0 to DL3. The drive must be partitioned with one partition by drive emulated. That is what can be deducted reading the (poor) info that could be located in the Internet. We speak about one RD52. I suppose it could be divided in three DLx emulated drives. Thanks for the answer, Ed. Sergio

22 years, 10 months

Length of Cables for ESDI Hard Disk Drives

by jhfine＠idirect.com

I have had a problem with some of my ESDI disk drives for a number of years which may have a very simple solution. When I use the drives in a BA123 box with an 11/73, the system functions correctly while I am using 7 quad boards or less. Whenever I add the extra boards, the READ operations on the Hitachi ESDI DK515-78 disk drives (Sigma RQD11-EC quad ESDI controller) take about twice as long. The WRITE operations are still just as fast. I have been looking at the problem again recently and while it has not yet been resolved, I now begin to suspect that the cables between the RQD11-EC controller and the drives may be too long. Just a guess is that the total length of the 34-pin cable is six feet (with the first portion to the first header being four feet and three more pieces of eight inches making a total of six feet to the last header) and the 20-pin cables (there are four with three currently in use) are about four feet each. In addition, the three ESDI drives currently in use run off their own PC power supply (in fact it is the actual power supply that came with the drives within a large raid set-up to be used with a VAX). I also salvaged the fans inside the box and each drive has its own fan. Normally, I only turn on one ESDI drive when the other ESDI drives are not being used for backup purposes. In addition, I have installed a heavy ground cable between the PC power supply and the BA123 box. In case anyone asks, the last drive on the 34-pin cable is correctly terminated and the other drives are not terminated. Since everything runs VERY well in the BA123 with the DK515-78 drives while I use seven or less quad boards, I have not tried to investigate much until recently since the extra boards are used so rarely it has not been a problem 99% of the time. And the fact that everything works so well has not led me to suspect the length of the 34-pin/20-pin cables. Does anyone have any suggested maximum cable lengths? Sincerely yours, Jerome Fine

22 years, 10 months

SunOS (er... Solaris)

by pete＠dunnington.u-net.com

On Aug 3, 14:28, Zane H. Healy wrote: > Pete wrote: > > Is Solaris 7 still available anywhere? My CDs seem to have gone walkabout, > > and it doesn't seem to be online anymore. > I don't believe Solaris 7 was ever available online, there was the $20 > hobbyist kit, which is kind of lame. Maybe it was 2.6 that was online, then? I don't remember; I did get what I think you're referring to as the hobbyist kit, though it didn't cost me $20 (it was a slightly different deal in the UK). I don't remember the details, but wasn't one version available for a short while to academic users (University staff) in source form? -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

VAX 11/785 as a workstation :-)

by gunther＠aurora.regenstrief.org

Last night I was browsing the UNIBUS/PDP-11 field guide on the Web before I went to sleep. Then I dreamed of a VAX 11/785 with an UNIBUS extension cabinet full of cards. Included was a 3, 4, 5, or so card-set that together comprises a video interface. Hook up a composite monitor or RGB monitor and there you have it: A VAX 11/785 as a workstation! Write a driver for X11R6 for it and off we go. Has anybody ever seen those UNIBUS video monitor adapter sets? I suppose they were meant for PDP-11s, but I think running them with a VAX would be way cooler. Might not be possible, and certainly would involve some serious fiddling. But in a machine that has 10 or more cards for just the CPU, a 4 board video adapter would be the appropriate thing, wouldn't it? :-) cheers, -Gunther

22 years, 10 months

SunOS (er... Solaris)

by pete＠dunnington.u-net.com

On Aug 3, 12:30, Chris Kennedy wrote: > Um, I've got a bunch of old 2.7 media. Let me know what > architecture you need and I'll either stuff the ISOs somewhere > for you to fetch or simply burn copies and ship them off to you. > -----Original Message----- > Is Solaris 7 still available anywhere? My CDs seem to have gone walkabout, > and it doesn't seem to be online anymore. > -- > Pete Peter Turnbull Thanks very much, Chris. I'll email you privately to work out the best way to do this. -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

SunOS (er... Solaris)

by healyzh＠aracnet.com

> Is Solaris 7 still available anywhere? My CDs seem to have gone walkabout, > and it doesn't seem to be online anymore. > > Pete Peter Turnbull I don't believe Solaris 7 was ever available online, there was the $20 hobbyist kit, which is kind of lame. Your best bet would probably be eBay, BUT, I assume that's not really an option in your case. Zane

22 years, 10 months

My other computer is a Cray!

by mcguire＠neurotica.com

On August 3, Francis. Javier Mesa wrote: > from Cupertino? The machine was bought in the 80s (before Jobs left > obviously) thus again it can not be an EL, since that line was introduced > in the early nineties I seem to remember. I wonder if Apple still have 1991. > their cray around, my friend told me that it was visible from the lobby of > one of the buildings.... jobs seemed to like it because it looked so cool A neighbor of mine worked for both Cray Research and Apple. He may know someone who can check. I will ask him. > think Jobs has ever produced an ugly computer..... although he reached his > pinnacle with NeXT darn those were cool looking computers!) Hell, I think they're STILL cool looking computers! -Dave -- Dave McGuire Laurel, MD

22 years, 10 months

PDP-11/23 PLUS commercial instruction set (CIS)

by pete＠dunnington.u-net.com

On Aug 3, 8:30, Sergio Pedraja Cabo wrote: > > Hello. Anybody knows of somebody that could sell or obtain > the two CIS (commercial instruction set) chips > for one PDP-11/23 PLUS ? I have the Floating Point option installed > and I'd like to has this option too. In my experience, they're relatively rare. I've been actively looking for a set for ages, and the last "spare" set I came across was about six years ago -- and someone beat me to it :-( -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

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test-drb August 2001