test-drb October 2001

test-drb@ccmp.vtda.org

259 participants
770 discussions

by acme_ent＠bellsouth.net

> I talked to Ken this afternoon. > He needs 3-4K to cover the back rent on the storage > and is looking for someone to take all this stuff and > sell it on eBay for him. He thinks it's worth $100000 Well, hey, if a CoCo is worth $2500 . . . Glen 0/0

22 years, 5 months

Looking for DECNA

by dittman＠dittman.net

I'm still looking for a DECNA for a Pro350/Pro380. I thought I'd ask again to see if anyone has an extra. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

22 years, 5 months

CPU design at the gate level

by ajp166＠bellatlantic.net

The fake for that using discretes is one transistor per emitter used with the bases and collectors as common. The other is diodes. The real problem is level shifting and the use of excess redundant transistors. Allison -----Original Message----- From: Greg Ewing <greg(a)cosc.canterbury.ac.nz> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Wednesday, October 31, 2001 8:04 PM Subject: Re: CPU design at the gate level >"Peter C. Wallace" <pcw(a)mesanet.com>: > >> There was non-integrated RTL and DTL logic before ICs not sure about non >> integrated TTL... > >I don't think non-integrated TTL is even possible using >standard parts. It relies on multiple-emitter transistors, >and I've never heard of anyone making those available >discretely. > >Greg Ewing, Computer Science Dept, +--------------------------------------+ >University of Canterbury, | A citizen of NewZealandCorp, a | >Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | >greg(a)cosc.canterbury.ac.nz +--------------------------------------+

22 years, 5 months

hard-sector 5 1/4 disk

by pete＠dunnington.u-net.com

On Oct 30, 10:32, Fred Cisin (XenoSoft) wrote: > 3.5" 1.4M (I have NEVER seen a 1.44M format!) are also at 300RPM However, many original 3.5" (SSDD not HD) ran at 600rpm, but with 2x the normal data rate (so the disks could also be used in 300rpm drives at normal data rates). -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

And the winner is...

by millerbj＠umich.edu

Chad Fernandez As promised, I waited until Wednesday. Chad was among the first to email me, and he happens to live right on my way home to good ol' Nashville (or Vermontville, take your pick) - thank all things holy I grew up in Chicago. Thanks for playing everyone. Blair

22 years, 5 months

DELUA/DELQA needed, trade....

by oliv555＠arrl.net

I am in need of the aforementioned ethernet cards; possible trade items I have are KFQSA (skunk), KLESI-(Q), M9312's, RXV21, RA70, RA73 or .... -nick oliviero

22 years, 5 months

Emulex Qbus Disk controller? (Wiring diagram for connectors?)

by CordaAJ＠nswc.navy.mil

Thanks! I believe I have a couple of ESDI drives hanging around from one of my SGI 4D/70 behemoths.... I've done another quick deja search and, while it's confirmed the ESDIness of the controller, There doesn't seem to be any info out there as far as the DIP switch, and pinouts for the connectors. (I also checked a few other sites I know of that have scanned DEC manuals, but no luck... anyone know of a site with a scanned manual for this critter?) If I remember correctly, ESDI has a MFM-like interconnect with separate control and data cables. The control cable daisy-chains across the drives, while the data cables star out from the controller to each drive. Since my controller has 3 connectors, I would guess that it probably supports 2 drives (one connector driving the control cable, and one data connector for each of two drives) What I don't know is the pinouts for the connectors on the controller (since all 3 connectors appear to be identical in size and SCSI-2 form factor) does anyone have a clue as to the connector assignments and wiring pattern? I can possibly hack a couple of SCSI2 cables to make a viable adaptor... -thanks- -al- -acorda(a)1bigred.com > -----Original Message----- > From: Chuck McManis [mailto:cmcmanis@mcmanis.com] > Sent: Wednesday, October 31, 2001 4:00 PM > To: classiccmp(a)classiccmp.org > Subject: Re: Emulex Qbus Disk controller? (Need help identifying this > one) > > > Search on Emulex QD24 and you'll be rewarded with the > information that it > is an Emulex MSCP ESDI disk controller. Which can be just as > useful as a > SCSI card since finding a couple of 300MB ESDI drives > shouldn't be too > hard. I think I've got a 170MB one laying about somewhere. > Kirk Davis (kdb(a)ndx.net) mentioned he had some SCSI > controllers he was > thinking about trading for PDP-11 gear. Also I just missed a > lot that had > about 10 Dilog SCSI controllers on it at a local scrap/bid > place (had I > known I would have bid more than the $75 it went for :-() my > interest was > in the more mundane things like a couple of DSSI ID plugs and > an external > DSSI disk expansion box. > > --Chuck > > At 11:32 AM 10/31/01, you wrote: > > >I'm trying to bring up NetBSD on a Vax 4000/300, and so I'm > >looking for a MSCP SCSI disk controller. After going through > >my stack of Qbus boards (collected from hamfests, etc.) I came across > >one that looks like it might be a SCSI controller... unfortunately, > >I haven't been able to confirm it, since a google search turns up > >very little on it (a bad sign...sigh) The board is labeled: > > > >"Emulex Corp QD2410401-02 rev F" > > > >It has 3 connectors and a DIP switch on the front plate. The > >connectors appear to be of the SCSI-2 form factor. Has anyone > >run across this critter before, or tried it with NetBSD? Come > >to think of it, Is this even SCSI, or something else > >entirely? Also, does anyone know where their might be some > >on-line docs for it, or at least a description of the DIP > switch settings... > > > >-thanks- > >-al- > >-acorda(a)1bigred.com >

22 years, 5 months

TRS-80 Model 4P needs new home

by vcf＠vintage.org

Sue Beck of Concord, Massachusetts, has a TRS-80 Model 4P that needs to find a new home. Please contact her directly. Reply-to: <sbeck(a)world.std.com> Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

22 years, 5 months

VAX 6400's futile attempts to booting Ultrix 4.1, still some progress ...

by gunther＠aurora.regenstrief.org

Hi, O.K. the good news is that I managed to boot VMS, read all 40 files from the Ultrix 4.1 boot tape without error (and with the right block size :-) and write those files back to a TK70 tape without major problems. I know that the tape is good and the drive is good. (At least good enough.) And still we won't boot. But that means that something is wrong with that Ultrix version 4.1. It doesn't work on the VAX 6400. Fortunately I am in the position of access to sources that would allow me to build an Ultrix 4.2 based loader. However, I'm even convinced that it isn't the loader's fault. The 4.2 sources of the loader show that it always prints an error before halting. And I never see an error. In fact the only way for the loader to exit without a message appears to be its non-returning call to the vmb.exe gizmo. And -- oh bummer -- I don't seem to have source code for that one. The interesting light pattern at the TBK70 board and the console fault light seems not to indicate a read error >from tape, but more likely a futile attempt of some boot stage of getting to talk to the TBK70 and carrying on the next boot stage. Too bad I can't find out when and where this happens. Anyway, quite likely its in the vmb.exe gizmo which is a black box. So, I might need some boot tape of a newer version (one that properly supports the VAX 6400 series) or I have to find an alternative booting strategy. I guess the MOP booting of ultrix might becoming a more feasible option. So, here is a call upon all of you who know something about MOP booting Ultrix. Please give me any info you might have. I have mopd and am on FreeBSD as the boot host. ... ... ... Another alternative is to set up an "InfoServer" VAX station with a CD ROM and an Ultrix CD of a post 4.1 version. Is this something someone has available? May be in the area or something one could set up accessible through the Internet (a 36 kbps modem line, ahem...) Once I have Ultrix up on one machine I can help others to do the same. If not by writing a boot tape by ... ... here is another option how a good soul could help me get going: If you have an Ultrix 4.2 or higher running on an RA disk, I would appreciate a disk image. That I should be able to raw write to another RA90 (or RA82) using VMS and then boot from that disk. Just make sure there is a GENERIC kernel on the disk image. I still don't have a KFMSA, so RF disk images would not help me. Except, perhaps, if someone has Ultrix 4.2 or higher running and some spare disks to tinker with, I might be able to fiddle a generic disk image that could be installed on any disk. BTW: after having fixed my TU81 unit number problem, I still can't boot from TU81. Seems like the VAX 6400 with my EEPROM revision doesn't know how to boot from TU81. If someone (Geoff?) knows he can boot that way, may be I could use an EEPROM update. Would appreciate your EEPROM dump then. Thanks much, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

22 years, 5 months

SGI challenge L

by CordaAJ＠nswc.navy.mil

I could definitely use the following: 1. CPU board. 2. IO board. 3. Power Bricks. 4. Memory. -thanks- -al- -acorda(a)1bigred.com > -----Original Message----- > From: Lawrence LeMay [mailto:lemay@cs.umn.edu] > Sent: Wednesday, October 31, 2001 2:57 PM > To: classiccmp(a)classiccmp.org > Subject: SGI challenge L > > > Does anyone here have a SGI Challenge L? They're tossing a > few that dont > work, so I might be able to get a small part or so if it is > needed. There > are some hard drives, i'm told they are differential, but > they probably > wont last long once the students start grabbing them (students dont > know what differential is anyways). > > -Lawrence LeMay > lemay(a)cs.umn.edu >

22 years, 5 months

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test-drb October 2001