test-drb August 2011

test-drb@ccmp.vtda.org

143 participants
153 discussions

by derschjo＠mail.msu.edu

Hi all -- Anyone have a service manual for the HP 9485A (not the B or C)? I picked up three of these machines in fairly good physical condition just a couple of days ago, but their operating condition leaves something to be desired :). I've looked in the usual places (hpmuseum.net, and hp9845.net) but I can only find the manual for the B/C revisions. My understanding is that the "A" version is different in some ways (not really sure what the hardware differences are yet.) The good news is that one of the three 9845s just required some careful reseating of the cards and ROMs and it now appears to be working correctly (I haven't yet tested the printer (no paper yet) and I'm assuming the tape drives will require a bunch of work, assuming I ever find any tapes to use). I'd love to get the other two running as well, hence the need for the service manual. All three appear to be complete (with I/O, Mass Storage, and Graphics option ROMs), now if I could just get my hands on an HPIB interface... Thanks, Josh

13 years, 4 months

RS-232 smart cables (was: Re: Getting a Sun Ultra 5 To Work)

by mtapley＠swri.edu

At 1:14 -0500 8/23/11, Fred wrote: >Would you like a few "RS232 Smart Cable"s? > >They obviously do not work anywhere near as well as a conscious human >being with an LED tester and a breakout box. This depends on the human being, or possibly the definition of "conscious". I was too ignorant to get my Rainbow talking to my NeXT without mine, a few years back. I still have all 3, and next time I connect them, I'll likely still be too ignorant (unconscious?) to do without the Smart Cable... -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

13 years, 4 months

Cabling RQDX3 to M9058

by robert.jarratt＠ntlworld.com

I am a bit confused about this. I have an MicroVAX II in a BA123 enclosure with an RQDX3 which has a problem with not seeing the disks (which I know to work), when I try to boot from a disk I get DEVINACT. I am beginning to suspect a fault in either the RQDX3 or the M9058. I decided to make sure that the cable between them was the right way round as the cable I have does not have keyed connectors. Here is where I get confused. On the M9058 printset (http://bitsavers.org/pdf/dec/qbus/MP02259_RQDX3_schem_Oct85.pdf) it shows the M9058 as having pin 1 on the left of the card (when looking at the component side with J12 at the top). The printset does not show where pin 1 is on J1 of the RQDX3, but I had it connected to the uppermost side of the connector when the board was installed in its slot. In this configuration the front panel lights show green when I apply power. However this gets the error I mention above. I checked my MicroVAX II in a BA23, this machine accesses the disk just fine, but the cable is connected with pin 1 at the other side, ie opposite to the BA123. I tried inverting the cable at the RQDX3 in the BA123, but it still gets DEVINACT and this time the front panel lights don't work. I am pretty sure therefore that the cable was in the right way round in the first place, and that looking at the BA23 is a red herring, possibly with the cable being inverted at both ends and therefore "correct". Can anyone confirm that I have the cable oriented correctly in the BA123? In other words pin 1 at the bottom of the connector on the RQDX3 itself when installed in its slot, and on the M9058 pin 1 on the left of the card when viewed component side with J12 at the top (ie at the top again when the M9058 is mounted in its slot)? Thanks Rob

13 years, 4 months

Fwd: [comp.sys.dec] PDP-11/23 and peripherals available

by legalize＠xmission.com

This message has been forwarded from Usenet. To reply to the original author, use the email address from the forwarded message. Date: Mon, 22 Aug 2011 06:01:41 -0700 (PDT) Groups: comp.sys.dec From: olinhamrick at windstream.net Org: http://groups.google.com Subject: PDP-11/23 and peripherals available Id: <644fd724-48ed-4631-be38-9aca8a334d7b at b20g2000vbz.googlegroups.c om> ======== I have in storage a PDP-11/23 with two RLO-2 drives (I think), two or three VT100 (or 101?) terminals, a line printer and a spare RLO-2 drive. I would like to get rid of the whole lot, located in Mt. Pleasant, SC. The mini-mainframe was last powered up in about 1995. Does this stuff have any value? Is there a market for it or for any of the parts? Do you have any serious suggestions re how I might get rid of it. I have already had several suggestions such as 1) take it all out to sea and dump it to form a mini-artificial reef; 2) construct a catapult and send it deep into the Hell Hole Swamp; 3) buy it a one- way bus ticket to somewhere far away; 4) offer it to any of the local college IT/computer science depts. to be used as yard art. The whole mess weighs about 700 lbs. I would love to see it get recycled or put into a good home if there is one. Any serious suggestions would be much appreciated. Thanks, Rick Hamrick

13 years, 4 months

Intel MDS available in SC

by mtapley＠swri.edu

At 12:00 -0500 8/20/11, Rich wrote: > I got an email from someone in Landrum, SC (close to Greenville and >Greer) Grab it before it washes away. Rich, you might return cautions and good luck wishes to the original source for us. http://www.nhc.noaa.gov/graphics_at4.shtml?5-daynl#contents Hurricane Irene is currently headed for thereabouts. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

13 years, 4 months

3B2 archive

by aek＠bitsavers.org

Al, managed to resuscitate the drives off my old server and found my copy of Bob Martel's 3b2 software archive, finally. (It had gotten lost in a hosting move) I don't seem to be able subscribe to cctalk, though; maybe you could post a note? The archive is at ftp://www.dragonsweb.org/mirrors/little.nhlink.net/pub/att/, with a b2zip'd version available as well at ftp://www.dragonsweb.org/mirrors/little.nhlink.net.tar.bz2 Thanks, jbdigriz

13 years, 4 months

looking for dec paper tape trays

by tdk.knight＠gmail.com

anyone got any collecting dust would be nice to have something to store my pdp8 tapes in properly cause this storing them in the tub is not the best

13 years, 4 months

8/L has been sold. Have ADM-3A for sale.

by charlesmorris＠direcway.com

The 8/L, ASR33, DF32 disk emulator project has been sold. Thanks for all your interest (and offers). Anyone who wants the DF32 emulator schematic and artwork, I can email you a copy. I hope someone can take my "first draft" and make a useful unit for those who are interested. I have a working ADM-3A that I may want to sell also. It has a homebrewed lower-case 2716 ROM (thanks Steve Loboyko for the font files). I installed the "optional" parts for current loop on the main PCB, and used it with the 8/L. The only thing that's missing is the little aluminum panel covering the dip switches. Any interest? Same deal as before, please email offers, "sealed bids". thanks Charles

13 years, 4 months

bounty for tool organizer

by jwest＠classiccmp.org

http://www.ezwind.net/jwest/photo.JPG I have one of these bin/toolOrganizers (made by rubbermaid) on my home techbench. Love it. I'm looking for another one for my work techbench, but apparently they are no longer made and my google & ebay searches have come up dry. Anyone have one, or know where I can get another one of these? What's a fair bounty for finding one - $20? Jay

13 years, 4 months

RD53 Stiction

by robert.jarratt＠ntlworld.com

I sent the email below out a little while back, just wondering if anyone has any advice? Thanks Rob _____________________________________________ From: Rob Jarratt [mailto:robert.jarratt at ntlworld.com] Sent: 23 July 2011 21:25 To: General Discussion: On-Topic and Off-Topic Posts (cctalk at classiccmp.org) Subject: RD53 Stiction I have an RD53 which is suffering from the sticky bumper problem. Normally I can resolve this with a sliver of paper placed over the sticky bumper. But in this instance it seems the bumper has practically liquefied and I think it has gummed up some of the mechanism. Is it feasible to dismantle the assembly to clean it up? Has anyone ever done this? Any advice? Thanks Rob

13 years, 4 months

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test-drb August 2011