test-drb

test-drb@ccmp.vtda.org

101090 discussions

by pete＠dunnington.u-net.com

On Feb 27, 17:23, Russ Blakeman wrote: > Well SOB - they still sell the MCT 8 bit 4 floppy controller - about 1/5th > of what it used to cost in 85...here's a link to it: > > http://www.jdr.com/interact/item.asp?itemno=MCT-FDC-HD4 Interesting. Anyone know if it supports single density, and/or works with 8" drives (in conjunction with suitable cable adaptor)? -- Pete Peter Turnbull Network Manager University of York

24 years, 1 month

RX02 / DSD440 problem

by pete＠dunnington.u-net.com

On Feb 27, 12:21, Andreas Freiherr wrote: > Darn! - I disassembled the whole stuff manually yesterday evening! :-) I apologise for the slightly non-standard syntax used, notably for octal constants; it was rewritten for (and then assembled by) a home-grown cross-assembler. > Non-obvious is that only two sectors (1 and 3) need to be read: the code > in the manual continues up to sector 7 (constant in word 2124, or in > your copy, at 1124), in steps of 2 (BTW, why are even sectors skipped?). I think there were actually three errors in my original copy. Anyway, the version on my website is now correct. It's not the only way to do it, I've seen other versions (there are similar versions, not identical, but interestingly enough with mostly the same errors, in various RT-11 manuals, the Microcomputer Peripherals Handbook, and the RX02 Pocket Service Guide). The reason for the number of sectors is that you can use the same bootstrap with trivial alterations for a single-density boot, but then you need four. sectors, not two. The reason for missing the even-numbered sectors is because they are software interleaved to give time for the memory transfers between reads. > The most non-obvious error is using the word at location 1132 either as > a HALT instruction (when aborting bootstrap due to an error detected by > one of the BMIs) or as a constant to load into R0 (when finishing > bootstrap and passing control to address zero, for which a CLR PC is an > excellent JMP @#0 replacement). My copy of the LSI-11 manual had this > completely wrong - it would fail to abort properly. Some versions actually have the HALT elsewhere. I once spent ages trying to work out the shortest variation on this bootstrap, IIRC I managed to save just one word. > Starting the bootstrap might be easiest with a 1000G (or in the original > copy, 2000G). one command shorter than setting R7 to 1000 and then > <P>roceeding. The reason for the <P> instead of <G> is to avoid a bus reset, which makes the RX02 and some processors "do things". And you're supposed to disable interrupts by setting a mask in RS first. It doesn't use the stack, though, and any decent second-stage boot should set R6, so I suspect that's redundant. I'm surprised your version starts at 2000. By convention, all normal bootstraps and similar start at 1000 -- the best-known exceptions being XXDP code (starts at 200, same as on a PDP-8) and the TS11 bootstrap which starts at 10000 (to allow space for larger tape blocks). -- Pete Peter Turnbull Network Manager University of York

24 years, 2 months

RX02 / DSD440 problem

by pete＠dunnington.u-net.com

On Feb 26, 13:41, Tom Leffingwell wrote: > > The first message I normally see is RT-11 loading...I never have to do > anything, it just boots from DY0:. If I don't have a disk in, or its > messed up for whatever reason, I get: > > 173326 > @ > > I looked a little closer inside the unit, and it doesn't seem to have a > belt. There's a worm actuator that shakes when on power up when it tries > to move back to its starting place. It can be moved by hand easily, so > it doesn't seem to be binding. That's the head positioner leadscrew. On powerup or a Bus Init, it should move back to track zero (maybe only if there's a disk in ithe drive, depending on the controller). The drive belt is on the underside of the drive. They often fall off. A quick way to test if the drive is turning, is to take a floppy, trun the disk in the jacket until the sector hole is visible in the round hoe in the jacket, put it in the drive, close the door, open the door, take the disk out, and see if the sector hole is still visible. Most 8" drives rotate all the time, so closing the door (which clamps the disk to the spindle) should turn it. The odds of the sector hole ending up in exactly the same place after this are minimal. It doesn't tell you if the drive is running at the correct speed, but it will tell you if it's not turning at all. If not, the most common causes are that the drive belt has slipped off the pulley, or that the plastic collet which clamps the disk has broken and isn't clamping, or not well enough. -- Pete Peter Turnbull Network Manager University of York

24 years, 2 months

PDP-10 Emulators (was Re: Alpha AXP (was Re: MicroVAX 4000/VLC))

by healyzh＠aracnet.com

> Until I have a pressing need for 64 bits, I will probably keep this > box at a low priority, but if any of the PDP-10 emulators would > rather be on a medium to slow-speed 64-bit machine rather than on a > medium to fast 32-bit machine, I might dust it off. I just don't see > where it's anything besides cool for the sake of cool right now. I've not tried running KLH10 on the AlphaStation 200 4/233 running OpenBSD I have, but I've run the PDP-10 version of SIMH on it. You really don't want to do that. It was usable, BUT it was *CONSIDERABLY* slower than a KS10. I've got a 500Mhz Celeron w/256MB RAM, and a 8MB HD plugged into a bare MicroATX i810 board sitting on a shelf. It makes a killer PDP-10, and can run two copies of SIMH (TOPS-10 7.03 and TOPS-20 4.1) at or faster than KS10 speeds. Of course what I really like is the 1Ghz PIII running KLH10 running TOPS-20 V7.0, especially since I can telnet directly into it :^) Zane PS anyone looking for information on emulating DEC systems should see: http://www.aracnet.com/~healyzh/decemu.html especially for PDP-10 emulation.

24 years, 2 months

DSSI support for NetBSD: request for docs.

by cmcmanis＠mcmanis.com

Jochen wrote: > You mean it is possible to speak MSCP on a DSSI bus without > an additional protocol layer? > Or do you mean that (only?) non-DSSI controllers a la RQDXx and > KU]DA50 can speak MSCP without SCA/SCS? And Roar wrote: I have got a very strong feeling I was wrong. (Sorry) > But if you have to talk SCA/SCS with the DSSI-devices, that might > be a > problem, since SCA/SCS is not published, and no implementations are > available. In my experience with the SII chip you set up a buffer in its shared memory with the MSCP "packet" layed out, and the node number of where you wanted it to go at the front. Then you write the that address into the descriptor register and the SII chip picks it up and drops it off at the drive. In my case I was writing the equivalent of the SCSI INQUIRE command, and then a bit later, the SII chip interrupts you to tell you that there is a new descriptor in its buffers and if you look at it (which I did from the kernel debugger because I had just panic'd on the interrupt :-) you can see that the drive has returned to you the information you requested. Questions that were unanswered in my mind when I put this down about this time last year were: 1) maintaining the physical/virtual mapping between the 128KB buffer and main memory. 2) Hooking the MSCP code that was there so that it could fill in the packets. 3) Writing the bus "enumerator" for config so that I could create a device instance for each disk I found (tapes I would ignore for now) 4) Hooking send and receive queues through a top level structure that would feed/retrieve them from the SII chip. So I tried last night to get a 'diff' of my build tree from the cvs tree but since its from 1.5.1 pre-release, the number of diffs is _huge_ relative to the 1.5.2 tree. I'll put a tarball of my sys tree up later today for anyone who might want to look at it. What I've not been able to find was my code that set up the INQ command. It shouldn't be too hard to recreate however. --Chuck

24 years, 2 months

Ebay 5360

by ceby2＠csc.com

Folks -- I made the ghastly mistake of bidding on an IBM 5360 ($25). The sale closes today, and it doesn't look like there'll be other bidders to get me off the hook. So I thought I do the seller a little favor and spread the publicity around for him, in case any of you have some unused warehouse space and were stumped for a way to fill it. I, of course don't. All you need do is outbid $25 on item 2004672608. ;->~ Seriously (or slightly more seriously) if I'm landed with this thing I'll probably want to make copies of all the disks and manual then donate it to a museum collection -- should any be interested. Or a private collector if their not. The real reason I bid on it was to ensure it's survival of course. I wasn't actually planning on testing the floor joists in my 1-bedroom apartment. As far as I can tell it's complete, with two printers and two tape drives. And it's located in Connecticut. If anyone else has a better idea for preserving it, or wants to lend me a hand (I'm in Massachussetts) please chime in. Thanks, Colin Eby Senior Consultant CSC Consulting

24 years, 2 months

MicroVAX 4000/VLC

by DAW＠yalepress3.unipress.yale.edu

Umm, IIRC, I just stuck it in. Yes, you're supposed to have done some hardware changes, but I thought I'd try anyway. ARCconsole reports it right, but I haven't done any real benchmark to see if it really is running at 233... I'll have to dig up the info. And maybe someone here can burn a new chip for me? --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 90581 Mac OS X 10.1.2 - Darwin Kernel Version 5.2: Fri Dec 7 21:39:35 PST 2001 Running since 01/22/2002 without a crash > ---------- > From: Megan > Reply To: classiccmp(a)classiccmp.org > Sent: Tuesday, February 26, 2002 6:09 PM > To: classiccmp(a)classiccmp.org > Subject: RE: MicroVAX 4000/VLC > > > I have a 233 MHz CPU from a dead Multia in my AXPpci33 > > What did you have to do to get it working? I was under the impression > that using a faster processor required some board modifications... > > If it will simply work, I guess I need to locate a 233 Mhz CPU. > > Megan Gentry > Former RT-11 Developer > > +--------------------------------+-------------------------------------+ > | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | > | Unix Support Engineering Group | (home): mbg!world.std.com | > | Compaq Computer Corporation | addresses need '@' in place of '!' | > | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | > | Nashua, NH 03062 | "pdp-11 programmer - some assembler | > | (603) 884 1055 | required." - mbg KB1FCA | > +--------------------------------+-------------------------------------+ > >

24 years, 2 months

RX02 / DSD440 problem

by pete＠dunnington.u-net.com

On Feb 26, 19:00, Jerome Fine wrote: > I seem to remember someone saying that the DSD 440 reads block zero > of drive zero on power on, then times out and jumps to location zero > to start. That's how most 3rd-party RX controllers seem to work, in my experience. > Try typing in the MSCP bootstrap. Why? The RX02/DSD440 is a DY: device, not DU: > The standard RX02 bootstrap uses UNIT=0, so it may need to > be modified to use UNIT=1 for DY1:, however that stuff is not > accessible to me right now. Does anyone have the release > notes for RT-11? It may be there. I've had it online for a long time, at http://www.dunnington.u-net.com/public/ODT/Listings/RXV21BootD I recently made a minor correction (almost all the DEC printed copies have several errors). It's a Unit 0 bootstrap, but changing the word at locations 001036 from 407 to 427 should make it work for Unit 1. At least, I think so; I used it recently and I think that's what I did. -- Pete Peter Turnbull Network Manager University of York

24 years, 2 months

DEC BC09J cable

by Mzthompson＠aol.com

On Tue, 26 Feb 2002, Alan Pearson <alan.pearson(a)cramer.com> wrote: > I'm looking for a DEC BC09J cable to hook up a VS3100 to a CD drive... That's the same cable as used with the DECstation 2100/3100. A couple DS3100s I hauled home had a different cable, p/n BC56H-03. This one is a few inches longer and the cable comes straight into the 50 pin Centronics connector as opposed to the BC09J which is right angle. HTH Mike

24 years, 2 months

ebay: control data tape drive

by dhquebbeman＠theestopinalgroup.com

> I came across this ebay item, its some sort of Control Data tape drive. > I'm just mentioning it in case someone in the Virginia area is interested. I see he's relisted it... I considered buying this last year when he ran it previously, but he's not interested in shipping it, and I don't have a Virginia connection likely to help out. :( -dq

24 years, 2 months

ebay: control data tape drive

by lemay＠cs.umn.edu

I came across this ebay item, its some sort of Control Data tape drive. I'm just mentioning it in case someone in the Virginia area is interested. http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=2005305942 -Lawrence LeMay

24 years, 2 months

Reply to: RE: Rush! ( was: RE: Once in a Lifetime, Twice in F orever)

by csmith＠amdocs.com

> -----Original Message----- > From: nerdware(a)ctgonline.org [mailto:nerdware@ctgonline.org] > I remember reading an early interview with Geddy and he was > talking about auditioning drummers after Rutsey left. He said > Peart came in, and while they were impressed with his > drumming abilities, they were also thinking, "Hey! This guy can READ!" I suppose that is kind of impressive these days, sadly... on the other hand, if he reads that much Rand, I would have been more disappointed in the quality of his books, than concerned with whether he could read. Personal opinion, of course. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

24 years, 2 months

Stanco della solita routine quotidiana??

by jessica＠hotmail.com

Skipped content of type multipart/related

24 years, 2 months

Michael Sokolov Cooking: The Ultimate VAX

by csmith＠amdocs.com

> -----Original Message----- > From: Jeffrey S. Sharp [mailto:jss@subatomix.com] > I vote you call this new breed of VAXen the SuperVAX. Start > out with the > SuperVAX 1000 and see where it takes you. Whatever the name, > I want one. Or perhaps you could call it something like "Extended VAX" --err, well, I suppose that one will still be in use for a couple of years... :) Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

24 years, 2 months

Stoned? [was: RE: Rush! ( was: RE: Once in a Lifetime...)]

by rigdonj＠cfl.rr.com

My turn. Where did the saying "better living through chemistry!" come from? The answer will surprise you. Joe At 12:30 PM 2/26/02 -0700, you wrote: >I have it on the Easy Rider movie soundtrack album. Could look it up tonight >if you want. > >-----Original Message----- >From: David Woyciesjes [mailto:DAW@yalepress3.unipress.yale.edu] >Sent: Tuesday, February 26, 2002 1:00 PM >To: 'classiccmp(a)classiccmp.org' >Subject: OT: Stoned? [was: RE: Rush! ( was: RE: Once in a Lifetime...)] > ><snip> > >Quick quiz! > >"Don't bogart that joint, my friend. Pass it over to me." > >Who wrote it, and what albumn? Really, I can't remember the answer! > >--- David A Woyciesjes >--- C & IS Support Specialist >--- Yale University Press >--- mailto:david.woyciesjes@yale.edu >--- (203) 432-0953 >--- ICQ # - 90581 >Mac OS X 10.1.2 - Darwin Kernel Version 5.2: Fri Dec 7 21:39:35 PST 2001 >Running since 01/22/2002 without a crash >

24 years, 2 months

Calling all borgs!!

by rhudson＠cnonline.net

Thanks all!, I have attached the list so far.. This is great! : ^ )

24 years, 2 months

Reply to: RE: Rush! ( was: RE: Once in a Lifetime, Twice in Forever)

by nerdware＠ctgonline.org

> For those who don't know, 2112 is a Sci-Fi type story song >Yes. They got the idea for it from an Ayn Rand book. Neil Peart got it from "Anthem." A lot of his lyrics are inspired by Rand..... I remember reading an early interview with Geddy and he was talking about auditioning drummers after Rutsey left. He said Peart came in, and while they were impressed with his drumming abilities, they were also thinking, "Hey! This guy can READ!" That little fact also blew away my one high school English teacher...I had just gotten into Rush at that point, a fact which just boggled the minds of the stoners in school because Paul, the science-club-president, ham-radio-operator, A/V nerd had more Rush albums than they did....anyway, I knew my one teacher would really get into Peart's lyrics. I lent her AFWTK and Hemispheres, and she took 'em home to listen. She said that while she didn't care for the music that much, she was really impressed by Peart's writing. Really threw her when I told her that the drummer wrote the lyrics.... One day, during class, one of the stoners had somehow thrown out a Rush lyric during a discussion. The teacher said, "Oh! That's from "A Farewell To Kings" from Rush, isn't it?" If I had only had my camera with me....the look on his face was timeless. Paul ORIGINAL MESSAGE FOLLOWS: On Tue, 26 Feb 2002, David Woyciesjes wrote: > Ahh, you should've made it to their last show, the Test For Echo tour, > "An Evening With Rush". They played all 20 minutes of 2112, the first > time in about 20 years. And a lot of other classic Rush tunes as well. Well, first let me apologize for the off-topic post, but I simply *must* respond. Please forgive me. Rush is tied with Dream Theater (a Rush-influenced group) as my favorite band. I'm young enough to never have been at a Rush show, but I *will* be at at least one show on this upcoming tour, since it may be their last. Since it seems that there are some other Rush fans here, let me throw out this link: http://www.rushpetition.com/ That's an online petition to communicate fans' desire to hear some rarities in the set list. They have a list of songs that have not beel played live for at least a decade, and you get to vote for 5 of them. The final results will be submitted to Rush's record company when the new album is released. If you are a Rush fan, it is your _duty_ to go sign the petition now! > For those who don't know, 2112 is a Sci-Fi type story song Yes. They got the idea for it from an Ayn Rand book. -- Jeffrey S. Sharp jss(a)subatomix.com

24 years, 2 months

NIC Card for MV3100

by Antonio.Carlini＠riverstonenet.com

Doc wrote: >On Tue, 26 Feb 2002, Sleet, Edward B wrote: > >> Can anyone tell me if a network interface card exists for a MicroVax 3100? > > If my information is correct, the MV3100-90 is the same system board >as the VAX4000-100, and has headers for a QBus backplane. I _think_ >that all the higher models - m95, m96, etc. - have them. > I could be wrong. The uV3100-9x all have the connectors for Q-bus (and DSSI) but will not use them (AFAIK) until you issue the console command that convinces them that they are a VAX 4000-10x. Then you'll need to wire up the connectort to a Qbus expansion box. (The VAX 4000-10x case has a connector on the back that connects to the expansion cab via a suitable cable. Internally some sort of ribbon cable connects the connector on the case to the MLB). All these machines have an on-board ethernet anyway, so unless you need a second (or even thrid) ethernet, you really should use the built-in one. Antonio

24 years, 2 months

Long distance HP haul completed!

by steven_j_robertson＠hotmail.com

Bob, Glad you got home safely. I guess next time you'll bring a BIGGER truck ;-) SteveRob >From: Bob Shannon <bshannon(a)tiac.net> >Reply-To: classiccmp(a)classiccmp.org >To: classiccmp(a)classiccmp.org >Subject: Long distance HP haul completed! >Date: Tue, 26 Feb 2002 16:42:15 -0500 > >Is driving 3,220 miles for 3 HP minicomputers unreasonable? > _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com

24 years, 2 months

what the heck is THIS?

by brian＠quarterbyte.com

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=2004360621 Anyone know what this is? It looks like a test probe maybe, one of those things that they press against an IC under test and which brings out all the leads for probing? Or, what? Doesn't look like it has anything to do with disk drives.

24 years, 2 months

OT:RE: Stoned? [was: RE: Rush! ( was: RE: Once in a Lifetime...)]

by rigdonj＠cfl.rr.com

At 02:11 PM 2/26/02 -0700, you wrote: >DuPont advertising, 1939 to 1980's: >http://heritage.dupont.com/touchpoints/tp_1939/overview.shtml Close. Actually it was the theme of their exhibit in the 1934 World's Fair. That's when they first announced/exhibited Nylon. But in the '60s it took on an entirely different meaning! :-) Joe

24 years, 2 months

Anyone have...

by mcguire＠neurotica.com

On February 26, James Willing wrote: > ...a programmer that can do a dump from a MC68701S-1 microprocessor? I believe my Data I/O 2900 will do it. -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

24 years, 2 months

DSSI support for NetBSD: request for docs.

by Antonio.Carlini＠riverstonenet.com

Gunther Schadow >I have the UDA50 manual (BTW: anyone have a UDA50?) > that I can copy for you. Been there, done that, did a maintenance ps too. http://208.190.133.201/decimages/moremanuals.htm Now if whoever has that UDA50 programmers guide were to scan it and make it available ... Antonio

24 years, 2 months

PDP-10 Emulators (was Re: Alpha AXP (was Re: MicroVAX 4000/VL C))

by dhquebbeman＠theestopinalgroup.com

> too bad, you're running TOPS-20. Certainly a fine operating system, I > heard several really nice things about it, but I don't have any personal > experience with it. Is it true there is an UNDELETE command that can be > used until you PURGE or log out? The KLH10 is an emulator, not real iron (and while the em is named KLH10, the proper name for the emulated machine is "KN10"). > You don't possibly have a machine running TOPS-10? - It would be great > fun to meet such a monitor again. I _loved_ that reply when you said > /M/P to FILDDT: "[patching the running monitor]" - try that with any > machine today! Dan does indeed have a KS10 (or two?), but I think he's still having trouble getting it properly operational. OTOH, he's had TOPS-10 up on the TS10 em before, and I thought Zane Healy was doing likewise. And I'll have one of the -10 ems up for my historical simulation of the IU Computing Network, but not for a year or so... > Etc., etc... - If I only had more time, I'd really need one of those > emulators! Once you get the emulator build done and the DEC tape images downloaded, it takes less than an hour to install TOPS-10 7.03... well, a little longer to get *all* the cusps and product set stuff loaded... -dq

24 years, 2 months

PDP11 Redux, or Behind-The-Scenes Bull

by mcguire＠neurotica.com

On February 22, Doc Shipley wrote: > And today, one enterprising soul, a long-standing list subscriber, > found MDR's website from my email address. He both emailed and called > my boss today trying to buy the machine out from under me. Oh shit...Asshole alert!! -Dave -- Dave McGuire St. Petersburg, FL "Less talk. More synthohol." --Lt. Worf

24 years, 2 months

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