- test-drb@ccmp.vtda.org - classiccmp.org

by mtapley＠swri.edu

>r. said: >On Fri, 30 Apr 1999, Huw Davies wrote: >The NeXTs don't even really have power switches. Command-command-~ is supposed to bring up a monitor through a non-maskable interrupt, into which you can enter the command ? for info on available commands. "halt" saves files to disk and gracefully halts the system. "mon" goes to the ROM monitor but does not gracefully halt the system. An emergency shutdown is available by pressing <left alternate>-<left command>-<numeric keypad *>. (on an ADB keyboard, use the command bar instead of the left command key). This will not power off the computer but will do a hard reset of the CPU. This does *not* result in a clean shutdown, and can damage an optical disk if it's in the middle of a write operation (so I hope you didn't just do it ;-) ). - Mark

27 years, 2 months

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console pinout?

by cmcmanis＠mcmanis.com

Ok, I give up, where the heck does one find the pin-out for the weird not-quite-an-RJ-45 connector that connects the console to the VAX? I've got a cable that has the weird connetor on it (both ends :-() which no doubt plugs right into a VTxxx VAX Console Terminal but I'm more interested in something like a serial port of a PC pretending its a VTxxx console terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I can plug into one of those DB-9 hood things. --Chuck

27 years, 2 months

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More info RE: KA650 & uVAX

by allisonp＠world.std.com

> On Wed, 5 May 1999, Greg Linder wrote: <> <> > installed in. I agree with the cardboard solution- Whenever I mount dri <> > of any type that I don't have many of I always either cover the bare me <> > case with contact paper or a piece of carboard or something <> > non-conductive. <> <> A strip of mylar or other thick, durable plastic-like material cut from <> sheet would probably be even better. Skip the metal. Don't use it and see how it goes. I have a few in service that way and they are fine. Allison

27 years, 2 months

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MacIntosh in a box question

by rigdonj＠intellistar.net

I found some strange looking rack mount boxs in a salvage place today. They're marked AuudioVision 90. I opened one up and found that it has an Apple Mac Quadra 950 built into it. I rounded up a monitor (but no keyboard) and fired one up. It boots to MacOS then asks for a password. Is there anyway to get around the password other than reinstalling everything? There are six of them available. Is anyone interested in them? They have a huge non-apple power supply, and at least one floppy and one hard drive and all the regular Nu-Bus (?) slots. Another that I opened had two hard drives. Joe

27 years, 2 months

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TK70 resolution

by cmcmanis＠freegate.com

I disassembled enough of the VAX3800 to get to the TK70 and pulled it out. The maintenence logs were stuck into the top part of the cabinet behind it and apparently this TK70 was replaced in August of 1995. It also had the skid plate attached so it was a simple operation to slip it into the BA123 I've got. The skid plate had a plastic insulator on it between the skid plate and the drive so it looks like the skid plate has to be insulated on these drives. I'm guessing that somewhere in the manual it says: "MUST BE INSULATED, OTHERWISE A SMALL FIRE WILL BREAK OUT NEAR THE POWER CONNECTOR AND SMELL REALLY WEIRD." :-) Its running in the uVaxIII now with no worries. After its had a few hours on it I'll "upgrade" again to the KA655. On an unrelated note, I've got a couple of KFQSA DSSI controllers now, are they usable in a Q/Q backplane? Their CD fingers appear to only touch power and the DMA grant lines (backside of the C connector) --Chuck

27 years, 2 months

1
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HP 9000 840S

by steverob＠hotoffice.com

> > Joe > > At 07:17 PM 5/5/99 -0700, you wrote: > >Re: > > HP 9000 840S > > > >> I have a chance to pick up one of these. Does anyone know anything > about them? > > > >The 9000/840 was HP's first PA-RISC HP 9000. It's the same > >hardware as the HP 3000/930, and has an 8 MHz clock. They > >generally shipped with something like 24 MB, IIRC (which wasn't > >enough). > > > >I think you should take it! If not, post here...a couple of us might be > >interested. > > > >SS > > > Joe, I'm definitely interested: Can you provide more details? Is the system complete? Is the OS installed? I'm assuming it's in Central Florida? TIA, Steve Robertson - <steverob(a)hotoffice.com>

27 years, 2 months

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Sanyo ??C-555 spotted at Beaverton Oregon Goodwill

by SUPRDAVE＠aol.com

In a message dated 99-05-06 12:32:28 EDT, you write: > Model number obscured by price tag. Doesn't have a keyboard. Sort of > looks like a floppy P-box but I noticed it had video and keyboard > connections on the back. > > Any of you folks looking for one of these beasts? > isn't that the hated pc-almost-compatible computer?

27 years, 2 months

2
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Teac FD-55GFR 5.25" floppy drive

by mark_k＠iname.com

Hi, The other day I bought a used Teac FD-55GFR 5.25" 1.2MB floppy drive, in order to archive various old 5.25" disks. The drive works, but a whining sound is made when the drive is spinning. This is caused by the mounting of the plastic spinny thing (not sure of the technical term :) which sandwiches the disk hub to the motor spindle vibrating. This is held in place by a C-clip. Pressing lightly, really just touching the spindle of the plastic part stops the whining. My drive may be missing its top casing, if there should be one. Maybe a piece of rubber or something fixed to the top casing presses the spindle in complete drives? I thought of fixing the whining by using a piece of sticking plaster. Any better ideas? Are these drives supposed to have a top casing? In my one I can see the head assembly and stepper motor moving. -- Mark

27 years, 2 months

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DEC pc distribution summary

by max82＠surfree.com

Ok, here's the result: Anthony Eros is getting 8 machines LordTyran is getting two more machines which I manage to scrounge up (there is yet another machine available) Jason Willgruber is getting a hard drive. These three people need to e-mail me with their zip codes, and I will tell them how much money they need to send me. There is one last machine up for grabs. --Max Eskin (max82(a)surfree.com) http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power

27 years, 2 months

1
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35pin SIMMs

by djenner＠halcyon.com

I ran across three 35-pin, 256 KB, non-parity SIMMs from a Dell proprietary memory board from 1987. Yes, that's 35-- the numbers are clearly marked on the SIMM. If anyone wants these, drop me a message, and I'll send them to you. Thanks, Dave

27 years, 2 months

2
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More info RE: KA650 & uVAX

by CLASSICCMP＠trailing-edge.com

>>>Yep, you got it! [Q/CD all across] >> >>Cool, also the wide spacing to allow the metal covers fooled me for a >>minute, there is only 11 slots in these puppies. >Let me see if I've a few facts straight here. This is a BA213 you're >talking about, and this is the same backplane as would be in a DECserver >550. Right. Note that there are Skunk Box enclosures where the first 3 or 4 or 6 slots aren't Q-bus at all. Various 4000-xxx series boxes, in particular. > Now for the really STUPID question, Q/CD means that all slots are >full height, like the first 3 or 4 on a BA123. Again, on the nose! Tim.

27 years, 2 months

5
5
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core memory

by jfoust＠threedee.com

At 10:25 PM 5/5/99 -0700, Sellam Ismail wrote: > >Yeah, then I spray-painted it neon pink because I didn't like the original >color. Core memory is cool. No way. It wouldn't be Art until you made it into a dress, as a commentary on the way technology has shaped our lives. - John

27 years, 2 months

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Dec RL01 drive problem

by wrking＠tsoft.com

I have an RL01 drive which isn't working correctly. I've opened up the back end of the drive so I can see what is happening and what I see is this. 1. Drive starts to spin up, but it's obvious by looking at the spindle of the drive motor, that the motor never reaches full speed. 2. After about 5 seconds, the drive slows some, and the heads attempt to load. 3. The heads then chatter back and forth. They appear to move in about .25 inches and then retract. 4. This continues until I spin down the drive. If I pull the pack out, and hold the switches closed manually, the motor does reach full speed (although the heads never attempt to load). If anyone has any suggestions as to what might be the problem, I really apprecite some information. Thanks, Bill King

27 years, 2 months

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More info RE: KA650 & uVAX

by emu＠ecubics.com

Hi Chuck, -----Original Message----- From: Chuck McManis <cmcmanis(a)mcmanis.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Wednesday, May 05, 1999 11:16 AM Subject: More info RE: KA650 & uVAX >Very cool, I actually picked up three UVAX38xx's in two of them were KA650 >cpus and in one was a KA655 CPU. All three have been "upgraded" to 32MB of >third party memory. The "skunk" boxes were fairly trashed by the process of >sparing them out. I'm guessing that they were part of a cluster. Lucky day ;-)) > As for peripherals they all have TK70 tape drives, and the > associated >controller, starting to get envious ;-)) > one has a board pair M7164/M7165 connected by short cables >across the top. M7164/M7165 is the KDA50 SDI controller, not SCSI. > And there is a drive hiding in one of them. (I've not >identified it yet) they have what look like SCSI II connectors > but a person >suggested they might be DSSI connectors (which I know nothing about). Could be SCSI, could be DSSI, tell us the type ... >I'm going to see if I can bring one of the boxes to life, All are missing >the panel that would have covered the card cage. If not I'll try to enhance >the speed of my world box bases uVax II. I would start with the ka655. Not because she's faster, but the monitor program is better (sometimes the ka650 have the same, but not always) cheers & have fun, emanuel

27 years, 2 months

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core memory

by sloane＠sbus.com

I collect core memory, found a lead to you on the Web. Got some you wanna part with? Gary Sloane SB/US Engineering Inc. sloane(a)sbus.com

27 years, 2 months

6
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Nec PC-6001A

by dogas＠leading.net

-From: Sellam Ismail <dastar(a)ncal.verio.com> > >Yes, I've got a complete system in my collection with the expansion >chassis and manuals and such. I can try digging it out to make a copy of >the relevant manuals and send them to you. Standard disclaimer on time >applies :) You are a veratible fount of goodies and generosity. What's in the expansion chassis? Thanks - Mike

27 years, 2 months

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[Fwd: Cromemco Z-2 cabinets]

by jim_willing＠mail.intel.com

Forwarded from newsgroup 'comp.os.cpm', reply to original poster if interested. -jim

27 years, 2 months

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OT: neon lamps from previous post

by Philip.Belben＠pgen.com

>> Flip flop should be easy too. This one looks rather like an ECL logic gate: >> >> +V DC >> | >> < >> > >> < >> > >> | >> +--+--+ >> | | >> (:) (:) >> | | >> A--+ +--B >> | | >> > > >> < < >> > > >> < < >> | | >> GND GND >> >> Pull A to ground. Lefthand neon lights. Voltage on right hand neon too low to >> maintain discharge and it goes out. Same works for B - RH neon lights and >> voltage at the common anode too low to maintain LH neon, which goes out. > > Nope! If left is not list then there is no current flow across the > resistor. To ignite the left lamp a voltage (negative maybe 25V) would > have to be applied at A. To extinguish left a voltage of +25(or more) I see what you mean. (Careless of me!) A and B would definitely need pull-ups, but I think it could work. The initial current when you apply the negative pulse to one input should drop the voltage at the common anode sufficiently to extinguish the other neon. > volts would have to be applied. Generally this kind of logic is pulse > coupled using transformers or capacitors. Note a bistable was done in the > case mentioned with one Neon. > > Doing ascii logic from telnet seesion is far to slow for me to give a > complete circuit. Don't post a circuit yet - I want to think about the one-neon flipflop. Theoretically possible, anyway - the two states are on and off (now why does that sound vacuous?). Philip.

27 years, 2 months

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OT: neon lamps from previous post

by Philip.Belben＠pgen.com

Is this really off topic? It's really interesting anyway. > Simple oscillator using NE-2: > > 90 VDC > | > > > < 470K > > > < > | > +------+ > | | > (:)NE2 _ > | - .1 uF 100V > | | > +------+ > | > GND Hmm. The capacitor charges through the resistor until the neon strikes. Since the neon now draws more current than comes through the resistor, the capacitor discharges through the neon until the neon extinguishes. Process repeats. Neat. I suppose that if the resistor is too small, the neon doesn't extinguish, but the capacitor merely discharges until it reaches the steady state voltage of the neon at the current through the resistor. I like it! Flip flop should be easy too. This one looks rather like an ECL logic gate: +V DC | < > < > | +--+--+ | | (:) (:) | | A--+ +--B | | > > < < > > < < | | GND GND Pull A to ground. Lefthand neon lights. Voltage on right hand neon too low to maintain discharge and it goes out. Same works for B - RH neon lights and voltage at the common anode too low to maintain LH neon, which goes out. Don't know the component values though. Outputs are also A and B. You may need pull-up resistors on them, depending on what you're driving. Fun. Keep neons in light-tight containers, though! Are there circuits in which optically coupled neons are useful? Philip.

27 years, 2 months

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PDP11 Plessey disk drive info needed

by Jgzabol＠aol.com

Hi all, I would like to connect a Plessey disk drive to a PDP11 RK11-D controller. The drive has a fixed platter and a removable platter, compatible to RK05 I believe, and these numbers on it: Plessey 3468-0231 PMDD/11B 700540-200217D It has a 42 pin MRA 42 S mating connector, and same with a terminator. I believe the 42 pin should be a Drive Bus, to be connected with standard Unibus cable to controller slot 2A/2B. Question: Would anyone have a maintenance manual for the Plessey drive available ? Short of that, maybe the pinout of the connector, so that I can make the cable ? Of course, reverse engineering of the disk electronics should reveal the pinout/RK11 compatibility, but having the docs just would save a lot of work and be more reassuring ! Thanks and regards John G. Zabolitzky

27 years, 2 months

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Memory differences between KA630 and KA650

by cmcmanis＠mcmanis.com

Ok, this one is puzzling me. Everyone said "you need new memory for the KA650." Why? The connectors appear to be identical, although the 650 supports ECC memory (but does it require it?) Enquiring minds want to know! --Chuck

27 years, 2 months

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Bootable floppy?

by CLASSICCMP＠trailing-edge.com

>> Is it possible to make a bootable floppy for a VAXStation 2000 or is the >> system too large for the disk? > >Of what? VMS? the answer is yes, sorta. Standalone backup is one case >where it fits on a RX33 (1.2mb 5.25). Maybe 10 years ago it fit on a single RX33. For a recent version of VMS it is more like 3 RX33's. Tim.

27 years, 2 months

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Lots of machines available

by Philip.Belben＠pgen.com

> Last time I said I beat up some PCs, many of you were disturbed. So this > time, I'm warning you before I do it. There are 8 DEC LPv+ 425dx and > 433dx machines. They are all 486 DX with RAM from 0 to 16 MB, some have > hard drives around 200 MB, some should have OS/2. They are being thrown > away because they have miscellaneous problems, and we haven't been able > to fix them. I haven't tried, so I don't know what the problems are. > Anyway, first come, first served. Price is 1.2 * shipping. Memories from 0 to 16MB? If there are any 4MB, 30pin parity simms in that lot, I'll happily pay 120% of shipping for a set of four. Philip.

27 years, 2 months

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console pinout?

by danburrows＠mindspring.com

People looking for MMJ connectors / adapters contact me off list. I have a fair stock of adapters and the crimpers with a few ends. Dan >> Ok, I give up, where the heck does one find the pin-out for the weird >> not-quite-an-RJ-45 connector that connects the console to the VAX? I've got >> a cable that has the weird connetor on it (both ends :-() which no doubt >> plugs right into a VTxxx VAX Console Terminal but I'm more interested in >> something like a serial port of a PC pretending its a VTxxx console >> terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I can >> plug into one of those DB-9 hood things. >> >> >> --Chuck >> >> >> > >I've got a cable with an MMJ on one end and a broken MMJ on the other >and I'm looking for a serial connector with MMJ's on both. > >Wanna swap 'em? > >Bill > >--- > bpechter@shell.monmouth.com|pechter@pechter.dyndns.org > Three things never anger: First, the one who runs your DEC, > The one who does Field Service and the one who signs your check. >

27 years, 2 months

1
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HP 9000 840S

by rigdonj＠intellistar.net

I have a chance to pick up one of these. Does anyone know anything about them? Joe

27 years, 2 months

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2
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Whew!

by roblwill＠usaor.net

Does it smell sorta like fish? That's what the Tandy 1400 that I have smelled like when the HD controller blew. Although, that thing always fishy.... :) -- -Jason Willgruber (roblwill(a)usaor.net) ICQ#: 1730318 <http://members.tripod.com/general_1> -----Original Message----- From: Chuck McManis <cmcmanis(a)mcmanis.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Wednesday, May 05, 1999 8:33 PM Subject: Re: Whew! . > >Yup, it could easily be the remains of a Tantalum cap. Weirdest smell. I >can't believe that the rest of the board could survive something like this >but hey it isn't like the thing is any good as a paper weight! Now to pull >one of the others and figure out what value cap used to live there... > >--Chuck > >

27 years, 2 months

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PDP11 Plessey disk drive info needed

by Jgzabol＠aol.com

In einer eMail vom 05.05.99 21:02:46, schreibt Tony: << > That is EXACTLY what I need - the connector has the letters above imprinted, > and the meaning of the signals I have from the DEC docs. This is precisely the > RK-11 Drive Bus. It's _almost_ the RK11 bus. Not suprising since the Diablo/DRI model 30 was sold by DEC as the RK02/RK03 for a time. I've cabled one up to an RK11-C, and it is, indeed, just a cable. The problem is in the drive select lines. RK11-C's use 1-of-4 code (you assert one of 4 lines, like on a floppy drive). RK11-D's use a 3 bit binary selection code. RK05s can handle either (there's a signal on the connector of an RK05 that is pulled low by an RK11-D to indicate this). RK02's, etc can't. That's why you'll need a couple of chips to do the interfacing. -tony >> Hi Tony, I am aware of that fact. It is of course a very simple decoder. Since I will need to mate two different cables (one from the drive with the 42-pin connector, and another one from the controller with the bus paddle) I will have a little intermediate board anyway, where this can easily be put. First of all, of course, I will need to verify that the Plessey interface is in fact identical to the Diablo one; since the connector is the same, I am in good hope. Regards John

27 years, 2 months

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console pinout?

by CLASSICCMP＠trailing-edge.com

>Ok, I give up, where the heck does one find the pin-out for the weird >not-quite-an-RJ-45 connector that connects the console to the VAX? I've got >a cable that has the weird connetor on it (both ends :-() which no doubt >plugs right into a VTxxx VAX Console Terminal but I'm more interested in >something like a serial port of a PC pretending its a VTxxx console >terminal. I figure I'll cut this cable in half, crimp on an RJ45 that I can >plug into one of those DB-9 hood things. The "weird connector" (DEC MMJ=Modified Modular Jack) is widely available. Perhaps the easiest mail-order source, should you not have any decent local electronics shops, is Digi-Key ( www.digikey.com ).

27 years, 2 months

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core memory

by mbg＠world.std.com

>> Ouch... that image really hurts... > >Yeah, then I spray-painted it neon pink because I didn't like the original >color. Core memory is cool. No... that's K3WL! <barf> 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 | +--------------------------------+-------------------------------------+

27 years, 2 months

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FW: FREE!!! PDP-11/34A Complete System

by kyrrin＠my-dejanews.com

Anyone in or near Philadelphia want a free PDP-11/34A? If so, check this out... -=-=- <break> -=-=- On Wed, 05 May 1999 19:41:05 GMT, in alt.sys.pdp11 you wrote: >>From: moorem(a)bucks.edu >>Newsgroups: alt.sys.pdp11 >>Subject: FREE!!! PDP-11/34A Complete System >>Date: Wed, 05 May 1999 19:41:05 GMT >>Organization: Deja News - The Leader in Internet Discussion >>Lines: 10 >>Message-ID: <7gq6sh$49e$1(a)nnrp1.deja.com> >>NNTP-Posting-Host: 192.112.54.10 >>X-Article-Creation-Date: Wed May 05 19:41:05 1999 GMT >>X-Http-User-Agent: Mozilla/4.5 [en] (WinNT; I) >>X-Http-Proxy: 1.0 x15.dejanews.com:80 (Squid/1.1.22) for client 192.112.54.10 >>Path: news1.jps.net!news.pbi.net!165.113.238.17!pln-w!extra.newsguy.com!lotsanews.com!nntp.primenet.com!news.maxwell.syr.edu!nntp2.dejanews.com!nnrp1.dejanews.com!not-for-mail >>Xref: news1.jps.net alt.sys.pdp11:87 >> >>Free for the taking: Complete PDP-11/34A system in 6 foot 22" rack. >>Includes processor, memory, 2 RL02 disk drives, 1 RK05F disk drive >>(a fixed disk seen as 2 RK05 removables). This unit has been sitting >>in my barn for 10 years or so and is kind of dirty but it ran when I >>parked it! Terms: All or nothing, you pick up. Location: Eastern PA >>(central Bucks county, north of Phila.). Email: moorem(a)bucks.edu >>Thanks!!! >> >>-----------== Posted via Deja News, The Discussion Network ==---------- >>http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own -=-=-=-=-=-=-=-=- Bruce Lane, Owner and head honcho, Blue Feather Technologies -- kyrrin (at) bluefeathertech [dot] com Web: http://www.bluefeathertech.com "...No matter how we may wish otherwise, our science can only describe an object, event, or living thing in our own human terms. It cannot possibly define any of them..."

27 years, 2 months

1
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core memory

by mbg＠world.std.com

>Carefully store? I just nailed it through the center to hang it. Ouch... that image really hurts... 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 | +--------------------------------+-------------------------------------+

27 years, 2 months

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More info RE: KA650 & uVAX

by CLASSICCMP＠trailing-edge.com

>>> one has a board pair M7164/M7165 connected by short cables >>>across the top. >> >>M7164/M7165 is the KDA50 SDI controller, not SCSI. >Ok, I give up, what the heck is this? QDA "Quad" processor. Ok, is it used >for clustering or something? It runs RA70's, RA80's, and RA90's. 4 at a time. >So here are some "skunk box" questions: > >What type of backplane is this? Looks almost like it is Q/CD all the way >across. Yep, you got it! >There is an ethernet interface in one called a DESQA any good? Seems like a >follow on to the DEQNA as it has both 10B2 and AUI ports on it. The other >two chassis both had DELQA's in them. The DESQA is skunk box version of the DELQA. >so that answers that question, and by careful disassembly I can see that >the connectors are correct in terms of how I plugged them, so the only >question is if the fault was a board short or if the power connector is >non-standard. Anyone? It's a perfectly standard connector. The components near the connector are, in this case, probably nothing fancier than some electrolytics for bypassing. Is this reasonable? My TK70's are currently in running systems, and my customers would get angry if I started pulling them apart this time of night :-) -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

27 years, 2 months

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3
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Nec PC-6001A

by dogas＠leading.net

I tripped over one of these for $2 at a thrifty. I like the external and overall design but the video out is responding dissappointingly to initial probes. The only thing on the net I've found at the Obsolete Musuem says it's an 8k ms basic machine with a cartridge slot that's kinda exidyish (joystick ports and a speaker too) and what's this wierd printer interface?. Seems like a cool little machine. Anyone know about it? :) Mike

27 years, 2 months

2
1
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Whew!

by allisonp＠world.std.com

<So the zillion dollar question is, why the heck did the TK70 smoke like tha Likely a tantalum capacitor cooked. I've seen that on various drives. often if removed and the board cleaned up they still operate. They usually short just hard enough that a good power supply will smoke the offending cap. Generally if caught soon enough the no damage save for a bad cap cooked to a crisp. <Is the power connector not a 'standard' one? +5 +12 and GND little plastic <molex hood? Most of the TKs I know use the same power connector as a floppy/hard disk. <could try one without the metal plate but I'm not going to experiment on m <only two remaining drives! I'm guessing there is some "other" type of plat <for these drives. nope, standard plate. Maybe too long a screw? Allison

27 years, 2 months

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FREE!!! PDP-11/34A Complete System

by mbg＠world.std.com

>Xref: world alt.sys.pdp11:6285 >Path: world!blanket.mitre.org!newsfeed.berkeley.edu!howland.erols.net!news-peer.gip.net!news.gsl.net!gip.net!news.maxwell.syr.edu!nntp2.dejanews.com!nnrp1.dejanews.com!not-for-mail >From: moorem(a)bucks.edu >Newsgroups: alt.sys.pdp11 >Subject: FREE!!! PDP-11/34A Complete System >Date: Wed, 05 May 1999 19:41:05 GMT >Organization: Deja News - The Leader in Internet Discussion >Lines: 10 >Message-ID: <7gq6sh$49e$1(a)nnrp1.deja.com> >NNTP-Posting-Host: 192.112.54.10 >X-Article-Creation-Date: Wed May 05 19:41:05 1999 GMT >X-Http-User-Agent: Mozilla/4.5 [en] (WinNT; I) >X-Http-Proxy: 1.0 x15.dejanews.com:80 (Squid/1.1.22) for client 192.112.54.10 Free for the taking: Complete PDP-11/34A system in 6 foot 22" rack. Includes processor, memory, 2 RL02 disk drives, 1 RK05F disk drive (a fixed disk seen as 2 RK05 removables). This unit has been sitting in my barn for 10 years or so and is kind of dirty but it ran when I parked it! Terms: All or nothing, you pick up. Location: Eastern PA (central Bucks county, north of Phila.). Email: moorem(a)bucks.edu Thanks!!! -----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own

27 years, 2 months

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More info RE: KA650 & uVAX

by mbg＠world.std.com

>>M7164/M7165 is the KDA50 SDI controller, not SCSI. > >Ok, I give up, what the heck is this? QDA "Quad" processor. Ok, is it >used for clustering or something? It is a KDA50-Q, Qbus to MSCP disk controller... >KFSQA - Q22 DSSI Controller, the drives hiding in the cabinet are two >RF71's. So it looks like 1.6GB about of disk space. Of course I have no Nope, KFQSA is a single quad board... The machine may have had one in the past, but not now... do NOT use a SCSI cable/terminator with those DSSI drives... >What type of backplane is this? Looks almost like it is Q/CD all the way >across. Yes, Q22/CD all the way... >There is an ethernet interface in one called a DESQA any good? Seems like >a follow on to the DEQNA as it has both 10B2 and AUI ports on it. The >other two chassis both had DELQA's in them. DESQA = DELQA with s-box handle (essentially). 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 | +--------------------------------+-------------------------------------+

27 years, 2 months

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PDP-8 M8652...

by allisonp＠world.std.com

Quick question of the PDP-8. I have a M8652YA, I'd my bet that it's similar if not the same as M8655. Can anyone confirm? A schematic, chip locator and a pinout of the connector would help too. Allison

27 years, 2 months

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Cosmac ELF article in Popular Electronics

by fauradon＠mn.mediaone.net

I sent another message about my scans that was rejected by the listproc (had a command keyword in the first line!) I scanned at 100 DPI in 16M colors then saved as JPEG and tada! I don't know what the deal is, what color resolution did you use? I believe JPEG is better at compressing full color images than lower color depth one. I used an Artec as6e scanner and Paint Shop. I was goin to do some color reduction on them but when I saw the size I didn't think it would be necessary. Francois >Man, how'd you get such nice scans!? And they even came out smaller than >my scans. What scanner are you using, and what DPI did you scan at? > >Sellam Alternate e-mail: dastar(a)siconic.com

27 years, 2 months

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mainframe for sale - not general purpose machine.

by kstumpf＠unusual.on.ca

>>Mohawk Data Systems Mainframe SUPER 21 > Just to help out prospective buyers. MDS made data entry systems, not general purpose computers. Having said that, the guts of the Super 21 is an ATRON (now there's a popular name eh) minicomputer, but it was twisted and shaped, especially the operating system to accept multiple data streams and organize them onto 9-track tape or buffer the files on disk for data transmission to a host. It would be an interesting acquisition. ---------------------------------------------------------------------------- ------------------------------- Kevin Stumpf * Unusual systems * www.unusual.on.ca +1.519.744.2900 * EST/EDT GMT - 5 Collector - Commercial Mainframes & Minicomputers from the 50s, 60s, & 70s and control panels and consoles. Author & Publisher - A Guide to Collecting Computers & Computer Collectibles * ISBN 0-9684244-0-6 .

27 years, 2 months

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Whew!

by cmcmanis＠freegate.com

In classic fashion it appears the TK70 drive committed suicide in order to save the circuit breaker the trouble of tripping. Sigh. After letting the thermal overloads cool off and reset, I brought the system up one board at a time (first CPU+MEM) then CPU+MEM+Ethernet, then CPU+MEM+Ethernet+DISK, etc. Lastly I plugged power back to my disks and got a complete boot. The TK70 is toast, a component near the power connector is ash as far as I can tell (and boy does it smell!) The drive mechanism appears to be intact and is available to anyone for 1.2*cost of shipping. (nice formula that) So the zillion dollar question is, why the heck did the TK70 smoke like that? The interconnect between the controller and the board says "This Side DOWN" and that was connected with the label against the PCB (which makes it lower relative to the top of the drive) Is the power connector not a 'standard' one? +5 +12 and GND little plastic molex hood? The other change was I used a skid from the disk drive. The metal plate on the bottom touches the screws, but it did not appear to contact the PCB. I could try one without the metal plate but I'm not going to experiment on my only two remaining drives! I'm guessing there is some "other" type of plate for these drives. --Chuck

27 years, 2 months

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HP 9845 and space schuttle program was Re: Any HP 9845 Desktops Still In Service?

by rigdonj＠intellistar.net

I got this from a guy that used to use the HP 9845 calculator and thought this group might be interested. > >On Thu, 29 Apr 1999, Joe wrote: >> What kind of work did you do with the 9845? Do you still have anything >> for them? > >Joe, > >There's no trace of anything to be found...not even for the HP 9000/520 >used to migrate some of my applications. Let's see if you'll regret >asking me what I did with it? :-) > >I actually used the 9845B (Model T) for Space Shuttle flight support >(STS-2 through STS-24). I worked at Rockwell International Space Systems >Division in Downey, California (now owned by Boeing). I started out in >1979 doing bean-counting work. I wrote BASIC programs that create bar >charts, plots, and tabulated data for the Flight Systems Design and >Performance department. My manager, Bill Schleich, was the one who >developed the shuttle's roll maneuver shortly after lift-off. > >Most (99.9%) of the engineers were IBM/TSO die-hards because they were >old Apollo guys. They considered the HP 9845 to be a toy, but they were >really afraid of it. Some of those guys preferred to use a printable >tele-type terminal over CRTs! > >On the first shuttle flight there was unexpected lofting of the vehicle >that we didn't account for in our trajectory predictions. Finally an >engineer named David Pearson was able to trace the problem down to us not >having up-to-date atmospheric data (our mainframe trajectory analysis >programs used montly weather tables). > >Bill Schleich was also Dave Pearson's manager and he appreciated the >power and versatility of the microcomputer...it helped that I impressed >him with fancy graphics on the internal thermal printer (mainframe >hardcopies of graphics had to be trucked from Seal Beach - about 20 miles >away). > >Previously, I crossed-over to doing some small engineering studies where >I'd plot data, etc., using the 9845. But the big project was for the >flight support task! There was a lady named Kathy O'Connor who did some >cool graphics with the robotic arm against a stunning line-drawing of the >shuttle in X-Y-Z drawings. > >Anyway, to shorten this story, we had the launch site send us FAXes of >their weather balloon data (no FTP in those days) for weeks, days, hours, >and up to 15 minutes before launch. We had an HP 9872A plotter that also >had a digitizer sight. I wrote an interactive program to have an >engineer align the FAX on the plotter's plate and digitize points along >the different data lines. > >The points were stored in arrays and fed to a cubic-spline interpolation >program to recreate the line with more (smoother) points. The output was >formatted into lines to be uploaded to the IBM mainframe where our big >number-crunching trajectory analysis (M-50) program ran...it was much too >large for the 9845 to even dream of running. > >The data went out over a GTE 300-baud modem that was about as large as >one of today's VCRs. HP provided the (BASIC) software to do the actual >file transfer and communications with the mainframe. Someone else wrote >the programs on the mainframe to capture the uploaded data for feeding >into the M50 program. > >When the M50 finished, it put the data back into tabulated form and >downloaded it, one line at a time, to the HP. I wrote a suite of >programs that read in the captured data and parsed it into data arrays >which were plotted on the CRT for quick "DUMP GRAPHICS" snap-shots. We >also used the 9872 4-color plotter for comparison plots but the thermal >printer plots were needed quickly. > >Believe it or not, the process was fast enough that we once actually had >plots for T-15minute winds in time to run downstairs in Rockwell's >mission control room (3rd or 4th backup to NASA's MC in Houston) and see >a live launch on live NASA video feeds, including infra reds. > >After about the 5th shuttle flight, I was no longer on-call and other >engineers (all older than me because I was only 21 in 1981...I started >programming professionally right out of high school) were following my >procedures. I continued to make modifications for new features, etc., >until the 10th flight...I wrote every single byte of code for that suite >of programs except for the package to communicate over the modem! > >I had transferred to Seal Beach a few flights before Challenger >exploded. When I heard about it, I called one of the engineers >responsible for the "Day of Launch Flight Support Effort" and he told me >that that was the first flight that they didn't run the program (except >for STS-1 of course because we didn't know we needed it). > >They wouldn't have seen anything strange even if they had run the >program...but I like to imagine that my code would've warned them! :-) > >It's been a long time since I had a chance to brag about that. Thanks >for asking. BTW, I was the system administrator for that particular >9845. There were at least 3 others managed by different groups. I had >access anytime I wanted or needed it. As a result, I ignored the Apple >II, IBM PC, etc., until I migrated to the HP 9000/520. > >But even with the 9000/520 being such a step up, I bought an Amiga in >1986 and have been in love with Amigas ever since! > >Visit http://www.amiga.com or http://www.amiga.de if the first one is >down. > >Later, >David > >_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ >_/_/ David C. Waters _/_/ Integrated Business Solutions _/_/ >_/_/ Multimedia Business Answers _/_/ Video Audio CD-ROM Publishing _/_/ >_/_/ E-Mail: mbanet(a)netcom.com _/_/ World Wide Web and TV Access! _/_/ >_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > >

27 years, 2 months

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mainframe for sale (NC)

by SUPRDAVE＠aol.com

Not sure of the type or kind or whether it's even old enough, but you figure it out. reply to person below please begin pasted text: >Mohawk Data Systems Mainframe SUPER 21 >old mainframe (HD says "Built in 84") > Haven't started playing with it yet, has two big floppy drives (10 inch?) >Monitor, keyboard, 2 printers, cabling, lots of other goodies. >Make me an offer. >Don't know if it even works... yet. But.. if it does, the price goes up the longer I work >on it. > Judging from the size of the cooling fans on it, it could probably be used as a >space heater also. <grin> >Jim jpfenske(a)intrex.net

27 years, 2 months

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Dec RL01 drive problem

by CLASSICCMP＠trailing-edge.COM

> 1. Drive starts to spin up, but it's obvious by looking at the spindle of >the drive motor, that the motor never reaches full speed. > 2. After about 5 seconds, the drive slows some, and the heads attempt to >load. If the drive never reaches full speed, then the heads aren't supposed to come out. This indicates a problem with the servo control board (the one near the spindle motor) perhaps. > 3. The heads then chatter back and forth. They appear to move in about .25 >inches and then retract. > 4. This continues until I spin down the drive. > >If I pull the pack out, and hold the switches closed manually, the motor >does reach full speed (although the heads never attempt to load). "Full speed reached" (and speed regulation in general) is controlled by the little magnetic gap sensor you see near the hub spindle and the notches in the RL01 cartridge's hub. >If anyone has any suggestions as to what might be the problem, I really >apprecite some information. After the simple mechanical checks others have suggested, I'd recommend trying a replacement servo control board. Tim.

27 years, 2 months

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core memory

by allisonp＠world.std.com

<I collect core memory, found a lead to you on the Web. < <Got some you wanna part with? < <Gary Sloane <SB/US Engineering Inc. <sloane(a)sbus.com What do you do with it once you have it? Many of us collect core but it's to support working system that were designed for it. Allison

27 years, 2 months

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Yowee! Kazowie!

by cmcmanis＠freegate.com

This is one of those times where "winning" an auction is wild. So I tested pulled the KA650 (I know the KA655) would be better, and the third party memory boards out of one of the BA213 chassis and replaced the KA630 and 12MB(4+8MB) of RAM. Question: The KA650 ram linkage cable has slots for four RAM boards, the KA630 one has slots for two, I used the KA650's cable and it hangs over the next couple of Q/Q slots, can I use the KA630's cable? They seem to have the same number of pins but I haven't counted. I power up this puppy and right away it's different because it starts at #40 and starts counting down. The banner says: KA650-A V5.3, VMB 2.7 Performing normal system tests. Then I boot the current image of netbsd on it and it reports 64MB of "real" memory, so these memory boards are 32MB each not 16MB each. Cool! Then I power it down, and install one of the TK70 drives in place of the Exabyte that has been giving me some trouble. Reboot and the kernel finds the drive and all is well. Power it down again so that I can button it up, go back into another room where I'll tip into it without the noise, power it up get the >>> prompt and type 'b' but it isn't echoed. Go back to the machine room and the vax is dark and the room smells. Yikes! Turn it off, pull all the boards, inspect them for damage. There isn't any, turn on the power with only the CPU board installed, and notice a "light" in the TK70 drive. Now since there aren't any light bulbs in the drive I look closely and sure enough it is flames around a resistor in there. Off goes the power, out comes the TK70, try it again, but no go, the DCOK like don't light and there is still a vague smell coming from the chassis. Kazowie! So, does anyone have the printset for the BA123 power supply? I'm pretty sure the boards survived, the TK70 I'm not so sure about. I sure wish I knew why it lit up like that. --Chuck

27 years, 2 months

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Lots of machines available

by max82＠surfree.com

Last time I said I beat up some PCs, many of you were disturbed. So this time, I'm warning you before I do it. There are 8 DEC LPv+ 425dx and 433dx machines. They are all 486 DX with RAM from 0 to 16 MB, some have hard drives around 200 MB, some should have OS/2. They are being thrown away because they have miscellaneous problems, and we haven't been able to fix them. I haven't tried, so I don't know what the problems are. Anyway, first come, first served. Price is 1.2 * shipping.

27 years, 2 months

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core memory

by ethan_dicks＠yahoo.com

--- sloane <sloane(a)sbus.com> wrote: > I collect core memory, found a lead to you on the Web. > > Got some you wanna part with? I might have a core stack that is available. I have some planes from >from a PDP-8L, part of a 4k x 13 bit memory (12 plus parity). It was built around 1968. Offers? -ethan _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

27 years, 2 months

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PDP11 Plessey disk drive info needed

by Jgzabol＠aol.com

In einer eMail vom 04.05.99 21:47:46, schreibt Tony: << > I would certainly appreciate the Diablo pinout - if the pin layout is the > same, I would expect the signals to be the same , at least something easier > to check stan starting from nothing ! OK, here you are. The pin layout on the connector is something like : A B C D E F H J K L M N P R S T U V W X Y Z AA BB CC DD EE FF HH JJ KK LL MM NN PP RR SS TT UU VV WW XX For a total of 42 pins (I am not sure if that's looking at a plug or a socket, but it should be a start). A Read Clock B Write data and clock C Read data D Ground E Read gate F Ready to read/write/seek H Write protect input J Track select 8's K Erase gate L Drive select 1 M High density N Track select 2's P Write protect status R Drive select 2 S Pseudo sector mark T Track select 64's U Drive ready V Drive select 3 W Sector marks X Track select 16's Y Index marks Z Drive select 4 AA Head select BB Track address 128's CC Sector address 1's DD ground EE Write gate FF Track select 32's HH Write check JJ Sector address 2's KK Sector address 4's LL Track select 1's MM Sector address 8's NN Address acknowledge PP +5v for cable terminator RR Track select 4's SS Strobe TT Seek incomplete UU Sector address 16's VV Restore WW ground XX Illegal address If you need descriptions of any of those, let me know - I have the full service manual for the Diablo. > > Thanks > John > -tony >> That is EXACTLY what I need - the connector has the letters above imprinted, and the meaning of the signals I have from the DEC docs. This is precisely the RK-11 Drive Bus. Thank you _VERY_ much! Regards John G. Zabolitzky

27 years, 2 months

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KA650 & uVAX

by CLASSICCMP＠trailing-edge.COM

>I've heard its possible to "upgrade" a uVAX II to a uVAX III by replacing >the KA-630 with the KA-650 CPU. Now I've looked at a KA-650 and it has a >metal cover over its end and a small RJ-xx like plug in it. The KA-630 has <two IDC connectors that go to the 630CNF console plug in the BA123 world >box. Do I also need a conversion kit for the KA-650 or is the CPU with >connectors hiding behind this metal facade? You have the skunk box (BA213-type cabinet) version of the KA650. The skunk box deals with FCC compliance by having a metal cover over each board (or board set). As long as you aren't particularly worried about neighbors turning you in to the FCC, you're welcome to cable up the console any way you want. The console bulkhead on the skunk box KA650 uses DEC MMJ connectors (offset-tab modular pluts) for the serial cable, a rather standard thing in the DEC world. You'll also need KA650-compatible memory to go along with the CPU; KA630 memory doesn't work with the KA650 CPU. -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

27 years, 2 months

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Pertec interface

by emu＠ecubics.com

Hi all, Anybody knows, where i can find a good description & pinning of the pertec tape interface ? thanks a lot, emanuel

27 years, 2 months

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