test-drb September 2002

test-drb@ccmp.vtda.org

217 participants
408 discussions

Printronix P300 Free for pickup (broken)

by mythtech＠mac.com

I have a Printronix P300 printer here in New Jersey that anyone that wants to come pick it up, can have it free. The printer does NOT work to the best of my knowledge. Many years ago we had the 3 phase power coming into the building short across the building power, and it toasted the power supplies to most of the equipment here. This printer was one of the items that died. We had someone in to look at it, and IIRC, they said the transformer was shot and would need to be replaced. They wanted $400 for the job, we didn't want to pay it, so we swapped the printer for a Citizen's dot matrix. I kept the Printronix with the intent of one day fixing it myself, but years later, we no longer have the system it went with (a Zebra and later PCs running PICK OS), so I no longer care about fixing it. I have the printer, a paper basket, and the "Applications Manual" (looks like a normal user manual). I thought I had some extra ribbons for it, but I don't see them (if I find them, then I will include them). The printer is mounted on a rolling stand (I thought that was the only way they came, but the manual pictures it without the stand). It uses wide carriage tractor feed paper. The printer is rated as a 300 LPM (that's Lines Per Minute, so it is WAY faster than your standard 300 Characters Per Minute dot matrix printer). The connector on the back is a Centronics looking connector, and the manual says it is a Parallel printer, but I could have sworn it was connected to a port on the Digi-Board, which would have made it a serial printer. I'm probably remembering wrong as to how it was connected, and it probably is a parallel interface, but I can't say for 100% sure. (I know its replacement was a parallel printer) This thing is large, and heavy, so shipping is out of the question. If anyone wants it, they can come pick it up. I can hold on to it for a while, so it doesn't have to be an ASAP pickup (heck, I've been storing it now for about 8 years, what's another few months or so). I can post a picture if any one is interested. -chris <http://www.mythtech.net>

21 years, 10 months

My collection (Pictures!)

by cmcnabb＠4mcnabb.net

I've posted some pictures of the major pieces of my collection at http://cmcnabb.cc.vt.edu . Shown are the HP9000/832, PDP-8/E, and PDP-11/24. Not shown are the Commodore 64, the Sun SparcClassic, the Macintosh SE, or the Tandy 100 Portable.

21 years, 10 months

Weekly finds

by jbmcb＠hotmail.com

Went to the U of M property office for my bi-weekly Classic Computing collecting endeavour. Picked up a few wierd video and SCSI cables, and an Intel ProShare video conferencing system (Cool camera!) Also an HP 900/something terminal and Centris 650 for parts (Had a cool NI ADC board, too) They had a CDC 9-disc array, looks to be eighties vintage, in a beautiful blue steel-and-aluminum rack. Also had the matching disk pack drive, standard 19" width and REALLY deep. They had some wierd Kodak computer, looked like a Sun pedestal and might have been an OEMed Sun 3 or 4. An HP 16-Track reel-to-reel data recorder for $50, a steal, as it seemed to work fine except for a few burned-out bulbs on the light-up buttons. They still have the big RS/6000 disc arrays and tape backup units, if anyone has a few thou to blow and a semi to pick them up with. Good luck hunting! _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx

21 years, 10 months

Who was looking for old VMS for an 11/750??

by wonko＠4amlunch.net

email me off list. i might be able to help you out. -brian -- <ed> i'm trying to use a windows shell function to move a directory... <ed> and it reports that it failed with the error "the operation completed successfully"

21 years, 10 months

MACRO-11 help

by pete＠dunnington.u-net.com

On Sep 16, 22:15, Jerome H. Fine wrote: > I understand your answer. Under normal situations (when MACRO-11 > source is translated and the actual code is placed into an OBJ file which > is then LINKed), both ways are acceptable. BUT, Patrick was setting up > the program via ODT (see line four). If Patrick did not realize what the ' > character in the string 177566' meant, perhaps he just put 177566 instead > so that the three word instruction became: > 001000 Mov #110,XBUF 012767 000110 177566 > which, of course, is NOT what Patrick intended. However > 001000 MovB #110,@#XBUF 112737 000110 177566 > is correct and does the job. > > So it is not that the first method is incorrect, but for some it might be > confusing. Hmm. I'd argue that it *is* incorrect, or at the very least, bad practice. Relative addresses are meant for situations where the target is a label, indicating something which must move if the code does, like the target of a JSR, or a block of data attached to the code; if you mean to indicate something like a memory-mapped register, which has an absolute and invariant address, you should use absolute addressing. Given that Pat said he was going to enter the code using ODT, I imagine he expected the MACRO output to be the correct numbers to enter. But he used the wrong addressing mode to do that :-) > My personal opinion is that the MACRO-11 program should make the > situation plain, but unfortunately I suspect that MACRO-11 will never > be modified by the present owners. I suspect you're right :-) Besides, the output is meant for the linker, not ODT, and I'm not sure how you could make it really plain that the numerical value in the output is not what the linker will turn it into, without a lot of (usually) unneccessary clutter. -- Pete Peter Turnbull Network Manager University of York

21 years, 10 months

HP CS/80 Instruction Set Programmers Manual (5955-3442)

by steven_j_robertson＠hotmail.com

> >Steve, > > Don't forget to send me the dash number of the 7611 and I'll send you a >list of possible replacement ICs. I'm still trying to find programming info >for them. > > Joe They are 7611-5 _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

21 years, 10 months

Pro380

by dittman＠dittman.net

> I'd like to sell my Pro380. It's pretty standard, and I've got > a mono and color monitor, documentation, and the CP/M card (but > no software for the CP/M card). I'm not sure which version of > the P/OS software I have on floppy, but the latest is downloadable. > Due to the size of all this, I'd rather someone pick up. This > is located in Plano, just north of Dallas, Texas. > > I'm open to offers of cash or trades. I forgot to mention that this Pro380 is the model relabelled as a VAX Console, and includes the board and adapter cable for operation as a VAX console (but no cable to connect from the adapter cable to the VAX). There's also another Pro380/VAX Console box with a bad motherboard included. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

21 years, 10 months

Pro380

by dittman＠dittman.net

I'd like to sell my Pro380. It's pretty standard, and I've got a mono and color monitor, documentation, and the CP/M card (but no software for the CP/M card). I'm not sure which version of the P/OS software I have on floppy, but the latest is downloadable. Due to the size of all this, I'd rather someone pick up. This is located in Plano, just north of Dallas, Texas. I'm open to offers of cash or trades. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

21 years, 10 months

MACRO-11 help

by pete＠dunnington.u-net.com

On Sep 16, 19:47, Jerome H. Fine wrote: > >Patrick Finnegan wrote: > > > I'm trying to get some assembly code to run on my 11/23 by entering it in > > at the ODT, and it seems like I'm having trouble with device I/O > > addresses. > > > > Below is a listing of the assembled code I'm trying - I got the I/O > > address out of a PDP-11 assembly programming book I got from the library. > > Most likely the book was written with a UNIBUS -11 in mind, not a QBUS > > one... is that a problem? No, the console address is the same on all -11s. It's not the address, but the addressing mode you've used. > > 7 001000 012767 000110 177566' MOV #110,XBUF > Jerome Fine replies: > > I see the string 177564' for XSR and 177566' for XBUF, but the > listing does not have the actual value. Depending on the translation, that > could be the problem. > > NORMALLY, in order to avoid problems, I use the code: > 001000 112737 000110 177566 MovB #110, @#XBUF > which forces the output to 177566 no matter what address is used for the > instruction. Note that I also output ONLY a byte. Pat is using PC-relative addressing -- probably inadvertantly. The 67 in that opcode 012767 means mode 6, PC-relative, so the address actually used is the address of the instruction word, plus 4 (for the increment of the PC), plus the value given. It's like an indexed address, but using the PC as the index register, and it'll be 1010 bytes off. As Jerome points out, the correct way is to specify an absolute address, address mode 3, by typing @#XBUF instead of just XBUF. -- Pete Peter Turnbull Network Manager University of York

21 years, 10 months

PDP11/73 (fwd)

by root＠parse.com

Folks, there are 2 PDP-11/73 (LSI 11/73's) as described below in Oregon; anyone interested? (I believe it's Eugene/OR) I believe the cost is $free$ or very nominal. Please reply by Friday of this week, as I promised the guy I'd get back to him in a week. Preference given to people in the area of Oregon to minimize grief for the guy. If you're interested, reply to me and I'll put you on a #1, #2 order. Tell me what pieces you're interested in; first come first served. If no one is interested, the machines' cards will be pulled and shipped to Canada :-) Cheers, -RK > After more than a decade looking at a stack of PDP-11 hardware in > my office, I just summoned the courage to put it on a cart to take > down to the junk heap. Since I am by nature a procrastinator, the > cart still sits in a corner awaiting its fate. So, if you're interested, I > have two LSI 11/73's, fully loaded with 4 (count 'em) MB of ram, > three floppy drives, several hard disks (I can't remember the type > RL02 maybe). > I do still > have 6 of those big 10 mB removable platters. I also have a shelf full of 11/73 > manuals (RT-11). -- Looking for Digital Equipment Corp. PDP-1 through PDP-15 minicomputers! Robert Krten, PARSE Software Devices +1 613 599 8316. Realtime Systems Architecture, Consulting and Training at www.parse.com

21 years, 10 months

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test-drb September 2002