test-drb

test-drb@ccmp.vtda.org

101090 discussions

by vintagecomputer＠bettercomputing.net

That sounds interesting. ?I imagine they'd be worth even more than an 8/E? Sent from my Samsung device -------- Original message -------- From: william degnan <billdegnan at gmail.com> Date: 2016-11-29 5:13 PM (GMT-08:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: Thinking about acquiring PDP stuff On Tue, Nov 29, 2016 at 7:28 PM, jim stephens <jwsmail at jwsss.com> wrote: > > > On 11/29/2016 3:51 PM, Noel Chiappa wrote: > >> There might be a rare exception (I see the guys in Mahwah selling a PDP-8 >> chassis, and also a front panel with switches, and it_might_? be possible >> to >> round up all the boards - but that's more like the exception than the >> rule.) >> >>???????? Noel >> > He sold the boardset first, now has broken up part of the rest. parts of > the backplane were sold earlier as well. > > I've watched this vendor for a while and bought some things, which were > clean.? He also sold a complete 8/E > recently and as noel said, went for $$$ > > thanks > Jim > I am working on liberating 10 PDP 8i's...but the guy has fallen off comms. I plan to make a trip to the location, see what I can do.? I don't want these, just want to help find a good home for them. b

8 years, 5 months

Woz signed Apple IIGS system for pickup only near Dallas

by sales＠elecplus.com

http://dallas.craigslist.org/ndf/sys/5890446928.html

8 years, 5 months

Woz signed Apple IIGS system for pickup only near Dallas

by COURYHOUSE＠aol.com

I saw one in a thrift shop years ago... I seem to remember Woz a stenciled on or printed on In a message dated 11/29/2016 6:40:43 P.M. US Mountain Standard Time, ian.finder at gmail.com writes: I believe the "Woz" edition was actually produced in greater quantities than the normal one. Either way, even if it were a real signature- Woz is known to have low enough standards with a sharpie that his autograph may in fact devalue an item! - Ian On Tuesday, November 29, 2016, Electronics Plus <sales at elecplus.com> wrote: > http://dallas.craigslist.org/ndf/sys/5890446928.html > > > > > > -- Ian Finder (206) 395-MIPS ian.finder at gmail.com

8 years, 5 months

VAX 4000-100 QBUS cables

by jnc＠mercury.lcs.mit.edu

> From: Peter Coghlan > Interrupts would be great to have If you decide you need interrupts, the DLV11 (MP-00055) has a simpile interrupt circuit built out of flops and gates. > However, I am puzzled by the BPOK and BINIT signals being connected to > U7 even though they do not seem to get used ... I wonder is this just > because two tranceivers were left over and they might as well have > something connected to them that might come in handy later or is it > because I am failing to understand something properly? Neither, but your first one is close! :-) Actually, that design started as a CAD file (for KiCAD) that I got from Dave B; I munged on it until it was what I wanted. Those two signals were connected to that transceiver in Dave's original circuit; my design doesn't (as you discovered) actually use BPOK or BINIT, so they just stayed connected up, but unused. > there are rather more than 50 QBUS signals listed on the top right of > the circuit diagram. As Glen indicated, it actually takes 2 50-pin connectors. > I suppose the power rails and those labeled "spare" are likely > candidates for omission. I don't think they'd have carried power through that connector. The spare lines might well be connected through. I haven't checked the pinout of the 50-pin Berg headers (which were the original, the 'D' connectors came later), but if they followed UNIBUS precedent, every other wire in the flat cable will be a ground, to help minimize cross-talk between lines with signals on them. > I was hoping that there would be lots of signal pairs like SCSI Well, the QBUS wasn't designed to go through a cable, originally it was backplane only; so it doesn't have differential pairs, or anything like that. Noel

8 years, 5 months

dot matrix printers to be thrown out near Denver

by sales＠elecplus.com

Might already be gone, located in Longmont near Denver. Give him a call! $25 - Epson DXF5000 ( Longmont ) near denver We have some wide carriage dot matrix printers. They work and they are worth next to nothing. Come and get them intact or search the dumpster for parts If I have to throw these IBM, Epson and OKI dot matrix printers in the trash - they will be in pieces no larger than a candy bar. I promise to break them up so that no one can ever use them. I might give them away for free, but our dumpster will contain tiny bits if you think waiting is the better plan 303-651-7919 634 Main Longmont

8 years, 5 months

Tektronix DVST Terminals & 4052's in sad shape

by pete＠petelancashire.com

http://petelancashire.com/gallery/main.php?g2_itemId=7780 If interested in details click on thumbnail the click on the picture or upper right corner select the full size Will try to get and at least salvage the CRT's -pete

8 years, 5 months

Thinking about acquiring PDP stuff

by vintagecomputer＠bettercomputing.net

Apart from my Rainbow I don't really have any DEC stuff. ?So I was thinking about trying to acquire something early 70s... like a PDP8/E or similar. ?I don't see them for sale often and I notice that DEC stuff is hotly contested on ebay. ?Wondering what a complete 8/E would run in working or non working condition, or if it is feasible to buy in pieces (I did this with some other equipment I have.. allowed me to spread out the cost.. but is dependent on parts availability). Advice/thoughts most welcome. Sent from my Samsung device

8 years, 5 months

DEC kit on offer in Sussex, England

by shadoooo＠gmail.com

Hello, I'm interested in Rainbow and DecMate, specially if there are monitor and keyboard. Eventually also vax2000 parts, for possible repairs. Thanks Andrea

8 years, 5 months

DEC M9312 Configs for a 11/40

by jnc＠mercury.lcs.mit.edu

> From: William Degnan > hit LOAD ADDR > address light 16 comes on, RUN/PROC/BUS/CONSOLE lights stay on. According to the KD11-A manual (pg. 3-2) the address lights on the console are driven directly from the CPU's Bus Address Register. So you've got an issue there. > If I hit START light 16 turns off. So it's not wedged on in the CPU. Maybe a console switch issue, then? > From: Josh Dersch > Try depositing a known word into a specific memory address, like 1000 > using the console PROM, then try reading it back with the front panel. The console emulator doesn't directly support access to memory about 56KB (as would be, with address bit 16 on). To look at that memory, one has to set up the MMU and turn on mapping - there's a section in the M9312 manual which shows how to do it. Noel

8 years, 5 months

VAX 4000-100 QBUS cables

by glen.slick＠gmail.com

On Nov 29, 2016 9:22 AM, "Noel Chiappa" <jnc at mercury.lcs.mit.edu> wrote: > > > I have an M9405-PA. It has one male and one female 3-row 50-pin > > D-shell connector. > > That's on the metal plate, right? The board itself should have a 2x25 > Berg header. Same deal as a few other S-box handle boards. It's a standard dual wide M9405 board riveted to the S-box handle frame and a dual wide blank spacer for the CD half of the slot. The two 50-pin D-shell connectors on the metal frame are connected to the two standard connectors on the base M9405 board by two short ribbon cable jumpers.

8 years, 5 months

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