test-drb September 2011

test-drb@ccmp.vtda.org

159 participants
198 discussions

WTD: 0.156in 2x10 or 1x10 edge connector for Motorola/Displaytek M1000-355 CRT

by classiccmp＠philpem.me.uk

Hi guys, I just picked up a Motorola M1000-355 CRT monitor (5in diagonal open-frame industrial "thing", circa Jan 1987 so almost as old as I am!) at the hamfest today.. Problem is, I don't have a suitable mating connector for the card edge connector... It's a 10-pin single-row card edge connector, with a 0.156in pin pitch, although I suspect a dual-row (20 pins total, 10x2 layout) would work fine too. These are listed as "US stock only" or "Discontinued, obsolete" by every supplier I've tried... Does anyone have one squirrelled away in a box somewhere which I could buy or have (he says with a cheeky grin) ? Or possibly a lead on a source for one or two of these, ideally with keypins (but the latter isn't essential)? I'd also rather like a copy of the datasheet for the monitor module if anyone has it... I have a pinout (it's the standard 10pin pinout as posted by Tony Duell quite a while ago -- IIRC either the Kaypro or Osborne monitor uses the same pinout) and a sneaking suspicion that it's CGA-spec, but no hard proof. I do know that it pulls 12V DC at about an amp -- the first value is printed on the PCB, the second was provided by the meter on my bench supply! Cheers, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

12 years, 10 months

MicroPLATO Pascal Course

by vintagecoder＠aol.com

Now all you need is a couple hundred square feet of raised floor, 20 tons of A/C, some 3 phase, and a nice CDC box! ------Original Message------ From: SPC Sender: cctalk-bounces at classiccmp.org To: General Discussion: On-Topic Posts Only ReplyTo: General Discussion: On-Topic and Off-Topic Posts Subject: MicroPLATO Pascal Course Sent: 19 Sep 2011 06:19 Just arrived to PLATO World, I've encountered this while lurking: http://www.ebay.co.uk/itm/1983-Control-Data-CDC-PLATO-Pascal-CBE-CAI-Course… Regards SPc.

12 years, 10 months

Opening up an RD54 Disk

by robert.jarratt＠ntlworld.com

I want to get the lid off one of my RD54s. Having unscrewed all the 12 torx screws, the lid still seems to be held down by something. I have probed around for any screws under the label but only found one curious red plastic thing. Is there a trick to this or is it going to be just the rubber gasket that is holding it down? Thanks Rob

12 years, 10 months

Soldering stations - OKi-Metcal, Pace or something else?

by classiccmp＠philpem.me.uk

Hi guys, Well, we've got a thread on desoldering kit, so I'm going to start one on soldering stations... :) It seems my love-hate relationship with my Antex 660TC soldering station has finally become one of almost pure hate. I sat down to assemble a couple of DiscFerret boards tonight, and after about 40 minutes the handle of the iron was too hot to hold. Tried again with the other iron, same story. If I hold it any further back, then the whole thing is completely out of balance... So I figure it's time for a change. Hopefully to something which won't try and roast my fingers. I've narrowed my choices down to two manufacturers -- OKi-Metcal and Pace. This is basically because they're the only two "professional" brands Farnell carry (I did look at some of the Weller soldering stations but they don't look much better than the Antex). I'm looking for something that'll suit SMD work -- ideally one which has "mini-wave" soldering iron bits (aka "hoof" bits) easily available, and is designed for lead-free work. I do run an SnPb line as well, though I'm slowly phasing it out (once I run out of 60-40 solder, which might take a while...!) At the moment the front-runners are: - Pace WJS100 (with TD-100 and Instant Set-Back aka auto-standby). Not overly keen on this one, seems overpriced when compared to other Pace kit (especially when you consider that the WJS only works with certain soldering bits and one type of handpiece) - Pace ST50 + TD100. Seems about the same as the WJS100, but will run the tweezer handpiece and a wider variety of bits. Catch is, I'd have to special-order this from Pace UK if I wanted the ISB option (Farnell don't stock the ISB "cubby" / iron stand). - Metcal MFR-1110. Cheaper than the Pace (or so it would seem), cheaper tips. Also seems to have "auto standby" as standard. What concerns me is that it seems to run at a fixed temperature, though OKi/Metcal claim that SmartHeat makes this a non-issue... I'm not convinced... Has anyone used any of the above, or anything similar? Are there any other brands (or other soldering stations from the above manufacturers) that I should look at? Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

12 years, 10 months

Data I/O 2900 - How good is it?

by mark.kahrs＠gmail.com

The problem with the Unisite is that it needs massive quantities of pin driver cards (17 if memory serves). And the Unisite I own only has ONE. :={

12 years, 10 months

More DEC Bad luck.

by useddec＠gmail.com

Hi Zane, Do you want to get rid of the 90? Paul On Fri, Sep 16, 2011 at 9:14 AM, Zane H. Healy <healyzh at aracnet.com> wrote: > At 8:44 AM -0400 9/16/11, Brian Wheeler wrote: >> >> It brings me to a question: ?are the alpha systems inherently fragile? >> The dead DECStation is an obvious hardware issue due to (probably) a >> leaked capacitor which is understandable due to its age, but the Alphas >> are just hosed in a software kind of way. > > I ran my PWS 433au for several years with a dead PCI slot. ?In fact before I > gave up on it in favor of an XP1000, I believe something else had died. > ?That actaully impressed me. > > My XP1000/667's powersupply died, I had to move the CPU over the the > XP1000/500. > > At the same time, don't get me started on VAXstation 4000's. ?I have a 60, a > 90, and a VLC. ?All three have issues, the 90 won't boot, the 60 is flakey, > and the VLC has a bad powersupply. > > Honestly I need to get things setup so I can powerup and check all my DEC > hardware, it's been months since I booted any of it. :-( ?I simply don't > have the time anymore, and I can't afford to keep a VAX and Alpha running > 24/7. > > Zane > > > > -- > | Zane H. Healy ? ? ? ? ? ? ? ? ? ?| UNIX Systems Administrator | > | healyzh at aracnet.com ? ? ? ? ? ? ?| OpenVMS Enthusiast ? ? ? ? | > | ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?| Photographer ? ? ? ? ? ? ? | > +----------------------------------+----------------------------+ > | ? ? ? ? ? ? ? ? ? ? My flickr Photostream ? ? ? ? ? ? ? ? ? ? | > | ? ? ? ? ?http://www.flickr.com/photos/33848088 at N03/ ? ? ? ? ? | >

12 years, 10 months

GT44/46 brochures

by aek＠bitsavers.org

uploaded now http://bitsavers.org/pdf/dec/graphics

12 years, 10 months

IBM 3174-90R

by spedraja＠ono.com

Hello. I should like to get one picture or photo of one IBM 3174 90R (Tokenway). Someone here has worked with one of these ? Thanks Sergio

12 years, 10 months

mac software on ebay

by aek＠bitsavers.org

this may be worth going after if someone is local http://www.ebay.com/itm/130575280069

12 years, 10 months

Are the HP9100 and HP9810 calcualtors really RPN machines?

by ard＠p850ug1.demon.co.uk

Subjet: line says it really, but I think I should explain... Are the HP9100 and HP9810 calcualtors really RPN machines? I think not. You ahve 3 registers, called X(Keyboard), Y(Accumulator) and Z(Temporary) which appear to be a stack. But it;s not really as stack IMHO. Entereing a number form the keyboard puts it in X, leaving the other 2 registers unaltered. At no time is there an automatic stack lift (AFAIK). THere are functions to effectively push and drop the stack (if it is one:-)) and to roll it round. Arthmetic operations perfrome something like Y:=Y(OP)X. Again, there is no lift or drop, there is no change to any register other than Y. 1-number operations normally do X:=f(X), at least one does Y:=f(Y), though. Again nothing else is changed, no lift or drop. You can get the user manuals from the Austalian museum site if you want ot read up on this... My (considered?) opinion is that it's certainly a postfix machine in that you enter both numbers into Y and X before doing an arithmetic operation. But becuase of the lack of automatic stack operation, it's not an RPN machine? What about the other 'RPN' desktop machines (friden, etc) Any thoughts? -tony

12 years, 10 months

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test-drb September 2011