test-drb December 2008

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286 discussions

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Happy DEC-10 day...

by mbg＠world.std.com

15 years, 5 months

anyone have/can make an openvms (vax) ISO?

by dgahling＠hotmail.com

I just moved, and all my stuff is still packed away, including all my openvms CDs, which kinda sucks because I sorta need one right now. in the interim I could get away with an ISO, if someone has one. Any version would do, so if there's someone on the list that has one or could make one, it'd be much appreciated. As I said, I own the originals, bought from montagar, just not sure which box it's hiding in... Dan. _________________________________________________________________

15 years, 5 months

PDF (Was: something irrelevant given the thread's migration)

by ajp166＠bellatlantic.net

> >Subject: Re: PDF (Was: something irrelevant given the thread's migration) > From: "bfranchuk at jetnet.ab.ca" <bfranchuk at jetnet.ab.ca> > Date: Wed, 10 Dec 2008 17:31:11 -0700 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Jim Brain wrote: >> >> Can't go with the "TXT FOREVAR" folks, though. >SIX BIT ASCII IS STILL FINE --- LOOK AT ALL THE >RARE L@@K ADS ON EBAY! >> And to your other point, to be consistent, I must concur. It's a >> hobby, and anything goes. I was only asking that a disclaimer be >> applied, since the difference between "I code this up on my own >> because it's a hobby and I think it's fun" and "I don't trust >> pre-written apps and you should not either. Write them yourself all >> times" is sometimes hard to distinguish. >> >> Jim >> >Any good leads as am still looking for a small boot strapable langauge >here. Tiny C will not work >as my instruction set does NOT have register to register operations. I >plan to have a wopping >48Kb system as that was BIG memory 1975 ish. I'd suggest Tiny Basic as a starting point. If you need less than that how about a machine level monitor like ODT? Generally that's where I've started for any machine, some form of keyboard monitor. It's also a starting point for IO that can be used by more sophisticated software or a language. Allison > >

15 years, 5 months

Source for MMJ cables.

by tiggerlasv＠aim.com

I don't have a source for MMJ cables, but I do have a US/Domestic source for MMP's (the offset modular connectors). . . http://www.gruber.com/GruberInd/pg.asp?FeatureID=38 They are .14 / each for flat cable, and .41 / each for round cable. Last I checked, they don't ship internationally. There are two different styles of DecConnect cables; both inverted, and not inverted.?? The only difference of course, is that one connector is flipped on one end. When used with genuine DEC adapters, one?style worked for printers (DCE), and the other style worked with terminals (DTE). Back in the early 90's, our office used uVax 2000's, connected to VT220's. along with various printers, connected using DEC MMJ <> DB25 adapters. You couldn't simply swap the DecConnect cables because of the inverted MMP's on some of the cables. All of our cabling and adapters were unmodified DEC products. If you're really in a pinch, you can always pop the connector off of one end of the cable, and re-crimp it by hand. It's a bit cumbersome, but you can use a thumb-tack to lift the gold contacts out of the connector, and then use a small flat-blade screwdriver to push them back in. Just be careful not to stab yourself in the process.? ;-) As info. . . T

15 years, 5 months

Source for MMJ cables

by tshoppa＠wmata.com

Andrew writes: > A little while ago I bought a "new" 10ft MMJ cable from That Website. > Today I came to use it and discovered it was a crossover cable. All MMJ cables are supposed to be crossover cables. If you are using DB-9 or DB-25 adapters on the ends of the MMJ's, then they have to be appropriate to the wiring for the device. Examples: Rdy Out TX+ TX- RX- RX+ Rdy In Adaptor Gender 1 2 3 4 5 6 Use with: -------------------------------------------------------------------------- H8575-A F 20 2 7 7 3 6&8 VTxxx terminal H8571-C M 6 3 7 7 2 20 Digital printer H8571-D M 6 3 7 7 2 20 Modem H8571-E M 20 2 7 7 3 6&8 Female terminal or LaserWriter -------------------------------------------------------------------------- If you've got the wrong adapter, you may be able to open it up and swap around pins 2&3, 6&20. Some are shells you can open up and use the DB-pin-remover tools to swap things around, others are molded solid and you can't take them apart so easily. MMJ was a nice concept for serial cables. Tim.

15 years, 5 months

Raised floors

by roger.holmes＠microspot.co.uk

On 10 Dec, 2008, at 05:53, cctalk-request at classiccmp.org wrote: > Message: 25 > Date: Tue, 9 Dec 2008 21:08:36 -0500 > From: "William Donzelli" <wdonzelli at gmail.com> > Subject: Raised floors > To: "General Discussion: On-Topic and Off-Topic Posts" > > Here is an aspect of computer history not yet touched - when did the > industry standardize on the 2 x 2 raised floor? Certainly they were > common in the 1960s, but were they standard in the 1950s? An interesting question. I would have said they were common in the late 60s but not in the early 60s. None of the 1301s (built 1962-65) I have seen were on raised floors, maybe because 700 square feet of raised flooring would have been expensive, but I suppose not compared to 247,000 pounds for the computer itself. When I first started programming them in 1969, I think all the ones I visited were on raised floors, had 'tacky mats' and air conditioning, which often blew out of the floor. On the other hand, when I went to work for a company which made computers (in 1974) and which used them extensively for software development, there were no raised floors, no tacky mats and only one of the computer rooms had air conditioning because it was the only one to used exchangeable hard disks, the rest used paper tape or cartridge mag tape or one inch analogue tape for audio data which was used as test input to sonar processing computers. Just my experience, maybe not typical, and in the UK. Roger Holmes

15 years, 5 months

trying to use AT&T VFD display module

by jeffj＠panix.com

I salvaged several AT&T/Lucent/Avaya D401A Digital Display Modules, apparently from a Definity phone system. The label says D401A AT&T 89338 series 1 The module has 8 touch-buttons and LEDS and an Itron DC 405A2 VFD (one line of 40 characters, each char a 5x7 matrix) I'd like to use the entire module since it has a microcontroller and power supply, but I have no clue as to the interface. Any help would be appreciated, starting with pinout. I really need the internal programming document with all the commands :-( I'm trying to strike a balance between researching the device to use completely "as is" vs. salvaging entire assemblies vs. salvaging just bare parts. Sometimes it's easier to just redesign it and salvage as many subassemblies as possible than taking the time to reverse engineer the entire gadget :-( Googling around found: "This digital display module ... adds a large easy to read 40 character display to the top of the 7405D or 7434D voice terminals. AT&T/Lucent systems compatible with this module are Definity G1, G2, G3, ECS and ..." Thanks in advance -- Jeffrey Jonas jeffj-at-panix-dot-com

15 years, 5 months

Raised floors

by wdonzelli＠gmail.com

Here is an aspect of computer history not yet touched - when did the industry standardize on the 2 x 2 raised floor? Certainly they were common in the 1960s, but were they standard in the 1950s? -- Will

15 years, 5 months

HP Integral PC 82971A EPROM/ROM module - anyone have docs?

by glen.slick＠gmail.com

Anyone have docs on the 82971A EPROM/ROM module for the HP Integral PC? Anyone have one of these that they have in use for some purpose? I rediscovered one of these while cleaning up some piles of stuff. I'm curious if there is anything interesting that can be done with one of these.

15 years, 5 months

ETH Lilith Emulator available

by julianskidmore＠yahoo.com

Hi Jos, Well done! At last I've been able to run EmuLith on my 17" G5 iMac under Panther. No idea how it compares with the original performance, but after recompiling with O2 it runs fairly quickly. Here's my comments: 1. Well, first, a big congrats!!!! 2. Why is it white on black when all the photos show black on white? 3. I used Sara to write HelloWorld.MOD, but Couldn't compile it (Disk5.IMG). It complains about missing InOut (though InOut.OBJ is there). Compiler runs though :-D 4. 768x592 seems to be partially implemented, it'd be nice to fully implement it; though I'll try and run it on my external display. (I get around my inadequate display by pressing RETURN ;-) ) I presume the microcode is different for the smaller display, but the OS and libraries are almost the same, since I guess the 4:3 Liliths were still used when the 7:9 ones appeared. 5. Lara wouldn't run, problem with DiskWindows. Your user-base is increasing in leaps and bounds :-D -cheers from julz @P

15 years, 5 months

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test-drb December 2008