test-drb October 2001

test-drb@ccmp.vtda.org

259 participants
770 discussions

by mhstein＠usa.net

Now that the OT ramblings are dying down, a serious one (sort of): Anybody have a use for one or more Data Products Inc. NC16/250 NetCommanders (Not to be confused with Diamond's NetCommander ISDN adapter)? Need to talk to your 15 vintage RS232 systems in the garage from one terminal? Need to have your single-port computer talk to the 15 terminals throughout your house? Need to have your 16 computers talk to each other about you while you're away? And all at the blinding speed of 19200 baud? Or do you maybe just need another obscure piece of hardware sitting on your mantelpiece? Then THIS IS THE DEVICE FOR YOU! Original cost SEVERAL 1000 $$'s each! A 16 port cascadable RS-232 switch/hub/256K buffer, DCE/DTE programmable, allowing each device to talk to any other, either pre-routed or addressable in the datastream header; simultaneous multiple paths possible, even at different baud rates. Software setup (although they'd need 2 new AA NiCads to remember), unfortunately an austere front panel with no pretty blinkenlights. BUT WAIT! THERE'S MORE! If you order right now, I'll throw in your choice of P/S or S/P converter, parallel or serial buffer, auto printer switch or serial or parallel range extender! Any serious interest? As usual, in the Toronto area, but if ya really can use one of these, unlike the Cromemcos it's almost practical to ship; not very heavy. Might need a few $$'s though, to cover my time in checking one out and copying the docs, since there's only one copy. mike

23 years, 2 months

Floppy Disks

by jdonogh1＠prodigy.net

Where is a good source for 5.25" 360k disks? Also, I need to find some 8" hard-sectored single-sided disks. Thanks.

23 years, 2 months

Dark Tower Pics

by mythtech＠Mac.com

>This is the one I am not sure about. 'Philippines' suggests Texas >Instruments to me. And many TMS1000s did have 28 pins... I am going to go >with that guess for the moment Oh, I'm sorry, I might have forgotten to mention, ALL 3 chips are Texas Instuments (unless someone else used the TI logo back in the early eightys :-) ) >75494 'Hex MOS to LED digit drivers' >Basically 6 inverting open-collector drivers with a common enable input. >This chip is another one that turns up in electronic games as an LED >driver, etc. Makes sense, since there is an LED 2 digit counter/display in it. It is also the chip closest to the LED display >Another standard part >TL496C '9V Power Supply Controller' (the TMS1000 runs at 9V, BTW). >Basically a switching regulator normally used to get 9V from a couple of >primary cells. I guess it can step up the power. The game uses 2 D cell batteries connected in series, so it gets 3 volts input power. Humm... thinking about that, the choke coil could actually be a light weight transformer then (maybe? I'm not an EE, so I am guessing since a trans and a choke both have lots of wire wrapped around a magnetic core) I will have to see if I can get a chance to draw up those schematics, that will help tell more about it I am sure. Heck, I have to take it back apart anyway, I need to either oil the motor, or replace it. The game seems to still be working (thank god no perm damage from the battery leak), but the motor starts to slow and stress at certain points. -chris <http://www.mythtech.net>

23 years, 2 months

punch cards, PPT

by mhstein＠usa.net

Hi Lawrence, Don't know yet what'll happen to the punch & cards; still trying to sort it out, along with the old IBM docs. Will keep you advised if it doesn't go to Erik in Holland or one of the other enquirers. Can't interest you in some 8 ch. punched tape equipment instead? Nice Burroughs optical reader & punch, and a box + of mylar & paper tape, assorted lovely pastel colours and black :) Hope u don't mind if I put this reply on the list, in case someone else can benefit from your tip about the cards. And you haven't told me yet what Cromemco cards you need. mike ---------- From: Lawrence LeMay[SMTP:lemay@cs.umn.edu] Sent: Wednesday, October 17, 2001 6:13 AM To: M H Stein Subject: Re: punch cards I want to eventually connect a card reader to one of my PDP 8's, and thus I would want a method of punching some cards ;) I dont have the room nor the ability to move a large IBM card punch unit, so a small unit would be desirable. I'm still looking for a omnibus card reader interface card. So no, I dont have a specific application, but i'm not looking for something to hang on a shelf and point at occasionally either. I do plan to use it eventually. By the way, it is still possible to buy blank punch cards you know. That guy on ebay who is selling the selection of different types of punch cards does sell them. I think his ebay name was key29 or key26, something like that.

23 years, 2 months

New aquisitions: PCjr (minus power supply) and Amstrad PC 6400

by mythtech＠Mac.com

>How much should a PCjr PSU run me? I will do some digging, I *might* still have a power supply or two kicking around. I had shelves full of PCjrs not to long ago, and I threw out all but one complete unit (PCjr, side car expansion thingy, wireless keyboard and the wire for it, power supply, monitor). I tossed all the PwrS's back then too, but I *think* I have seen one or two still floating around (if you don't mind that it will have a number written on it in white paint). Unfortuantly, the room they would most likely be burried in, the lights are broken right now, so until I get around to changing the ballast, I can't see very well (I just took a quick look with a flashlight, but when I say they would be burried in there, I really mean burried, it is about waist deep in one giant pile of old stuff). If I still have one, I would be willing to give it to you/trade it to you. (you can't have my last one, but worst case, I can tell you what the pinouts are, and the voltages on them, so you can always try to build one yourself... although they do have an odd right angle connector IIRC and that might prove hard to find/replicate) -chris <http://www.mythtech.net>

23 years, 2 months

Punch cards, punch & mag tapes (Toronto)

by mhstein＠usa.net

Anybody interested in 1 or 2 boxes of 80 col cards and a manual punch to punch them with (Made by/for Wright Line, sort of like a big Dymo writer: dial your character and punch the holes)? Also have 4 or 5 reels of mag tape, new and used. mike

23 years, 2 months

Unknown IC

by ajp166＠bellatlantic.net

The '582 is carry lookahead generator if memory serves. Used to speed up addition of long words. Allison -----Original Message----- From: Dave McGuire <mcguire(a)neurotica.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Sunday, October 14, 2001 7:05 PM Subject: Re: Unknown IC >On October 14, Jim Donoghue wrote: >> Anybody know what a 74F582 is? 24-pin DIP, it's on a processor board along >> with several 74LS181's and various others. Thanks. > > Ahh, the 74LS181s are ALUs, as is the 'F582. Interesting that they >used both. I'm curious...what kind of processor is this? > > -Dave > >-- >Dave McGuire >Laurel, MD

23 years, 2 months

ASR 33 Emulation - help!

by mythtech＠Mac.com

>Nobody on this list likes KERMIT anymore ? well... ever since Jim Henson died and his voice changed... he hasn't been as cool. I guess it really isn't easy being green. ;-) -chris <http://www.mythtech.net>

23 years, 2 months

Rescue Needed: SGI PowerSeries III 4d/48VGX FREE!!

by mgoodman＠hms.harvard.edu

Please help find a home for this system: This is one unique system giveaway...last of the dinosaurs wants a good home; and we want the space it occupies. The SGI PowerSeries III 4d/48VGX is a beast of an IRIX system (or was in it's day). This system was a graphics workhorse that ruled the world of high-end Structural Biology Molecular Modeling; chewing up other systems in its wake. Today it is a fossil that could have high appeal to a computer archeologist. This system is about the size of a LARGE refrigerator, runs on 220V power (and knows how to USE IT!!). The system is currently not in operation; but for those that know how, or want a unique project, it can be a serviceable working unit. Expensive to purchase originally; reputedly around $250K, This is a classic system that is destined as a museum piece...it would be a real shame if this ends up in the being discarded. Here's a couple of links on this unit and its family, for those with interest: http://www.reputable.com/~skywriter/pstech/index.html http://www.geocities.com/SiliconValley/Pines/2258/4dfaq.html You must be able to remove the system via your own transportation. The system is located on the Harvard Medical School campus in Boston, Massachusetts. Please: Serious Inquires only...remember you must truck this system out on your own; and removal in a timely fashion would be appreciated. Michael -- - Michael Goodman Unix Systems Administrator Harvard Medical School West Quad Computing Group Seely G. Mudd Building/Room 204D 250 Longwood Avenue Boston, MA 02115-5731 Tel: 617-432-4588 Fax: 617-738-0516 Email: mgoodman(a)hms.harvard.edu Web: http://sbweb.med.harvard.edu/mjg/

23 years, 2 months

ASR 33 Emulation - help!

by dhquebbeman＠theestopinalgroup.com

> Doug, > > From Black Box's website; > > * 10/3/01?EUR"Black Box Corporation Announces Merger with > Di.el. Distribuzioni Elettroniche S.r.l. > * 9/25/01?EUR"Black Box Corporation Announces Merger with GCS > Network Services Ltd. > * 8/27/2001?EUR"Black Box Corporation Announces Merger With > Optech Fibres Ltd. > > So what are we supposed to cal them now? Bigger Black Box? ;) -dq

23 years, 2 months

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test-drb October 2001