test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jrkeys＠concentric.net

Can't locate the TV setup control panel on the Mac TV I got from eBay? It has OS 7.5.3 loaded on it. I tried Apple's site, google, and others but no luck as to how I can replace this missing control panel. Any tips? Thanks

23 years, 5 months

FS: Old Computer Magazines

by classiccmp＠vintage-computer.com

A gentleman contacted me the other day about some old computer magazines that he needs to get rid of. I already had copies of the issues in question so, with his permission, I am forwarding the information to the list. Please contact Jeff at JeffVolp(a)att.net if you are interested in any or all of the following: Creative Computing: 77 Nov/Dec (Vol 3: 6) 78 Jan/Feb, July/Aug - Nov/Dec (Vol 4: 1, 4-6) 79 Jan - Aug, Nov, Dec (Vol 5: 1-8, 11, 12) 80 Jan - Apr, June - Dec (Vol 6: 1-4, 6-12) 81 Feb, Mar, Aug, Oct (Vol 7: 2, 3, 8, 10) Dr. Dobb's Journal - March 1980 through February 1981 (issues 43-52) He wanted $15 + shipping for the Dr. Dobb's but didn't mention a price for the Creative Computing. Please contact Jeff with any questions or offers. Thank you, Erik S. Klein www.vintage-computer.com

23 years, 5 months

Motorola Kit model MC14500B demo unit available

by wh.sudbrink＠verizon.net

Told this guy I'd help him out, if you contact him, tell him I (Bill Sudbrink) sent you. ==================================================== I have the following kits suitable for teaching the fundamentals of computer hardware technology: 2 sets of Motorola Kit model MC14500B demo unit assembled with handbook and operating systems information. These kits have never been used and are in Original shipping boxes. Prices are: Motorola $65.00 plus shipping The kits are in West Springfield, MA 01089 Reply to p.muto(a)att.net Peter Muto

23 years, 5 months

PDP-11 stuff available in Richmond, California

by quapla＠xs4all.nl

All, I got this message via my web site. If there any interested parties, please contact Rowen via 'riomac(a)yahoo.com'. BTW, does anybody know what the 'DPM' could be? Ed >Hello > >Are you still collecting? I might have a few items you might be interested >in. PDP 11/84's, qbus stuff, something called a DPM (DEC), tons of >manuals... > >Rowen McCormick --

23 years, 5 months

cctech digest, Vol 1 #191 - 35 msgs

by xds_sigma7＠hotmail.com

Mark, There should be a model number on the back (most likely) or someplace at any rate.. Should read VIPxxxx, where xxxx is a 4-digit number.. I believe the model number will start with a "7", though I can't guarantee that.. I'd love to buy it from you, I have a Honeywell minicomputer which uses Honeywell terminals, and I lack terminals. If you reply to me directly, maybe we could make a deal? Will J _________________________________________________________________ Internet access plans that fit your lifestyle -- join MSN. http://resourcecenter.msn.com/access/plans/default.asp

23 years, 5 months

Mac IIci memory

by cb＠mythtech.net

>Standard non-parity (parity work OK too) 30pin SIMMS, 80ns or better, max >looks to be 16MB SIMMS (times 8 = 128MB ram - trust me, you won't be >wanting to wait the 10 minutes or so the machine will take to initialize >that on every hard reboot - 40MB was enough pain for me): The only thing to watch for, IIRC, is there are a few, odd, parity only versions of the IIci. I believe the logic board is labeled as such, and they are pretty rare, so odds are you won't have one. But it might be worth a quick look at the board to be certain (IIRC, it is labeled "Parity" near the SIMM slots). As long as you don't have that odd version, then parity or non parity will work fine in the IIci (but I recommend you keep them all the same type) -chris <http://www.mythtech.net>

23 years, 5 months

MAC LC, LCII & IICX

by cb＠mythtech.net

>Question: when you find a good software package on a +AD4-7 >year old Mac, is it easy, hard, or completely impossible >to add said software to another Mac that you have. >This assumes a working network for starters. Most software on the mac is VERY easy to copy from one mac to another. In many cases, all you need to do is copy the folder the application is in to the other mac, and you are done. Everything is contained in that one folder. That is normal Mac behavior. Some applications have support extensions however. In those cases, you will need to also locate the appropriate files from the System folder. (usually in the Extension folder, but depending on the purpose, may be in the Control Panels folder, or elsewhere in the System folder... ie: Claris applications make their own folder called "Claris" and stick most of their support files in there). If in doubt on what may need to be moved, feel free to ask, I might be able to tell you if there are any additional files and where to locate them. -chris <http://www.mythtech.net>

23 years, 5 months

MAC LC, LCII & IICX

by SUPRDAVE＠aol.com

In a message dated 11/1/2002 12:16:21 PM Eastern Standard Time, gehrich(a)tampabay.rr.com writes: << I have the opportunity to acquire the following computers (just the computer itself). The gentleman wants $20 a piece. Is that a good price. How much should they be going for? Macintosh LC Macintosh LC II (2) Macintosh II CX >> $20 would be ok for ALL of them. The LCII is crippled with crappy hardware design. IF they are populated with max RAM and bigger hard drives they might be worth alittle more. Chances are they have maybe 8meg and 40/80meg hard drives. The IICX has no built in video either.

23 years, 5 months

Apologies

by micheladam＠theedge.ca

----- Original Message ----- From: bob(a)jfcl.com (Bob Armstrong) [...] Apologies to the list. My reply was meant to be off-list. Michel

23 years, 5 months

Bringing up a 10 years dormant VAX 11/750

by xds_sigma7＠hotmail.com

I didn't mean to imply that I thought it was.. I was laughing about what Fred said the tombstone would say for someone killed by their 11/70.. My apologies if you thought I was laughing about that... I agree with you fully about the danger of hanta virus... Any time you are around rodent excrement, especially in large quantities, you can't be too careful... That's why I have thrown out a few items I've gotten over the years; I figured the potential health hazard to myself was not worth it... A good example would be the Sinclair ZX-81 I got which was filled with cockroaches! YUCK! What sort of protection do you think would be adequate for John when he cleans the VAX? I'd almost want to recommend some kind of serious respirator-type mask, like the ones used when you do things like paint a car, or work with fiberglass, etc. But I definetly agree you should, bare minimum, wear a face mask, and gloves as well... Will J _________________________________________________________________ Unlimited Internet access -- and 2 months free! Try MSN. http://resourcecenter.msn.com/access/plans/2monthsfree.asp

23 years, 5 months

Bringing up a 10 years dormant VAX 11/750

by xds_sigma7＠hotmail.com

Hahaha... I like that one... I was referring to the rodents + New Mexico = possible hanta virus, though. Of course, if you got electrocuted by your 11/70, IMHO, you probably didn't know how to do whatever you were doing ;p Will J _________________________________________________________________ Surf the Web without missing calls! Get MSN Broadband. http://resourcecenter.msn.com/access/plans/freeactivation.asp

23 years, 5 months

Build your own PDP-8!

by micheladam＠theedge.ca

Then add my name to the list! Michel Adam 311 Rockridge Apts. 4905 - 54th Ave. Yellowknife, N.W.T. Canada X1A 1H6 Thanks Michel micheladam(a)theedge.ca ----- Original Message ----- From: bob(a)jfcl.com (Bob Armstrong) Date: Friday, November 1, 2002 8:55 am Subject: Re: Build your own PDP-8! > > In about twenty four hours eleven people have signed up for 13 > PC boards. > This is far more than I ever expected, and I'm glad to see so many > peopleinterested in PDP-8s and the SBC6120. I plan to keep taking > sign ups until > Monday, or we get to 20, which ever is first. > > BTW, the number of people signed up for our cooperative so far > is enough > to guarantee a PCB price somewhere in the low $30 range. > > Thanks again, > Bob Armstrong > > > If you're one of those people who wants a PDP-8 but can't find > one, don't > >despair - you can always build your own! The SBC6120 is a > complete PDP-8 > >built around the venerable Harris HM6120 CPU and modern > programmable logic > >devices. All parts used except the 6120 are contemporary, easily > available>devices. > > > > The entire system fits on a PC board 6.2" by 4.2" and has > approximately the > >same footprint as a 3.5" hard disk. The SBC6120 has an IDE disk > interface,>an optional 2Mb non-volatile RAM disk (that's as big as > an RK05!), and a true > >KL8/E compatible console terminal interface. OS/8 device > handlers are > >available for the IDE and RAM disks, and the system will run standard > >OS/8 V3D. There's even an expansion bus so you can design and > build your > >own daughter cards to plug into it. > > > > To find out more, visit the SBC6120 web page at > > > > http://www.SpareTimeGizmos.com/Hardware/SBC6120-2.htm > > > > I've recently had two requests to buy SBC6120 PC boards. These > are four > >layer boards with plated holes and are quite expensive in > quantity one or two, > >but the price falls per piece falls dramatically for quantities > as small as > >four or six. I'd like to find a few other people who would be > interested in > >building their own SBC6120 and going in together on a PCB order. > The price > >for a SBC6120 PC board would be something like: > > > > Two boards ==> $100 per board > > Four " ==> $60 per board > > Six " ==> $45 per board > > Ten " ==> $36 per board > > > > I also have about four spare 6120 chips, which I'm willing to > sell at my > >cost of $50 each. Believe it or not, it is still possible to buy > new old > >stock 6120s, at $50 each, with a minimum order of ten (!!), but > if enough > >people want SBC6120s we could always go this route. > > > > If you're interested, please write to me at bob(a)jfcl.com. > > > >Bob Armstrong >

23 years, 5 months

In search of qbus WCS...

by xds_sigma7＠hotmail.com

While I cannot say that I own the WCS board, I do have the printset for it, though it needs to be blown up (enlarged, *not* integrated with explosives), so should you ever need it, I could provide a copy. Will J _________________________________________________________________ Broadband? Dial-up? Get reliable MSN Internet Access. http://resourcecenter.msn.com/access/plans/default.asp

23 years, 5 months

Bringing up a 10 years dormant VAX 11/750

by xds_sigma7＠hotmail.com

Agreed, I don't think it would be good if we were to have a list member killed by a classic computer... Directly or indirectly... Will J _________________________________________________________________ Surf the Web without missing calls! Get MSN Broadband. http://resourcecenter.msn.com/access/plans/freeactivation.asp

23 years, 5 months

Build your own PDP-8!

by bob＠jfcl.com

In about twenty four hours eleven people have signed up for 13 PC boards. This is far more than I ever expected, and I'm glad to see so many people interested in PDP-8s and the SBC6120. I plan to keep taking sign ups until Monday, or we get to 20, which ever is first. BTW, the number of people signed up for our cooperative so far is enough to guarantee a PCB price somewhere in the low $30 range. Thanks again, Bob Armstrong > If you're one of those people who wants a PDP-8 but can't find one, don't >despair - you can always build your own! The SBC6120 is a complete PDP-8 >built around the venerable Harris HM6120 CPU and modern programmable logic >devices. All parts used except the 6120 are contemporary, easily available >devices. > > The entire system fits on a PC board 6.2" by 4.2" and has approximately the >same footprint as a 3.5" hard disk. The SBC6120 has an IDE disk interface, >an optional 2Mb non-volatile RAM disk (that's as big as an RK05!), and a true >KL8/E compatible console terminal interface. OS/8 device handlers are >available for the IDE and RAM disks, and the system will run standard >OS/8 V3D. There's even an expansion bus so you can design and build your >own daughter cards to plug into it. > > To find out more, visit the SBC6120 web page at > > http://www.SpareTimeGizmos.com/Hardware/SBC6120-2.htm > > I've recently had two requests to buy SBC6120 PC boards. These are four >layer boards with plated holes and are quite expensive in quantity one or two, >but the price falls per piece falls dramatically for quantities as small as >four or six. I'd like to find a few other people who would be interested in >building their own SBC6120 and going in together on a PCB order. The price >for a SBC6120 PC board would be something like: > > Two boards ==> $100 per board > Four " ==> $60 per board > Six " ==> $45 per board > Ten " ==> $36 per board > > I also have about four spare 6120 chips, which I'm willing to sell at my >cost of $50 each. Believe it or not, it is still possible to buy new old >stock 6120s, at $50 each, with a minimum order of ten (!!), but if enough >people want SBC6120s we could always go this route. > > If you're interested, please write to me at bob(a)jfcl.com. > >Bob Armstrong

23 years, 5 months

RE: Best programming suite recommendations.

by DAW＠yalepress3.unipress.yale.edu

+AD4- From: John Allain +AFs-mailto:allain+AEA-panix.com+AF0- +AD4- +AD4- +AD4- Hi, +AD4- I just saw another post from someone mentioning a layoff +AD4- (my Best Wishes to you too) and I thought it worth while +AD4- speaking up on this. That was probably me. Thanks for the thoughts. I did find some work, not a steady 40, but it's something... +AD4- Let's face it, unless you're in +AD4- with the GOV in some special way, it is probably Not good +AD4- to specialize in obsoletecomp for all of your computing. +AD4- So I'm looking for what you out there have voted for as +AD4- your programming environments (for those of you who +AD4- program, probably over 50+ACU-). +AD4- This isn't what you're exactly looking for, but that's part of the reason I downloaded Solaris 9 for my Ultra1, and Solaris 8 for my x86 boxes. I figure I'll work my way towards being a Solaris SysAdmin, or at least be able to support it, in addition to the Win/Macintosh support experience on my resume... -- --- David A. Woyciesjes --- C +ACY- IS Support Specialist --- Yale University Press --- (203) 432-0953 --- ICQ +ACM- - 905818

23 years, 5 months

What is it ?

by Innfogra＠aol.com

Sounds like the original Compaq portable, one of the computers that "made" Compaq. The Compaq Portable II usually said that, it was a bit smaller and had 1.2 floppies. All the others are smaller. Does it have a hardcard installed in one of those slots? Does it boot? Paxton Astoria, Oregon

23 years, 5 months

Was this Altair one of US ?

by jrkeys＠concentric.net

It went for $2105.88 http://cgi.ebay.com/ws/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=206440363 3

23 years, 5 months

Repairing devices

by dwightk.elvey＠amd.com

>From: "Patrick Finnegan" <pat(a)purdueriots.com> > >I know this is a bit OT, becuase it's not really computer related, but the >hardware is at least 23 years old, so that's my excuse for posting to the >list... > >I've got a 35mW HeNe Laser + Power supply that I picked up today for next >to nothing. It seems to be having some problems - the laser (somtimes) >blinks a few times when I first turn it on, and then stops. From the >sound of the power supply it's either a loose connection (which I doubt >after opening it up and taking a good look around) or there's a problem >with the power supply. > >Now, I've never really worked on a HV power supply before, and I'm trying >to be careful when I play with things. First off, does anyone have a >general idea of what sized dummy load ("resisitor") I should try haning >off of the HV output to properly load it? I noticed that the laser tube >has 3x27kohm resistors in series, would a couple watt approx 81kohm >resistor be a good idea? > >Also, does anyone have an idea for a failure mode to look for? I've got >an O'scope, dmm, and various other tools at my disposal, but no >'authentic' HV test/mesurement gear. Hi I know this doesn't make sense at first but it is most likely that the failure is in the HeNe tube and not the power supply. The general failure starts with the lasing pulsing at slower and slower rates until it stops working. The problem is caused by the He leaking out of the tube. I know you'd say, how can that happen when inside the tube is a partial vacuum. Well, it has to do with partial pressures. The partial pressure of He is lower out side of the tube than inside, so it leaks out. It is also related to the slipperiness of He. It leaks through everything, including glass. Try another tube that is known to be good. Dwight > >I'm just looking for general guidelines. > >Thanks! > >Pat >-- >"The Microsoft/IBM FORTRAN was adequate for teaching FORTRAN 77. But the >performance was AMAZING! It could actually take longer to run a benchmark >like sieve of Erastothanes with compiled FORTRAN than with interpreted >BASIC." > -- Fred Cisin (XenoSoft) >http://dilbert.com/comics/dilbert/archive/images/dilbert2040637020924.gif > > >

23 years, 5 months

Hazeltine 1421 - anyone heard of it?

by ian_primus＠yahoo.com

I just got a Hazeltine 1421 terminal. When I first got it, It showed nothing but garbage on the screen, then I took it apart and cleaned everything, reseated chips and cleaned their pins. I fired it up again and it worked perfectly, save for the keyboard jamming on some keys. I cleaned the keyboard completely, and was able to fix most of the problems, except the keyboard is missing the "-" keytop, the "T" key jams occasionally, "E" is erratic and "J" is really gouged and bent, and falls off easy (looks like someone dropped something heavy on the keyboard). All in all, save for the keyboard, it's in very good shape. The question that I have is wether anyone has heard of or seen a Hazeltiine 1421. I haven't been able to find anything on the internet, but I did find the Hazeltine 1420 manual on vt100.net. Linux doesn't seem to have an entry for the 1421, but it does have one for the 1420. Inside the access panel is a switch labelled "1420" and "Other". I have tried it on "1420", and told Linux that it is a 1420. It is barely useable. No programs will display properly, things like pico and pine get really screwed up, not clearing the text from the screen when they write the next screen, etc, even screen seems to do funny things to it, sometimes after exiting programs or typing "clear" the prompt appears in the middle of the screen. I am guessing this is either due to the termcap or terminfo(what's the difference, I always forget?) entry, the settings on my terminal, or maybe the programs I am trying to use aren't meant to deal with a Hazeltine terminal. I would appreciate any information anyone has on this terminal. Thanks! Ian Primus ian_primus(a)yahoo.com

23 years, 5 months

TRS80 Model 3 i/o connectors

by acme_ent＠bellsouth.net

> From: Tony Duell <ard(a)p850ug1.demon.co.uk> > Most of the I/O connectors are on the bottom... Okay, *bottom of the unit towards the rear* :>) > So far, so good. I assume you've identified the mains input as well. Yeah, that would be pretty hard to miss! > On the bottom are 4 connectors. The 2 neares the back of the machine are > on the CPU board and consist of the parallel printer port (34 pin, > towards the floppy drive side of the machine) and the I/O expansion bus > (50 pin). > > In front of the parallel port is another 34 pin edge connector, which is > part of the floppy controller card. It's for external floppy drives (You > can connect 2 more drives here, I think you set them as DS0 and DS1, and > you need to terminate the last drive on the cable). > > In front of the I/O bus is the DB25 RS232 port. > > > parallel port as a 34-pin card-edge connector (which I suppose needs a > > Tandy-specific cable to attach to a printer), but the problem is that there > > Yes, but it's an easy cable to make up. It's just a 34 pin edge connector > on one end of a piece of ribbon cable and a 36 pin Blue Ribbon > ('Centronics') plug on the other. Leave pins 18 and 36 on the BLue Ribbon > connector unconnected, match up the pin 1s of the 2 connectors. Then just > crimp the connectors onto the cable -- there are no twists or swaps to > worry about. Thanks for the information. I'll be poking around this critter more this weekend. Any gotchas I should know about? Later -- Glen 0/0

23 years, 5 months

O-scopes: probes, tutorials

by classiccmp＠crash.com

A couple weekends ago I finally made it to the Flea at MIT - only been meaning to go since 1989... Anyway I was looking for a vendor and wound up watching an exchange between a different vendor and this guy in a corduroy jacket. The short of it was, this vendor was desperate to not have to load all the Tek scopes he had back into the truck. Corduroy boy was balking, and the vendor only got more flustered when he was asked if the scope could be hooked up to a stereo to do something cool ;^) So I watched this play out. I'd been thinking I should pick up a scope, as I hope to start tinkering with hardware again sometime soon. But I was thinking about some simple dual trace 20-50 MHz unit... What I got for $100 was a Tek 7834 Storage Scope on a Model 3 cart. With the following 4 plugins: 7A22 differential Amplifier, 7A26 Dual Trace Amp, 7B85 Delaying Time Base, and 7B53N Dual Time Base. And upon getting it home it did, indeed seem to work. Of course I have no probes or manuals, but I got traces and labels and whatnot on the screen. Calibration? Who knows... Anyway, I was wondering what my options are for getting some probes for this beast. Things show up on eBay, and I'll keep an eye out there. There's a local shop that has Velleman probes tho I don't know for how much. Where do you go for probes? Also, anybody have a preferred instructional source, "Using O'scopes For Fun and Mayhem" perhaps? Thanks, --Steve.

23 years, 5 months

[poss OT]: WTD: (UK) NTSC-to-PAL module or NTSC-capable monitor

by philpem＠dsl.pipex.com

Hi, I've just finished building a COSMAC Elf and I've hit a major stumbling block. The CDP1861 video chip outputs monochrome NTSC video. Unfortunately all the monitors I've got are PAL, VGA or SuperVGA. Soooo... Has anyone got an NTSC-to-PAL converter for sale (or can suggest a possible source)? Or maybe even a 5" to 9" NTSC-capable monochrome or colour monitor? If the latter, a vertical hold control would be useful, but not essential. I can get composite video (combined video+sync) or separate Csync/video (luminance) at 5V/0V CMOS level out of the 1861, whatever is needed. Thanks. -- Phil. philpem(a)dsl.pipex.com http://www.philpem.dsl.pipex.com/

23 years, 5 months

halloween thoughts

by fmc＠reanimators.org

Sark <ian_primus(a)yahoo.com> wrote: > Being that it is halloween, I got some candy to pass out to trick or > treaters. I also thought that it might be an opportunity to clean out > my junk heap... Didn't y'all catch FoxTrot in this morning's funnies? <http://www.ucomics.com/foxtrot/2002/10/31/>, only good for two weeks, and it probably works better with one of those gooey browsers. Wish I'd seen it before I got dressed, I'd have worn my ActiveX t-shirt to the office. Hey, it's the scariest piece of clothing I own. -Frank McConnell

23 years, 5 months

TRS80 Model 3 i/o connectors

by acme_ent＠bellsouth.net

> From: Fred Cisin (XenoSoft) <cisin(a)xenosoft.com> > When you open it, be careful with the back end of the picture tube. I had it open when I was working on the drives, and actually managed to get it reassembled without inflicting any damage -- to the system or myself! ;>) Glen 0/0

23 years, 5 months

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