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WANTED: IBM PS/2 Model 65 SX or Model 80 386

by jwillis＠arielusa.com

Wanted: IBM PS/2 Model 65 SX or IBM PS/2 Model 80 386 these are the full-tower PS/2 systems

23 years, 2 months

Dying VaxStation 4000 VLC - help? - fixed!

by mtapley＠swri.edu

All, The result: Replacing the electrolytic capacitor on the lower leg of the voltage divider feeding the reset comparator did the trick. The system is now up and running normally (but I've forgotten the password! Hope I wrote it down, else I'll have to re-build the system...). Many thanks to Tony D. (who guessed right the first time), Toth, Peter, Antonio, and anyone else I've forgotten. Sorry it took so long to report - I just this morning got my friend at work to put the new capacitor in place. I still have the presumed leaky capacitor he took out, but have not tested it. Details of the problem are (presumably) in the archives; in brief, the primary symptom is that the system won't come out of reset (the code LED's on the back won't start flashing) on power-up, or falls back into reset peridically while running. Anyone with similar problems, I'll be happy to relate my full story and send pictures if desired. I *love* being on this list! Thanks again to all! - Mark

23 years, 2 months

OT: OT: OT: Re: Gateway 2000 Handbook 486 question

by Robert_Feldman＠jdedwards.com

That was Win 3.0, which was the last that could run on an 8088/8086/80186. It had Real (Win /R), Standard (Win /2 or Win /S), and 386 Enhanced (Win /3). Win 3.1 is restricted to the two Protected modes (Standard or 386 Enhanced). -----Original Message----- From: Doc Shipley [mailto:doc@mdrconsult.com] Sent: Tuesday, February 18, 2003 1:10 PM To: cctalk(a)classiccmp.org Subject: Re: OT: OT: OT: Re: Gateway 2000 Handbook 486 question On Tue, 18 Feb 2003 vance(a)neurotica.com wrote: > On Mon, 17 Feb 2003, Chad Fernandez wrote: > > > I did try Win 3.1 on my old 286-12, with about 1-1.5 megs of memory. > > It was so slow, it took it a few minutes to finish crashing :-) > > I don't know what you were doing wrong. I did quite a bit of useful work > on Windows 3.11 running on a 286-8 with 1MB RAM. Ran just fine. ISTR that Win3.11 had a switch to run either in "Real" or "Standard" mode. I may have the terms wrong, but one was for low power machines. Doc

23 years, 2 months

Help with my PDP 11/73

by chu＠verizon.net

Hi, Thanks. Big success and then a new problem. I took out the top three levels of my cards and reseated them. There's a lot of corrosion on the contacts so it inserts only with difficulty. Anyway it booted up ONCE and I saw lines indicating that RSX11-Mplus was starting up. It went through an initialization script and then I/O to the console terminal died. I have not been able to get any more output from the console. So my next problem is to figure out what happened. Progress is being made. One big good thing, at least my disk has to be working. Dave Chu Date: Mon, 17 Feb 2003 21:55:25 -0600 From: Jeffrey Sharp <jss(a)subatomix.com> To: cctalk(a)classiccmp.org Subject: Re: Help with my PDP 11/73 Reply-To: cctalk(a)classiccmp.org On Monday, February 17, 2003, Charles H. Dickman wrote: > Ethan Dicks wrote: > 0 A-B > V >> 1 A-B >> v >> 2 A-B >> v >> 3 A-B -> C-D >> v >> 4 A-B <- C-D >> v >> 5 A-B -> C-D >> v >> 6 A-B <- C-D For a decent Qbus primer, see here: http://telnet.hu/hamster/dr/qbus.html It seems to be loading quite slowly ATM. Good luck. -- Jeffrey Sharp

23 years, 2 months

RL02 docs in PDF (re:11/44)

by jwest＠kwcorp.com

I noticed the docs on maincoon for the RL02 were all in tiff format. I got them all converted to pdf in case someone needs them in that format and doesn't have the tiff to pdf conversion utilities. If more than a few people ask I'll put them up on classiccmp.org. Jay West

23 years, 2 months

RARE Vintage DEC/Heathkit LSI-11/H-11A w/S/W back on eBay

by ssj152＠charter.net

It's BACKKKK - the H11 that the guy was asking $6-7K for is back, this time he will accept only $2,992.92 for it. The URL is:http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3402466712&category=4… 3 Anyone need a H11 with LOTS of software?? I wish I had it... Oh well. Stuart Johnson

23 years, 2 months

vi for the C64

by spectre＠stockholm.ptloma.edu

I've made good on one of my long-standing threats and created a small implementation of the vi editor for the C64. svicc features an extended subset of nex/nvi commands and is designed to integrate well with Commodore BASIC. It supports many basic motion, editing and positioning commands and includes a number of Commodore-specific features, including a built-in disk wedge. Almost all 38K of the BASIC text space is available for documents. The web page also details how to use svicc to build self-displaying documents. Basic documentation is built-in to svicc, and the web page has a complete reference intended for current vi addicts. svicc is freeware. Have fun. Comments appreciated, including its performance with accelerator cartridges and the SuperCPU. http://www.floodgap.com/retrotech/cbm/svicc/ -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- I do not know myself, and God forbid that I should. -- J. W. von Goethe ----

23 years, 2 months

Wanted: L5-30 Receptacle or Adapter in US

by jss＠subatomix.com

I'm looking for someone in the US with a L5-30 receptacle or an adapter so that I can plug my L5-30-plugged DEC 861PC Power Controller into a standard wall outlet. Thanks! -- Jeffrey Sharp

23 years, 2 months

looking to get a VAX 11/750

by pzachary＠sasquatch.com

It seemed to me before I called up someone out on the east coast and bought a VAX-11/750 for $150=/- then spent $250 or so shipping it that I should try the list. I want a VAX 11/750 for old times sake and as a peripheral for my pdp-11s... anyone have one for sale/trade/...? Thought I'd rather a local had the money to buy inflated pdp-8 spares or something than giving it all to a shipping company. I'm located in santa Cruz CA and am willing to pick up within a couple hundred miles. I would really like to get out of this for less than $400 (really $250 seems like a fair price(that's what they sold the one I ran out from under me when the funding ran out and I was on vacation for (rant ends)) but I'll take what I can get) further, I have much of a card set and a power supply or two, so if I get a incomplete one that's O.K. thanks, Pavl_ sorry about the joining in of the rant/flame thing RE:politics, I can usually restrain myself but sometimes when it goes on... and to respond to the digest-delayed list makes it worse I know(I've at least changed the last bit)

23 years, 2 months

Harris 6100 CPUs

by classiccmp＠vintage-computer.com

I've got a line on some "early run" Harris 6100 CPUs (with data sheets) in "unmarked ceramic packages" for $10 per. I'm interested in one or two for some odd reason (I guess I want one or two of everything, when you come right down to it. . . :) but the seller has about 10-12 for sale. Is anyone else interested in these? Are they worth the $10? I'll be happy to be the clearinghouse on these for anyone who is interested (I'll buy them and forward them along for cost.) Erik S. Klein www.vintage-computer.com

23 years, 2 months

OT: Re: Going OT Re: (no subject)

by pzachary＠sasquatch.com

> Since when does pointing out the obvious equate to "Bush-bashing"? > >Where is your proof? Circumstantial evidence is not proof. >- Is it just me, or does this sound like the question the whole world is asking the current administration? pavl

23 years, 2 months

Going OT Re: (no subject)

by pzachary＠sasquatch.com

why not, that's what we use it for. Pavl_ >Well, it would be a good idea to get the oil out of the hands >of the Arabs since they are using the profits to finance >terrorism. >-- >Eric Dittman >dittman(a)dittman.net

23 years, 2 months

Going OT Re: (no subject)

by Fred.van.Kempen＠microwalt.nl

... about governments, standards of living... CUT THE CRAP. SHUT UP. SHUSH. Now, get back to your old puters and do something useful again. Thanks, Fred

23 years, 2 months

Emulated Peripherals

by pzachary＠sasquatch.com

I thought the oil leaks were the anti-rust system :) Pavl_ >ate: Mon, 17 Feb 2003 17:47:15 -0500 >From: Bob Shannon <bshannon(a)tiac.net> >To: cctalk(a)classiccmp.org >Subject: Re: Emulated Peripherals >Reply-To: cctalk(a)classiccmp.org > >Doh! > >All I know is the car has built-in rust protection, it won't start if it >rains or snows! > >Chad Fernandez wrote: > > Bob Shannon wrote: > >> I think thats a typo, probably was supposed to read MBC, a large >> west-coast HP support house. >> >> And yes, there are lots of MBG's, my neighbor has one in his garage! > > > That's not an MBG, it's an MGB :-) > > Chad Fernandez > Michigan, USA

23 years, 2 months

Wanted L5-30 Outlet Receptical

by truthanl＠oclc.org

Jeffery Please consider your mechanical connections and the duty cycle of this Adaptation. I have an air conditioned cruiser I keep on Lake Erie. It has two L5-30 125 V marine power feeds that come to a power distribution panel. Current ( and voltage) is constantly monitored on analog meters (two per feed, -one Volts - one Amps.) The one feed that runs only the Air Conditioner, averages 9 Amps and the other house circuit, which has a battery charger and refrigerater on it, average 5 AMPs so I thought One 30A Cable could supply the boat. ( got tired of the mess of two cables draped over the bow and decks - spider habitat! ) After a couple seasons, I made a splitter out of 10 Ga stranded copper wire using heavy set screw terminal lugs for the split connectors. I ran one 30 Amp cable 30 feet to the splitter. and then let the 20 inch splitter, split the feeds. I used all top quality 'Hubbell" marine connectors for the terminal receptical(s) & outlet(S) on the single feed cable and the splitter. Just this last season I left Air conditioner running for about two of the hottest weeks in September ( freakish -Indian summer). When I went to cast off the lines for a Fall trip to the Islands, the terminal connections on each end of the single feed cable failed due to heat. Un-twististing the twist lock at the remote receptical end was tough, then the Ground and Hot blades pulled out of the plug end at the dock outlet. I had to switch off the dock breaker and extract the blade components using needle nose pliers. My Point is the 30 Amp feed cable (the oldest component) perhaps had some vibration, or corrosion, compromised mechanical connections. Which over time (2 weeks) created enough heat to compromise ( melt) the quality parts. All my parts were rated at 30 amps, and I knew my usage was less than 19 Amps! ( If I was not in a hurry to take the splitter with me, the parts may have cooled and re-set (solidified) rather than than pulling apart. But it was truly an education in real world failure modes of decently rated parts. If you are adapting down to a 15- 20 amp plug, you will still need to be EVER mindful of the physical condition, and operating temperatures of any mechanical connections you make. Sincerely Larry Truthan Digest Subscriber

23 years, 2 months

WTD: Missing R-E issues wanted

by rcini＠optonline.net

Hello, all: I just finished paging through a huge stack of old Radio-Electronics issues and found that I'm missing a few that contain parts of multi-part articles that I have. Here's the list, with the page number of the article, if I have it, and the author. If anyone has these issues and is willing to scan/copy these article parts, please contact me off-list. Thanks. July 1983: Part 1 Expanding the Timex 1000 /Sinclair Memory (Paul Hunter) Dec 1986: Part 1 R-E Robot (Steve Sarns) Jan 1988, p. 67: Intro REACTS Radio-Electronics Advanced Control System (Ed Roberts) Feb 1988, p. 47: Part 1 REACTS Radio-Electronics Advanced Control System (Ed Roberts) July 1988: Part 6 REACTS Radio-Electronics Advanced Control System (Ed Roberts) July 1988: Part 1 {Technology} The General Purpose Interface Bus (GPIB) (Vaughn Martin) Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

23 years, 2 months

Gridcase 1530

by kandres＠epssecurity.com

Greetings all, I have a Gridcase 1520 286 with plasma display that I bought years ago to work in dark areas with. It has the same problem that was mentioned where the CMOS battery is low/dead, and does not maintain settings. I have mine on a bench currently running an exercise for a graphic driver board fed by serial numbers. I put together a "boot" floppy for it when it first started losing its settings in CMOS. As was previously stated, hitting "F" at boot up will cause the machine to load from floppy. I have done that for a lOOOOng time for lack of time to change the battery. Hitting "H" selected boot from hard drive as I recall, but I have had no problem accessing the hard drive once the floppy boot was accomplished. Of course the correct thing to do is replace the CMOS battery as one writer suggested. If you do not solder, find someone who can. Kev

23 years, 2 months

RS-232 Problem (Configuration ?)

by mranalog＠attbi.com

Mike Davis wrote: > Let me start off by saying "I hate RS-232". RS-232 is not a problem as long as you have a few tools and some patience. > I'm using Port A (on the SIO) and have configured the A3 Jumper to > have You might change the A3 jumper (temporary) by REMOVING jumpers: TD Pin 1 to Pin 15 RD RD Pin 2 to Pin 16 TD and INSTALLING a jumper: RD Pin 15 to Pin 16 TD This will give you a loopback to your terminal that will test your cabling and the correctness of the handshaking with your terminal. If this does not work, I would look at the handshaking first. If that works, and you have a logic probe, you could change the A3 jumpers back to their original jumpers and using the logic probe, test for the pulses being received at pin 3 on the 8251 at B5. --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog =========================================

23 years, 2 months

RS-232 Problem (Configuration ?)

by mranalog＠attbi.com

Mike Davis wrote: > I'm using the following CIN and COUT routines. > 2900 DB03 CIN IN STAT > 2902 E602 ANI IBIT > 2904 CA0029 JZ CIN > 2907 DB02 IN DATA Shouldn't there be a OUT DATA inserted here to echo the character back to the terminal? Wait a minute!! The User Manual says on the A3 jumper "Jumper connection 3 to 14 is always to be made." I don't see that in your list of jumpers. This jumper looks like it disables current loop operation and would effect RxD!! --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog =========================================

23 years, 2 months

Fwd: Grundy Newbrain Schematics?

by jss＠subatomix.com

Reply to the original author, please. His post is edited for proper punctuation, capitalization, spelling, grammar, and semantics. My edits are delimited with square brackets ('[', ']'). ---------- Begin forwarded message ---------- From: Barry Cross <Barry_Cross(a)blueyonder.co.uk> Date: Sunday, February 16, 2003, 11:16:37 AM Subject: newbrain [H]i[.] [I] saw [that someone on this list] had [schematics] for the [G]rundy [N]ewbrain[.] [I]s there any possibility [at all] of a copy of this [available for me]? [I] would be willing to pay any costs [incurred.] [T]hanks. ---------- End forwarded message ---------- -- Jeffrey Sharp

23 years, 2 months

Help with my PDP 11/73

by chu＠verizon.net

OK!!! The null modem that I just bought must have been bad. I got another one from a different vendor and I can talk to my processor. I am able to get into dialog mode, setup mode, and into ODT. I runs the self test loop correctly. However, when I try to boot either DU0 or MU0 the machine gets hung up. My assumption is that the disk may have been erased before sale and the tape cartridge I got is probably blank. Where can I get a copy of XXDP on a TK50 cartridge? Or is there another way I can determine if my two peripherals are working? TIA, DAve Chu

23 years, 2 months

RS-232 Problem (Configuration ?)

by dwightk.elvey＠amd.com

>From: "Mike Davis" <ipscone(a)msdsite.com> > >Let me start off by saying "I hate RS-232". Anyway, now that that's >out of the way, I am having a problem with an RS-232 interface on an >IMSAI SIO board. > >I've been debugging a North Star drive and I was having problems with >it booting (DOS 2) in my IMSAI. I would get the "*" prompt but OS >would not recognize my Soroc terminal input. At first I thought it >might be buggy code on my DOS floppy. > >Anyway, to make a long story short, I have multiple of everything and >have ruled out everything but something to do with my RS-232 >configuration (I guess). I have 2 SIO board and both behave the same >way. > >I'm documenting what I have here, in case someone sees something >wrong that I've overlooked. BTW, this was previously working without >any different configuration or hardware, with the exception of the RS- >232 cable from the Soroc to the IMSAI. This is a brand new cable >that was working just a few weeks ago so I'm having a hard time >believing there is anything wrong with this cable. I have only one, >if you can believe that. I'm going to get another this weekend, if I >have not figured this problem out by then. > >Anyway... > >I'm using Port A (on the SIO) and have configured the A3 Jumper to >have > >TD Pin 1 to Pin 15 RD >RD Pin 2 to Pin 16 TD >RTS Pin 4 to Pin 12 CTS >CTS Pin 5 to Pin 13 RTS >DTR Pin 7 to Pin 9 DSR >DSR Pin 8 to Pin 10 DTR > >By the way, the SIO manual shows DTR-DSR as through straight throuh >in stead of crossover, as shown above. Seems that it should be >crossed over like the others. In any case, I have tried both ways >but it doesn't seem to make any difference. > >I'm using a straight through DB-25 cable from my Soroc to my IMSAI. > >I'm using the following CIN and COUT routines. > >2900 DB03 CIN IN STAT >2902 E602 ANI IBIT >2904 CA0029 JZ CIN >2907 DB02 IN DATA >2909 E67F ANI 7FH >290B C9 RET > >290C DB03 COUT IN STAT >290E E601 ANI OBIT >2910 CA0C29 JZ COUT >2913 78 MOV A,B >2914 D302 OUT DATA >2915 C9 RET > >Areas I'm wondering about. > >1) Is the A3 header correct for the IMSAI as the computer end and the >Soroc as the terminal. 3 pairs crossed over. It does write to the >Terminal properly and when I press the Break Key, I get an echo from >the IMSAI of *?, which seems normal. > >I have tested the input routine, which is part of the DOS input >routines, and was working previously, by modifying it to display the >status to the programmed output on the IMSAI with this code. > >0000 DB03 CIN IN STAT >0002 DBFF OUT FFH (programmed output port) >0004 E602 ANI IBIT >0006 CA0000 JZ CIN >0009 DB02 IN DATA >290B E67F ANI 7FH >290D C30000 JMP CIN Hi There may already be a status in the port, that maybe why you see no change. You need to put a dummy read first. This will cause the drop of alternate characters when working right but this is for debug. Try: CIN IN DATA CIN1 IN STAT OUT FFH ANI IBIT JZ CIN1 IN DATA ANI 7FH JMP CIN If you don't see any change, try some of the other ports, near by for STAT, like 0 , 1 or 2. If that fails, you could be having a problem with the serial lines someplace. You need to check the levels on the serial chip inputs. Dwight > >Seems that this should show whatever is read in the status port for >Port A. But when executed, the status never changes after I tap any >key. > >My system is behaving as if it just can't receive any data from the >terminal. It's driving me buggy as this is a relatively simple >problem. Like I said, I have multiple SIO and they all behave the >same. I even tried another terminal and get the same results. I >have also even tried different ribbon cable from the SIO to the RS- >232 connector. > >Anyone see something bonehead that I overlooked? > >Thanks,

23 years, 2 months

Emulated Peripherals

by dthdunn＠earthlink.net

Our small business caters to the classic computer community, although after exchanging notes with a number of you folks over the last few weeks I can see our disk drive and tape drive emulators are beyond the budget that many of you have. Arraid equipment generally runs >from $3,500 to $14,500. However, besides letting you know that there are still a few emulation companies left in the world, perhaps we can help out some of you. Arraid -- a small American business, made up mainly of engineers -- spends what little extra money we have looking for labs that need our equipment. Our target client has classic (we use the word legacy) computers doing some sort of critical function. These computers have failing peripherals and Arraid can solve that issue without software changes. If you know of labs, people, or businesses in the classic community that could benefit from our emulated peripherals, we pay a 5% finder's fee, each time a lead results in a sale. That money can go to fund your classic computer activities. Thanks for your time... Dave Dunn ARRAID - Legacy Peripheral Solutions dthdunn(a)earthlink.net http://www.arraid.com

23 years, 2 months

RS-232 Problem (Configuration ?)

by doug_jackson＠citadel.com.au

What does a logic probe on the (TTL) Serial Input of the SIO do when you send data? Are the Hardware Handshaking lines at the corrent levels? You could have a faulty Line reciever. If I were doing this, I would be proving the hardware, I don't see why the S/W would be failing? BTW, There is *never* a bonehead problem... Just the kind that we didn't think of.. regards. Doug Jackson CAUTION - The information in this message may be of a privileged or confidential nature intended only for the use of the addressee or someone authorised to receive the addressee's e-mail. If you are not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this e-mail is strictly prohibited. If you have received this email in error please notify postmaster(a)citadel.com.au. Any views expressed in this message are those of the individual sender and may not necessarily reflect the views of Citadel Securix. Feel free to visit the Citadel Securix website! Click below. http://www.citadel.com.au

23 years, 2 months

(no subject)

by dthdunn＠earthlink.net

23 years, 2 months

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