test-drb February 2004

test-drb@ccmp.vtda.org

275 participants
504 discussions

by rdd＠rddavis.org

Trying to save space and not use a real terminal at this time, I decided to wire my VAX 4000-200's console to a serial port on my Sun Ultra-1... however, nothing seems to be working when I try connecting to it with tip (the port, set for 9600 BPS, appears to be ok, since I can get an OK response from a modem). However, there's no response at all on the Sun when I attempt connecting to the VAX using tip or cu. Kermit, even if run as root, is giving me a "Sorry, write access to UUCP lockfile directory denied." message; need to sort that out, but I think that's a separate issue. The LED indicator on the VAX counted dow to three, waiting to boot, so that seems to be ok. Here's how I wired the crossover cable (typical crossover cable wiring, should work, right?): MMJ DB25 DTR 1 ---- 6, 8 DSR, DCD TX+ 2 ---- 3 RD TX- 3 ---- 7 Sig Gnd RX- 4 ---- 7 RX+ 5 ---- 2 TD DSR 6 ---- 20 DTR ----------- MMJ pinout I'm using, 1 2 3 4 5 6 - viewed from -------+ + console +--+ Any ideas as to what I'm doing wrong? Didn't use my breakout box yet, since I need to get new batteries for it. -- Copyright (C) 2003 R. D. Davis The difference between humans & other animals: All Rights Reserved an unnatural belief that we're above Nature & rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such http://www.rddavis.org beliefs and to justify much human cruelty.

20 years, 10 months

Classic Computing in...

by aek＠spies.com

> {SValley} We've only got about half the shops we used to (3 or 4). > Even in the last couple years a couple more closed down. What about these: WierdStuff, Halted, Alltronics, Haltek. All OK? -- Haltek closed several years ago. Alltronics moved to South San Jose, haven't been there but it is supposed to be MUCH smaller. Rumor has it the Foothill flea market is gone (moving to Lockheed?)

20 years, 10 months

Classic Computing in LA

by dundas＠caltech.edu

Well I work at Caltech (Pasadena) and live in a city immediately adjacent and I'm not aware of any good "classic computing" spots. Wish I did. My favorite electronics spots are Dow (now Mavac) and C&H, both on Colorado Blvd. Tim Shoppa turned me on to Empire Electronics in Old Town Pasadena. That's about it. Good luck, John > I'm going to Los Angeles, CA for a few days next week on business. Are there > any good spots to check out for classic computing / electronics gear? I'll > probably be in the Pasadena area. Last time I went I was in Ceritos, and all > the cool electronics surplus places I've heard of were closed. I also have > the luxury of several equipment boxes that will be shipped along with me and > returned on my way back :) > > >

20 years, 10 months

Smoke on the Horizon... oh s**t!

by RMaxwell＠atlantissi.com

5-6 years ago someone decided I could provide a good home for (most of) a retired NorthStar Horizon... It came without drives, software and the HSIO-4 serial port card for which I did receive a manual. I didn't have a pressing need to have it working, so I've taken my time assembling the parts necessary to revive the beast - I finally had enough supporting materials to plug it in last weekend. The first thing I saw was a bright flash and "pop!", which led to a quick unplugging. I couldn't locate anything that appeared to have blown, so I _hoped_ that it was a stray piece of conductive junk that got blown away by the initial power. I then became methodical, and disconnected the power supply from the motherboard, and used an external supply to try charging each of the great honking electrolytic capacitors - they were all OK: internal leakage is really good, considering their age and period of inactivity. With the PSU running unloaded, the caps charged to 20 volts on the 16V rails (positive and negative), and about 11V on the 8V line - perfectly reasonable for an unloaded supply. Next I reconnected the boards and repowered the beast - the unregulated supplies were all holding up without complaint, so I tried booting a disk. The floppy drive was spinning, and it stopped when I hit Reset, but there was no drive select or seeking. Then something (it used to be a tantalum cap) caught fire. Unplug again. The former capacitor was the input filter on the 7812 12-volt regulator on the HRAM6 64K DRAM card. There was also a dead short on the 7812 output, caused by its output filter tantalum. There's also a wrecked tantalum on the input side of the 78L12 regulator on the CPU card: it didn't burn, it just blew half its coating off (it may have been the original flash...?). Now, the questions: what the hell happened? Failures of tantalums (I've witnessed) are usually due to reversed polarity: not only are these particular parts long-term residents of the boards, but the unregulated +12V supply is the highest DC voltage in the machine - how did the - terminal (DC Ground) become more positive than the +? How did that happen on two S-100 cards when the main supply, motherboard and floppy drive show no problem? Has any other Horizon (or S-100) keeper experienced anything like this? Next, the problems: I've got replacement regulators and capacitors, but what if the damage spread to the DRAMS (16Kx1, qty. 36) and the boot EPROM (2708, labelled HGT E000)? If I need them, does anybody have spare memories, or a copy of the EPROM image? I can even rig a 2716 (one supply... yay!) as long as I know what belongs inside. I really want to know what went wrong before I try plugging this thing in again. Regards, Bob

20 years, 10 months

Olivetti PR2300 Printer

by donm＠cts.com

Tomorrow at about 1400 I will be going to a computer disposal session that is held infrequently. Among other items that I will be taking for disposal is the subject printer. It is a unique item in that it is one of the very early inkjet printers and information about it is scarce. It is of typical size and weight for a desktop unit - about the size of an Epson dot-matrix unit - and in rather good condition. If anyone wants this piece as a collectible and is willing to pay packing and shipping from 92037, I will hold it back. But, I must know before 1400 PST or it's gone! - don

20 years, 10 months

OS/2 Warp question - MPTS?

by brianmahoney＠look.ca

Just got a copy of OS/2 Warp version 3 with the Bonus Pack. (on diskette ... ) Loaded it to a notebook I have, 486sx - 8 megs , seems to run just fine. Problem is getting it onto my LAN and the Internet. Win 95 worked fine on this notebook, slow but fine, and I'd like to see what OS/2 looks like on the 'net. Unlike most everyone here, I am NOT a rocket scientist and I'm wondering if there is a fairly simple download or something that would let the notebook see the LAN. The manual says something about needing a LAN server and MPTS. Thanks!

20 years, 10 months

HP 547A?

by jwest＠classiccmp.org

Anyone have an extra HP 547A current tracer probe they would consider a trading/selling? Thanks! Jay West

20 years, 10 months

Bigger hard disk on Toshiba 4010CDT

by r.mueller＠fz-juelich.de

Does anybody know how to get a Toshiba 4010CDT to accept a larger hard disk. It comes with 4 GB but when I want to work with three operating systems (MSDOS; modern Windows and LINUX) this will be a problem if I also want to include applications! Conversely, I am satisfied with the computer otherwise, although it is somewhat older by now, and would like to upgrade instead of retiring it or maintaining two Laptops in order to have space for the bigger operating systems. I did look at Toshiba's site but found nothing except some information that such support is NOT provided by them! They suggest an alternative company but this company does not show any sign of supporting my model. I also would be happier to find a way to alter the BIOS and buy a HDD locally, though I did find one company offering hard disks which they suggest will work with the 4010CDT, while giving no clue that they in some way deal with the BIOS problem. (In any case, it would mean importing the HDD, with a bunch of associated problems, especially if something goes wrong. I have my fill of that trouble!) Thanks to anyone able to help. Bob

20 years, 10 months

For free: TRS-80, software, manuals etc. (Cambridge UK)

by julesrichardsonuk＠yahoo.co.uk

Someone just gave me a boxed Acorn Electron and donated a Tandy TRS-80 Colour Computer 2 at the same time. I have no desire to hang onto the Tandy. It seems to power up ok and be in very good condition under the dirt (it needs a clean!) - no case yellowing etc. Comes with: Fitted dust cover Couple of boxed cartridges Several original tapes TV + tape recorder leads Tape recorder (standard 80's thingy) Operation manuals etc. Several large Tandy Basic turorial books etc. It was destined for the skip otherwise so I couldn't say no - somebody *please* take it off my hands :-) cheers Jules

20 years, 11 months

OT looking for info on Linux Antivirus

by john_boffemmyer_iv＠boff-net.dhs.org

I recently got my damned Linux box up and running and fully plan on using it as a web/email server. Is there a decent and as close to free as possible (hey, I admit it, I'm poor) antivirus that supports scanning of email on the server? -John ---------------------------------------- Founder, Lead Writer, Tech Analyst and Web Designer Boff-Net Technologies http://boff-net.dhs.org/index.html ---------------------------------------

20 years, 11 months

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test-drb February 2004