test-drb July 2008

test-drb@ccmp.vtda.org

182 participants
225 discussions

by sellam＠vintagetech.com

Eric pondered: > > No, just until you're about in your mid-30s or so. > What? Seriously: http://www.nytimes.com/2006/06/12/technology/12ring.html?_r=1&oref=slogin -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

16 years, 5 months

Double-wide equipment cabinets available

by sellam＠vintagetech.com

I have a couple large double-wide 19" equipment cabinets that used to contain the components for a Nicolet NMR spectrometer. They are six feet tall and would hold lots of gear. Before I scrap them I wanted to offer them to anyone who could use them. I would like a token amount (basically the cost of the steel scrap, which would be maybe $30-$40. Local pick-up would be required (I really doubt someone would want to ship these). If there's any interest let me know ASAP and I'll send photos. I need to be rid of these within the next few days as they are consuming valuable space that I need to recover. Please reply directly to me. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

16 years, 5 months

What is a safe way to clean corrosion?

by madodel＠ptdprolog.net

I just took apart a Thinkpad 701c that has a BIOS password that I am attempting to clear. There is some powdery residue caked inside the battery compartment that has leaked into a few areas surrounding it. Is there a safe way to remove this? Mark

16 years, 5 months

Sun & DEC stuff in Rochester

by slawmaster＠gmail.com

I'm trying to get rid of some stuff I'm not using, so if anybody wants to come and get it... I'm open to deals, trades, and negotiation on everything. Sun Ultra 10, 440 Mhz, 256 MB RAM, 9 GB drive. I'd like a little cash ($20?) or booze in exchange for this. Sun Ultra 1, 175Mhz (?), 64 MB RAM, 9 GB hard drive. Trade for beer? 20" Sun monitor, 13w3. Take it for $5 or I'll throw it in with either of the Sun boxes Sun Type 5 keyboard & mouse to go with either of the computers. DEC Multia, Alpha processor @ 166Mhz, 64 MB of RAM, no hard disk. $10? and finally Cisco 7505 router w/ 4 fiber Fast Ethernet ports and FDDI interface. I have tested it, I know it boots. $75 (I feel the need for compensation after hauling this around for 2 years) John -- Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

16 years, 5 months

Pointless question...

by aek＠bitsavers.org

> Suppose one wanted simulate one in modern components. How would you > do it, if you had, say, a million bits to store? Fewest parts would be to use a FIFO feeding the "O" back to the "I" I had thought about building a state sequencer this way once for a project where the sequence was of programmable length, but didn't require branching. -- The ADM3 'A' version differed from the original by replacing the recirculating shift registers with 2102's and a 10 bit counter.

16 years, 5 months

Northstar Advantage in Seattle for sale trade.

by michaelgreen42＠comcast.net

Any interest in a Northstar Advantage? I know pretty much nothing about this machine but it does appear in good shape.

16 years, 5 months

Micro Data PC230 (South Australian computer)

by thrashbarg＠kaput.homeunix.org

Hi, A while ago I got one of these off a friend of a friend and got it going a few days ago. I was wondering if anyone had any information about it, specifically a technical reference manual. I'd like to have a closer look at its architecture, just out of curiocity and for this... The hard disk interface is a WD33C93 and has a BIOS to let MS-DOS access it. It currently has its original 20MB Miniscribe hard drive internally and I attached an external 140MB 5.25" SCSI drive. Just as an experiment, I attached a CD-ROM drive to it and set the number of SCSI drives to three. It detected the CD-ROM drive when there was a disk in it, but MS-DOS doesn't natively support ISO9660 drives. So I made a 20MB hard disk image in QEMU, partitioned it in FDISK and formatted it, then burnt the image to a CD. MS-DOS detected it as a drive first go. This shouldn't be a surprise if you know a thing or two about the SCSI architecture. This makes me wonder if there's such thing as an ISO9660 extension for MS-DOS that will let me access CD's in this way. The issue is if I don't have a disc in the CD-ROM drive when it boots it will fail to detect the drive. The other option is writing a driver for the WD33C93... Thanks, Alexis

16 years, 5 months

more adm3 stuff

by sellam＠vintagetech.com

John Floren queried: > Do you guys know any good fixes for that kind of thing, or am I cursed > to hearing that terrible head-numbing whine forever? No, just until you're about in your mid-30s or so. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

16 years, 5 months

multiprocessor microPDP-11/83

by chd_1＠nktelco.net

A post about a multiprocessor PDP-11/45 made me think about a multiprocessor microPDP-11/83. Is it possible to connect the Qbus of two microPDP-11/83s together? what about Unibus PDP-11/84s? The -11/83 is more interesting, because I can replicate it. Since bus arbitration is handled by the processor, arbitration on one of the processors would need to be disabled. The KDJ11-B Users Guide doesn't suggest a way to do this. The arbitrating processor would also have to field all the interrupts. I am tired of reading about the first computer on the internet... Besides, I have not heard any of you wise guys argue that there couldn't be a first computer on the internet (or Internet) or any network since a single computer can't make up a network. -chuck

16 years, 5 months

Small Torx (Was: What is a safe way to clean corrosion?

by dm561＠torfree.net

Don't overlook the Dollar stores (or whatever they're called in your part of the world); that's where I found my tiny torx. And FWIW, up here N of 49 Active sells a fairly complete 32-pc security bit set for ~$10.00. m

16 years, 5 months

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test-drb July 2008