test-drb January 2013

test-drb@ccmp.vtda.org

222 participants
294 discussions

Early CD-ROMs was: NASA computers circa 1969

by mcguire＠neurotica.com

On 01/04/2013 03:46 PM, Bill Sudbrink wrote: > Yes. That was the test platform for an early CD-ROM company > I worked for. We also had a Meridian Data CD-Publisher. > It wrote 9-track tapes that we sent to PDO Holland. They > would send us back some count of CDs along with the glass > master. That was what? 1983 or maybe 1984. I had one of > those glass masters in my office for a while but I've lost > it somewhere along the way. You didn't work for a flaming asshole of epic proportions who went by the name of "Murf", did you? -Dave -- Dave McGuire, AK4HZ New Kensington, PA

11 years, 11 months

Looking for: IBM 5110/5120 I/O bus terminator

by derschjo＠gmail.com

Subject line says it all -- and I know this is a long shot. Anyone have one going spare? Finally got my 5120 working (after scrounging a keyboard, display, and an ROS board from a parts machine*) and of course I had no idea that a terminator was required in order for the internal drives to function. Iimagine these are hard to find, but I haveto ask... Thanks as always, Josh (*stillneed a Command/Language ROS board since it turns out my 5120 had not one but two bad ROS boards, but I've borrowed it from my 5110 for the time being. I'm assuming that it's pretty much impossible to repair these things...)

11 years, 11 months

Daemonic Quake players [was RE: FS. Working PDP 11/83 deskside case (UK)]

by RichA＠vulcan.com

From: geneb Sent: Wednesday, January 09, 2013 2:59 PM > On Wed, 9 Jan 2013, John Many Jars wrote: >> On 9 January 2013 19:07, Richard <legalize at xmission.com> wrote: >>> PDP-11 can't DOOM. PC wins. >> My four year old daughter (at the time): >> "I want to make more BLOOD!" > One of the most efficient killing machines I've ever seen in Quake was the > daughter of our tech support lead (way back in my sysadmin days). The > nerd rage that would flow on the net when someone discovered they'd been > repeatedly and brutally hammered by an 11 year old wisp of a girl wearing > pony tails and a frilly pink dress was *epic* > I nearly fell out of my chair in a fit of laughter the time I heard her > mutter, "Quit running! You'll only die tired!" ROTFLMAO. That's going to keep me snickering for a long time. That line could come from one of the better SF stories I've read, say Walter Jon Williams or John Scalzi. Thank you. Rich Alderson Vintage Computing Sr. Systems Engineer Vulcan, Inc. 505 5th Avenue S, Suite 900 Seattle, WA 98104 mailto:RichA at vulcan.com mailto:RichA at LivingComputerMuseum.org http://www.LivingComputerMuseum.org/

11 years, 11 months

Commodore SX-64 new picture tubes for sale 25$ + shipping

by rampaginggreenhulk＠yahoo.com

I probably have 8 left. I dropped one. Man that shadow mask was all warped to heck. Weird forces are in play when there's an implosion.

11 years, 11 months

looking for supercomputers, Ardent, Stardent, Titan or Portable Graphics Mainframe

by michael.99.thompson＠gmail.com

> From: Richard <legalize at xmission.com> > Date: Tue, 08 Jan 2013 11:01:44 -0700 > Subject: Re: looking for supercomputers, Ardent, Stardent, Titan or Portable Graphics Mainframe > > In article <BLU002-W211CABDFBFAD39F8F9562C7BA240 at phx.gbl>, > Randy Dawson <rdawson16 at hotmail.com> writes: > >> Any of these lying around? I ask every year or so... > > I have had ebay searches running for 10+ years and have never turned > up anything. I think these things are extremely scarce to > non-existent at this point. I don't recall hearing of any in the > hands of collectors anywhere, but of course, as soon as I say this, > someone will pop up and say "I have 3". :-) The RICM has one... https://sites.google.com/a/ricomputermuseum.org/home/Home/equipment/ardent-… -- Michael Thompson

11 years, 11 months

Major progress on S2I project

by LYNCHAJ＠YAHOO.COM

Hi! The N8VEM SCSI to IDE/SD project has been renamed the S2I project. There has been large progress of late and things are really shaping up. I have distributed 3 of the 4 remaining prototype PCBs and have accumulated a short list of hardware changes for the next PCB revision. http://n8vem-sbc.pbworks.com/w/page/62549548/S2I%20Status Thanks and have a nice day! Andrew Lynch

11 years, 11 months

TRS-80 Model II Fixed Disk Controller Support

by ball.of.john＠gmail.com

>Some of the controllers also provided power on the control? Cable to power >on secondary enclosures. Technical bulletins state that yes the cabling for a second drive is modified to accomidate for the system to power on the external drives by means of a relay. If you didn't get the memo and you attached a second drive you would be greeted by a resistor on the drive burning out. :)

11 years, 11 months

the Internet has turned 30 years old

by tom_a_sparks＠yahoo.com.au

" 30 years ago, at flip of a switch, the internet as we know it WAS BORN How TCP/IP nearly fell at the first hurdle By Gavin Clarke ? Get more from this author Posted in Networks, 3rd January 2013 08:59?GMT Thirty years ago this week the modern internet became operational as the US military flipped the switch on TCP/IP, but the move to the protocol stack was nearly killed at birth. The deadline was 1 January, 1983: after this, any of the Advanced Research Projects Agency Network's (ARPANET) 400 hosts that were still clinging to the existing, host-to-host Network Control Protocol (NCP) were to be cut off. The move to packet switching with TCP/IP was simultaneous and co-ordinated with the community in the years before 1983. More than 15 government and university institutions from NASA AMES to Harvard University used NCP on ARPANET. With so many users, though, there was plenty of disagreement. The deadline was ultimately set because everybody using ARPANET was convinced of the need for wholesale change. TCP/IP was the co-creation of Vint Cerf and Robert Kahn, who published their paper, A Protocol for Packet Network Interconnection in 1974. ARPANET was the wide-area network sponsored by the US Defense Advanced Research Projects Agency (DARPA) that went live in 1969, while Cerf had been an ARPANET scientist at Stanford University. The military had become interested in a common protocol as different networks and systems using different protocols began to hook up to ARPANET and found they couldn?t easily talk to each other, Cerf, who today is vice-president and "chief internet evangelist" at Google, announced the 30th anniversary of the TCP/IP switchover in an official Google blog post titled "Marking the birth of the modern-day Internet". The 1983 deadline?s passing was anticlimactic, Cerf recalls, considering how important TCP/IP became as an enabler for the internet. Cerf writes: When the day came, it?s fair to say the main emotion was relief, especially amongst those system administrators racing against the clock. There were no grand celebrations?I can?t even find a photograph. The only visible mementos were the ?I survived the TCP/IP switchover? pins proudly worn by those who went through the ordeal! >Yet, with hindsight, it?s obvious it was a momentous occasion. On that day, the operational Internet was born. TCP/IP went on to be embraced as an international standard, and now underpins the entire Internet. It was a significant moment, and without TCP/IP we wouldn?t have the internet as we know it. But that wasn?t the end of the story, and three years later TCP/IP was in trouble as it suffered from severe congestion to the point of collapse. TCP/IP had been adopted by the US military in 1980 following successful tests across three separate networks, and when it went live ARPANET was managing 400 nodes. After the January 1983 switchover, though, so many computer users were starting to connect to ARPANET - and across ARPANET to other networks - that traffic had started to hit bottlenecks. By 1986 there were 28,000 nodes chattering across ARPANET, causing congestion with speeds dropping from 32Kbps to 40bps across relatively small distances. It fell to TCP/IP contributor Van Jacobson, who?d spotted the slowdown between his lab in Lawrence Berkeley National Laboratory and the University of California at Berkeley ? just 400 yards and two IMP hops apart ? to save TCP/IP and the operational internet. Jacobson devised a congestion-avoidance algorithm to lower a computer's network data transfer speed and settle on a stable but slower connection rather than blindly flooding the network with packets. The algorithm allowed TCP/IP systems to process lots of requests in a more conservative fashion. The fix was first applied as a client-side patch to PCs by sysadmins and then incorporated into the TCP/IP stack. Jacobson went on to author the Congestion Avoidance and Control (SIGCOMM 88) paper (here) while the internet marched on to about one billion nodes. And even this is not the end of the story. Years later, in an interview with The Reg, Jacobson reckoned TCP/IP faces another crisis - and, again, it's scalability. This time, the problem is millions of users surfing towards the same web destinations for the same content, such as a piece of news or video footage on YouTube. Jacobson, a Xerox PARC research fellow and former Cisco chief scientist, told us in 2010 about his work on Content-Centric Networking, a network architecture to cache content locally to avoid everybody hitting exactly the same servers simultaneously. You can read more here. ? " - http://www.theregister.co.uk/2013/01/03/operational_internet_anniversary/ i've been meaning to post this PS: I was born in 1983 :cry: --- tom_a_sparks "It's a nerdy thing I like to do" Please use ISO approved file formats excluding Office Open XML - http://www.gnu.org/philosophy/no-word-attachments.html Ubuntu wiki page https://wiki.ubuntu.com/tomsparks 3 x (x)Ubuntu 10.04, Amiga A1200 WB 3.1, UAE AF 2006 Premium Edition, AF 2012 Plus Edition, Sam440 AOS 4.1.2,? Raspberry Pi model B, Microbee?Premium Plus+, Roland DXY-1300 pen plotter, Cutok DC330 cutter/pen plotter Wanted: GEOS system (C64/C128), Atari ST, Apple Macintosh (6502/68k/PPC only)?

11 years, 11 months

HP 3000 microcode

by jdbryan＠acm.org

Does anyone have a copy of the "HP 3000 Series III Microprogram Listing Manual" (part number 30000-90136)? Bitsavers has the Series II microcode manual (30000-90023), and while that is helpful, it's not authoritative for the Series III. Thanks. -- Dave

11 years, 11 months

Need help with a 11/23+ and a M8061 RL02 card.

by g-wright＠att.net

The system has M8189 cpu M8067 memory 256k M8029 RX02 M8061 RL02 M8639 HD controller Everything works except the M8061. Jumpers are set to Factory default. I did add the Q22 jumper just in case. There is always a chance its a bad controller card. The drive will come on line but that's about it. If I try to boot from it. i get an error, 'no controller' . If its running under RT11, booted off the RX02 , I get 'cant read directory ' Any words of wisdom out there Thanks, Jerry

11 years, 11 months

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test-drb January 2013