test-drb

test-drb@ccmp.vtda.org

101090 discussions

by shoppa＠trailing-edge.com

n 12/20/2010 4:38 PM, Chuck Guzis wrote: > Something you don't see every day: > > http://www.ioffer.com/i/intel-paragon-super-computer-180057571 > > --Chuck The Paragon (and Delta before it - I was much more familiar with the Delta) represented the pinnacle in ultra-GFlop multiprocessing of the early 90's especially for "embarassingly parallelizable" code. If the compiler could make your code run and your problem fit into the memory space of a node, wow, the Delta was astonishingly kick-ass compared to anything else out there at the time. That said, it does not strike me as an especially "something to be run at home" machine. Those who want to do this at home are already doing BOINC with machines 2 decades newer or they have their own Beowulf cluster. This is the fickle world of parallel supercomputing. I think CHM has/had a nice Paragon on display and I recall seeing the cabinets and prominent nameplate of the Touchstone Delta. Tim.

15 years, 5 months

more or less [OT]: A new standard for lists?

by tshoppa＠wmata.com

> Didn't Usenet die back in the late 1990s? Every September. Wait, is September 1993 over yet? Tim.

15 years, 5 months

Columbus, OH

by legalize＠xmission.com

Anyone in Columbus, OH that could help me with a "pickup only" item on ebay? Please email me off-list. Thanks! -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 5 months

AT&T 3B1 / 7300 / UNIX PC DMA Data LSI schematic

by classiccmp＠philpem.me.uk

Hi guys, I'm trying to track down a copy of the schematics (if any still exist) for the DMA Data LSI used in the AT&T Unix PC (aka the AT&T 3B1 or AT&T 7300). The Technical Reference Manual scans which were posted here earlier include the DMA Address LSI, but not the DMA Data LSI. Unfortunately about 80% of the DMA logic is in.... *drumroll*... the Data LSI. The Address LSI is basically a glorified presettable up-counter. These should be in the AT&T UNIX PC Technical Reference Manual, if anyone has a copy kicking around. I already have the DMA Address LSI, Video LSI, 512k Motherboard, 1MB Motherboard and 2MB Motherboard schematics. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 5 months

Unknown TI logic series

by cc＠informatik.uni-stuttgart.de

Hi everyone, we've had a look inside our IME 122 calculator and discovered that it is full of SN14xx logic ICs. They are mainly from TI, but there are also some >from Motorola and others. It seems that they have the same function and pinout as the SN74xx parts but there must be a difference since the machine has quite a lot of SN1401 (the SN7401 is a quad open-collector NAND), but there are no pullup resistors anywhere! Some of the types are SN1400, SN1401, SN1474, SN1490; the ALU is made up of SN1482 and SN1483. Anyone knows this series? BTW the supply voltage is 5V. Christian

15 years, 5 months

Uncommon: Intel Paragon on iOffer

by cclist＠sydex.com

Something you don't see every day: http://www.ioffer.com/i/intel-paragon-super-computer-180057571 --Chuck

15 years, 5 months

Need help with Project Northstar/Data I/O System-19/ADM, Terminals (dwight elvey)

by melamy＠earthlink.net

The Northstar mother board uses 8251s which require CTS to be active in order for the usart to transmit. There are jumper headers on the motherboard that allow you to strap them so they are active by default so you can use just a three wire RS232 connection. regards, Steve Thatcher -----Original Message----- >From: "Robert J. Stevens" <trebor77 at execpc.com> >Sent: Dec 18, 2010 11:13 AM >To: cctalk at classiccmp.org >Subject: RE: Need help with Project Northstar/Data I/O System-19/ADM, Terminals (dwight elvey) > >Message: 15 >Date: Sat, 18 Dec 2010 06:46:57 -0800 >From: dwight elvey <dkelvey at hotmail.com>RE: Need help with Project Northstar/Data I/O System-19/ADM Terminals (dwight elvey) >Hi > It is unlikely that there is a problem with the 2708s If the programmer said they >were good, I'd expect them to be fine. > The places I'd look are first the RS232 connection. The fact that the canon >book works on one machine doesn't mean it will work on another. As well >as the data lines, there are handshake wires that need to have the right >levels. > He said that he'd single stepped the code, what were the results of >that? what did it do or not do right?? >Dwight > >It just goes crazy as the Prom was not burnt correctly >Bob > >Turns out that the Problem is that the Data I/O System-19 I am using doesn't want to load the Hex file as INTEL. It will only load a File if it is flagged as BINARY and that doesn't give a proper code Image. I am trying to get a fellow to see if his System-19 will load the file and burn the 2708 Properly then I can get mine Fixed I HOPE. >I also have been Re-Erasing the EPROMs as I go along. >Bob >

15 years, 5 months

Bendix G-15 Diode Tester

by wdonzelli＠gmail.com

The Diode Tester unit for a Bendix G-15 very recently sold on Ebay. I would like to know who won it. Did anyone here? You can reply off list (I can be very discrete) - I have some questions to ask. -- Will

15 years, 5 months

Sports! and Star Trek

by aek＠bitsavers.org

http://www.briancasey.org/artifacts/astro/moon.cgi just as I suspected, Full Moon

15 years, 5 months

Service bureaus (Was: Tek 4051 firmware listing

by jonas＠otter.se

> I've always wondered what the Scandanavians do to differentiate 0 > from O from ?. They don't differentiate 0 from O- Although when I learnt Morse Code (at a Swedish Army facility) together with a group of radio amateurs in the 70s, we were taught to slash the zeroes (contrary to the IBM mainframe people) and write the Es as reversed 3s. And Swedes always cross the 7s. About the letter '?' in Danish and Norwegian, which is written '?' in Swedish (with the r?ck d?ts) and pronounced 'er', it is obviously differentiated from Oh and zero in everyday writing by the slash or dots. What the Danish or Norwegian radio amateurs or mainframe people do to resolve the conflict they might have there, I have no idea. /Jonas

15 years, 5 months

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