test-drb June 2008

test-drb@ccmp.vtda.org

194 participants
304 discussions

by hardware＠ees1s0.engr.ccny.cuny.edu

Hello. I ran across this photo: http://w140.com/kurt/ibmlab2.jpg Do you think it is an IBM lab? What are they working on? thanks, -kurt

15 years, 11 months

big bucks for a Tek computer on eBay

by aek＠bitsavers.org

> apparently 6800 based. O woe is me. 322$ + 90$ ~$400 isn't 'big bucks' The days of getting this stuff cheap are LONG gone. The original 4051 used a 6800, 4052s simulate a 6800 with 2901s and are MUCH faster. 'posthuman' buys up a lot, along with 'futuresources' and 'wehavedealt', I wonder who they are?

15 years, 11 months

Looking for AMD9511 datasheet

by ragooman＠comcast.net

Would someone have a datasheet for the AMD9511 ? This is a FPU coprocessor from '79 =Dan -- [ "go get 'em" ] [ Pittsburgh --- http://www2.applegate.org/~ragooman/ ]

15 years, 11 months

photo of IBM lab?

by aek＠bitsavers.org

> What are they working on? IBM 705

15 years, 11 months

NEC D7220AD datasheet wanted

by ajp166＠bellatlantic.net

> >Subject: Re: NEC D7220AD datasheet wanted > From: "Seth Morabito" <sethm at loomcom.com> > Date: Fri, 20 Jun 2008 10:26:59 -0700 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Cc: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > >On Fri, Jun 20, 2008 at 7:14 AM, maurice smulders ><maurice.smulders at gmail.com> wrote: >> Make sure you google for uPD7220 (that's the NEC prefix) >> >> Maurice >> > >That was my mistake -- I kept searching for NEC 7220 and NEC D7220, >without the 'uC'. Couldn't find anything. Yes it would muck up the works. The part was uPD7220. I have a few and likely apnotes and all as well. Allison >I have a copy of it now, thanks! > >-Seth

15 years, 11 months

Looking for AMD Microprocessors and Peripherals data book(early 80's)

by ragooman＠comcast.net

Would anyone have this databook ? Looking for AMD Microprocessors and Peripherals data book(early 80's) This would contain the programmers reference for the AMD9511 fpu chip. I'm working with this chip and like to get a copy for this. thanks, Dan -- [ Pittsburgh --- http://www2.applegate.org/~ragooman/ ]

15 years, 11 months

request to post a message

by info＠vintagetechnology.co.uk

Hi, Could I please post the following message to cctalk? thanks. It's as follows: Title: July '08 Vintage Technology magazine is available Main text: July '08 edition of Vintage Technology magazine is now out and can be obtained from www.vintagetechnology.co.uk . Only ?0.99p / $1.99 for a 40+ page magazine devoted to the collection, preservation and history of all aspects of digital and electronics technology, including computers, arcade games, calculators, led watches, phones, appliances, gadgets and robots. This issue features: The first pocket computers Historic hypertext and how the WWW could have started much earlier The development of car driving games Vintage personal data-calculators Entex handheld games Cordless phones Flip clocks Merits of using traditional auction houses vs. eBay Commodore PET repairs Daisy wheel printers ZX Spectrum memories Plus sections on museums & collections, latest events & news and book reviews. VTM aims to explore the legacy of recent past technology, explore new 'electronica' which could become or already is collectible, be an enjoyable resource for collectors & historians and celebrate the history and personalities surrounding this subject.

15 years, 11 months

DEC H7441 Powersupply

by asholz＠topinform.de

Hello all, was there a similar manual for for the H7441 PSU available as for the H720 PSU (which can be found on bitsavers pdf/dec/pdp11/pwrSupply/H720_PowerSupplyMan.pdf )? If yey could someone provide a scan? --Andreas

15 years, 11 months

Westinghouse W1642 terminal... any info?

by ian_primus＠yahoo.com

I posted this over at comp.terminals, but I figured I'd send it out to this list too... I've just accquired a Westinghouse W1642 terminal, and I'm looking for any kind of documentation I can find on it. It's clearly somewhat of a single purpose terminal, originally used at airlines. The keyboard is weird, and is missing many "useful" characters, like brackets, slashes, pipe and comma. Instead, it has various weird symbols, command keys, and such. It has no shift key, and only displays upper case. It also appears to support multiple sessions, with keys to switch between them, and display a split screen mode. Typing in any of the sessions will echo to the screen, even with nothing connected. On the back are four female DB25 connectors - LINE/PRINT, PRINT1, PRINT2 and AUX. I've tried connecting it up to a computer and sending text to it, at 9600 baud. Connecting an RS232 cable to AUX causes the CTRL-DOWN indicator at the bottom of the screen to go away, but only for the full screen session. Sending random junk to the terminal through the serial port occasionally is able to bring up a message at the top, something about an invalid printer, but no other garbage displays. So far, I've only tried it at 9600 baud, I didn't have time last night to try other speeds. Inside the terminal seems rather conventional, I haven't dismantled it completely, but near each port is a 75154 (quad line receiver), and it appears that farther back on the board are other comms chips (socketed). I was expecting to see 1488/89 pairs, but haven't seen those in there yet. Two of the ports are on a daughter board, the other two are on the main board. The boards are partially hidden by the monitor chassis, and I've not pulled them out to look yet. There are some dip switches on the main board though. So.. basically, I know that this isn't going to be a great computer terminal, with it's lack of important command keys, (no ESC either!). That's too bad, since it's very well built, has a very nice keyboard, and a very sharp, clear screen. But, I would like to be able to do something with it, send text to it, use it as a console command monitor, something. Does anyone have any kind of documentation or information on this beastie? Thanks! -Ian

15 years, 11 months

Listing paper FTGH (Yorks, UK)

by john.haigh＠zoo.co.uk

Hi, Must be a common problem getting rid of spare paper. Did you get any takers as I have some too. Anyone who was disapointed? Thanks, John

15 years, 11 months

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test-drb June 2008