At 2004-01-08 20:24, vartan wrote: >I have come across a mystery TI board of some type and I must say it mystifies me and >piques my curiosity, and thought perhaps someone here may be able to shed some light >on it. I know it must be annoying when so many people often ask silly questions about >random things that have been dug out of bins, but I have been unable to find any >information on this using everything that could be considered a part number on it. > >The 'card' itself is about 10" long and 6.5" wide although there is a backplate of >some sort which extends a good deal longer, and evokes the mental image of some sort >of rack-mounted device. The card also has a metal guide-rail/support bar running >along the length of one side. > >On the (assumed) rear, a 36-pin centronics style connector. >On the opposite end, a 20-pin keyed connector >On the (upper?) edge, two connectors which are shaped sort of like PCMCIA slots but >have 60 pins > >Now for the board itself: >4 side by side 20-pin headers labeled RAM1-RAM4 >4 unlabeled 20-pin headers with pin 1 removed >1 64-pin header with 3 pins removed >1 60-pin header with 1 pin removed > >1 Motorola MC68000 >1 QFP-84 TI chip marked 2559836-001 CF61847FN N 56032 9015 >1 QFP-132 TI chip marked 2559878-0001 CF62258APQ W18005 9017 >1 50MHz oscillator >1 3.6864 oscillator > >at U1, DIP 32 chip marked 2559855-001 TI(c)1990 JAPAN 9019D >at U2, DIP 32 chip marked 2559856-001 TI(c)1990 >The U2-H and U1-L markings make me think they are high/low bytes accordingly. > >at U31, DIP 32 socketed chip marked 2559854-0004 TI(c)1991 SHARP JAPAN 9134 D >at U28, DIP 32 socketed chip marked 2559853-0004 TI(c)1992 SHARP JAPAN 9134 D >The U31-H and U28-L markings, cause me to think a high/low pair as well. > >Only distinguishing markings on the PCB itself are screened text: >INTERFACE CONTROL UNIT >COMMUNICATION BOARD >and on the back on a paper label 2559801-001 AR-Y/ABSR-C 4026-0217 R115 > >and, some pictures >http://users.adelphia.net/~vartan/card1.jpg >http://users.adelphia.net/~vartan/card2.jpg >http://users.adelphia.net/~vartan/card3.jpg > >Well, perhaps this mystery will be solved, I have had this card for something like 5 >years now and am still as curious as ever.
Sounds like part of the logic of an (expensive) printer. The PCMCIA-like slots are probably meant to augment the printer with more fonts. The printer was probably made by SHARP/EPSON/SEIKO in Japan in 1991 or 1992. I have a one-peace board, also with an 68000 and also PCMCIA- like slots which I also assumed to have been part of a printer (and also of Japanese origin, because it also has a NEC 780x (Z80-like CPU). At the same time I also bought a similar ex-printer board with an 68020 by the way. Greetings, Jaap >-- >Author: vartan > INET: [EMAIL PROTECTED] > >Fat City Network Services -- 858-538-5051 http://www.fatcity.com >San Diego, California -- Mailing list and web hosting services >--------------------------------------------------------------------- >To REMOVE yourself from this mailing list, send an E-Mail message >to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in >the message BODY, include a line containing: UNSUB CHIPDIR-L >(or the name of mailing list you want to be removed from). You may >also send the HELP command for other information (like subscribing). -- Author: Jaap van Ganswijk INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
