DEC DSSI board? Maybe?

Tom, Single DSSI controller for the VAX 4000-100x series boxes (desktop style). Dan Snyder ----- Original Message ----- From: "Tom Peters" <tpeters at mixcom.com> To: <cctalk at classiccmp.org> Sent: Wednesday, June 10, 2009 8:19 PM Subject: DEC DSSI board? Maybe? What is it? I have an unidentified board, approx 3.75 inches by 4, or about 94mm x 104mm. It says on the silkscreen, "DSSI DAUGHTER CARD" and "50-21836-01 B1" There's about 4 chips on it, and some SMD caps & resistors and a big honkin' diode. The main chip has something like 200 pins, on all four sides of the chip, soldered to the component side of the board, and sporting a tower-style heat sink apparently cemented to the top of the chip. There's also 3 each 10-pin SIP resistors next to each other, like termination r's. And three each 2-pin jumpers marked "4 2 1" - addressing, obviously. All three are in place = 7. The two main connectors are a black D-shaped one that makes me thing of SCSI SCA, with 50 pins. The other is a blue Berg-style, I'm guessing for an IDC connector on the end of a ribbon cable. The pins that are marked on the board say "1" and "49" so I'm going to say 50 pins as well, with locking ears you close to seat the cable and lock it in place. It was in a Digital Equipment Corp shipping box, one that looks to be the right width for the board but probably twice as long as it needed to be. It was in a static bag- the original, from the looks of it. The grainy photograph on the box doesn't match the board. It's in perfect shape. On the box someone has scrawled "Single DSSI controller for 4000's" Worth anything to anyone? ----- 465. [Philosophy] ". . . a boss who is forced to part a man's hair with a wrench has failed at some point." Heinlein: Podkayne, quoting her mother, _Podkayne of Mars_ --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB: http://www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531