Hello again, not quite the kind of things I am collecting, so I need help with finding out what precisely this is, and if somebody might be looking for it. I saved a couple of boards from getting scrapped, and if nobody wants them in total, I'll be happy with the chips alone (all the significant ones are in sockets, so I needn't even solder to harvest ;-). So, heads up please if you know something about one of these boards or want to have one. Sorry, no pictures available (yet). According to date codes, all of the boards must be from late 1983 or 1984. The boards _look_ OK, but I cannot test any of them. 1) Ungermann-Bass ISA board, the old extra long format (approx. 340mm or 13.4"), appears to be a 2261A type Ethernet adapter (?), has 18 DRAM chips, Intel 80186, C82586, NEC D8255, 24-pin chip with heat sink (glued on, so I cannot read what's on the chip itself). At the panel, there is a 15-pin sub-D female connector with posts for retaining screws (didn't someone mention lately that some manufacturers had different opinions about the slide-lock retainer for AUI interfaces?) and a red 5mm LED. 2) Ungermann-Bass motherboard, approx. 385mm * 305mm (15.15" * 12"), marked "LPB3 6600" or "LPB3 MODEL 6410", with Z80A CPU, 2 Z80 CTCs, 64kb DRAM (32 * 4116), EPROM (I guess a 2716, did not peel off the sticker yet). Near the center of one of the long edges is a 10-pin power connector: +5, +5, GND, GND, +12, -12, GND, +24, -5, GND. Along one of the short edges are three 50-pin Berg-style connectors (no recognizable description, but two of them appear to be driven mainly by a bunch of 74LS374s). At opposite corner: 10-position LED array, 8-position switch array. Along the other long edge, an I/O board can be fitted, and there are two different boards fitted to the two motherboards I have: 2a) "MODEL 6402A": 2 * RS232, female 25-pin sub-D connector, labelled "SERIAL PORT 1" and "SERIAL PORT 2"; 1 * IEEE 488 (labelled so), real-time clock (guess so, there is an OKI MSM5832 chip, a crystal, and a 3.6V NiCd battery). Other chips: Z80ADART, Z80APIO, TMS9914A (IEEE488 controller), Z80ADMA. 2b) "MODEL 6401": 4 * RS232, female 25-pin sub-D connector, labelled "SERIAL PORT 1" through "...4", then "PARALLEL PORT 5" and "PARALLEL PORT 6". Chips: Z80APIO, 2 * Z80ASIO. 3) Qbus-like board, supposedly a CPU, handles made by DEC, board is 4 slots wide, labelled "PCS" (is that PCS CADMUS?), has Motorola MC68000L10, 4k SRAM (2*6116), 16k EPROM (2*2764), clock chip (MM58167), battery. Between the handles, there are two 40-pin 3M connectors (Berg style). The EPROMs have stickers saying MINITOR MINITOR R900.123 R900.123 E9 2.200LO E10 2.200HI Any hints? - In case you want to trade: I am still looking for a sound card for my friend's IBM PS/2 (Microchannel). I cannot buy one of those currently offered on eBay because they again won't ship outside U.S. - darn! -- Andreas Freiherr Vishay Semiconductor GmbH, Heilbronn, Germany http://www.vishay.com _______________________________________________ cctech mailing list cctech(a)classiccmp.org http://www.classiccmp.org/mailman/listinfo/cctech