Does anyone have any information on a Plessy board model number PM DCV51? It appears to be a disk controller one 34 pin connector and four 20 pin connectors. It has plastic handles on the ends like a QBUS board. (I suppose it could also be a quad wide unibus board but I don't think so.) Markings on one of the chips is: P/N 706131-1001B S/N S-179 1/5/87 Model PM DCV51 (could be OCV51 the D and O are hard to tell) There is a NEC D7261AD chip on the top, an uncovered EPROM (worrisome), several PALs and a large chip (68pin DIP) labelled AM29x305 Anyone? --Chuck