HP "Field Guide" ?

Is there a "field guide" for HP 9000/300 systems like we have for DEC? I would like to find more info on, for example, the 98547A RGB video interface, 7958B Opt 550 disk drive unit, etc. Also, in my 9000/375 there is a board which fits into a smaller card guide assy (i.e., it is not the same physical size as the CPU and video modules, but smaller) which has a paper sticker with several numbers including the part number: A3057674-11. It has an 80286 CPU chip on it which leads me to think its some sort of I/O processor (?). No connector headers on the board; all connections go through the edge connector. Can't find anything while searching on the A3057 portion of the p/n (Axxxx is a type of part numbering scheme HP used for some boards and stuff) nor on many combinations of parts of the p/n. Thanks for your help. BTW, while perusing the 'Net through Google looking for DEC SCSI boards I found an RQZX1 (M5977) for Unibus for 'only' $2999.00 through a reseller <http://www.varx.com/MODULES.HTML>. A Qbus RQZX1 was pegged at the same price. Geeez, my wife is hoping to get only $2500 for her used 1993 Jeep Grand Cherokee with 106k. Maybe they'll take a swap plus a few bucks for either one? :-) Regards, Chris F. NNNN Christian R. Fandt, Treasurer Antique Wireless Association, Inc. Jamestown, New York USA email: cfandt at netsync.net Electronic/Electrical Historian URL: http://www.antiquewireless.org/