This afternoon David send me a PDF copy of the HP 64000 Logic Developement System Configuration manual. I've posted it in the same directory with the HP disk drive manual. <http://www.classiccmp.org/hp/HP%20Docs/> Joe David Bryan just scanned and sent me a copy of "HP's 5 1/4-Inch Winchester Disc Drive Service Documentation" (HP 09134-90032, August 1983) for the old style HP 9133/9134 and 9135 disk drives. Besides the always useful service information, it includes explainations of which drives can be made to look like 4 1.15Mb floppy drives for use on the HP-85 and other small systems that don't normally use the HP hard drives. I've posted it at "http://www.classiccmp.org/hp/HP%20Docs/". Thanks David! Joe