I've got a set of DEC diagnostic floppies (RX50) and I don't have the decoding scheme at hand to figure out the part number and therefore their usage. I don't know which machine these run on -- Micro PDP-11 or MicroVAX. I sort of suspect they *may* be for my uVAX II because they came with a heap of other goodies, including a working uPDP-11/73, at the same time I got said uVAX II. Given the part numbers listed below could anyone tell me about them (other than the obvious ;-) )? BL-T540B-M1 CZUFDB1 USER TESTS BL-T541B-M1 CZXD1B1 FIELD SERVICE TESTS 1 BL-T542B-MC CZXD2B0 FIELD SERVICE TESTS 2 BL-T565B-MC CZXD3B0 FIELD SERVICE TESTS 3 BL-T583B-MC CZXD4B0 FIELD SERVICE TESTS 4 Thanks for your help. (BTW, should these be added to an archive or two (bitsavers for instance)?) -Chris F. NNNN Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA cfandt(a)netsync.net Member of Antique Wireless Association URL: http://www.antiquewireless.org/