-----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Michael Thompson Sent: Wednesday, March 20, 2013 4:28 PM To: cctech Subject: The RICM Needs Two DEC BC09A Cables The RICM has their PDP-9 processor and core working nicely now, except for the DAC and DZM instructions. Once we get the processor and paper tape reader/punch restoration completed the next task will be connecting the TC59 tape controller and the TU20 tape drive. Bitsavers has the TC59 manuals. I bought an HP 7975A maintenance manual for the TU20 tape transport that is now scanned and on Bitsavers. We don't have any documentation for the rack of electronics in the bottom of the TU20 that connects the 7975A to the TC59. Does anyone have DEC TU20 documentation? Where could we find two BC09A cables to connect the TC59 to the PDP-9 processor? -- Michael Thompson I have no BC09's, but I do have the following document. I can send you a scan if you like. 110 2 ?aDigital Equipment Corporation. 245 10 ?aTU20 tape transport maintenance manual,?b(Order no. DEC-00-I4AB-D) /?cDigital Equipment Corporation,?fJanuary 1971. 250 ?a4th print. (Rev.) 260 ?aMaynard, Mass. :?bDigital Equipment Corp.,?cc1971. 300 ?a[v, 79 p. ; variously paginated] :?bill. ;?c28 cm. 490 1 ?aDEC-00-I4AB-D 505 2 ?aIntroduction -- Installation -- Operation and programming -- Principles of operation -- Maintenance -- Engineering drawings. 520 0 ?aThis manual,together with referenced documents, provides operation and maintenance information for the TU20 tape transport used with the PDP-8, PDP-9, PDP-15,or PDP-10 computers. The levels of discussion assume that the reader has a familiarity with the applicable processor, as well as a working knowledge of similar magnetic tape systems. Cynde Moya Librarian/Archivist, Vintage Computing Living Computer Museum 206 342 2385 http://www.LivingComputerMuseum.org