Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!rutgers!mit-eddie!uw-beaver!apollo!joelm From: joelm@apollo.UUCP Newsgroups: comp.sys.apollo Subject: Re: extra RS232 connector on DN3000? Message-ID: <3521d9c0.c424@apollo.uucp> Date: Thu, 28-May-87 10:34:00 EDT Article-I.D.: apollo.3521d9c0.c424 Posted: Thu May 28 10:34:00 1987 Date-Received: Sat, 30-May-87 01:00:17 EDT References: <8705262201.AA12976@EDDIE.MIT.EDU> <870527005932.2.DP@BANFF.PALLADIAN.COM> Reply-To: joelm@apollo.UUCP (Joel Margolese) Distribution: world Organization: Apollo Computer, Chelmsford, MA Lines: 25 In article <870527005932.2.DP@BANFF.PALLADIAN.COM> Jeffrey Del Papa writes: > > all have an extra 25-pin connector on the back > (in slot number 6). The nodes with the 155 MB disks > do not have this extra connector and it doesn't > seem to be mentioned in the unpacking or operating > manuals for the DN3000 series. Does anyone know > what this extra connector is for? >does the machine also have a tape drive? that is likely what it is for. In any case >if you don't plan to add another tpae drive, cover the scoket so someone doesn't plug >a terminal into it, as your tape drive will stop working. (The serial port is along >the bottom edge, next to the keyboard socket. It is deeply recessed and labeled p2) > The extra connector existed only on the original disk controller for the DN3000's, and was removed in a later revision of the controller since it was never used. You are correct that it was intended for the tape drive, but was unusable (for this machine) since 1/2 height tape drives with formatters were not available using this interface (QIC-II). Joel -- Joel Margolese UUCP: ...{attunix,uw-beaver,decvax!wanginst}!apollo!joelm Apollo Computer ARPA: apollo!joelm@eddie.mit.edu INTERNET: joelm@apollo.com