This port is located in modern SUN Sparcs such as SUN LX/Classic/SS4/5/10/20 and has both serial ports (A/B) in the same connector. Simply plugging in a regular serial cable in results in accessing port A.
(at the computer)
25 PIN D-SUB FEMALE at the computer.
|4||RTS||A||Request to Send|
|5||CTS||A||Clear to Send|
|6||DSR||A||Data Set Ready|
|11||DTR||B||Data Terminal Ready|
|13||CTS||B||Clear to Send|
|15||TC||A||Transmit Clock from DCE, usually not used|
|17||RC||A||Receive Clock from DCE, usually not used|
|18||TC||B||Transmit Clock from DCE, usually not used|
|19||RTS||B||Request to Send|
|20||DTR||A||Data Terminal Ready|
|21||TCO||A||Transmit Clock from DTE, usually not used.|
|25||TCO||B||Transmit Clock from DTE, usually not used.|
Note: Direction is DTE (Computer) relative DCE (Modem).
Note: Do not connect SHIELD(1) to GND(7).
Contributor: Niklas Edmundsson
SUN Field Engineer Handbook, VolumeII, 12/15/93
Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07