Silicon Graphics O2+ - Serial; Parallel; Table A-1 Serial Port Pinout Assignments; Table A-2 Parallel Port (IEEE 1284-C) Pinout Assignments

190 007-4486-001
A: Technical Specifications
Serial
Table A-1 shows cable pinout assignments for the serial ports.
Parallel
Table A-2 shows the cable pinout assignments for the IEEE 1284-C parallel port for the
Silicon Graphics floppy drive or for a printer. (The floppy drive has an additional
connector for a printer.)
Table A-1 Serial Port Pinout Assignments
Pin Assignment Description
1 DCD Data Carrier Detect
2 RD Receive Data
3 TD Transmit Data
4 DTR Data Terminal Ready
5 SG Signal Ground
6 DSR Data Set Ready
7 RTS Request to Send
8 CTS Clear to Send
9 RI Ring Indicator
Table A-2 Parallel Port (IEEE 1284-C) Pinout Assignments
Pin Assignment Pin Assignment
1 BUSY 19 SIGNAL GROUND (BUSY)
2 SELECT 20 SIGNAL GROUND (SELECT)
3 nACK 21 SIGNAL GROUND (nACK)
4 nFAULT 22 SIGNAL GROUND (nFAULT)
5 pERROR 23 SIGNAL GROUND (pERROR)