Serial; Parallel; Table A-1 Serial Port Pinout Assignments; Table A-2 Parallel Port (Ieee 1284-C) Pinout Assignments - Silicon Graphics O2+ Hardware Reference Manual

A: Technical Specifications

Serial

Parallel

190
Table A-1 shows cable pinout assignments for the serial ports.
Table A-1 Serial Port Pinout Assignments
Pin Assignment
1 DCD
2 RD
3 TD
4 DTR
5 SG
6 DSR
7 RTS
8 CTS
9 RI
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-2 Parallel Port (IEEE 1284-C) Pinout Assignments
Pin Assignment
1 BUSY
2 SELECT
3 nACK
4 nFAULT
5 pERROR
Description
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
Pin Assignment
19 SIGNAL GROUND (BUSY)
20 SIGNAL GROUND (SELECT)
21 SIGNAL GROUND (nACK)
22 SIGNAL GROUND (nFAULT)
23 SIGNAL GROUND (pERROR)
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