Table 8-2 Serial Port Numbers And Correspondence To Irix Device Files - Silicon Graphics Origin200 Owner's Manual

Chapter 8: Installing and Configuring Peripherals
182
In a one-module system, the ports are numbered 1 and 2. In a two-module system, the
ports on the first module are numbered 1 and 2, and the ports on the second module are
numbered 3 and 4. See "How Devices Are Detected and Numbered" in Chapter 4.
Common types of serial devices you can attach to these ports are:
• serial (ASCII) terminals
• modems
• printers
• other computers (using terminal emulation or other serial protocols)
The serial ports are capable of transferring data at speeds ranging from 50 baud to
460 Kbaud in RS-232 mode. The default serial port configuration is RS-232, but the serial
ports can be opened programmatically in RS-422 mode.
Like those found on the O2 and the rest of the Origin product line, the serial port
connectors are DB9, male, and are designed to be IBM-compatible. Because of this, they
do not use the same pinouts as DB9 serial ports on older Silicon Graphics systems.
Table 8-2 shows the correspondence of ports to IRIX device files and protocols.
Table 8-2 Serial Port Numbers and Correspondence to IRIX Device Files
Module Serial Port Number
First 1 (system console)
2
Second 3
4
For more information on how devices are detected and configured, see
Note:
"Determining the Devices Installed on Your Server" in Chapter 4.
For serial port pinouts, see Appendix A, "Connector Pinout Assignments." For
information on specific serial cables, see Appendix B, "Cable Descriptions."
IRIX Device File IRIX Device File
(RS-232 Mode) (RS-432 Mode)
/dev/tty[c,d,f,m]1 /dev/tty4[d,f,m]1
/dev/tty[c,d,f,m]2 /dev/tty4[d,f,m]2
/dev/tty[c,d,f,m]3 /dev/tty4[d,f,m]3
/dev/tty[c,d,f,m]4 /dev/tty4[d,f,m]4
IRIX Device File
(Midi Mode)
/dev/ttymidi1
/dev/ttymidi2
/dev/ttymidi3
/dev/ttymidi4