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How do I configure a second serial port, /dev/ttyb (COM2)?

April 26, 2017com2 configure dev port serial

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How do I configure a second serial port, /dev/ttyb (COM2)?

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By default Solaris only enables /dev/ttya. But the modem is usually on /dev/ttyb (or COM2) if you have a serial mouse. If you don’t have a /dev/ttyb file, then you don’t have the second serial port defined. For Solaris 7, use admintool and select “Serial Ports.” The following are instructions for Solaris 2.6 and 2.5.1. To add the second serial port, perform the following as root. For other serial ports and internal modems follow the same steps but uncomment the appropriate line in the asy.conf file. Edit file /platform/i86pc/kernel/drv/asy.conf as follows: Solaris 2.6: Replace /platform/i86pc/kernel/drv/asy.conf with this: (first backup the existing copy of asy.conf to, say, asy.conf.