| Main index | Section 4 | Options |
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
umcs_load="YES"
The device is accessed through the ucom(4) driver which makes it behave like a tty(4).
Different ports on device are presented as sub-units, like /dev/ttyU0.1 and /dev/ttyU0.2.
| /dev/ttyU*.* | for callin ports |
| /dev/ttyU*.*.init
/dev/ttyU*.*.lock | |
|
corresponding callin initial-state and lock-state devices
| |
| /dev/cuaU*.* | for callout ports |
| /dev/cuaU*.*.init
/dev/cuaU*.*.lock | |
| corresponding callout initial-state and lock-state devices | |
| UMCS (4) | April 26, 2017 |
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| “ | "I liken starting one's computing career with Unix, say as an undergraduate, to being born in East Africa. It is intolerably hot, your body is covered with lice and flies, you are malnourished and you suffer from numerous curable diseases. But, as far as young East Africans can tell, this is simply the natural condition and they live within it. By the time they find out differently, it is too late. They already think that the writing of shell scripts is a natural act." | ” |
| — Ken Pier, Xerox PARC | ||