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29 .Nd nullmodem terminal driver
42 If either of the two tty devices have the
45 .Pq Dq Li "stty dsrflow"
46 set in their line discipline, the
48 device will emulate the speed configured in the
51 The speed emulation works independently in the two directions,
52 controlled by the slower end's termios settings
53 .Va ( c_ispeed , c_ospeed ,
54 .Dv CS5 ... CS8 , CSTOPB
58 .Bl -tag -width ".Pa /dev/nmdm Ns Ar N Ns Op Pa AB" -compact
59 .It Pa /dev/nmdm Ns Ar N Ns Op Pa AB
60 nullmodem device nodes.
71 .Dq "on-demand device creation"
72 so simply accessing a given instance in
84 driver first appeared in