- Remove yet another mention of minor number construction

  which is not applicable today.

- Provide an example of how to lock a speed.

1 files changed, 6 insertions, 5 deletions

diff --git a/share/man/man4/sio.4 b/share/man/man4/sio.4
index b85936f..07e076d 100644
--- a/share/man/man4/sio.4
+++ b/share/man/man4/sio.4
@@ -36,7 +36,7 @@
 .\"	from: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp
 .\" $FreeBSD$
 .\"
-.Dd October 17, 2004
+.Dd August 30, 2006
 .Dt SIO 4
 .Os
 .Sh NAME
@@ -292,10 +292,6 @@ The
 .Nm
 driver also supports an initial-state and a lock-state control
 device for each of the callin and the callout "data" devices.
-The minor number of the initial-state device is 32 higher
-than that of the corresponding data device.
-The minor number of the lock-state device is 64 higher
-than that of the corresponding data device.
 The termios settings of a data device are copied
 from those of the corresponding initial-state device
 on first opens and are not inherited from previous opens.
@@ -312,6 +308,11 @@ on the lock-state device.
 Speeds and special characters
 may be locked by setting the corresponding value in the lock-state
 device to any nonzero value.
+E.g., to lock a speed to 115200, use
+.Dq Li stty 115200
+on the initial-state device and
+.Dq Li stty 1
+on the lock-state device.
 .Pp
 Correct programs talking to correctly wired external devices
 work with almost arbitrary initial states and almost no locking,