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Undocumented flags which went away a few minutes ago.

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Undocumented auto FIFO trigger level adjustment which went away years ago.
This commit is contained in:
Bruce Evans 1998-05-31 11:16:09 +00:00
parent cd55b8f46c
commit 78453399ec
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=36493
2 changed files with 6 additions and 20 deletions
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13
share/man/man4/man4.i386/sio.4
View File

@ -34,7 +34,7 @@
.\"
.\" from: @(#)dca.4 5.2 (Berkeley) 3/27/91
.\" from: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp
.\" $Id: sio.4,v 1.24 1997/05/18 21:24:04 phk Exp $
.\" $Id: sio.4,v 1.25 1997/09/14 18:55:41 joerg Exp $
.\"
.Dd October 10, 1995
.Dt SIO 4 i386
@ -84,12 +84,8 @@ device is potential system console
device is forced to become system console
.It 0x00040
device is reserved for low-level IO (e. g. for remote kernel debugging)
.It 0x00080
enable diagnostics in probe
.It 0x0 Ns Em ?? Ns 00
minor number of master port
.It 0x10000
disable test#3 which often fails for internal modems
.It 0x20000
device is assumed to use a 16650A-type (extended FIFO) chip
.El
@ -147,12 +143,9 @@ The
keyword may be used on each
.Em device sio
line in the kernel configuration file
to silence the probe
or to disable the FIFO on 16550A UARTs
to disable the FIFO on 16550A UARTs
(see the synopsis).
Disabling the FIFO should rarely be necessary
since the driver automatically adjusts the receiver
FIFO trigger level for low latency and high efficiency.
Disabling the FIFO should rarely be necessary.
.Pp
The
.Em flags

13
share/man/man4/sio.4
View File

@ -34,7 +34,7 @@
.\"
.\" from: @(#)dca.4 5.2 (Berkeley) 3/27/91
.\" from: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp
.\" $Id: sio.4,v 1.24 1997/05/18 21:24:04 phk Exp $
.\" $Id: sio.4,v 1.25 1997/09/14 18:55:41 joerg Exp $
.\"
.Dd October 10, 1995
.Dt SIO 4 i386
@ -84,12 +84,8 @@ device is potential system console
device is forced to become system console
.It 0x00040
device is reserved for low-level IO (e. g. for remote kernel debugging)
.It 0x00080
enable diagnostics in probe
.It 0x0 Ns Em ?? Ns 00
minor number of master port
.It 0x10000
disable test#3 which often fails for internal modems
.It 0x20000
device is assumed to use a 16650A-type (extended FIFO) chip
.El
@ -147,12 +143,9 @@ The
keyword may be used on each
.Em device sio
line in the kernel configuration file
to silence the probe
or to disable the FIFO on 16550A UARTs
to disable the FIFO on 16550A UARTs
(see the synopsis).
Disabling the FIFO should rarely be necessary
since the driver automatically adjusts the receiver
FIFO trigger level for low latency and high efficiency.
Disabling the FIFO should rarely be necessary.
.Pp
The
.Em flags