79 lines
2.4 KiB
Groff
79 lines
2.4 KiB
Groff
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.\" $FreeBSD$
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.\" $OpenBSD: sab.4,v 1.6 2003/06/06 10:29:42 jmc Exp $
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.\"
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.\" Copyright (c) 2001 Jason L. Wright (jason@thought.net)
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd October 29, 2001
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.Dt SAB 4 sparc64
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.Os
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.Sh NAME
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.Nm sab
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.Nd Infineon SAB82532 (ESCC2) serial communications driver
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.Sh SYNOPSIS
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.Cd "device sab"
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.Sh DESCRIPTION
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The
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.Nm
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is a
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.Tn Infineon
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(formerly
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.Tn Siemens )
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SAB82532 (ESCC2) serial interface chip used in PCI-based UltraSPARC
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.Tn Sun
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workstations.
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The ESCC2 provides two independent input/output channels per instance.
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These chips are normally used to provide RS-423 and RS232 serial ports
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for general purpose use.
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.Pp
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The
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.Nm
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driver supports all of the standard
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.Xr tty 4
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ioctl calls.
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The status of the DTR, RTS, CTS, and DCD signals can be queried with
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TIOCMGET command, but, due to limitations in the hardware,
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only the DTR and RTS signals can be modified with TIOCMSET, TIOCMBIC,
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and TIOCMBIS
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.Xr ioctl 2
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commands.
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.Sh FILES
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.Bl -tag -width /dev/ttyh[0-1] -compact
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.It /dev/tty[a-b]
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Serial ports
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.El
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.Sh SEE ALSO
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.Xr ioctl 2 ,
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.Xr intro 4 ,
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.Xr tty 4
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 5.1 .
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.Sh BUGS
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The
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.Nm
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does not support cua minor devices.
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