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-.\" $OpenBSD: spif.4,v 1.18 2013/07/16 16:05:49 schwarze Exp $
-.\"
-.\" Copyright (c) 1999 Jason L. Wright (jason@thought.net)
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
-.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-.\" POSSIBILITY OF SUCH DAMAGE.
-.\"
-.Dd $Mdocdate: July 16 2013 $
-.Dt SPIF 4 sparc
-.Os
-.Sh NAME
-.Nm spif
-.Nd SBus (spiffy) Serial/Parallel Interface
-.Sh SYNOPSIS
-.Cd "spif* at sbus? " Pq "sun4c/sun4e/sun4m"
-.Cd "stty* at spif? " Pq "sun4c/sun4e/sun4m"
-.Cd "sbpp* at spif? " Pq "sun4c/sun4e/sun4m"
-.Sh DESCRIPTION
-The
-.Nm spif
-driver provides support for the Sun Serial/Parallel Interface card
-(Sun part number 501-1931)
-based around the
-Cirrus Logic CD180 octal serial controller
-and the
-Cirrus Logic PPC2 parallel port controller.
-.Pp
-The device minor numbers for this driver are encoded as follows:
-.Bd -literal
- +---+---+---+---+---+---+---+---+
- | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
- +---+---+---+---+---+---+---+---+
- | | | | | | | |
- | | | | | +---+---+---> port number
- | | | | |
- | | | | +---------------> unused
- | | | |
- | | | +-------------------> dial-out (on tty ports)
- | | |
- | | +-----------------------> unused
- | |
- +---+---------------------------> card number
-.Ed
-.Pp
-Up to four cards are supported in the system.
-.Pp
-Each of the serial ports has an 8 byte FIFO for receive and transmit as
-well as automatic hardware (RTS/CTS) flow control.
-.Sh FILES
-.Bl -tag -width /dev/tty[jkl][0-7] -compact
-.It /dev/tty[jkl][0-7]
-Serial ports
-.It /dev/sbpp[0-3]
-Parallel ports
-.El
-.Sh DIAGNOSTICS
-.Bl -diag
-.It "spif0: ccr timeout"
-A timeout occurred while writing to one of the CD180 registers.
-.It "stty0-N: ring overflow"
-Incoming characters were discarded because the application
-in control of the device did not read the input fast enough.
-.El
-.Sh SEE ALSO
-.Xr intro 4 ,
-.Xr sbus 4 ,
-.Xr tty 4
-.Sh HISTORY
-The
-.Nm spif
-driver was first supported in
-.Ox 2.5 .
-.Sh AUTHORS
-.An -nosplit
-The driver was written by
-.An Jason Wright Aq Mt jason@thought.net ,
-and is heavily based on the
-.Xr magma 4
-driver written by
-.An Iain Hibbert Aq Mt plunky@skate.demon.co.uk .
-.Sh TODO
-The parallel port is not supported yet.
-.Pp
-Dial-out (cua) devices are not yet supported.