$OpenBSD: spif.4,v 1.12 2003/11/09 16:06:07 jmc Exp $
Copyright (c) 1999 Jason L. Wright (jason@thought.net)
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.Dd February 4, 1999 .Dt SPIF 4 .Os .Sh NAME .Nm spif .Nd SBus (spiffy) Serial/Parallel Interface .Sh SYNOPSIS .Cd "spif* at sbus? slot ? offset ? " Pq "sun4c/sun4m/sun4u" .Cd "stty* at spif? " Pq "sun4c/sun4m/sun4u" .Cd "sbpp* at spif? " Pq "sun4c/sun4m/sun4u" .Sh DESCRIPTION The .Nm spif driver provides support for the Sun Serial/Parallel Interface card (Sun part number 501-1931), which is based on the Cirrus Logic CD180 octal serial controller and the Cirrus Logic PPC2 parallel port controller.
p The device minor numbers for this driver are encoded as follows: d -literal +---+---+---+---+---+---+---+---+ | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | +---+---+---+---+---+---+---+---+ | | | | | | | | | | | | | +---+---+---> port number | | | | | | | | | +---------------> unused | | | | | | | +-------------------> dial-out (on tty ports) | | | | | +-----------------------> unused | | +---+---------------------------> card number .Ed
p Up to four cards are supported in the system.
p 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 l -tag -width /dev/ttyS[0123][0-7] -compact t /dev/ttyS[0123][0-7] Serial ports t /dev/bppS[0-3] Parallel ports .El .Sh DIAGNOSTICS l -diag t "spif%d: ccr timeout" A timeout occurred while writing to one of the CD180 registers. t "stty%d-%d: 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 adapter was first supported in .Ox 2.5 . The driver was ported to .Nx 3.0 . .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 . .Sh TODO The parallel port is not supported yet.
p Dial-out (cua) devices are not yet supported.