NAME    [Toc]    [Back]

     spif - SBus (spiffy) Serial/Parallel Interface

SYNOPSIS    [Toc]    [Back]

     spif* at sbus? slot ? offset ?
     stty* at spif?
     sbpp* at spif?

DESCRIPTION    [Toc]    [Back]

     The 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.

     The device minor numbers for this driver are encoded as follows:

         +---+---+---+---+---+---+---+---+
         | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
         +---+---+---+---+---+---+---+---+
           |   |   |   |   |   |   |   |
           |   |   |   |   |   +---+---+---> port number
           |   |   |   |   |
           |   |   |   |   +---------------> unused
           |   |   |   |
           |   |   |    +------------------->  dial-out  (on  tty
ports)
           |   |   |
           |   |   +-----------------------> unused
           |   |
           +---+---------------------------> card number

     Up to four cards are supported in the system.

     Each  of the serial ports has an 8 byte FIFO for receive and
transmit as
     well as automatic hardware (RTS/CTS) flow control.

FILES    [Toc]    [Back]

     /dev/tty[jkl][0-7]  Serial ports
     /dev/sbpp[0-3]      Parallel ports

DIAGNOSTICS    [Toc]    [Back]

     spif%d: ccr timeout  A timeout occurred while writing to one
of the CD180
     registers.

     stty%d-%d: ring overflow  Incoming characters were discarded
because the
     application in control of the device did not read the  input
fast enough.

SEE ALSO    [Toc]    [Back]

     intro(4), sbus(4), tty(4)

HISTORY    [Toc]    [Back]

     The spif driver was first supported in OpenBSD 3.1.

AUTHORS    [Toc]    [Back]

     The  driver was written by Jason Wright <jason@thought.net>,
and is heavily
 based on the magma(4) driver written by
     Iain Hibbert <plunky@skate.demon.co.uk>.

TODO    [Toc]    [Back]

     The parallel port is not supported yet.

     Dial-out (cua) devices are not yet supported.

OpenBSD     3.6                        January      12,      2002