spif(4) - NetBSD Manual Pages

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SPIF(4)                 NetBSD Kernel Interfaces Manual                SPIF(4)


NAME

     spif -- SBus (spiffy) Serial/Parallel Interface


SYNOPSIS

     spif* at sbus? slot ? offset ?                 (sun4c/sun4m/sun4u)
     stty* at spif?                                 (sun4c/sun4m/sun4u)
     sbpp* at spif?                                 (sun4c/sun4m/sun4u)


DESCRIPTION

     The 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 con-
     troller.

     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

     /dev/ttyS[0123][0-7]  Serial ports
     /dev/bppS[0-3]        Parallel ports


DIAGNOSTICS

     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

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


HISTORY

     The spif adapter was first supported in OpenBSD 2.5.  The driver was
     ported to NetBSD 3.0.


AUTHORS

     The driver was written by Jason Wright <jason@thought.net>, and is heav-
     ily based on the magma(4) driver written by Iain Hibbert.


TODO

     The parallel port is not supported yet.

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

NetBSD 7.0                     February 4, 1999                     NetBSD 7.0