BOCA(4)                 NetBSD Kernel Interfaces Manual                BOCA(4)

NAME
     boca -- multiplexing serial communications interface

SYNOPSIS
     For 4-port BB1004 boards:

     boca0 at isa? port 0x100 irq 5
     com2 at boca? slave ?
     com3 at boca? slave ?
     com4 at boca? slave ?
     com5 at boca? slave ?

     For 8-port BB1008 boards:

     boca0 at isa? port 0x100 irq 5
     com2 at boca? slave ?
     com3 at boca? slave ?
     com4 at boca? slave ?
     com5 at boca? slave ?
     com6 at boca? slave ?
     com7 at boca? slave ?
     com8 at boca? slave ?
     com9 at boca? slave ?

     For 16-port BB2016 boards:

     boca0 at isa? port 0x100 irq 5
     com2 at boca? slave ?
     com3 at boca? slave ?
     com4 at boca? slave ?
     com5 at boca? slave ?
     com6 at boca? slave ?
     com7 at boca? slave ?
     com8 at boca? slave ?
     com9 at boca? slave ?
     boca1 at isa? port 0x140 irq 5
     com10 at boca? slave ?
     com11 at boca? slave ?
     com12 at boca? slave ?
     com13 at boca? slave ?
     com14 at boca? slave ?
     com15 at boca? slave ?
     com16 at boca? slave ?
     com17 at boca? slave ?

     (The BB2016 is functionally equivalent to two BB1008 boards, and is con-
     figured as such.)

DESCRIPTION
     The boca driver provides support for BOCA Research BB1004, BB1008 and
     BB2016 boards that multiplex together up to four, eight or sixteen EIA
     RS-232C (CCITT V.28) communications interfaces.

     Each boca device is the master device for up to eight com devices.  The
     kernel configuration specifies these com devices as slave devices of the
     boca device, as shown in the synopsis.  The slave ID given for each com
     device determines which bit in the interrupt multiplexing register is
     tested to find interrupts for that device.  The port specification for
     the boca device is used to compute the base addresses for the com subde-
     vices and the port for the interrupt multiplexing register.

FILES
     /dev/tty??

SEE ALSO
     com(4)

HISTORY
     The boca driver was written by Charles Hannum, based on the ast driver
     and source code from David Muir Sharnoff.  David wishes to acknowledge
     the assistance of Jason Venner in determining how to use the BOCA boards.

NetBSD 5.0_STABLE               January 3, 1995              NetBSD 5.0_STABLE
