NAME    [Toc]    [Back]

     dca - HP 98644A serial communications interface

SYNOPSIS    [Toc]    [Back]

     dca0 at dio? scode 9 flags 1 (on-board serial interfaces)
     dca* at dio? scode ?

DESCRIPTION    [Toc]    [Back]

     The 98644A is a single port EIA RS-232C (CCITT V.28)  communications interface
  with  a single character buffer.  Such an interface
is built-in to
     all series 300 machines.

     Input and output for each line may be set to one of the following baud
     rates:  50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400,
4800, 9600,
     19200, 38400.

     An optional argument flags may be  set  to  1  if  the  line
should be treated
     as hard-wired with carrier always present or 0 if modem control is desired.

FILES    [Toc]    [Back]

     /dev/tty[0-3]
     /dev/cua[0-3]

DIAGNOSTICS    [Toc]    [Back]

     dca%d: silo overflow.  The single-character  input  ``silo''
has overflowed
     and incoming data has been lost.

SEE ALSO    [Toc]    [Back]

     apci(4), dcm(4), dio(4), intro(4), tty(4)

BUGS    [Toc]    [Back]

     Data  loss  is  possible  on  busy  systems  with baud rates
greater than 300.
     The dca has never been tested with modem control enabled  or
on anything
     but the built-in interface.

OpenBSD      3.6                           June      9,      1993