dca(4) - NetBSD Manual Pages

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DCA(4)                 NetBSD/hp300  Programmer's Manual                DCA(4)


NAME

     dca - HP98644A serial communications interface


SYNOPSIS

     dca0 at dio? scode 9 flags 0x1
     dca* at dio? scode ?


DESCRIPTION

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

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

     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 de-
     sired.


FILES

     /dev/tty0


DIAGNOSTICS

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


SEE ALSO

     dio(4), tty(4)


BUGS

     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.

NetBSD 1.6                       June 9, 1993                                1