dca man page on 4.4BSD

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DCA(4)		      BSD/hp300 Kernel Interfaces Manual		DCA(4)

     dca — HP 98644A communications interface

     device dca0 at scode9 flags 0x1

     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 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


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


     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.

BSD				 June 9, 1993				   BSD

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