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1.1 ! root 1: .\" Copyright (c) 1990 The Regents of the University of California. ! 2: .\" All rights reserved. ! 3: .\" ! 4: .\" This code is derived from software contributed to Berkeley by ! 5: .\" the Systems Programming Group of the University of Utah Computer ! 6: .\" Science Department. ! 7: .\" ! 8: .\" Redistribution and use in source and binary forms are permitted provided ! 9: .\" that: (1) source distributions retain this entire copyright notice and ! 10: .\" comment, and (2) distributions including binaries display the following ! 11: .\" acknowledgement: ``This product includes software developed by the ! 12: .\" University of California, Berkeley and its contributors'' in the ! 13: .\" documentation or other materials provided with the distribution and in ! 14: .\" all advertising materials mentioning features or use of this software. ! 15: .\" Neither the name of the University nor the names of its contributors may ! 16: .\" be used to endorse or promote products derived from this software without ! 17: .\" specific prior written permission. ! 18: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED ! 19: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF ! 20: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 21: .\" ! 22: .\" @(#)dca.4 5.1 (Berkeley) 6/29/90 ! 23: .\" ! 24: .TH DCA 4 "June 29, 1990" ! 25: .UC 7 ! 26: .SH NAME ! 27: dca \- HP 98644A communications interface ! 28: .SH SYNOPSIS ! 29: .B "device dca0 at scode9 flags 0x1" ! 30: .SH DESCRIPTION ! 31: The 98644A is a single port EIA RS-232C (CCITT V.28) ! 32: communications interface with a single character buffer. ! 33: Such an interface is built-in to all series 300 machines. ! 34: .PP ! 35: Each 98644A line behaves as described in ! 36: .IR tty (4). ! 37: Input and output for each line may set to one of following baud rates; ! 38: 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, ! 39: 9600, 19200. See ! 40: .IR tty (4) ! 41: for the encoding. ! 42: .PP ! 43: Flags should be set to 1 if the line should be treated as hard-wired ! 44: with carrier always present or 0 if modem control is desired. ! 45: .SH FILES ! 46: /dev/tty0 ! 47: .SH "SEE ALSO" ! 48: tty(4) ! 49: .SH DIAGNOSTICS ! 50: \fBdca%d: silo overflow\fR. The single-character input ``silo'' ! 51: has overflowed and incoming data has been lost. ! 52: .SH BUGS ! 53: Data loss is possible on busy systems with baud rates greater than 300. ! 54: The ! 55: .I dca ! 56: has never been tested with modem control enabled or on anything but the ! 57: built-in interface.
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