xref: /csrg-svn/share/man/man4/man4.hp300/dca.4 (revision 62970)
1*62970Sbostic.\" Copyright (c) 1990, 1991, 1993
2*62970Sbostic.\"	The Regents of the University of California.  All rights reserved.
344672Sbostic.\"
444672Sbostic.\" This code is derived from software contributed to Berkeley by
544672Sbostic.\" the Systems Programming Group of the University of Utah Computer
644672Sbostic.\" Science Department.
762969Sbostic.\"
844672Sbostic.\" %sccs.include.redist.man%
944672Sbostic.\"
10*62970Sbostic.\"     @(#)dca.4	8.1 (Berkeley) 06/09/93
1144672Sbostic.\"
1247672Scael.Dd
1347672Scael.Dt DCA 4 hp300
1447672Scael.Os
1547672Scael.Sh NAME
1647672Scael.Nm dca
1747672Scael.Nd
1847672Scael.Tn HP 98644A
1947672Scaelcommunications interface
2047672Scael.Sh SYNOPSIS
2147672Scael.Cd "device dca0 at scode9 flags 0x1"
2247672Scael.Sh DESCRIPTION
2347672ScaelThe
2447672Scael.Tn 98644A
2547672Scaelis a single port
2647672Scael.Tn EIA
2747672Scael.Tn RS-232C
2847672Scael.Pf ( Tn CCITT
2947672Scael.Tn V.28 )
3044672Sbosticcommunications interface with a single character buffer.
3144672SbosticSuch an interface is built-in to all series 300 machines.
3247672Scael.Pp
3344672SbosticInput and output for each line may set to one of following baud rates;
3447672Scael50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600 or
3547672Scael19200.
3647672Scael.Pp
3747672ScaelAn optional argument
3847672Scael.Ar flags
3947672Scaelmay be set to 1 if the line should be treated as hard-wired
4044672Sbosticwith carrier always present or 0 if modem control is desired.
4147672Scael.Sh FILES
4247672Scael.Bl -tag -width Pa
4347672Scael.It Pa /dev/tty0
4447672Scael.El
4547672Scael.Sh DIAGNOSTICS
4647672Scael.Bl -diag
4747672Scael.It dca%d: silo overflow.
4847672ScaelThe single-character input
4947672Scael.Dq silo
5044672Sbostichas overflowed and incoming data has been lost.
5147672Scael.El
5247672Scael.Sh SEE ALSO
5347672Scael.Xr tty 4
5447672Scael.Sh BUGS
5544672SbosticData loss is possible on busy systems with baud rates greater than 300.
5644672SbosticThe
5747672Scael.Nm dca
5844672Sbostichas never been tested with modem control enabled or on anything but the
5944672Sbosticbuilt-in interface.
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