[unix-history] / usr / src / share / man / man4 / man4.hp300 / dca.4

.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the Systems Programming Group of the University of Utah Computer
.\" Science Department.
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\"     @(#)dca.4	5.2 (Berkeley) 3/27/91
.\"
.Dd March 27, 1991
.Dt DCA 4 hp300
.Os
.Sh NAME
.Nm dca
.Nd
.Tn HP 98644A
communications interface
.Sh SYNOPSIS
.Cd "device dca0 at scode9 flags 0x1"
.Sh DESCRIPTION
The
.Tn 98644A
is a single port
.Tn EIA
.Tn RS-232C
.Pf ( Tn CCITT
.Tn V.28 )
communications interface with a single character buffer.
Such an interface is built-in to all series 300 machines.
.Pp
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.
.Pp
An optional argument
.Ar 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.
.Sh FILES
.Bl -tag -width Pa
.It Pa /dev/tty0
.El
.Sh DIAGNOSTICS
.Bl -diag
.It dca%d: silo overflow.
The single-character input
.Dq silo
has overflowed and incoming data has been lost.
.El
.Sh SEE ALSO
.Xr tty 4
.Sh HISTORY
The
.Nm
driver
.Ud
.Sh BUGS
Data loss is possible on busy systems with baud rates greater than 300.
The
.Nm dca
has never been tested with modem control enabled or on anything but the
built-in interface.
Commit	Line	Data
9903e566	1	.\" Copyright (c) 1990, 1991 The Regents of the University of California.
f4a65166 KB	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.
c0567266 KB	7	.\" Redistribution and use in source and binary forms, with or without
	8	.\" modification, are permitted provided that the following conditions
	9	.\" are met:
	10	.\" 1. Redistributions of source code must retain the above copyright
	11	.\" notice, this list of conditions and the following disclaimer.
	12	.\" 2. Redistributions in binary form must reproduce the above copyright
	13	.\" notice, this list of conditions and the following disclaimer in the
	14	.\" documentation and/or other materials provided with the distribution.
	15	.\" 3. All advertising materials mentioning features or use of this software
	16	.\" must display the following acknowledgement:
	17	.\" This product includes software developed by the University of
	18	.\" California, Berkeley and its contributors.
	19	.\" 4. Neither the name of the University nor the names of its contributors
	20	.\" may be used to endorse or promote products derived from this software
	21	.\" without specific prior written permission.
	22	.\"
	23	.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	24	.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	25	.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	26	.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	27	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	28	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	29	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	30	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	31	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	32	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	33	.\" SUCH DAMAGE.
f4a65166	34	.\"
af359dea	35	.\" @(#)dca.4 5.2 (Berkeley) 3/27/91
f4a65166	36	.\"
af359dea	37	.Dd March 27, 1991
9903e566 CL	38	.Dt DCA 4 hp300
	39	.Os
	40	.Sh NAME
	41	.Nm dca
	42	.Nd
	43	.Tn HP 98644A
	44	communications interface
	45	.Sh SYNOPSIS
	46	.Cd "device dca0 at scode9 flags 0x1"
	47	.Sh DESCRIPTION
	48	The
	49	.Tn 98644A
	50	is a single port
	51	.Tn EIA
	52	.Tn RS-232C
	53	.Pf ( Tn CCITT
	54	.Tn V.28 )
f4a65166 KB	55	communications interface with a single character buffer.
f4a65166 KB	56	Such an interface is built-in to all series 300 machines.
9903e566	57	.Pp
f4a65166	58	Input and output for each line may set to one of following baud rates;
9903e566 CL	59	50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600 or
	60	19200.
	61	.Pp
	62	An optional argument
	63	.Ar flags
	64	may be set to 1 if the line should be treated as hard-wired
f4a65166	65	with carrier always present or 0 if modem control is desired.
9903e566 CL	66	.Sh FILES
	67	.Bl -tag -width Pa
	68	.It Pa /dev/tty0
	69	.El
	70	.Sh DIAGNOSTICS
	71	.Bl -diag
	72	.It dca%d: silo overflow.
	73	The single-character input
	74	.Dq silo
f4a65166	75	has overflowed and incoming data has been lost.
9903e566 CL	76	.El
	77	.Sh SEE ALSO
	78	.Xr tty 4
	79	.Sh HISTORY
	80	The
	81	.Nm
	82	driver
	83	.Ud
	84	.Sh BUGS
f4a65166 KB	85	Data loss is possible on busy systems with baud rates greater than 300.
f4a65166 KB	86	The
9903e566	87	.Nm dca
f4a65166 KB	88	has never been tested with modem control enabled or on anything but the
f4a65166 KB	89	built-in interface.