1.\" $NetBSD: tcom.4,v 1.5 2001/09/22 16:36:22 wiz Exp $ 2.\" 3.\" Copyright (c) 1998 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Eric S. Hvozda. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.\" 38.\" Copyright (c) 1990, 1991 The Regents of the University of California. 39.\" All rights reserved. 40.\" 41.\" This code is derived from software contributed to Berkeley by 42.\" the Systems Programming Group of the University of Utah Computer 43.\" Science Department. 44.\" Redistribution and use in source and binary forms, with or without 45.\" modification, are permitted provided that the following conditions 46.\" are met: 47.\" 1. Redistributions of source code must retain the above copyright 48.\" notice, this list of conditions and the following disclaimer. 49.\" 2. Redistributions in binary form must reproduce the above copyright 50.\" notice, this list of conditions and the following disclaimer in the 51.\" documentation and/or other materials provided with the distribution. 52.\" 3. All advertising materials mentioning features or use of this software 53.\" must display the following acknowledgement: 54.\" This product includes software developed by the University of 55.\" California, Berkeley and its contributors. 56.\" 4. Neither the name of the University nor the names of its contributors 57.\" may be used to endorse or promote products derived from this software 58.\" without specific prior written permission. 59.\" 60.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 61.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 62.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 63.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 64.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 65.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 66.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70.\" SUCH DAMAGE. 71.\" 72.\" from: @(#)dca.4 5.2 (Berkeley) 3/27/91 73.\" from: Id: com.4,v 1.1 1993/08/06 11:19:07 cgd Exp 74.\" 75.Dd May 20, 1998 76.Dt TCOM 4 77.Os 78.Sh NAME 79.Nm tcom 80.Nd 81multiplexing serial communications interface 82.Sh SYNOPSIS 83For 4-port TC-400 series boards: 84.Pp 85.Cd "tcom0 at isa? port 0x100 irq 5" 86.Cd "com2 at tcom? slave ?" 87.Cd "com3 at tcom? slave ?" 88.Cd "com4 at tcom? slave ?" 89.Cd "com5 at tcom? slave ?" 90.Pp 91For 8-port TC-800 series boards: 92.Pp 93.Cd "tcom0 at isa? port 0x100 irq 5" 94.Cd "com2 at tcom? slave ?" 95.Cd "com3 at tcom? slave ?" 96.Cd "com4 at tcom? slave ?" 97.Cd "com5 at tcom? slave ?" 98.Cd "com6 at tcom? slave ?" 99.Cd "com7 at tcom? slave ?" 100.Cd "com8 at tcom? slave ?" 101.Cd "com9 at tcom? slave ?" 102.Sh DESCRIPTION 103The 104.Nm tcom 105driver provides support for the Byte Runner Technologies TC-400 106and TC-800 series boards that multiplex together up to four or eight 107.Tn EIA 108.Tn RS-232C 109.Pf ( Tn CCITT 110.Tn V.28 ) 111communications interfaces. 112.Pp 113Each 114.Nm 115device is the master device for up to eight 116.Nm com 117devices. The kernel configuration specifies these 118.Nm com 119devices as slave devices of the 120.Nm 121device, as shown in the synopsis. The slave ID given for each 122.Nm com 123device determines which bit in the interrupt multiplexing register is 124tested to find interrupts for that device. 125The 126.Tn port 127specification for the 128.Nm 129device is used to compute the base addresses for the 130.Nm com 131subdevices and the port for the interrupt multiplexing register. 132.Pp 133Not all possible configuration options are currently supported (for 134example, speeds beyond 115200 baud are not currently supported). 135.Sh FILES 136.Bl -tag -width Pa 137.It Pa /dev/tty?? 138.El 139.Sh SEE ALSO 140.Xr com 4 141.Sh HISTORY 142The 143.Nm 144driver was written by Jukka Marin. 145