1.\" $OpenBSD: opl.4,v 1.7 2004/03/21 19:50:44 miod Exp $ 2.\" $NetBSD: opl.4,v 1.3 1998/09/08 11:59:48 augustss Exp $ 3.\" 4.\" Copyright (c) 1997 The NetBSD Foundation, Inc. 5.\" All rights reserved. 6.\" 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 NetBSD 18.\" Foundation, Inc. and its contributors. 19.\" 4. Neither the name of The NetBSD Foundation nor the names of its 20.\" contributors may be used to endorse or promote products derived 21.\" from this software without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33.\" POSSIBILITY OF SUCH DAMAGE. 34.\" 35.Dd August 18, 1998 36.Dt OPL 4 37.Os 38.Sh NAME 39.Nm opl 40.Nd Yamaha OPL2 and OPL3 FM synthesizer driver 41.Sh SYNOPSIS 42.Cd "opl* at eso?" 43.Cd "opl* at ess?" 44.Cd "opl0 at isa? port 0x388" 45.Cd "opl* at sb?" 46.Cd "opl* at yds?" 47.Cd "midi* at opl?" 48.Sh DESCRIPTION 49The 50.Nm 51driver provides support for the Yamaha OPL2 (YM3812) and OPL3 52(YMF262) chips. 53The chips are FM synthesizer and are capable 54of producing a wide range of (mostly awful) sounds. 55.Pp 56Access to the device is done through the MIDI driver. 57.Pp 58The 59.Nm 60driver usually attaches to a sound card, but it can also sit 61directly on the ISA bus. 62.Sh SEE ALSO 63.Xr eso 4 , 64.Xr ess 4 , 65.Xr isa 4 , 66.Xr midi 4 , 67.Xr sb 4 , 68.Xr yds 4 69.Sh HISTORY 70The 71.Nm 72device driver first appeared in 73.Nx 1.4 . 74