1.\" $OpenBSD: maestro.4,v 1.4 2001/06/22 12:15:46 mpech Exp $ 2.\" 3.\" Copyright (c) 2001 Marc Espie. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.Dd January 13, 2001 27.Dt MAESTRO 4 28.Os 29.Sh NAME 30.Nm maestro 31.Nd ESS Maestro 1 and 2 sound hardware driver 32.Sh SYNOPSIS 33.Cd "maestro* at pci? dev ? function ?" 34.Cd "audio* at maestro?" 35.Sh DESCRIPTION 36The 37.Nm 38driver supports ESS maestro 1, 2 and 2E, and a few derived products like 39NEC Versa, or NEC VersaProNX VA26D, as long as they use an AC'97 compliant 40codec, which is always the case, except for very early models. It 41does not support maestro 3 cards, which are entirely different. 42.Pp 43Maestro cards have direct support for 16 bit signed little-endian 44mono and stereo, 8 bit signed and unsigned mono and stereo. Other encodings 45are emulated in software. Sampling range is 4000 - 48000 Hz, with roughly 46a 2 Hz resolution. 47.Pp 48Maestro cards have some DSP and dolby digital 5:1 hardware, but this driver 49does not support it. 50.Pp 51Other functions of maestro cards (modem, joystick) are not supported. 52.Pp 53PCI interrupt sharing works, as long as other devices comply too. 54.Sh HISTORY 55Maestro hardware information was gleaned from the 56.Fx 57and Linux OSS drivers. 58.Sh AUTHORS 59David Leonard and Marc Espie. 60.Sh SEE ALSO 61.Xr ac97 4 , 62.Xr audio 4 , 63.Xr pci 4 64.Sh BUGS 65Recording should work soon. 66