1.\" $OpenBSD: maestro.4,v 1.15 2007/05/31 19:19:50 jmc 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 $Mdocdate: May 31 2007 $ 27.Dt MAESTRO 4 28.Os 29.Sh NAME 30.Nm maestro 31.Nd ESS Maestro 1 and 2 audio device 32.Sh SYNOPSIS 33.Cd "maestro* at pci?" 34.Cd "audio* at maestro?" 35.Sh DESCRIPTION 36The 37.Nm 38driver supports ESS maestro 1, 2 and 2E, including OEM products that 39identify as NEC Versa, or NEC VersaProNX VA26D, as long as they use 40an AC'97 compliant codec, which is always the case, except for very 41early models. 42It does not support maestro 3 cards, which are entirely different and 43supported by the 44.Xr esa 4 45driver. 46.Pp 47Maestro cards have direct support for 16 bit signed little-endian 48mono and stereo, 8 bit signed and unsigned mono and stereo. 49Other encodings are emulated in software. 50Sampling range is 4000 - 48000 Hz, with roughly a 2 Hz resolution. 51.Pp 52Maestro cards have some DSP and Dolby Digital 5.1 hardware, but this driver 53does not support it. 54.Pp 55Other functions of maestro cards (modem, joystick) are not supported. 56.Pp 57PCI interrupt sharing works, as long as other devices comply too. 58.Sh SEE ALSO 59.Xr ac97 4 , 60.Xr audio 4 , 61.Xr esa 4 , 62.Xr intro 4 , 63.Xr pci 4 64.Sh HISTORY 65Maestro hardware information was gleaned from the 66.Fx 67and Linux OSS drivers. 68.Sh AUTHORS 69David Leonard and Marc Espie. 70.Sh BUGS 71Very old cards with a PT101 mixer component should have partial support, e.g., 72the mixer does not work. 73.Pp 74Recording should work soon. 75