.\"	$OpenBSD: eso.4,v 1.7 2006/08/31 12:33:42 jmc Exp $
.\"	$NetBSD: eso.4,v 1.2 1999/08/02 17:43:52 augustss Exp $
.\"
.\" Copyright (c) 1999 Klaus J. Klein
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
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.\" 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
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.\" 3. The name of the author may not be used to endorse or promote products
.\"    derived from this software without specific prior written permission.
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.Dd August 5, 1999
.Dt ESO 4
.Os
.Sh NAME
.Nm eso
.Nd ESS Technology Solo-1 PCI AudioDrive audio device
.Sh SYNOPSIS
.Cd "eso*   at pci?"
.Cd "audio* at eso?"
.\" .Cd "mpu*   at eso?"
.Cd "opl*   at eso?"
.Sh DESCRIPTION
The
.Nm
device driver supports sound cards based on ESS Technology Solo-1
PCI AudioDrive chips (ES1938 and ES1946),
e.g. the TerraTec 128i PCI card.
.Sh DIAGNOSTICS
.Bl -diag
.It "eso0: can't map Audio 1 DMA into I/O space"
PCI autoconfiguration did not map the first audio channel DMA controller into
I/O space at a suitable address, and the driver was not able map it by itself.
In that case only playback functionality will be available.
.It "eso0: reset timeout"
The device failed to acknowledge being reset.
.It "eso0: RDR timeout"
The driver timed out reading data from a controller register.
.It "eso0: WDR timeout"
The driver timed out waiting to send a command or writing to a controller
register.
.El
.Sh SEE ALSO
.Xr audio 4 ,
.Xr intro 4 ,
.\" .Xr mpu 4 ,
.Xr opl 4 ,
.Xr pci 4
.Sh HISTORY
The
.Nm
device driver appeared in
.Ox 2.5 .
.Sh BUGS
The game port and MIDI port are not supported.