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+.\"	$OpenBSD: aria.4,v 1.1 2000/05/20 17:19:51 deraadt Exp $
+.\"	aria.4
+.\" Copyright (c) 1996 Roland C. Dowdeswell
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 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
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Roland C. Dowdeswell.
+.\" 4. The name of the authors may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+.\" DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\"
+.Dd January 21, 1996
+.Dt ARIA 4 i386
+.Os
+.Sh NAME
+.Nm aria
+.Nd
+Aria 16 device driver
+.Sh SYNOPSIS
+.Cd "aria0 at isa? port 0xPPP irq X drq Y flags Z"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for sound cards based on Sierra Semiconductor's
+Aria chipset.  Cards based on this chipset are capable of recording and
+playing 8- or 16-bit samples in mono or stereo up to 44.1KHz.  Some chipsets
+only play linear or ADCPM, but others will also play Mu-law and A-law
+sounds.  Three different mixer configurations are available.
+.Pp
+The I/O Port Base is selected from 0x280, 0x290, 0x2a0 and 0x2b0. The
+selection method depends on the board. The Aria takes 8 ports.
+.Pp
+The IRQ is selected from 10, 11, or 12.
+.Pp
+The DRQ line is chosen from 5 or 6, this driver will work with or without
+a DRQ.  If no DRQ is given, then the
+.Nm aria
+driver will simply use Direct I/O.
+.Pp
+The flags currently supported are 0x1, for the Prometheus Aria 16/Aria 16se.
+This flag tells the driver to initialise the card.  It is a weird undocumented
+piece of horribleness, but the card will not respond until you twiddle with
+the joystick port...
+.Sh BUGS
+The driver has only been tested on a Prometheus Aria 16.
+.Pp
+No DMA support, yet, so don't bother setting a DRQ.
+.Pp
+The full-duplex features are horribly inconsistent (i.e., unusable).
+.Pp
+The card sometimes drops out, and needs to be reset.  This can be
+accomplished by opening and closing
+.Pa /dev/audio ,
+e.g.,
+.Dq echo -n >/dev/audio
+.Pp
+The joystick and MIDI port interfaces are not supported.
+.Sh SEE ALSO
+.Xr audio 4
+.Sh AUTHOR
+Roland C. Dowdeswell <roland@imrryr.org>