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Re: duplex sound driver?

daemon@ATHENA.MIT.EDU (Nathan J. Williams)
Sun Apr 12 21:42:03 1998

To: David C Zhang <davidz@MIT.EDU>
Cc: netbsd-help@MIT.EDU
From: "Nathan J. Williams" <nathanw@MIT.EDU>
In-Reply-To: Your message of "Sat, 11 Apr 1998 02:44:27 EDT."
             <199804110644.CAA00430@ashland.mit.edu> 
Date: Sun, 12 Apr 1998 21:41:52 EDT

> 
> Does the kernel used in the current netBSD/Athena have full-duplex 
> sound driver?

	The kernel used in the current released version (NetBSD-Athena
7.7.2, based on NetBSD 1.2) does not. The kernel used in the version
of NetBSD-Athena that is now in testing (NetBSD-Athena 8.0, based on
NetBSD 1.3.1) does support full-duplex sound operation. From the
audio(4) man page on a 1.3.1 system:

DESCRIPTION
     The audio driver provides support for various audio peripherals.  It pro-
     vides a uniform programming interface layer above different underlying
     audio hardware drivers.  The audio layer provides full-duplex operation
     if the underlying hardware configuration supports it.

The man page goes on to describe how to use the audio interface,
including a way to tell if the curent device is full-duplex.

	- Nathan





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