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To: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
cc: rhh@ct.picker.com (Randall Hopper), louie@TransSys.COM,
        multimedia@FreeBSD.ORG
Subject: Re: sb16 request 
In-reply-to: Your message of "Thu, 24 Jul 1997 15:43:15 +0200."
             <199707241343.PAA26156@labinfo.iet.unipi.it> 
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Date: Thu, 24 Jul 1997 09:23:33 -0700
From: Amancio Hasty <hasty@rah.star-gate.com>
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>From The Desk Of Luigi Rizzo :
> Hi,
> 
> I am looking at the sb16 operation in full duplex using dual dma (one
> 8-bit, the other 16-bit):
> 
> Which one fo the following approaches people prefers:
> 
> 1. always use 16-bit for play, 8-bit for record;
> 2. always use 16-bit for record, 8-bit for play;
> 3. allocate the 16-bit channel to the first type of request (read or
>    write) and use the 8-bit channel for the other one.
> 
> or
> 
> 4. define a new ioctl to chose which channel gets the 16-bit dma and
>    which one gets the 8-bit dma, with some default camong those
>    described before.

I prefer an ioctl to chose which channel is for 16 bit . If I had to 
hardwired the choice , I would chose , 16 bit for recording and 8 bit
for playback.

	Amancio