The following reply was made to PR kern/29245; it has been noted by GNATS.

From: Rhialto <rhialto@azenomei.knuffel.net>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
	netbsd-bugs@NetBSD.org
Subject: Re: kern/29245: Fix to make audio work on Alpha PWS
Date: Mon, 7 Feb 2005 02:25:25 +0100

 On Sat 05 Feb 2005 at 18:58:01 +0000, Charles M. Hannum wrote:
 >  This patch is definitely not correct in general.  It will break full-duplex 
 >  mode on chips that support it.
 
 As I can see the patch, it only changes behaviour for the ESS_1888
 model. And looking at it function pointer table (struct audio_hw_if
 ess_1888_hw_if), it had a weird mix of "audio1" and "audio2" stuff in
 the first place. So, without knowing specifics about the hardware, the
 patch made sense to me.
 
 >  Is the problem here that the ESS chip is only getting assigned one
 >  DRQ or one IRQ?
 
 That looks to be the case, judging by the boot messages:
 
 ess0 at isa0 port 0x220-0x22f irq 5 drq 1
 ess0: ESS Technology ES1888 [version 0x688b]
 ess0: audio1 interrupting at irq 5
 audio0 at ess0: half duplex, mmap, independent
 opl0 at ess0: model OPL3
 midi0 at opl0: ESS Yamaha OPL3
 
 I also have this in my config file. I suppose I also copied from my
 original source.
 
 #ess*	at	isa? port 0x220 irq 5 drq 1 drq2 5   # ESS 18XX
 ess*	at	isa? port 0x220 irq 5 drq 1 # ESS 18XX
 
 What you are saying is perhaps that I should try the commented out
 version with the original sources? I just did, and now I get these boot
 messages:
 
 ess0 at isa0 port 0x220-0x22f irq 5 drq 1,5
 ess0: ESS Technology ES1888 [version 0x688b]
 ess0: audio1 interrupting at irq 5
 ess0: audio2 polled
 audio0 at ess0: full duplex, mmap, independent
 opl0 at ess0: model OPL3
 midi0 at opl0: ESS Yamaha OPL3
 
 but, unfortutately, no sound anymore. Well, perhaps just a small "click"
 when I start mpg123.
 
 -Olaf.
 -- 
 ___ Olaf 'Rhialto' Seibert                            --  rhialto/at/falu.nl
 \X/ Hi! I'm a signature virus! Copy me to your .signature to help me spread!