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Date: Wed, 07 Jun 2000 17:59:43 +0900
From: Ushine Hiroyuki <ush@netlab.is.tsukuba.ac.jp>
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Subject: [FreeBSD-users-jp 52400] Re: YMF724/740/744/754
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$B5m:,$G$9!%(B

ush> inoue-ml> pcm0: ac97 codec invalid or not present (id == ffffffff)
ush> $BLdBj$O(B ac97 codec chip $B$r8+$D$1$F$$$J$$$H$$$C$F$$$k$H$3$m$G$9$M!%(B
ush> 
ush> $B$&!<$s!$$J$s$G$7$g$&$M!%(BVIBRA16X$B$rIU$1$F$*$i$l$k$H$3$m$r$_$k$H(B
ush> PC/PCI$B%j%s%/$J$I$O@\B3$5$l$F$$$J$$$O$:$G$9$7!%(B
$B$R$g$C$H$7$?$i(B, 1.3 $B$+$i(B 1.4$B$G$NJQ99$GF~$C$?ItJ,(B

>peter       2000/05/31 20:58:27 PDT
>
>  Modified files:
>    sys/dev/sound/pci    ds1.c
>  Log:
>  With this evil hack the DS1 driver works on our Intel desktop
>  motherboards that use YMF740's.  It has a strange subvendor and subdevice
>  ID and requires a disturbingly long delay after the ac97 codec init.
>  Cameron hasn't had this driver tested on another 740 yet, so we don't know
>  if this is a quirk of all 740's, or if its just something about the codec
>  that Intel used.
>
>  Revision  Changes    Path
>  1.4       +15 -3     src/sys/dev/sound/pci/ds1.c
$B%=!<%9$G$O(B 740 $B$N$H$-$@$1(B AC97 $B%3%s%H%m!<%i$+$i(B CODEC$B%j%;%C%H$rH/9T(B
$B$7$F$+$i(B 400ms$B$[$I%&%'%$%H$r$$$l$F$$$^$9!%(B
#300ms$B$G$O(BNG $B$H$$$&$3$H$G$9!%(B
if its just something about the codec that  Intel used$B$N2DG=@-!$(B
$B$"$k<o$N(BAC97 CODEC$B$r%j%;%C%H$7$?$"$H$N%&%'%$%H$,$?$i$J$$$N$G$O(B
$B$J$$$+$H;W$o$l$^$9!%(B

$B$9$_$^$;$s$,!$0f>e$5$s(B ds1.c $B$N(B 260 $B9TL\(B
if (sc->type == 8)
$B$r%3%a%s%H%"%&%H$7$F;n$7$F$b$i$($^$;$s$+!)(B

