[wdmaudiodev] ac97+ICH5 can not playback sound.
- From: "rai" <rai.nuaa@xxxxxxx>
- To: "wdmaudiodev" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 1 Jun 2006 16:08:42 -0700
Hi All,
I am working on a AC97 driver for WinXP.
I started from the sample driver code provided by XDDK.
First time, I installed the driver on an Intel 845GE machine (ICH4),
the driver reported that : PrimaryCodecReady timed out.
then I modified
NTSTATUS CAdapterCommon::PrimaryCodecReady (void),
make sure that the function will always return STATUS_SUCCESS.
then, the driver can basically work (play/record) on ICH4.
After that I tried the driver on ICH5, it also report primary codec is not
ready,
after I did the same thing(modify the function), the driver can be installed.
Device manager also report that the driver works properly.
But I can not hear any sound from the speaker jak.
I think there must be some difference between ICH4 and ICH5 on controlling AC97
codec,
but I am not familiar with AC97 standard.
Does anybody here can help or has the same experience?
Thanks.
Rai.
2006-06-01
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