//***************** C-Media AC97 NT4 driver Release Note ******************//
(Support Intel ich2/ich4,sis7012,via8233)
--Standard Version--
Date: 2003/08/21
Version: 4.10.00.002Ea
Driver description:
The C-Media AC97 codec driver is working on the NT4.0 with Intel Ich2, ICH4,
Sis7012, and Via8233 Via686 and nVidia chipsets. It consists seven files:
IAC97U4.DLL // ac97 user mode driver
IAC97K4.SYS // ac97 kernel mode driver
OEMSETUP.INF // installation inforamtion
SMIDI32.DLL // midi library
WAVE.DAT
TABLE.DAT
CMINT40.INI
Modification:
-support cm9738/9739/9761 codec
Date: 2003/04/08
Version: 4.10.00.002Da
Driver description:
The C-Media cm9738 driver is working on the NT4.0 with Intel Ich2, ICH4,
Sis7012, and Via8233 Via686 and nVidia chipsets. It consists seven files:
IAC97U4.DLL // ac97 user mode driver
IAC97K4.SYS // ac97 kernel mode driver
OEMSETUP.INF // installation inforamtion
SMIDI32.DLL // midi library
WAVE.DAT
TABLE.DAT
CMINT40.INI
Modification:
-support ICH5, and add checking secondary codec.
----------------------
2002/10/31
-Add DCOffset
2002/10/01
- Unify the codec's output string to "C-Media AC97 xxxx" (ex. Mixer/Wave Out/Stereo In/Midi Out).
- Fixed a bug: Mic Boost enable function.
- Fixed a bug: Cmi9739: Master/Waveout volume control.
2002/10/14
-Fixed a bug: Moving Waveout Volume when Mater volume is mute on Cmi9739.
2002/08/28
- Provide Cmint40.ini file to identify the special motherboard IDs and their features.
- Fixed a bug: Let CD-In volume control smoothly in cmi9738.
2002/08/14
Version: 4.10.00.0025a
- Add to support nVidia and Via686 chipsets
----------------------
Date: 2002/08/02
Version: 4.10.00.0022a
- Fixed a bug: Master volume control
----------------------
2002/07/30
Version: 4.10.00.0017a
- Fixed a bug: Move the balance of master volume to left and CD-In's to right most, it should be silence.
----------------------
2002/07/24
Version: 4.10.00.0016a
- Fixed a bug: abnormal noise occurred on mic recording with 22.05kHz/single channel.
----------------------
2002/07/12
Version: 4.10.00.0014a
- Let silence if the scale of Internal CD-In/ Line-In is setting to min.
2002/07/10
- Force codec playback/record state to 2-channels.
----------------------
Date: 2002/06/11
Version: 4.10.00.0011a for Standard
- Enable Master Volume Boost function.
- Support midi out function, and dynmaic checking midi library is existed or not.
- FIT ASUS REQUIREMENT(ICH2/ICH4/Sis7012/Via8233 South Bridge):
Combine Phone and Auxillary controls into one (Aux/Phone) on Windows Mixer.
----------------------
Date: 2002/06/03
Version: 4.10.00.0010a for Standard
- Default Master volume is set to Max(0xffff),
WaveOut, CD-Outn, Line-Out is the half of max(0x7fff),
Mic-In, CD-In, Line-In is 0x1fff.
----------------------
Date: 2002/05/28
Version: 4.10.00.0007a for Standard
- Enable Master Volume Boost function.
----------------------
Date: 2002/05/21
Version: 4.10.00.0006 for Standard
- Check the secondary codec if the chipset is ich4 and primary codec is not ready.
----------------------------
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
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