Drivers

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CS4280 DRIVER KIT
PW3022r
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RELEASE NOTES

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WDM style Windows 9x & 2000
Driver Version 3022
Released

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Release Date
November 24th 1999
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Contents
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This document covers the following topics:

1. Driver New Features.
2. Driver Kit Files.
3. Installing and Uninstalling the Driver
4. Known Issues and Limitations
5. Copyright and Trademarks

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1. Driver New Features
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- This Driver Kit includes the follwoing:

1. A work around for the "Fast Shut Down Hangs the System" bug,
a known Microsoft Issue.

2. A work around for the "Shut down to DOS and exit back to Window
hangs the system" bug, a known Microsoft issue.

3. A fix for the HCT PnP Enable/Disable I/O test under Windows 2000.

4. A fix for the Call Back WHQL test cases.

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2. Driver Kit Files
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The driver kit consists of the following 20 files :

CWC3D OSP 2,712 11-24-99 3:22a
CWC4610 OSP 8,828 11-24-99 3:22a
CWC4612 OSP 4,944 11-24-99 3:22a
CWCASYNC OSP 2,792 11-24-99 3:22a
CWCHRTF 22 188,960 11-24-99 3:22a
CWCHRTF 44 188,960 11-24-99 3:22a
CWCHRTF V22 188,960 11-24-99 3:22a
CWCHRTF V44 188,960 11-24-99 3:22a
CWCOS SYS 3,168 11-24-99 3:22a
CWCOSNT5 SYS 3,552 11-24-99 3:22a
CWCOSW98 SYS 3,168 11-24-99 3:22a
CWCSPUD DAT 41,145 11-24-99 3:22a
CWCSPUD SYS 115,040 11-24-99 3:22a
CWCSPUD3 SYS 21,728 11-24-99 3:22a
CWCWDM INF 18,421 11-24-99 3:22a
CWCWDM SYS 73,280 11-24-99 3:22a
CWCWT OSP 6,060 11-24-99 3:22a
CWCWTSMP DAT 1,698,752 11-24-99 3:22a
CWCWVTBL SYS 27,552 11-24-99 3:22a
PW3022 CAT 9,396 11-24-99 3:22a

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3. Installing and Uninstalling the Driver
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IMPORTANT: The following installation and uninstallation instructions are only
for Windows 98 SE. A new feature in Windows 2000, called Windows file
protection, prevents certain files from being overwritten. This leads
to installation problems under Windows 2000. We're currently working
with Microsoft to resolve this problem. Once we do, we'll include
installation and uninstallation instructions for Windows 2000 in
subsequent driver kits.

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Installing the driver

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Before you begin

If you already have a WDM-style driver installed, make sure you uninstall the
driver before installing a different one. For details, see "Uninstalling the
driver."

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Installing the driver using the Found New Hardware wizard

After the computer restarts and you log in (if necessary), the Add New Hardware
wizard appears to help you find and install a driver for the audio controller
(labeled PCI Multimedia Audio Device).

To install the driver, follow these steps:

1. Click Next.
The next page appears asking you what you want to do.

2. Click "Search for the best driver for your device", and then click Next.

The next page appears asking you which locations should be searched.

3. Click the checkboxes so that only the "Specify a location" check box is
selected.

4. In the text box, type the pathname for the driver you want to install (or
use the Browse button), and then click Next.

5. If a page appears asking you what you want to install, click "The updated
driver", and then click Next.

The next page appears indicating the location of the driver that Windows
is going to install.

6. Click Next.

Windows copies the driver files to their appropriate folders on your hard
disk.

7. Click Finish.

A series of windows appear telling you that Windows is installing the
driver.

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Uninstalling the driver

To uninstall the driver, you need to do two things:

* Uninstall the audio controller
* Remove the driver files from the computer's hard disk

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Uninstalling the audio controller

1. Right-click My Computer, and then click Properties.

2. Click the Device Manager tab.

3. Click "View devices by type".

4. Click the plus sign next to the "Sound, video and game controllers"
category.

5. Right-click the "Crystal SoundFusion" device, and then click Remove.

6. Click OK.

7. Click Close to close the System Properties dialog box.

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Removing the driver files from the computer's hard disk

1. Delete the c:\windows\cwcdata folder.

2. In the c:\windows\inf\other folder, delete the following file:

crystal semiconductor corporationcwcwdm.inf

3. In the c:\windows\system32\drivers folder, delete all files whose names
begin with "cwc" and have a .sys extension (cwc*.sys).

4. Restart the computer.

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4. Known Issues and Limitations
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1. When the audio controller is attached to a PCI bus other than bus 0,
Device Manager displays the game port with a yellow exclamation point.
Microsoft plans to fix this problem in DirectX 7.0.

2. There is a change in MIDI tempo caused by changing volume when using
DirectSound applications.

3. Suspending and resuming while playing a MIDI file causes noise.

4. There is some stuttering whenever the system is restarted while playing
a wave file.

5. There is some stuttering during the playback of wave files (using the
DSound buffer test application).

6. There is a prompt to restart when Input/Output configuration setting of
Game Port is changed.

7. Disabling and re-enabling certain devices may require a reboot to
complete the operation.

8. When reinstalling the driver under Windows 2000, if the recommended
procedure was not followed, registry problems may occur.

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5. Copyright and Trademarks
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* All brands and product names noted herein are the property or trademarks
of their respective holders.
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Cirrus Logic, 1999
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Filename	Size	Readme	O.S.	Description
5015c.zip	26KB			Cirrus logic Windows 2000 Sound drivers for the CS4281 Chipset. Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide
b95us250.zip	606KB	b95us250.htm		Cirrus Logic Windows 95/98 Sound drivers for the following chipsets:CS4232, CS4236, CS4236B, CS4237B, CS4238B Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide
fv2883c.zip	1170KB			Cirrus Logic Windows 95/98 Sound drivers for the CS4280 chipsets Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide
iusw301r.zip	113KB			Cirrus Logic Windows 2000 reference drivers for the following chipsets: CS4235, CS4236B, CS4237B, CS4238B, CS4239 Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide
pv2883r.zip	9900KB			Cirrus Logic Windows 95/98 drivers for the following chipsets: CS4614, CS4624 Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide
pv5015c.zip	231KB			Cirrus Logic Windows 95/98 drivers for the CS4281 chipsets. Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide
pw3022r.zip	2040KB	pw3022r.htm		Cirrus Logic Windows 2000 Sound Drivers for the following chipsets: CS4280, CS4614, CS4624 Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide
w95us272.zip	466KB	w95us272.htm		Cirrus Logic Windows 95/98 Sound drivers for the following chipsets: CS4235, CS4236B, CS4237B, CS4238B, CS4239 Please note these are reference drivers, if possible get the drivers from the original manufacturer. To find the OEM refer to this guide

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