--------------------------------------- CS4280 DRIVER KIT PW3022r --------------------------------------- RELEASE NOTES --------------------------------------- WDM style Windows 9x & 2000 Driver Version 3022 Released --------------------------------------- Release Date November 24th 1999 --------------------------------------- -------------------------------------------------------------------------------- Contents -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 1. Driver New Features -------------------------------------------------------------------------------- - 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. -------------------------------------------------------------------------------- 2. Driver Kit Files -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 3. Installing and Uninstalling the Driver -------------------------------------------------------------------------------- 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. ================================================================================ Installing the driver -------------------------------------------------------------------------------- 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." -------------------------------------------------------------------------------- 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. ================================================================================ 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 -------------------------------------------------------------------------------- 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. -------------------------------------------------------------------------------- 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. -------------------------------------------------------------------------------- 4. Known Issues and Limitations -------------------------------------------------------------------------------- 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. -------------------------------------------------------------------------------- 5. Copyright and Trademarks -------------------------------------------------------------------------------- * All brands and product names noted herein are the property or trademarks of their respective holders. -------------------------------------------------------------------------------- Cirrus Logic, 1999 --------------------------------------------------------------------------------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.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.