AST RESEARCH, INC.        TECHNICAL BULLETIN # 1593          09/24/96 
 
 
 
TITLE:  DirectX Win95 Replaces Crystal Drivers
 
 
SUMMARY 
 
   Applications written for Windows 95 that utilize "DirectX" 
   technology replace the existing Crystal Audio CS4232 drivers with 
   the default Microsoft Sound System drivers.
   
   This issue affects the following systems: 501766, 501767, 501768, 
   501769, 501770, 501794, 501795, 501829, 501855, 501856    


ISSUE 
 
   Applications written for Windows 95 that utilize "DirectX" 
   technology replace the existing Crystal Audio CS4232 drivers with 
   the default Microsoft Sound System drivers.
   
   The Microsoft Sound System drivers will limit some of the audio 
   performance capabilities originally available on the computer.    

 
BACKGROUND 
 
   "DirectX" technology searches for a compatible sound system to 
   take full advantage of "DirectX". The first compatible sound 
   system that it finds is Microsoft Sound System. It installs and 
   sets up to run with this sound system. Some of the programs that 
   are known to cause this issue are:
   
   Return to Fire
   Hive
   Mech Warrior
   Microsoft Fury
   Doom for 95
   
   This issue occurs only upon installation of the program. Once the 
   issue is corrected, the program should perform as designed on all 
   subsequent executions.    

 
ACTION 
 
   Delete the Microsoft Sound System device driver and reinstall the 
   Crystal CS4232 Audio drivers.
   
   AST provides a disk utility called ASTDU which allows the user to 
   make disks of the software needed for the system. 
   Use ASTDU to make the "Crystal CS4232 Audio Drivers" diskette. 
   Using the diskette created by ASTDU, follow the steps below to 
   reinstall the CS4232 audio drivers.
   
   To install or update audio drivers in Windows 95, follow these steps.
   
   Audio Device Removal Instructions
   
   1. Using the right mouse button, click on the My Computer
      icon.
   
   2. Choose Properties from the drop down menu.
   
   3. Select the tab labeled Device Manager.
   
   4. Click on the listing called Sound, video and game
      controllers to access the devices contained inside.
   
   5. Select Microsoft Sound System from the list and click 
      on Remove.
   
   6. Answer any prompts with the appropriate answer to 
      remove the driver.
   
   7. Click OK to close Device Manager.
   
   
   Installing The Audio Device
   
   1. Click on the Start button. Then go to Settings and 
      click on Control Panel.
   
   2. Double click on Add New Hardware.
   
   3. Click the Next button. Click on No, then click on the 
      Next button again.
   
   4. Scroll the list of devices and select Sound, video and 
      game controllers, then click on Next.
   
   5. Insert the CS4232 drivers diskette in the floppy drive 
      and click on Have disk.
   
   6. Insure that the path in the text box is A:\ and press 
      OK.
   
   7. Select CS4232 and click on Next.
   
   After the installation of the audio drivers is complete, AST 
   recommends that the computer be shut down properly and restarted 
   to ensure that all the proper drivers are correctly loaded into memory.    

 
NOTES 
 
   N/A    

 
TAN 003600RL 
 
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