OSMMAUDA - WIN-OS/2 AUDIO PROBLEMS WITH PAS 16 OR SOUND BLASTER CARDS
01/30/96

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      WIN-OS/2 Audio Problems with PAS 16 or Sound Blaster Cards
                      OS/2 2.1 and OS/2 2.11
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Please Read Entire Document for Full Explanation of Procedures
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DESCRIPTION

* Unable to use audio adapter from WIN-OS/2 environment.

* WIN-OS/2 system sounds do not work.

* Audio adapter is inaccessible to Windows or DOS applications.

MMPM/2 for OS/2 is installed and can use the device.

RESOLUTION

Install DOS and Windows device support.

The OS/2 installation does not install DOS or Windows audio-device 
support. Some Windows device drivers are shipped with WIN-OS/2, but are 
specific to a few versions of the adapters (for example, Sound Blaster 
Version 1.0 and 1.5).

You can do the following steps to enable you to use audio from OS/2, 
DOS, and WIN-OS/2. The directions apply to the Sound Blaster and Pro 
AudioSpectrum 16 cards. Use the diskettes that came with the adapter to 
install drivers.

1. Install MMPM/2.

2. Open a DOS session; then using the diskette for the adapter, run the
   DOS Installation program:

   * For Sound Blaster, the installation program is INST-HD.EXE.
   * For Pro AudioSpectrum 16, the installation program is INSTALL.EXE
     and is on the diskette labeled PAS 16 Install Diskette.

   Depending on the adapter and installation utility level, the
   installation program might install the WIN-OS/2 drivers too. If this
   happens, skip step 3.

3. Close and exit the DOS session.

4. Open a WIN-OS/2 session; then using File Manager, execute the
   program from the diskette to install Windows drivers. For Pro
   AudioSpectrum 16, use SETUP.EXE.

5. Close and exit the WIN-OS/2 session.

6. Open a WIN-OS/2 session again. You should have audio.

Notes:

1. The OS/2 PDD, DOS device driver, and WIN-OS/2 driver must access the
   device on the same DMA channel and use the same IRQ:

   * For 8-bit devices, use DMA channel 1 or 3.
   * For 16-bit devices, use DMA channel 5, 6, or 7.

2. When an audio device is being used by WIN-OS/2, the device is not
   accessible to MMPM/2. Equivalently, when the device is being used by
   MMPM/2, it cannot be used by DOS and WIN-OS/2 sessions.

3. By default, audio in WIN-OS/2 and DOS sessions is considered
   optional. You don't want to be prevented from running Windows
   applications because you can't play the TADA.WAV startup sound.

4. The DOS property, AUDIO_ADAPTER_SHARING, can change these
   requirements. When set to Required, on the first access to the audio
   adapter, the session requires the adapter. If it cannot gain
   exclusive ownership, an error message is displayed.

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