AST RESEARCH, INC.         TECHNICAL BULLETIN #0850               08-04-93




       SOUNBLASTER PRO II FAILURE WITH 386/25 AND /33 PROCESSOR CARDS


PROBLEM:       Distortion of ".WAV"-type files occur in Windows 3.1 when
               played through a Creative Labs Sounblaster Pro II card.  The
               problem only occurs in a system where the processor is a
               386/25 or 386/33.

CAUSE:         The Sounblaster card stops issuing DMA requests and times out
               during the playback of a .WAV file due to the excessive amount
               of time that the processor card takes to process the DMA
               request.

AFFECTED
SYSTEMS:       All AST systems with a 386/25 or a 386/33 processor card with
               AST part number 202403-00X.

SOLUTION:      The 386 processor card must be replaced with a processor that
               is not of the same type (part number).