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SynchronizeIO

void SynchronizeIO (void)
DESCRIPTION

The SynchronizeIO routine performs the necessary operations to ensure orderly code execution between accesses to noncached devices.

WARNING

Failure to use SynchronizeIO between I/O accesses can misorder load and store operations, with unpredictable results for program execution.

EXECUTION CONTEXT

SynchronizeIO may be called from task level, secondary interrupt level, or hardware interrupt level.

© 1999 Apple Computer, Inc. – (Last Updated 26 March 99)