PATH ADC Home > Documentation > Hardware > Device Managers and Drivers > PCI Card Services > Designing PCI Cards and Drivers for Power Macintosh Computers

  

Synchronous Does Not Equal System Task Time

Calling a device driver synchronously does not guarantee that the driver's entry point will run at system task time. If you are defining a Control or Status call for which your driver must do something that is not interrupt safe, you must define the call to be executed immediately.

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