6-1
Chapter 6
Input/Output Methods
This chapter provides an overview of DSP/BIOS data transfer methods, and
discusses pipes in particular.
6.1 I/O Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.2 Comparing Pipes and Streams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6.3 Comparing Driver Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5
6.4 Data Pipe Manager (PIP Module) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8
6.5 Message Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-15
6.6 Host Channel Manager (HST Module) . . . . . . . . . . . . . . . . . . . . . . . .6-27
6.7 I/O Performance Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-28
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