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PRD function setup

Robert Quinn
Intellectual 730 points


I have seen the following examples in a .tcf file (for CCS5 DSP/BIOS 5.41.13.42):

bios.PRD_5ms.fxn = prog.extern("SWI_post");
bios.PRD_5ms.arg0 = prog.extern("SWI_5ms");

and

bios.PRD_5ms.fxn = prog.extern("SWI_5ms");

What is the difference?  Why would I need to use SWI_post?