Forum Post: RE: DSP BIOS execution time of SWI_Post function

Lars,

OK, thanks.

I will have to ask around for other ideas.  The same software on exactly the same hardware should obviously give the same results.  I wonder if you’ve tried a third board?  Maybe the timing on A or B is malfunctioning in some odd way?

Also, I wonder if you’ve tried setting IERDISABLE mask in the HWI_enter/HWI_exit calls to mask off all other interrupts?  I’m wondering if somehow there is a preemption of the ISR on board B that is making it look like SWI_post() is taking longer there?  Just a guess, but it might be worth a try…

Scott