SYS BIOS Interrupt Numbers

Brian Lacy

Other Parts Discussed in Thread: SYSBIOS

Configuration:

Processor: C6457
SYSBIOS: 6.33.05.46
xdcTools: 3.23.02.47

Question:

What is the maximum interrupt number that is available when calling the function Hwi_create. The interrupt number is the first parameter of this function.

Thank you.

over 13 years ago

0 Michael P over 13 years ago

Expert 1810 points

C64x DSP cores have 12 user-mappable interrupts, numbered from 4 through 15.

0 Brian Lacy over 13 years ago in reply to Michael P

Intellectual 290 points

Thank you. I could not find this info in the TI SYS/BIOS v6.33 Real-time Operating System users Guide, Literature Number: SPRUEX3K, December 2011.

0 Michael P over 13 years ago in reply to Brian Lacy

Expert 1810 points

I suspect that TI did not include the valid ranges for Hwi numbers in SPRUEX3 because they are determined by the target CPU architecture rather than by SYS/BIOS. The range is documented in the DSP-related user manuals -- for example, in Table 5-1 of SPRU732J (which also illustrates the fixed events that correspond to interrupt numbers 0 through 3).

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SYS BIOS Interrupt Numbers