5.4.22. SYS_TICKFREQ (0x31)

Returns the tick frequency.

Entry

Register r1 must contain 0 on entry to this routine.

Return

On exit, r0 contains either:

  • the number ticks per second

  • –1 if the target does not know the value of one tick. Multi-ICE does not support this SWI and always returns –1.

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