| Re: [hatari-devel] Hatari profiler updates and CPU cycle questions |
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Jan 30, 2013 07:51:09 AM, hatari-devel@xxxxxxxxxxxxxxxxxxx wrote:
> Hi,
>
> Now I'd like to know, is it possible for an instruction to use 0 cycles,
> like CPU cycle counter value difference would indicate for subq here:
>
> - Eero
I don't think so. However, two things come to mind.
1) Maybe the instruction was interrupted by an exception.
2) dBxx to itself will decrement a register without continuously fetching itself (IIRC).
David