Hi all,
In ucSim, where or what defines how many simulated cycles each
instruction takes? Specifically, I am looking at the STM8 simulator.
I recently got around to running the benchmark of my assembly
implementations of some string.h functions (see patch #333 for details)
on physical hardware and was surprised to find a significant discrepancy
for one piece of code in the relationship between cycles measured by
ucSim and execution time on real hardware.
When plotted on an equivalent scale, sim cycles vs. H/W exec time
corresponds very closely everywhere, except for my strcspn routine,
where ucSim cycle count is significantly lower compared to the H/W
execution time.
I have a feeling ucSim might not be using the correct number of cycles
somewhere. Not sure where, though, because I'm not using any unusual
instructions in the strcspn assembly code that aren't used elsewhere.
Regards,
Basil Hussain
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