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Returns

A few details
There are two kinds of returns:
Returns are the slowest instructions in the pAVR implementation of the AVR instruction set. They take 9 clocks.
First 2 clocks are spent while waiting the previous instructions to write the Unified Memory. Next 5 clocks, the Program Counter is read from the Unified Memory. In a future version, this part might take only 4 clocks. Finally, another 2 clocks are spent while bringing the target instruction into the instruction register.

pavr_pipe_returns_01.gif


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