Instruction Clock Cycle Calculation
Some instructions require additional clock cycles due to a "Next
Instruction Component" identified by a "+m" in the instruction
clock cycle listings. This is due to the prefetch queue being
purge on a control transfers. Below is the general rule for
calculating "m":
88/86 not applicable
286 "m" is the number of bytes in the next instruction
386 "m" is the number of components in the next instruction
(the instruction coding (each byte), plus the data and
the displacement are all considered components)
Back to Intel Instruction Set page.