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Imagine that we want to divide a number by a power of two (2, 4, 8, 16, etc.) and then rounding it upwards. In this case, why not use:
shr ax,4 ; Here we divide by 16
adc ax,0
The only problem is that this combination will not pair on the Pentium. Both instructions do only pair in the U pipe. For interleaved code, insert an instruction that does not modify the Carry Flag.