Quickest way to get highest set bit on port in to a variable?

[Archangel]

Henric, never the less, not as quick as 8 rotates and 8 jump on carry in-line. Worst case, with no bits set in the target thats only 16 cycles.

rscor01, I didn't realize LOOKUP would do that. How would that go?

George

lookdown2 index, >= [%00000000,%00000001,%00000010],temp