https://git.libre-soc.org/?p=libresoc-isa-manual.git;a=blob;f=powerpc-add/src/glossary.tex;h=0ddc36e1ae9687a801731b9c65691f20a32a4d7c;hb=09020a5d1e22d10c3166dfdac23e19a5db6e7c92 phase-aware function unit a function unit (pipeline or FSM) that specifically monitors the production of a result from start (receipt of operands) to finish (output of result). The CDC6600 term for the same is "Computation Unit". A phase-aware function unit is essential for out-of-order execution to avoid data corruption. MSB0 LSB0