https://groups.google.com/d/msg/comp.arch/w5fUBkrcw-s/TEBAs2xmBwAJ apparently scoreboards cannot cope with / issue multiple LOAD operations. that's a major show-stopper as we have the hardware-macro-loop-unrolling on LD operations (and ST). will have to see how answers progress, there, if anyone knows if scoreboards have been improved, since. l.