AW8: That's a bit more tricky. Rob's module provides in a couple of non critical missing instructions, the CLZ (clear zero) and one of the signed multiply variants. The StrongARM has a few more missing instructions, but the crucial part is the codes use of LDRH/STRH (16bit load/store) instructions which are supported by the StrongARM but not by the RisIOMD memory manager. Any 16bit accessing missing the cache, or not in Kinetic fast RAM, will not be performed correctly.
But anyway, a little patch for the A9 is ok, but anything more is a waste of time, the source needs recompiling for a StrongARM machine or it would be even slower than necessary. Peter or another developer will support the older machines (if viable), when they are good and ready.