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ARM on ARM emulation is always going to be slow, but an optimising dynamic translator (nee JIT) does have the potential to turn one emulated instruction in to one native instruction in a large number of cases, and generate far more efficent inline code to do memory lookups. It still will be far slower than fully native, but orders of magnetude faster than pure emulation. The only draw back is the large amount of memory required for a translation cache may not be available on the target device. In which case a simpilier block based JIT as used in Virtual RPC, may produce large gains to be useable, but without such a severe meory penalty.

 is a RISC OS Userdruck on 27/2/06 9:32AM
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