I have an old
computer that was intended to do FFTs. It has a
 complete bit order swap, MSB to LSB, instruction. 
 Well, there's the PowerPC "endian" mode (settable in the MSR)--but it's
 just "sort of"--the little-endian mode simply XORs the lower 3 bits of
 the address with 111 (i.e. "flips them"). 
 
Or you could use the PowerPC byte-swapped instructions (lwbrx, etc.)
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  Cameron Kaiser * Floodgap Systems * 
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