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C1000/3x00 General discussions / Wireless Multimedia Instructions

« on: January 28, 2005, 07:27:18 am »

Judging from Intel's website, these aren't very similar to the MMX found on Pentium 2 and latter processors.
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Where did you find that information?  The Intel PXA27x Processor Family Optimization Guide explicitly encourages re-using existing x86 MMX code for the PXA (although with a few caveats) and gives a few examples of  mapping between x86 MMX and PXA Wireless MMX. I'd say the PXA variant is actually more powerful than x86 MMX because it offers more registers (16 instead of and uses three instead of two registers in the instructions.