(thing) by novalis Thu Apr 20 2000 at 12:50:09
MMX instruction to subtract packed bytes with unsigned saturation.

A MMX register or 64 bit memory location is subtracted from to a MMX register, byte-wise. Negative bytes are clamped to 0.

Compare PSUBUSW, PSUBUSD, PSUBSB, PSUBB.
I like it!

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