(thing) by novalis Thu Apr 20 2000 at 12:41:41
MMX instruction to subtract packed words with signed saturation.

A MMX register or 64 bit memory location is subtracted from to a MMX register, word-wise. Words that underflow are clamped to -32768.

Compare PSUBSB, PSUBSD, PSUBUSW, PSUBW.
I like it!

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