32/64-Bit 80x86 Assembly Language Architecture

The simplified form of this parallel instruction individually calculates the differences of each of the packed bits, then sums the absolute value for all of them, and returns the result in the destination.

VD[0] = vA[0] vB[0] + ... + vA[n1] vB[n1] ;

PSADBW N—8-Bit Sum of Absolute Differences

Mnemonic

P

PII

K6

3D!

3Mx+

SSE

SSE2

A64

SSE3

E64T

PSADBW