PSADBW
Usage: PSADBW dest,src Modifies flags: None
Computes the absolute value of the difference of 8 unsigned byte integers from the 'src' (second operand) and from the 'dest' (first operand). These 8 differences are then summed to produce an unsigned word integer result that is stored in the 'dest' operand.
Packed Sum of Absolute Differences
PSADBW mm1,mm2/m64 ; 0F F6 /r [KATMAI,MMX]
PSADBW xmm1,xmm2/m128 ; 66 0F F6 /r [WILLAMETTE,SSE2]
PSADBW The PSADBW instruction computes the absolute value of the difference of the packed unsigned bytes in the two source operands. These differences are then summed to produce a word result in the lower 16-bit field of the destination register; the rest of the register is cleared. The destination operand is an MMX or an XMM register. The source operand can either be a register or a memory operand.
EXAMPLE:
psadbw xmm1 Label