MMX is short for MultiMedia Extensions and was developed by Intel for Pentium MMX.
It contains a set of instructions that allows the programmers to operate on 8 bytes (64 bits) in 8 registers. AviSynth uses this technology to speed up many of the internal filters.
Furthermore see IntegerSSE.
$Date: 2006/11/08 20:40:17 $
Original version of this document http://www.avisynth.org/MMX