MMX Instructions

Arithmetic

Name	Regs	Opcode	Description
PADDB	register, memory/register	0F FC mod-rm	Add with wrap-around on byte
PADDW	register, memory/register	0F FD mod-rm	Add with wrap-around on word
PADDD	register, memory/register	0F FE mod-rm	Add with wrap-around on doubleword
PADDSB	register, memory/register	0F EC mod-rm	Add signed with saturation on byte
PADDSW	register, memory/register	0F ED mod-rm	Add signed with saturation on word
PADDUSB	register, memory/register	0F DC mod-rm	Add unsigned with saturation on byte
PADDUSW	register, memory/register	0F DD mod-rm	Add unsigned with saturation on word
PSUBB	register, memory/register	0F F8 mod-rm	Subtraction with wrap-around on byte
PSUBW	register, memory/register	0F F9 mod-rm	Subtraction with wrap-around on word
PSUBD	register, memory/register	0F FA mod-rm	Subtraction with wrap-around on doubleword
PSUBSB	register, memory/register	0F E8 mod-rm	Subtract signed with saturation on byte
PSUBSW	register, memory/register	0F E9 mod-rm	Subtract signed with saturation on word
PSUBUSB	register, memory/register	0F D8 mod-rm	Subtract unsigned with saturation on byte
PSUBUSW	register, memory/register	0F D9 mod-rm	Subtract unsigned with saturation on word
PMULHW	register, memory/register	0F E5 mod-rm	Packed multiply high on words
PMULLW	register, memory/register	0F D5 mod-rm	Packed multiply low on words
PMADDWD	register, memory/register	0F F5 mod-rm	Packed multiply on words and add resulting pairs