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Appendix A
MMX TM INSTRUCTION SET
The table below contains a summary of the MMX instruction set. The instruction mnemonics below are the base set of mnemonics; most instructions have multiple variations (e.g., packed-byte, -word, and -dword variations). Complete information on the MMX instructions may be found in the Intel Architecture MMX TM Technology Programmer’s Reference Manual (Order Number 243007).
| Table A-1. Intel Architecture MMXTM Instruction Set | |||
| Packed Arithmetic | Wrap Around | Signed Sat | Unsigned Sat |
| Addition | PADD | PADDS | PADDUS |
| Subtraction | PSUB | PSUBS | PSUBUS |
| Multiplication | PMULL/H | ||
| Multiply & add | PMADD | ||
| Shift right Arithmetic | PSRA | ||
| Compare | PCMPcc | ||
| Conversions | Regular | Signed Sat | Unsigned Sat |
| Pack | PACKSS | PACKUS | |
| Unpack | PUNPCKL/H | ||
| Logical Operations | Packed | Full 64-bit | |
| And | PAND | ||
| And not | PANDN | ||
| Or | POR | ||
| Exclusive or | PXOR | ||
| Shift left | PSLL | PSLL | |
| Shift right | PSRL | PSRL | |
| Transfers and Memory Operations | 32-bit | 64-bit | |
| Register-register move | MOVD | MOVQ | |
| Load from memory | MOVD | MOVQ | |
| Store to memory | MOVD | MOVQ | |
| Miscellaneous | |||
| Empty multimedia state | EMMS | ||
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