GNU Info

(nasm.info)Section B.4.200

---

Next: Section B.4.201 Prev: Section B.4.199 Up: Section B.4

---

Enter node , (file) or (file)node

B.4.200. `PADDSIW': MMX Packed Addition to Implicit Destination
---------------------------------------------------------------

     PADDSIW mmxreg,r/m64          ; 0F 51 /r             [CYRIX,MMX]

   `PADDSIW', specific to the Cyrix extensions to the MMX instruction
set, performs the same function as `PADDSW', except that the result is
placed in an implied register.

   To work out the implied register, invert the lowest bit in the
register number. So `PADDSIW MM0,MM2' would put the result in `MM1', but
`PADDSIW MM1,MM2' would put the result in `MM0'.