Opcode PEXTRW
CPU: Pentium III+ (KNI/MMX2), AMD Athlon (AMD EMMX)
Type of instruction: User
Instruction: PEXTRW dest,src,which_word
Description:
word TMP = which_word AND 0x3;
word MM_TMP = (src >> (TMP * 16)) AND 0xffff;
dest[15..0] <- MM_TMP;
dest[31..16] <- 0;
Physical Form and Timing:
PEXTRW r32,mm,imm8 ---- 0F C5 /r imm8 ---- ??
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