according to AMD Volume 4,





but when I try:





I get error:






the above movd zero extends rax to 128 bits in xmm0,
not sure what size the operand is then, 128 bits? 64 bits?

I tried also:



both of which dont function.

There's a sticky about it http://board.flatassembler.net/topic.php?t=6743
Tomasz is already working on it!