I''m using Visual C++ 6.0, I also installed the latest Service Pack for it (SP5). But when I''m trying to compile inline SSE asm code, it give me an error, for example: __asm movups xmm0, xmm1 gives me "unsupported inline assembly opcode". MMX works perfectly though. HELP! GPSnoopy

Did you install the processor pack ?

You should found it on microsoft website

HTH

Nope, when I try to install it it says I need the Service Pack 4, but I have the SP5.

Also, when I watch the registers in debug mode I can see the XMM registers.

Well, I reinstalled SP4 over VS6.0 SP5, installed the Processor Pack and then reinstalled SP5 and now it works... kinda messy fix hey?

:-)