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I have VmWare 6.03 working fine on Server 08 64-bit (which is basically the same as vista x64)

I fixed the PCI-stuff and the code now works under VirtualBox like it should.

That means the SSE-move runs on real hardware (under Windows, Linux), Bochs, QEMU and VirtualBox. It also works under VirtualPC (under Windows). But not with VirtualPC and my OS.

And I still have no clue why...

I found out that all aligned MMX and SSE reads and writes to video memory fail under Virtual PC. It works when the code works with normal system memory.

This looks like a VPC bug.


Case closed.