VBGamer

I think the assembler alogrithm is probably the CopyMemory Library. Despite what you may think/complain about - the Windows API are highly optimised and a lot of the time-critical stuff is written in the low-level languages (such as ASM). I wrote a C++ DLL that did a Blt-Not on a surface. In theory it could do 614,400 changes in UNDER 1ms (I got divide by 0 errors when doing averages in VB). The same took 170ms in VB.