http://bugs.winehq.org/show_bug.cgi?id=11203
--- Comment #39 from Stefan Dösinger stefandoesinger@gmx.at 2009-08-16 08:53:34 --- I'm pretty sure the onboard chipsets like the Intel GMA also use 32 bit framebuffers. They have their own graphics processor, just not their own memory. Accessing the system memory with unaligned access would be pretty awkward I think.