Ok, i'll check after work. I have 32bits and 15bits also working here.

and btw. rzookol = zukow (Michal Zukowski), i have my old login here :)

and ... the real question is if we can fix dosbox earlier so vga card would provide Bigendian memory because there are multiple places where endian conversion occurs, maybe we can ommit the double conversions. It needs to be analyzed. If not, i would check also to do endian conversion using altivec and scalers aren't the best place to do it as they operate on single pixels. Regarding directly using PC modes in SDL, it works for 16bit screen very nicely (i've just disabled byteswapping in powersdl).