RGen
RGen(cinfo, VGA_PEL_IW);
RGen(cinfo, VGA_PEL_MSK);
RGen(cinfo, VGA_PEL_MSK);
RGen(cinfo, VGA_PEL_MSK);
RGen(cinfo, VGA_PEL_MSK);
RGen(cinfo, VGA_PEL_IW);
static unsigned char RGen(const struct cirrusfb_info *cinfo, int regnum);