i810_writel(MEM_MODE, mmio, i810_readl(MEM_MODE, mmio) | 4);
static void i810_hires(u8 __iomem *mmio){	u8 val;		i810_writeb(CR_INDEX_CGA, mmio, CR80);	val = i810_readb(CR_DATA_CGA, mmio);	i810_writeb(CR_INDEX_CGA, mmio, CR80);	i810_writeb(CR_DATA_CGA, mmio, val | 1);}