fb_readb
unsigned char tile = fb_readb(cinfo->laguna_mmio + 0x407);
fb_readb(par->io_virt + VGA_IS1_RC); /* flip-flop to index */
return fb_readb(p->io_virt + reg);
fb_readb(par->io_virt + VGA_IS1_RC); /* flip-flop to index */
fb_readb(dst);
#ifndef fb_readb
#define fb_readb fb_readb