_vga_attr_write
_vga_attr_write(vh, VGA_ATC_OVERSCAN, fgansitopc[value]);
_vga_attr_write(vh, VGA_ATC_OVERSCAN,
_vga_attr_write(vh, i, regs->atc[i]);
_vga_attr_write(vh, i, vga_atc[i]);
_vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
static __inline void _vga_attr_write(struct vga_handle *, int, u_int8_t);