sys/dev/video/fb/vga.c
/*
 * set_origin():
 * Change the origin (window mapping) of the banked frame buffer.
 */
Change the origin (window mapping) of the banked frame buffer.
Change the origin ( window mapping ) of the banked frame buffer .
static int
vga_set_origin(video_adapter_t *adp, off_t offset)
{
    return ENODEV;
}
static int vga_set_origin ( video_adapter_t * adp , off_t offset ) { return ENODEV ; }
set_origin():
 Change the origin (window mapping) of the banked frame buffer.
set_origin () : Change the origin ( window mapping ) of the banked frame buffer .
/* 
     * The standard video modes do not require window mapping; 
     * always return error.
     */