┌──┬──┬──┬──┬──┬──┬──┬──┐ │OF│DF│IF│SF│ZF│AF│PF│CF│ ├──┼──┼──┼──┼──┼──┼──┼──┤ │ │ │ │ │* │ │ │ │ └──┴──┴──┴──┴──┴──┴──┴──┘
The ZF flag is set unless the selector is invisible or of the wrong type, in which case the ZF flag is cleared.