GameBoy\Opcode::opcode31 PHP Méthode

    public static function opcode31(Core $core)
    {
        $carry_flag = $core->FCarry ? 0x80 : 0;
        $core->FCarry = ($core->registerA & 1) == 1;
        $core->registerA = ($core->registerA >> 1) + $carry_flag;
        $core->FZero = $core->FSubtract = $core->FHalfCarry = false;
    }