GameBoy\Opcode::opcode7 PHP Method

    public static function opcode7(Core $core)
    {
        $core->FCarry = ($core->registerA & 0x80) == 0x80;
        $core->registerA = $core->registerA << 1 & 0xff | $core->registerA >> 7;
        $core->FZero = $core->FSubtract = $core->FHalfCarry = false;
    }