GameBoy\Opcode::opcode144 PHP Method

    public static function opcode144(Core $core)
    {
        $dirtySum = $core->registerA - $core->registerB;
        $core->FHalfCarry = ($core->registerA & 0xf) < ($core->registerB & 0xf);
        $core->FCarry = $dirtySum < 0;
        $core->registerA = $core->unsbtub($dirtySum);
        $core->FZero = $core->registerA == 0;
        $core->FSubtract = true;
    }