附加段中有个一已经排序的数组，数组中第一个元素存放数组的长度，在AX中有个无符号数，在数组中查找（AX），如果找到，则CF=0，，在SI中存放该元素在数组中的偏移地址。使用折半查找的方法-Additional paragraph, there is an already sorted array, the first element in the array store the length of the array have a unsigned number in AX, (AX) in the array to find if found, then CF = 0, SI store the offset address of the element in the array. Using the binary search method