What is the byte corresponding to the highest 8 bits in md 100?

MB4 is a byte corresponding to the highest 8 bits in md 100. According to the relevant information of the query, the high-low WORD (word) is displayed as 16-bit symbol number, the INT (integer) is 16-bit symbol number, and the byte refers to the bit position of word or double-word data. The bytes in md 100 are MB0 to MB4, the low byte is MB0 and the high byte is MB4.