> I believe mov ah,al is one byte for the mnemonic and two bytes for the registers for a total of 3 bytes. Two bytes in the 8086 mode: 88C4 mov ah,al

> I believe mov ah,al is one byte for the mnemonic and two bytes for the registers for a total of 3 bytes. Two bytes in the 8086 mode: 88C4 mov ah,al And inside, ah and al are encoded with the 3 bits each, spending just 6 bits for "from which register to which register."