Function
0
Whole word
1
Upper byte/ odd address
Lower byte/even address
none
are the common signal line in 8086 If the address bus contains If , then it reads the 16 bits data from memory location and . If , it reads the 8 bits data from memory location . If the address bus contains 00001H. If , then it reads the 8 bits data from memory location 00001H.
are the common signal line in 8086
If the address bus contains
If , then it reads the 16 bits data from memory location and .
If , it reads the 8 bits data from memory location .
If the address bus contains 00001H.
If , then it reads the 8 bits data from memory location 00001H.
are the common signal line in 8086 
, then it reads the 16 bits data from memory location
and 
.
, it reads the 8 bits data from memory location 
, then it reads the 8 bits data from memory location 00001H.