In an 8086 based system, the 1Mbyte memory is physically organized as odd bank and even bank, each of 512kbytes, addressed in parallel by the processor.
Byte data with even address is transferred on and byte data with odd address is transferred on .
The processor provides two enable signals, and for selecting of either even or odd or both the banks.
The memory organization of 8086 is shown in the Figure 11.9.
and byte data with odd address is transferred on 
.
and 
for selecting of either even or odd or both the banks. 