Memory Address Space and Data Organization

Question 1

1. The 8086 microcomputer supports 1 Mb of external memory.

Answer 1

2. Each memory location is Byte Addressable, i.e. one byte of data can be stored at every single location.

Question 2

3. The entire memory in 8086 is divided into two memory banks: odd bank & the even bank.

Answer 2

4. Even addressed bytes range from 0H through FFFFEH

Question 3

5. High-bank holds odd addressed bytes ranging from 1H through FFFFFH

Answer 3

6. Input/Output: 16-bit data bus, D15 Through D0.

Question 4

7. • D7-D0 even addressed byte accesses

Answer 4

8. • D15-D8: odd addressed byte accesses