Full and Partial address decoding

Question

Compare and contrast the full address and Partial address decoding?

Answer 1

a) Full address decoding

1. All the higher address lines are decoded in order to select memory or I/O device.
2. More hardware is needed in order to design the decoding logic.
3. Large cost for decoding the circuit.
4. No several addresses.
5. Used within large systems.

b) Partial address decoding

1. Few higher address lines are decoded in order to select memory or I/O device.
2. Hardware needed to design the decoding logic is less and it can be eliminated sometimes.
3. Less cost for decoding the circuit.
4. It has the disadvantage of multiple addresses.
5. It is used in the small systems.