Question

Advantages and disadvantages of memory mapped i/o and input mapped i/o

Answer 1

Advantages of memory mapped I/O
Inthis case, we will use only one address space.
Only 1 set of read and write instruction will be there.
The instructions used to manipulate memory can be be used for I/O devices also.

Disadvantages
There is no separate IN,OUT and MOV instruction.
In mem mapped I/O the same address can't be assigned to both mem location and I/O devices.