GATE CSE 1987 | Question: 2b

Question

State whether the following statements are TRUE or FALSE:

Data transfer between a microprocessor and an I/O device is usually faster in memory-mapped-I/O scheme than in I/O-mapped -I/O scheme.

Answer 1

True
it will take extra time in IO mapped IO because of control signal.

Answer 2

Answer is false as I/O mapped-I/O scheme is hardwired to the processor and its faster than mmio scheme.

Comments

Given answer is wrong.Memory mapped is faster than IO mapped.

source -:https://en.wikipedia.org/wiki/Memory-mapped_I/O