In which type of I/O addressing does a read or write operation trigger a dedicated I/O bus to select the appropriate device?
A) memory-mapped I/O
B) dedicated I/O
C) port-mapped I/O
D) triggered I/O

Question

Quizplus · Accepted Answer

Port-mapped I/O (also known as isolated I/O) uses a special class of CPU instructions specifically for accessing the I/O devices, and it often involves a separate I/O bus for selecting the appropriate device.

In Which Type of I/O Addressing Does a Read or Write