Microprocessor and Computer Architecture20815 marksIsolated I/O and memory mapped I/O
Differentiate between I/O mapped (isolated) I/O and memory mapped I/O.
Differentiate between I/O mapped (isolated) I/O and memory mapped I/O. [5]
--- - I/O devices are given a separate address space from memory. - Special I/O instructions (such as IN and OUT) are used to communicate with I/O devices. - The processor has separate control lines for memory and I/O operations (e.g., M/IO signal distinguishes between the two). - Since I/O and m...