Write any three difference points between Memory Mapped I/0 and
I/O Mapped I/0 Addressing Scheme.
|Memory mapped I/O||I/O mapped I/O|
|1||I/O is assigned to the separate address space of memory.||I/O is assigned with same address of memory.|
|2||Separate control signal is not required.||It is required like IO/M.|
|3||Memory space is reduced due to insertion of I/O address.||Full memory space can be used.|
|4||It requires 16-bit address bus||It uses 8-bit address bus only.|
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Write any three difference points between Memory Mapped I/0 and I/O Mapped I/0 Addressing Scheme. Concept: Introduction to Microprocessors and Organization of 8085.