Educative Site Free Online Academic Courses Tutorials, Books with enough questions and answers
Difference between Isolated I/O vs Memory mapped I/O
| Isolated I/O | Memory Mapped I/O |
| Isolated memory I/O is considered as a separate domain with comparison of memory | Considered as a part of memory |
| For application address space complete 1 MB memory is allowed | It takes only some part of the memory not the complete 1 MB memory |
| To map with other I/O operations, separate operations are provided | To map with other I/O operations, no separate operations are provided |
| The device register is 8 bit | The device register is 16 bit |