Quiz
Question
(5 Points):
Explain each of the following two concepts:
Memory Mapped I/O vs Direct Memory Access (DMA)
p578, Memory Mapped I/O,
In a system with memory-mapped I/O, a block of addresses
in the address space is reserved for communicating with I/O
devices.
Each device is associated with one or more of these addresses
when it is attached to the bus.
p579, DMA,
process whereby a device performs a read or write memory
transaction on its own, without any involvement of the CPU.