Which of the following best characterize by Memory Mapped -I/O?
$A)$ Additional hardware for bus is required to control the IO bus and memory bus.
$B)$ Some of the address space is separated from memory space and assigned them to I/O ports.
$C)$ Common bus is used but to differentiate between memory and I/O different control signal is used
$D)$ None of these
I havenot got this answer to Galvin. Someone plz. give the concept used here .