Chapter 4. Port Space Accesses
Prev |  | Next

## Chapter 4. Port Space Accesses

## Port Space Explained

Another form of IO commonly supported is Port Space. This is a range of addresses separate to the normal memory address space. Access to these addresses is generally not as fast as accesses to the memory mapped addresses, and it also has a potentially smaller address space.

Unlike memory mapped IO, no preparation is required to access port space.

Prev |  | Next
Accessing the device | Home | Accessing Port Space