Which of the following is correct regarding Memory-Mapped I/O? Select one:
a. Memory-Mapped I/O is more complex and inflexible in handling I/O operations.
b. The same memory reference instructions (read/write) can be used for I/O transfers. c. There are separate input and output instructions to handle I/O data transfers.
d. There is a separate memory and I/O address space.
e. The available memory address space is larger when using Memory-Mapped I/O.

MSP430

Explanation:

MSP430 devices have up to 12 digital I/O ports implemented. Each port has eight I/O pins. Every I/O pin can be configured as either input or output, and can be individually read or written to. Ports P1 and P2 have interrupt capability. MSP430F2xx, F5xx and some F4xx devices feature built-in, individually configurable pull-up or pull-down resistors.

you need to be a high enough rank

i don't think so. although it would be nice. i am pretty sure that was an option an update or two ago. i guess they want you to stay 14 forever. haha.