Question

To improve the efficiency of an MSP430 based microcontroller, for one register

(a) there is only one value for all addressing modes

(b) there are two values for each addressing mode

(c) there are 2 values for four addressing modes

(d) there are 4 values for four addressing modes

I had been asked this question in class test.

The doubt is from Architecture in section MSP430 Microcontroller of Microcontroller

Answer 1

Right choice is (d) there are 4 values for four addressing modes

Explanation: In MSP430, there are namely 4 addressing modes. So the main advantage of this controller( which basically increases its efficiency )is that for one register their exists 4 different values for 4 different addressing modes of the controller.