For the following masked move instruction data, the contents of the destination after the MVM went true would be:
1100 1010 0011 0110 contents of the source
1111 0000 1111 1111 contents of the mask
1010 1101 1010 1010 contents of the destination before MVM went true
A)1100 1101 001 10110
B)1010 1010 1010 1010
C)1111 0000 1111 0000
D)0000 1111 0000 1111

Question

For the following masked move instruction data, the contents of the destination after the MVM went true would be: 
1100 1010 0011 0110 contents of the source 
1111 0000 1111 1111 contents of the mask
1010 1101 1010 1010 contents of the destination before MVM went true
A)1100 1101 001 10110
B)1010 1010 1010 1010
C)1111 0000 1111 0000
D)0000 1111 0000 1111

Quizplus · Accepted Answer

The destination is updated with the source value only when the mask bit is 1. In this case, the mask bits are 1111 0000 1111 1111, so the destination will be updated with the source value in all bits except the 5th and 6th bits. The 5th and 6th bits of the destination will remain unchanged. Therefore, the contents of the destination after the MVM went true would be 1100 1101 0011 0110.

For the Following Masked Move Instruction Data, the Contents of the Destination