Explanation: This is used to extend the size of the register. 13. The instruction, ADD R1,R2,R3 is decoded as _______ .
A. R1<-[R1]+[R2]+[R3]
B. R3<-[R1]+[R2]
C. R3<-[R1]+[R2]+[R3]
D. R1<-[R2]+[R3]
Answer:D
Explanation: This is used to extend the size of the register. 13. The instruction, ADD R1,R2,R3 is decoded as _______ .
A. R1<-[R1]+[R2]+[R3] B. R3<-[R1]+[R2] C. R3<-[R1]+[R2]+[R3] D. R1<-[R2]+[R3]
Explanation: None. [/expand]