Question

the following transfer statements specify a memory. explain memory operation in each case: 1.R2<-M[AR]
2.M[AR]<-R3
3.R5<-M[R5]​

Answer 1

Answer:

a) Read memory from address register value from R3

b) Value from R3 is stored into memory register  

c) It will firstly read the memory word specified by R5 & then transfer the value into the  

same register R5 this is mostly used in indirect addressing

Explanation:

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Answer 2

Given below are the operations specified by each statement.

Explanation:

• In the statement M[AR], AR represents the address in the memory registers and collectively it means that it represents data at the address AR in memory.
• (1.) R2<-M[AR] means transferring the contents at the address represented by AR in memory into the register represented by R2.
• (2.) R3<-M[AR] means transferring the contents at the address represented by AR in memory into the register represented by R3.
• (3.)(1) R5<-M[R5] means transferring the contents at the address in the register R5 into the register represented by R5.