1. Quiz (Representative of what might appear on a test, see posted sample tests.)
Instruction formats and addressing modes

2. 1. Identify the addressing mode of each of the following hypothetical machine instructions.
MOV R1, R2
LD R2, [R3]
LD R2, [100]
LD R2, 100[R3]
MOV R2, 6
B. Wilkinson Slides2-3Quiz March 18, 2015

3. 2. How many references to memory are needed for each of the following hypothetical instructions?
ADD [100],[100],[100]
ADD [100],[100],R2

4. 3. Why are registers used in a processor?

5. 4. What does the hypothetical assembly language instruction:
ADD R1, [100]
do?

6. 5. Which machine instruction addressing mode would be suitable for the high level language statement:
x = x + 25;
where x is declared as an integer (i.e. int x;).
Make but state any assumptions.

7. 6. Name the machine instruction addressing mode that would be appropriate for implementing the high level
language instruction:
x = y;
if x and y are held in registers. Give an example

8. 7. Which machine instruction addressing mode would be appropriate for implementing the high level language statement:
A[i] = x;
where A is declared as:
int A[100];
and x and i are held in registers? Give an illustrative example.