1. What is the difference in operation between a LOAD x and a LOADI x instruction?
a. The LOAD loads the value at address x to the AC; the LOADI loads the value found in the location addressed by the value in x to the AC
b. There is no difference if x is the same
c. The LOAD loads the value at address x to the AC; the LOADI loads the value x to the AC
d. LOAD loads the value x to the AC; LOADI loads the value found at x to the AC
e. Don't know/No answer

2. Consider the next MARIE instructions: Load, Add, Store, Subt, Input and Output. Which of the following MARIE registers is not always used in the FDE cycle of the above instructions?
a. MAR
b. InREG
c. PC
d. AC

3. Which MARIE instruction is being carried out by the micro-operations that follow?
	MAR <- X
	MBR <- M[MAR]
	AC <- MBR
a. Jump X
b. Don't know/No answer
c. Load X
d. Add X
e. Store X

4. Which MARIE instruction is being carried out by the micro-operations that follow?
	MAR <- X
	MBR <- M[MAR]
	AC <- AC + MBR
a. Add X
b. Load X
c. Jump X
d. Don't know/No answer
e. Store X

5. Which of the following best describes the composition of a 32-bit register.
a. 32 D flip-flops
b. 32 SR flip-flips
c. 16 D flip-flops and 16 SR flip-flops.
d. Don't know/no answer
e. 64 D flip-flops.
f. 32 D flip-flops and 32 SR flip-flops

6. Which MARIE instruction is being carried out by the microoperations that follow?
	MAR <- X
	MBR <- AC
	M[MAR] <- MBR
a. Load X
b. Store X
c. Jump X
d. Add X
e. Don't know/No answer

7. Which of the following pair of values usually make up an instruction in a simple instruction set?
a. OpCode, Address
b. Don't know/No answer
c. Operation, Instruction Length
d. Operation, FDE
e. Operand, Address

8. Consider the following MARIE code. The code starts at address 000 in hexadecimal (ORG 000): that is the first instruction is saved at address 000.
After the execution of this code what is the value (in decimal) stored in the OutREG register?
		ORG 000
If,     Load X
		Subt Y
		Skipcond 400
		Jump Else
Then,   Load X
		Add Z
		Output
		Jump Endif
Else,   Load X
		Subt Z
		Output
Endif,  Halt
X,      Dec 7
Y,      Dec 5
Z,      Dec 2
		END
a. 3
b. 1
c. 5
d. Don't know/No answer
e. 7

9. Which MARIE instruction is being carried out by the micro-operations that follow?
	MAR <- X
	MBR <- M[MAR]
	AC <- AC - MBR
a. Subt X
b. Jump X
c. Store X
d. Load X
e. Don't know/No answer

10. Which MARIE instruction is being carried out by the microoperation that follows?
	PC <- X
a. Jump X
b. Don't know/No answer
c. Store X
d. Add X
e. Load X