Instruction set

What is the purpose of the instruction Load R2, LOC?

• To store a value from register R2 into memory location LOC.
• To compare the value in register R2 with the value at memory location LOC.
• To increment the value in register R2 by the value at memory location LOC.
• To load a value from memory location LOC into register R2.

What value is loaded into R3 by the instruction Load R3, #10?

• 10
• 20
• 15
• 5

What does the instruction Add R4, R2, R3 do?

• Adds R4 and R3 and stores in R2

• Adds values in R2 and R3 and stores the result in R4

• Adds R2 and R4 and stores in R3

• Adds the value of R2 to LOC

What is the final effect of the instruction Store R4, LOC?

• Stores the value of LOC into R4

• Stores R2 into LOC

• Stores the result of addition into LOC

• Stores 10 into LOC

Which register temporarily holds the final result of the addition?

• R4

• R3

• R2

• LOC

What is the effect of the instruction Add R4, R2, R3?

• Adds the values in R2 and R3 and stores the result in R4

• Adds the value in R4 to R2 and stores it in R3

• Stores the sum of R2 and R3 into memory location LOC

• Stores the value of R2 into R4

What does the instruction Sub R1, R2, R3 do?

• Compares the values in R2 and R3 and sets a flag in R1.

• Adds the values in R2 and R3 and stores the result in R1.

• Stores the value of R2 into R1.

• Subtracts the value in R3 from R2 and stores the result in R1.

What kind of value is #10 in the instruction Load R3, #10?

• Address

• Register

• Immediate value

• Memory location

What type of operation is performed by Store R4, LOC?

• Read from memory

• Write to memory

• Add in memory

• Load to register