CS2810 Review Quiz Unit 2

What does the slt instruction do in MIPS?

• Adds the values of two registers and stores the result in the destination register
• Compares two registers and sets the destination register to 1 if the first register is less than the second, and 0 otherwise.
• Shifts the bits of a register to the right by a specified amount
• Multiplies two registers and stores the result in the destination register

addi, lw, and beq are examples of ___

• instructions that access memory

• I-format instructions

• instructions that write to the register file

• instructions where ALUSrc is 1

For addi, the control signal for ALUSrc is ___

• 0

• 1

• doesn't matter

Which instruction has the following combination of control signals?

ALUSrc = 1

MemtoReg=1

RegDest=0

• addi

• lw

• sw

• beq

• slt

In MIPS, there are ___ bytes in a word

• 4

• 8

• 16

• 32

How is data transferred from the main memory to the rest of the processor in MIPS?

• Through the MemtoReg multiplexer

• By sw instructions

• Through the ALU result

• Through the RegDest multiplexer

lw $t2, myVariable is an example of a _____

• R-format instruction

• pseudo-instruction

• core-instruction

• addition instruction

How does the processor compute the target address for load and store instructions?

• The ALU is used to add the base address with the offset specified in the instruction resulting in the target address

• The processor uses the label to compute the correct address in memory

• The branch offset adder is used to add together two addresses to get our target address.

• By using the immediate in the instruction as the target address

What is the function of the 'jr' instruction in MIPS?

• It performs a jump to the address contained in a register.

• It adds two registers and stores the result in a third register.

• It loads a word from memory into a register.

• It stores a word from a register into memory.

Which instruction lets you move the furthest in your program?

• j

• beq

• jal

• jr