Question: For these programming exercises, use only those instructions that have been discussed so far in these notes: add lw sll addi mfhi sra addiu mflo

For these programming exercises, use only those instructions that have been discussed so far in these notes:

add	lw	sll
addi	mfhi	sra
addiu	mflo	srl
addu	mult	sub
and	multu	subu
andi	nor	sw
div	or	xor
divu	ori	xori
lui

USING MIPS

Evaluate the expression:

17xy - 12x - 6y + 12

Use symbolic addresses x, y, and answer. Assume that the values are small enough so that all results fit into 32 bits. Since load delays are turned on in SPIM be careful what instructions are placed in the load delay slot.

Verify that the program works by using several initial values for x and y. Use x=0, y=1 and x=1, y=0 to start since this will make debugging easy. Then try some other values. As an option, follow the precaution for multiplication, as above.

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