Quiz submission record for quiz5-1-2 at Mon Jul 19 23:35:40 2004:

Your Answer for Question 1:
c5 = g4 + (p4 * g3) + (p4 * p3 * g2) + (p4 * p3 * p2 * g1) + (p4 * p3 * p2 * p1 * g0) + (pr * p3 * p2 * p1 * p0 * c0)

[Carry-lookahead adder]

Your Answer for Question 2:
It determines the second operand of ALU. When it's deasserted, it's the second register file output, and when it's asserted, it is the sign-extended lower 16 bits from the instruction.

Your Answer for Question 3:
X's in truth tables mean that these are "don't-care" terms. It means that the output is independent of this particular input.
Some-of-products expression for above truth table is:
o = !a + a!c
The table is complete. It shows the outputs of all eight possible combinations of three inputs.


Your unique submission ID is quiz5-1-2-cs61c-ew-1090305340-3008.