Quiz submission record for quiz5-1-2 at Tue Jul 20 10:41:04 2004:

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

Your Answer for Question 2:
When it deasserted, the second ALU operand comes from the second regisiter file output. When it asserted the second ALU operand is the sign-extended, lower 16 bits of the instruction.

Your Answer for Question 3:
X means that it doesn't matter about output. so, sum-of-products is 
o = ~a | ( a & ~c )
~o = a & c


Your unique submission ID is quiz5-1-2-cs61c-em-1090345264-865.