Quiz submission record for quiz5-1-2 at Tue Jul 20 10:24:04 2004:

Your Answer for Question 1:
c5 = g4+c4.p4
   = (a4.b4) + c4. (a4+b4)
c4 = g3+ c3.p3
   = (a3.b3) + c3. (a3+b3)
c3 = g2+c2.p2
   = (a2.b2) + c2. (a2+b2)
c2 = g1+ c1.p1
   = (a1.b1) + c1. (a1+b1)

c5 = (a4.b4) + c4. (a4+b4)
   = (a4.b4) + ((a3.b3) + c3. (a3+b3)).(a4+b4)
   = (a4.b4) + ((a3.b3) + ((a2.b2) + c2. (a2+b2)). (a3+b3)).(a4+b4) 
   = (a4.b4) + ((a3.b3) + ((a2.b2) + ((a1.b1) + c1. (a1+b1)). (a2+b2)). (a3+b3)).(a4+b4) 

Your Answer for Question 2:
ALUsrc is a signal to control the mux
which will choose between the value read from
the second register or sign-extended immediate
to feed into the ALU.

Your Answer for Question 3:
X's mean don't care.
~a + a.~c
= ~a.(~b.~c + ~b.c + b.~c + b.c) + a.~c.(b + ~b)
= ~a.~b.~c + ~a.~b.c + ~a.b.~c + ~a.b.c + + a.~c.b + a.~c.~b

This table is complete.


Your unique submission ID is quiz5-1-2-cs61c-eb-1090344244-1629.