HW1 15 points total.  2 points per question, except only one point for question
6.
HW2 20 points total.  3 pts for essay questions 1,3,4,5.  2 pts for essay
question 2.  1 point for short answer questions.
HW3 5 points for question 1.  7 and 3 for the two parts of question 2.

PR1. 10 points total.  7 points for screen dump. 2 points for identification of
simplesem instructions that translate the while construct (jumpt, jump, and
labeled statements; take one point off if too many simplesem statements are
identified), 1 point for proof.

HW4.  20 points in total.
2.1.2 0.5 points each to 4 points.
2.2.2 0.5 points each to 4 points.
2.4.1 0.5 points each to 4 points.
2.4.3 1 point each to 4 points.
2.4.4 1 point each to 2 points.
2.4.5 0.5 points each to 2 points.

PR2. 30 points in total. 2.1.1 4 point, 1/2 point per part, 
full credit for (g) with either a report of error or a report 
of what appears when entering the expression
0xAB+123.  3.1.1 7 points in total, 1 point per exercise, except 2 points for
(f). 3.1.2 8 points in total, 2 points per exercise. 3.2.1 12 points (2 per
part).

PR3 27 points in total. 3.3.1 6 points in total, 1 point each. 3.3.2 2 points.
3.3.3 3 points. 3.3.7 3 points. 3.3.11 6 points, 2 points per part. 3.4.1 4
points in total. 2 points off if the solution is not logarithmic in the
exponent. 1pt extra credit for solution that computes x^n. 3.4.3 3 points.