Tuesday, November 24, 2009 7:46 PM,

A student writes:



	 Professor, I was wondering what the mask was overwritten with for number 4.
	
	 <<name withheld to protect the student who wants to know what 
	 overwrote>>
 


I guess I could tell the student what the mask was overwritten with.
Or, I could provide an opportunity for the student to get ready for the final 
exam by saying: Please go through the program line by line, branch by branch 
until you get to the point where the mask is overwritten.  
You should then have the answer to what the mask was overwritten by.

If you can not do this, you have work to do between now and the final exam.  
Please discuss this in your study group.  If you are all unable to do it, 
please see a TA (or, if that does not work, see me) to help you go through the 
program line by line.

Have a great Thanksgiving break.

Yale Patt