Homework # 4, 


			Final program due before class on Wednesday, Feb 6.


Submission instructions:  name your final .asm file with your three initials
followed by tpm.  For example, mine would be rsftpm.asm.

Email your properly named asm file to ee347Lsdsu@gmail.com before the deadline.



Design (a flowchart may be required for lab on Thursday, but diagrams
or pseudo-code will be sufficient for this assingment), code, simulate, 
test, and debug a program for triple- precision multiplication.  See 
Exercise 2.20, but use the address storage scheme discussed in class 
for the quadruple-precision addition and subtraction.
(reserve space for the product starting at 0000, then the multiplicands.)
Use the assembly directives (from the first half of chapter 2) so that it
is easy to change, for example, where the product is stored.

You may start with the double precision code from 
example 2.10 (which is in soft-copy form on your CD that came
with your book).  You should document that you took that code, and
your code should not use ADCA.  For the simulation, you should load
the stackpointer.  You should comment this statement out when running
under Buffalo Monitor in lab (that is, do not load the stack pointer
in lab for the next two weeks)

Again:  Do NOT USE the ADCA command (use ADCB instead).


I want you to hand in your pencil and paper design work in class on Wednesday 
(flowcharts, diagrams, pseudo-code, anything and everything you used to
come up with the algorithm), to submit (via email, as described above)
your *.asm file.  I  might also  ask you to mail in a trace (the version 
that Sim68 will save for you).

This assignment will also serve for most of your pre-lab for next
week, since you will be assigned to run the triple-precision multiply
in lab.  

You will re-use this code for a later lab, so write good, clean,
well-documented code!!!!