EE 361 LAB 1
                           MC68HC11 Introduction

References:    Software and Hardware Engineering: Motorola
               M68HC11 chapter 5, MC68HC11 Programming
               Reference Guide

Pre-Lab:  Read Chapter 5:  Buffalo Monitor and Debugger

Schedule: Week of 9/8: Do the lab
          Week of 9/15: Hand in the memo report

1    Using the Buffalo Monitor, assemble the following program to be at $C000.  After it is in and you
     have checked that it is OK, run the program. (Note:  Use <Ctrl-A> to get out of the ASM mode.)

                                              Enter in ASM       What's in Memory
     Program        Comment                   ASM C000        Location:   Contents
     LDAA  ':       Load ASCII code for :     LDAA #3A        c000:       86 3a
     JSR   OUTA     Print it on terminal      JSR  FFB8       c002:       bd ff b8
     JSR   INCHAR   Get a new character       JSR  FFCD       c005:       bd ff cd
     LDAB  #5       Initialize loop counter   LDAB #5         c008:       c6 05
LOOP JSR   OUTA     Print the character       JSR  FFB8       c00a:       bd ff b8
     DECB           Decrement loop counter    DECB            c00d:       5a
     BNE   LOOP     If counter <> 0, repeat   BNE  C00A       c00e:       26 fa
     SWI            Return to the monitor     SWI             c010:       3f
                                              <Ctrl-A>
     1.1   What does this program do?
     1.2   Change the ":" prompt to a "$".
     1.3   Change the loop counter so it prints exactly 15 of them.

2    Using elements of this program and other monitor utility routines, write, assemble and demonstrate a
     program which conforms to the following design:

                  
     Input character from the keyboard  
     Add 1 to the character
     Print +1= 
     Print the character to which 1 was added
     End program 
 
     Example.  If you had entered the character A, the program display should show A+1=B. 
     Demonstrate the program to your lab instructor.

3    Memo Report Due week of 9/15:
     1.    Define the following terms:  a) Breakpoint  b) Branch address, c) Buffalo Monitor
     2.    What Buffalo Monitor command do you use to display memory?
     3.    How do you use the Buffalo Monitor to set a breakpoint?
     4.    Explain in detail what each line of code does in the program in 2.  Give the hexadecimal
           code for each instruction in the program.

4    Grading:  Program demo 5 points, memo report 20 points.