CSCI 201 Fall 2003

Solution to Short Assignment 1: Assembly Level Programming Using Little Man Computer

• Example Solution to Part 1

  • Problem statement:
    Write a program that calculates:
    

    OUT = IN1 + IN2 - IN3
    

  • Example solution:

    
             Location    Instruction   Description
                00	       500           input (IN1)
    	    01         299           store 99 
    	    02         500           input (IN2)
    	    03         399           add 99
    	    04         299           store 99
    	    05         500           input (IN3)
    	    06         298           store 98
                07         199           load 99
                08         498           subtract 98
    	    09         600           output
    	    10         700           halt      
    
    

  
  

• Example Solution to Part 2

  • Problem statement:
    Write a program that outputs the even numbers from 0 to 10 in ascending order.

  • Example solution:

    
             Location    Instruction   Description
                00	       500           input (the value 0)
                01         600           output (the value 0)
                02         500           input (the value 2)
                03         299           store 99
                04         600           output (the value 2)      
                05         399           add 99
                06         600           output (the value 4)      
                07         399           add 99
                08         600           output (the value 6)      
                09         399           add 99
                10         600           output (the value 8)      
                11         399           add 99
                12         600           output (the value 10)      
                13         700           halt