Assignment 1: Object Code (Due: Th, April 3)

Write an interpreter for MINI-MACHINE programs. The invocation to the interpreter should provide the name of a program file and the name of a data file.

Program Files

A MINI-MACHINE program file should consist of

• An integer value BR specifying the length of the program.
• The code of the program made up of BR integer values.

The Interpreter

The interpreter should be a program that

• Reads the value of the base register BR
• Loads a MINI-MACHINE program into MEM[0], MEM[1], MEM[2],$\dots$, MEM[BR-1]
• Executes the program.

The execution starts by initializing LC to zero and then repeatedly doing the following.

• Assign to variables OPR, OP1, OP2, and OP3 the values of MEM[LC], MEM[LC+1], MEM[LC+2], and MEM[LC+3], respectively.
• Increase LC by 4.
• Execute the operation code OPR on the operands OP1, OP2, and OP3.

Requirements

• Write your code in Java, C++, or C, unless you know how to handle LEX and YACC with other languages (see lab 6).
• Use the ‘submit c756aa lab1 file1 file2 ...’ command to submit your lab.
• Assignments are due at midnight of due date.
• KEEP the files of your program until the end of the course, since you will need it again later or in the project.