The applet contained below is a demonstration of the IBM Virtual Machine model. When you click on the Start button, the applet will begin running. The instruction boxes contained in the VM #2 box represent the instructions the user of VM #2 is attempting to execute. The numbers below each "box" represent the locations in memory that each user is allowed to access. As each instruction is entered, the box will light up green if the instruction is legal or red if illegal. Each instruction will show up in the CP and will once again be green for legal, red for illegal. At the completion of each instruction, you will see a message in the "user's screen" telling the user the result of each operation. Please scroll down to the bottom of the browser window and click Start to begin. If you wish to run the demonstration again, please click Clear then Start.