// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/12/MemoryTest/Main.jack

/** Test program for the OS Memory class. */
class Main {

    /** Performs various memory manipulations. */
    function void main() {
        var int temp;
        var Array a, b, c;
        
        do Memory.poke(8000, 333);       // RAM[8000] = 333
        let temp = Memory.peek(8000);
        do Memory.poke(8001, temp + 1);  // RAM[8001] = 334
        
        let a = Array.new(3);            // uses Memory.alloc
        let a[2] = 222;
        do Memory.poke(8002, a[2]);      // RAM[8002] = 222
        
        let b = Array.new(3);
        let b[1] = a[2] - 100;
        do Memory.poke(8003, b[1]);       // RAM[8003] = 122
        
        let c = Array.new(500);
        let c[499] = a[2] - b[1];
        do Memory.poke(8004, c[499]);     // RAM[8004] = 100
        
        do a.dispose();                   // uses Memory.deAlloc
        do b.dispose();
        
        let b = Array.new(3);
        let b[0] = c[499] - 90;
        do Memory.poke(8005, b[0]);       // RAM[8005] = 10
        
        do c.dispose();
        do b.dispose();
        
        return;
    }
}
