package lecture11;

public class Main {
	
	public static void unpackShort(short num) {
		// regard num as upper lower where they 
		// mean the obvious thing
		int lower = num & 0xFF;  // upper stuff is 0
		num = num >> 8;
		int upper = num & 0xFF;
		
		// send this out via FLAP
		//  send upper first, then lower
	}
	
	public static void unpack(int num) {
		//
		//  ____________________________
		//  | b0  |  b1  |  b2  |  b3  |   == num
		//  ----------------------------
		//
		//   << high end      low end >>
		//
		// so num == 1  ==>  b0==0, b1==0, b2==0, b3==1
		//
		int b0=0, b1=0, b2=0, b3=0;
		
		//
		// set b3 as the lowest byte of data from num?
		//
		b3 = num & 0xFF;
		num = num >> 8;
		b2 = num & 0xFF;
		num = num >> 8;
		b1 = num & 0xFF;
		num = num >> 8;
		b0 = num & 0xFF;
		
		System.out.println("b0 = " + b0);
		System.out.println("b1 = " + b1);
		System.out.println("b2 = " + b2);
		System.out.println("b3 = " + b3);
		
		// if num were a FLAP seq number
		// send out b2 and then b3
	}
	public static void main(String[] args) {
		int num=0x0102030F;
		unpack(num);
		
	}

}