public void calculateChecksum(IPatch ip,int start,int end,int ofs) {
public void calculateChecksum(Patch ip,int start,int end,int ofs) {
    public void calculateChecksum(IPatch ip,int start,int end,int ofs) {    	    Patch p = (Patch)ip;    	    int i;        int sum=0;                //   System.out.println("Checksum was" + p.sysex[ofs]);        for (i=start;i<=end;i++) {            sum+=p.sysex[i];        }        p.sysex[ofs]=(byte)(sum % 128);        // System.out.println("Checksum new is" + p.sysex[ofs]);            }