return bankDriver.getPatch(bankData,col*bankDriver.getNumPatches()/bankDriver.getNumColumns()+row);
int i = col*bankDriver.getNumPatches()/bankDriver.getNumColumns()+row; return bankDriver.getPatch(bankData, i);
    public Patch getPatchAt(int row, int col)    {        return bankDriver.getPatch(bankData,col*bankDriver.getNumPatches()/bankDriver.getNumColumns()+row);    }