private void constrain() {
BigInteger offset = new BigInteger(Integer.toString(addressSize * (numUsableRows)));
BigInteger endVal = startVal.add(offset);
if (endVal.compareTo(scrollBar.getMaximumHP()) > 0) {
startVal = scrollBar.getMaximumHP().subtract(offset);
endVal = scrollBar.getMaximumHP();
scrollBar.setValueHP(startVal);
model.fireTableDataChanged();
}
}
/** Makes the given address visible somewhere in the window */
public void makeVisible(Address addr) {
BigInteger bi = addressToBigInt(addr);
scrollBar.setValueHP(bi);
}