Just thinking ..... > That would be a maximum of 4 subtracts, to find > 256 - 300, 301 - 400, 401 - 500 and > 501 The boundaries are at x55, not x00, so that's 3 max wbr -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist