





            RADFAX2 FILE STRUCTURE:
            
            The picture files are stored in memory as blocks of 12
            lines, with each line containing 960 pixels each. There
            are 8 pixels stored in each byte, so each line takes up
            120 bytes of storage. The top lines of each picture are
            stored first (lowest memory locations), and the left most
            pixels of each line are also stored before the right most
            pixels. The top left most pixel of each picture is stored
            in the most significant bit (msb) of the first byte. If a
            bit is set (logic 1) then that pixel is white, if a bit
            is logic 0 then that pixel is black.
            
            The first byte of each .FAX file will tell you how many
            blocks of 12 lines is  stored in the file. So the file
            should unpack into No. of Blocks X 12 lines X 120 bytes.
            Bytes of 0FF HEX (or 8 white pixels) are quite common and
            usually come in sequences so they are compressed into a 2
            byte pair, first byte is 0FF hex and the next byte will
            tell you how many bytes of 0ff hex came in the sequence.
            So the pair 0ff 010 hex should unpack into 16 (decimal)
            bytes of 0ff hexs or 16 X 8 white pixels. If a byte is
            other than 0ff hex then it is just stored to disk
            untouched.








































