DS80C400 C Libraries: TBIN2 File Format

A TBIN2 file is made up of multiple TBIN2 records, terminated by the end-of-file. It is very similar in structure to the TBIN file format, except that there is a 1-byte version number and the CRC16 precedes the data. The TBIN2 file format is understood by the Netboot algorithm of the DS80C400. Following is a high level description of a TBIN2 file...

       [ TBIN2 Record ]
       [ TBIN2 Record ]
       [      ...     ]
       [ TBIN2 Record ]
       [  end of file ]
    

Note that Netboot is primarily intended for manufacturing and development, and not for deployed systems. Current DS80C400 parts require a deviation from the TBIN2 format specification for files containing over 64KB of data. To correct for this problem, use the following tools: FIXME-FIXME-FIXME-FIXME

A TBIN2 record has a 1 byte version number, 3 bytes of starting address, 2 bytes of (length-1), 2 bytes of CRC16, and [length] bytes of data. Therefore, a TBIN record can carry a maximum of 64Kbytes of data to load, plus its 8 bytes of overhead.

The version number refers to the version of the TBIN2 record formant, and should be 1.

       [ VERSION ]
       [ A_low ][ A_high ][ A_xhigh ]
       [ L_low ][ L_high ]
       [ CRC_low ][ CRC_high ]
       [ D1 D2 D3 ... D(L+1) ]
    

For example...