Why is the checksum value generated by the Quartus II software programmer different than the checksum value generated by the Tcl checksum command? - Why is the checksum value generated by the Quartus II software programmer different than the checksum value generated by the Tcl checksum command? Description The checksums generated by the Quartus® II software and the Tcl checksum command are different because they are calculated using different algorithms. The checksum generated by the Quartus II software is calculated using a simple summation of the bytes of the programming/configuration data. The Tcl checksum command uses a different method of calculation (CRC-32 or Adler32) and calculates the checksum on the entire file. Related Articles Is the checksum provided by Altera ® tools a good way to represent a unique signature of the programming data in an Altera device? Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']