: 04 00 0000 74 12 80 FC FA
   |  |    | -----------  |
   |  |    |      |       +--- The checksum
   |  |    |      +----------- The four data bytes (they match the assembler output)
   |  |    +------------------ Address of the first byte (0000 in our example)
   |  +----------------------- Record type (00 = normal data)
   +-------------------------- Number of data bytes in this record