EMEMW

query/update the endat memory:
   EMEMW <mrs code> <addr> <data>
   <mrs code> - EnDat memory page. Range: 0 to 255, (mrs & 0x40) =0, (mrs & 0xA1)<>0. According to MRS table in the ENDAT paper, page 8.
   <addr>     - EnDat memory location. Range: 0 to 255.
   <data>     - optional. If specified, write operation is performed. If not specified, read operation is performed. Range: 0 to 65535.
This command is password protected.