Odd message in Shining Force 2

[TheCount]

While hacking Shining Force 2 for the genesis, I used an old savestate to test some stuff, and I found a weird message. Sometimes, when finishing a turn with Sarah or Karna (both mastermonks) I get a "DEF-CON No.0 has been implemented." or "DEF-CON No.1 has been implemented.". Once I even messed around with something in the ROM I can't really remember and I got three or four of those messages consecutively, after the first turn, with numbers 0, 1, 2 and 3 or something like that. I was using the debug cheat in that savestate (though, ironically, I had a pitiful party). Does anyone have any idea what it might mean?

Here's a screenshot: