Within the game's coding is a string under the name "PFLOYD" that maintains the integrity of the game's save files. This string appears in the English and Japanese ROMS under the offset 6F7A and needs to be present at AA00, AA40, and AA80 in RAM (along with two checksums) in order for save files to remain functional; if the string is not present in one of these RAM files, the corresponding save file will be wiped, even if the two checksums are cleared.

The name of the string, "PFLOYD", appears to be a reference to the British progressive rock band Pink Floyd, who was active from 1965 to 1996, disbanding just a year after Donkey Kong Land's release.
Contributed by game4brains