Bit

Always specify the bits of your cheat codes. There are memory address that use specific bits and if you enter the wrong bit, the cheat will overwrite the unrelated address corrupting your savedata.

8bit:

$0000 00000000 000000xx

16bit:

$0100 00000000 0000xxxx

32bit/Float:

$0200 00000000 xxxxxxxx

Note: Floating point values are always 32bit.