A signed memory refers to a memory that can include both positive or negative numbers. Select whether the memory address should be signed or unsigned. It usually is inadvisable to use larger memory sizes than required, as it may have undesirable effects on your game. If you're trying to change HP and it maxes out in the game at 9999, choose 2 bytes (which has a range of 0 to 65536), etc.
If you're trying to change an energy value which maxes out at 100, choose 1 byte (which has a range of 0 to 255). Choose the smallest range applicable to the value you're trying to change. Select the memory addresses' size for the value you are searching for. Now you can add videos, screenshots, or other images (cover scans, disc scans, etc.) for Pokemon Black Version 2 (DSi Enhanced) (U) (frieNDS) to. The sequel to Pokemon Black, this game has many new adventures and challenges for fans of the series.
This manual explains the 'raw' or 'internal' cheat system in desmume.