[ASM & Hex] Limiter for moves and abilities...

Hi there,
I just wanted to know if there is any limiter value to the moves, abilites in the rom...
,
,
for eg in an fire red rom I have 400 moves.
and in any pointer there is something like hex and reverse of that no.of moves...
and when i add 100 moves then I have a total of 500 moves.
then in the previous pointer there will the hex and reverse of 500...
.
.
does there exists such value of limiter for moves and abilities table???

not really iirc
moves have a hardcoded limit (512 including index 0x0), but this has been circumvented with the triple-byte learnsets
abilities just require a check for the index in the necessary part of the battle system