[ASM & Hex] Battle Counter Incrementation

I'm looking to add new moves to fire red, some of which include turn counters. I was wondering if anyone knows the location (for fire red, preferably) in the battle engine that the game decreases counters each turn for moves like reflect, etc?

Thanks for your help.

not sure about individual counters, but an easy work around would be to hook a routine around 08013CB0, where the battle turn counter increases. Hope this helps!