[ASM & Hex] Need to know buffer offsets

I'm doing some ASM hacking and I need to print out some buffered strings. Can anyone tell me where are the RAM offsets of each buffer (e.g buffer "FD 02" is at 0x2021CD0), and whether these buffers have a built-in usage (e.g [buffer6] is for rival's name) or are free to use?

I'm hacking a FR ROM. (But anyone who can tell me the Emerald or Ruby offsets is also welcome.)