ram_buffer.h
games/tbs/include/ram_buffer.h on GitHub
Macros, without a comment: Ram_MapCellBuffer, Ram_DecodeBuffer, Ram_MapBlocks, Ram_MapCollision, Ram_BgTileBuffer, Ram_ActorSpriteSlots, Ram_SoundMixer, Ram_IwramHeapEnd, Ram_FrameWaitStackTop, Ram_BgScroll, Ram_VramBlockCache, Ram_WorkSlot, Ram_BgScroll, Ram_VramBlockCache, Ram_WorkSlot, Ram_MapWork, Ram_CameraWork, Ram_EventWork, Ram_DisplayWork, Ram_ActorEffectWork, Ram_Disp, Ram_EffectWork, Ram_SceneMapStateOffset.