Nightshade: Unused RAM at F195

F195: Unused

Neither read nor written in a run measured by stage 1 from the start through the menu, play, a new cell and more play (every access from BUFFER up recorded in SkoolKit's simulator): the snapshot's zeros. Nothing in the code addresses it: the attribute buffer ends below it and the tables start at MIRROR_TABLES.
UNUSED_F195	F195	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1A1	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1AD	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1B9	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1C5	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1D1	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1DD	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1E9	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	F1F5	DEFB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00