Nightshade: Unused RAM at 5B00

5B00: The printer buffer, unused

Zeros, as the ROM left them. The loader's routine sits in the middle of the buffer (LOADER); nothing else uses it.
PRINTER_BUFFER	5B00	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B08	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B10	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B18	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B20	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B28	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B30	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B38	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B40	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B48	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B50	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B58	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B60	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B68	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B70	DEFB $00,$00,$00,$00,$00,$00,$00,$00
	5B78	DEFB $00,$00,$00,$00,$00,$00,$00,$00