;;; $8000: Debug. Tiles - palette viewer ;;;
;;; $9000: Unused. Tiles - solid colour ;;;
;;; $9400: Tiles - enemy $E13F (Ridley) ;;;
;;; $B400: Tiles - enemy $E1BF (Ridley explosion) ;;;
;;; $B800: Tiles - Ridley's ribs and claws ;;;
;;; $BA00: Tiles - enemy $E23F (Ceres door) ;;;
;;; $C000: Tiles - escape timer numbers ;;;
;;; $C400: Tiles - Ceres door - elevator room ;;;
;;; $C800: Tiles - enemy $DE7F (Draygon) ;;;
;;; $E800: Tiles - enemy $EC7F (Mother Brain body) ;;;
;;; $EE00: Free space ;;;