Unused addresses

Page	Byte	Address	Length	Description
209	93	D15D	32	Object List
229	196	E5C4	2688	Pixel Buffer
240	68	F044	336	Attribute Buffer
241	148	F194	108	Unused
242	0	F200	1536	Reversed Shift Tables
248	0	F800	256	Unused
249	0	F900	256	Reverse Bits Table
250	0	FA00	1536	Shift Tables