Memory map

Page	Byte	Address	Description
64	0	16384	Loading screen
91	0	23296	Unused
95	0	24320	Background Reference
95	1	24321	Unused
95	2	24322	Background screen buffer
95	16	24336	Background address buffer
95	34	24354	Change Background
95	128	24448	Creates Background Image
96	16	24592	Unpack Background Attribute Data
96	43	24619	Background 1 Address References
96	61	24637	Background 2 Address References
96	79	24655	Background 3 Address References
96	97	24673	Background 1 Attribute Data
97	2	24834	Background 1 Positioning Data
97	87	24919	Background 1 Positioning Data
97	217	25049	Background 1 Positioning Data
98	77	25165	Background 1 Positioning Data
98	106	25194	Background 1 Tile Data
100	138	25738	Background 1 Tile Data
104	90	26714	Background 1 Tile Data
106	226	27362	Background 1 Tile Data
107	130	27522	Unused
107	131	27523	Background 2 Attribute Data
108	75	27723	Background 2 Positioning Data
108	121	27769	Background 2 Positioning Data
108	247	27895	Background 2 Positioning Data
109	121	28025	Background 2 Positioning Data
109	174	28078	Background 2 Tile Data
110	150	28310	Background 2 Tile Data
114	14	29198	Background 2 Tile Data
118	6	30214	Background 2 Tile Data
119	102	30566	Background 3 Attribute Data
120	79	30799	Background 3 Positioning Data
120	147	30867	Background 3 Positioning Data
121	16	30992	Background 3 Positioning Data
121	145	31121	Background 3 Positioning Data
121	177	31153	Background 3 Tile Data
123	177	31665	Background 3 Tile Data
125	9	32009	Background 3 Tile Data
127	57	32569	Background 3 Tile Data
128	0	32768	Shadow Buffer
136	0	34816	Routine at 8800
136	51	34867	Routine at 8833
136	152	34968	Routine at 8898
138	48	35376	Routine at 8A30
138	209	35537	Routine at 8AD1
139	210	35794	Player 1 Controls
139	212	35796	Player 1 Redefined Keys
139	230	35814	Player 2 Controls
139	232	35816	Player 2 Redefined Keys
139	250	35834	Player 1 Default Keys
140	12	35852	Player 2 Default Keys
140	30	35870	Sinclair Joystick #2
140	48	35888	Sinclair Joystick #1
140	66	35906	Kempston Joystick
140	84	35924	Game Settings
140	219	36059	Game Control Settings
141	153	36249	Game Settings - Redefine Keys
142	66	36418	Short Delay
142	76	36428	Clear Screen Buffer
142	105	36457	Current Player Being Altered
142	107	36459	Messaging: "Player 1 Controls"
142	140	36492	Messaging: "Player 2 Controls"
142	153	36505	Messaging: "Sound On"
142	166	36518	Messaging: "Sound Off"
142	179	36531	Messaging: "Options Type"
142	198	36550	Messaging: "Exit"
142	214	36566	Messaging: "Default Keyboard"
142	244	36596	Messaging: "Port 1 Sinclair"
143	15	36623	Messaging: "Port 2 Sinclair"
143	42	36650	Messaging: "Reconfigure Keyboard"
143	65	36673	Messaging: "Kempston"
143	89	36697	Messaging: "Choose Control Type"
143	107	36715	Messaging: "Change Keys" Line 1
143	137	36745	Messaging: "Change Keys" Line 2
143	167	36775	Messaging: "Change Keys" Line 3
143	187	36795	Messaging: "Up"
143	190	36798	Messaging: "Up-Right"
143	199	36807	Messaging: "Right
143	205	36813	Messaging: "Down-Right"
143	216	36824	Messaging: "Down"
143	221	36829	Messaging: "Down-Left"
143	231	36839	Messaging: "Left"
143	236	36844	Messaging: "Up-Left"
143	244	36852	Messaging: "Fire"
144	0	36864	Messaging: "Blank" Text
144	14	36878	Yin-yang Controller
144	158	37022	New Round
144	208	37072	Intro Music
146	0	37376	Routine at 9200
146	41	37417	Routine at 9229
146	58	37434	Routine at 923A
146	85	37461	Print Yin-Yang To Screen
146	228	37604	Print String
146	255	37631	Expand Time Byte To ASCII
147	44	37676	Processes The Remaining Time String
147	104	37736	Data block at 9368
149	212	38356	Routine at 95D4
151	69	38725	Routine at 9745
156	40	39976	Game status buffer entry at 9C28
156	41	39977	Game status buffer entry at 9C29
156	42	39978	Game status buffer entry at 9C2A
156	43	39979	Game status buffer entry at 9C2B
156	44	39980	Number of players.
156	45	39981	Game status buffer entry at 9C2D
156	46	39982	Game Entry Point
156	83	40019	Read Key Input
156	110	40046	Unused
156	111	40047	Routine at 9C6F
156	147	40083	Print Remaining Time
156	160	40096	Countdown Time
156	165	40101	Time
156	166	40102	Routine at 9CA6
158	210	40658	Routine at 9ED2
163	255	41983	Random Number
164	2	41986	Routine at A402
166	71	42567	New High Score?
166	133	42629	Print Hi-Score
166	151	42647	Check Player Score Against High Score
166	182	42678	Game status buffer entry at A6B6
166	183	42679	Game status buffer entry at A6B7
170	0	43520	Game status buffer entry at AA00
170	1	43521	1UP Yin-yang count.
170	6	43526	Demo Mode
170	64	43584	Game status buffer entry at AA40
170	65	43585	Game status buffer entry at AA41
170	156	43676	Message at AA9C
170	220	43740	Routine at AADC
171	112	43888	Demo Mode
172	5	44037	Main Game Loop
172	62	44094	Routine at AC3E
174	191	44735	Print The Current Dan (or "NOVICE") Message
174	248	44792	Initialise Time Counter
175	1	44801	Routine at AF01
175	11	44811	Reset Score
175	26	44826	Routine at AF1A
175	39	44839	Routine at AF27
175	54	44854	Routine at AF36
175	218	45018	Routine at AFDA
176	11	45067	Data block at B00B
176	36	45092	Message at B024
176	106	45162	Data block at B06A
177	56	45368	Routine at B138
177	90	45402	Routine at B15A
178	250	45818	Sound Flag
178	251	45819	Routine at B2FB
184	0	47104	UDGs
191	19	48915	Routine at BF13
193	1	49409	Routine at C101
193	162	49570	Routine at C1A2
193	204	49612	Routine at C1CC
193	246	49654	Routine at C1F6
194	3	49667	Screen Calculation
194	52	49716	Routine at C234
194	181	49845	Routine at C2B5
195	5	49925	Routine at C305
195	25	49945	Routine at C319
195	79	49999	Routine at C34F
195	110	50030	Routine at C36E
195	228	50148	Routine at C3E4
196	7	50183	Data block at C407
196	9	50185	Player 1 Screen Position
196	11	50187	Game status buffer entry at C40B
196	16	50192	Game status buffer entry at C410
196	17	50193	Game status buffer entry at C411
196	18	50194	Game status buffer entry at C412
196	20	50196	Game status buffer entry at C414
196	27	50203	Game status buffer entry at C41B
196	31	50207	Game status buffer entry at C41F
196	33	50209	Game status buffer entry at C421
196	35	50211	Game status buffer entry at C423
196	37	50213	Game status buffer entry at C425
196	39	50215	Data block at C427