Memory map

Page	Byte	Address	Description
64	0	16384	Loading Screen
91	254	23550	Stack
93	192	24000	Game Initialise
94	36	24100	Populate Room Buffer
94	114	24178	Command 4: Switch Tile Set
94	146	24210	Command 1: Skip Tiles
94	170	24234	Command 2: Draw Repeated Tile
94	200	24264	Command 8 (Or Higher): Single Tile
94	219	24283	Command 3: Fill Attribute Buffer With Single Colour
95	53	24373	Draw Room Tile
95	161	24481	Screen Initialised Flag
95	162	24482	Input State
95	163	24483	Unused
95	164	24484	Previous Input State
95	165	24485	Percy Facing Direction
95	166	24486	Input Mode
95	167	24487	Falling State
95	168	24488	Collision Flag
95	169	24489	Flag: Egg State
95	170	24490	Flag: Carrying A Worm
95	171	24491	Energy Bar Delay Counter
95	172	24492	Flag: Worm Drop
95	173	24493	Flag: Landed On Platform Flag
95	174	24494	Movement Speed
95	175	24495	Percy Flap Counter
95	176	24496	Percy Animation Counter
95	177	24497	Current Level
95	178	24498	Worms Remaining
95	179	24499	Lives Display Character
95	180	24500	Chick Animation States
95	181	24501	Room Object Data Pointer
95	183	24503	Beep Pitch
95	185	24505	Room Drawing Position
95	187	24507	Respawn Flag
95	188	24508	Pause Flag
95	189	24509	Border Colour
95	190	24510	Lives Backup
95	193	24513	Active Tile Set Pointer
95	195	24515	Room Data Pointer
95	197	24517	Current Room
95	198	24518	Set Room Data Pointer
95	231	24551	Raise Table Error
95	233	24553	Main Game Loop
98	128	25216	Move Percy Left
98	162	25250	Move Percy Right
98	194	25282	Move Percy Up
98	208	25296	Move Percy Down
98	216	25304	Update Movement Speed
99	7	25351	Transition Room Right
99	31	25375	Transition Room Left
99	56	25400	Update Percy Animation
99	187	25531	Print HUD Header
99	233	25577	Messaging: Header
100	56	25656	Draw Room Rows
100	86	25686	Draw Room Row
100	128	25728	Update Energy Bar
100	231	25831	Lose Life
101	61	25917	Initialise Lives
101	92	25948	Start Level
101	129	25985	Print Character
101	155	26011	Main Menu
101	234	26090	Draw Chicks In The Nest
102	13	26125	Messaging: Press ENTER to Start
102	33	26145	Print String
102	43	26155	Handler: Worm Collection and Delivery
102	131	26243	Handler: Draw Worm Animation Frame
102	168	26280	Handler: Worm Found
102	225	26337	Percy Carrying Worm
103	156	26524	Drop Worm
103	178	26546	Add To Score
104	17	26641	Print Score
104	37	26661	Current Score
104	44	26668	Score Buffer
104	50	26674	Animate Snapdragons
104	159	26783	Table: Snapdragon Definition
104	184	26808	Handle Level Complete
104	247	26871	Set Up Next Level
105	59	26939	Level Complete Sound Step
105	97	26977	Table: Worm Collection Count
105	102	26982	Pause Border Effect
105	146	27026	Run Game Frame
105	167	27047	Run Main Loop Body
105	247	27127	Handler: Red Bird
106	246	27382	Update Red Bird Movement
107	200	27592	8-Direction Movement Jump Table
108	12	27660	Validate Position
108	57	27705	Generate Random Number
108	83	27731	Check Sprite Collision
108	133	27781	Check Egg Collision
108	165	27813	Reset Red Bird
108	178	27826	Red Bird Direction Change Timer
108	179	27827	Red Bird Traversal Direction
108	180	27828	Red Bird Stun Timer
108	181	27829	Red Bird Stun Timer Copy
108	182	27830	Red Bird Current Room
108	183	27831	Red Bird Animation Seed
108	184	27832	Red Bird Movement Direction
108	185	27833	Red Bird Flight Speed
108	186	27834	Red Bird Path Counter
108	187	27835	Pointer: Red Bird Flightpath Data
108	189	27837	Red Bird Appearance Delay
108	190	27838	Red Bird Speed Table
108	195	27843	Lives Display Previous
108	196	27844	Red Bird Wing Animation Counter
108	197	27845	Butterfly Movement Boundary
108	198	27846	Butterfly Room Table
108	220	27868	Butterfly Wing Flap Toggle
108	221	27869	Butterfly Movement Delay
108	222	27870	Butterfly Direction
108	223	27871	Handle Butterfly
109	144	28048	Randomise Butterfly Position
109	158	28062	Reset Butterfly Collected Flags
109	171	28075	Handler: Cars
110	47	28207	Randomise Car Position
110	93	28253	Handler: Car Type 1 (Driving Right)
111	19	28435	Initialise Car
111	84	28500	Check Car Egg Collision
111	141	28557	Handler: Car Type 2 (Driving Left)
112	40	28712	Handler: Car Type 3 (Driving Left, Fixed Speed)
112	130	28802	Handler: Frogs
112	219	28891	Update Frog
113	144	29072	Handler: Frogs Check Egg Collision
113	225	29153	Cancel Egg Drop
113	233	29161	Frog 1 State Data
113	236	29164	Frog 2 State Data
113	239	29167	Table: Frog Jump Height
114	8	29192	Car State Data
114	15	29199	Room Handler Dispatch
114	63	29247	Handler: Room 1
114	101	29285	Handler: Room 2
114	134	29318	Handler: Room 3
114	189	29373	Handler: Room 4
114	225	29409	Handler: Room 5
115	14	29454	Handler: Room 6
115	103	29543	Handler: Room 7
115	164	29604	Handler: Room 8
115	225	29665	Handler: Room 9
115	250	29690	Handler: Room 10
116	19	29715	Handler: Room 11
116	57	29753	Handler: Helicopter
116	167	29863	Randomise Helicopter Position
116	185	29881	Animate Stunned Hazard
116	214	29910	Check Hazard Collision
117	7	29959	Helicopter Movement Boundary
117	8	29960	Helicopter State Data
117	18	29970	Handler: Cat
117	116	30068	Reset Cat Position
117	136	30088	Cat Direction Data
117	139	30091	Handler: Dog
117	151	30103	Dog Direction Data
117	154	30106	Handler: UFO
118	40	30248	Reset UFO Position
118	51	30259	UFO Abduct Percy
118	121	30329	UFO State Data
118	128	30336	Handler: Plane
118	140	30348	Handle Plane
119	19	30483	Handle Plane Bomb
119	174	30638	Bomb Explosion Counter
119	175	30639	Plane State Data
119	179	30643	Plane Speed
119	180	30644	Initialise Parachute X Position
119	185	30649	Handler: Balloon
120	145	30865	Balloon Direction Flag
120	146	30866	Balloon Pop Counter
120	147	30867	Handler: Walking Paratrooper
121	36	31012	Paratrooper Data
121	40	31016	Table: Paratrooper Walking Speed
121	48	31024	Generate Random Number
121	74	31050	Handler: Spider
121	192	31168	Initialise Spider
121	209	31185	Spider Direction Flag
121	210	31186	Handler: Parachute Descent
122	195	31427	Parachute State Data
122	199	31431	Random Seed
122	200	31432	Cat State Data
122	232	31464	Dog State Data
123	4	31492	Table: Parachute Starting X Positions
123	13	31501	Paratrooper State Data
123	45	31533	Unused
123	46	31534	Jump Table: Room Handlers
123	68	31556	Unused
131	169	33705	Room 1
132	180	33972	Room 2
135	87	34647	Room 3
137	127	35199	Room 4
139	7	35591	Room 5
140	88	35928	Room 6
142	16	36368	Room 7
143	99	36707	Room 8
145	120	37240	Room 9
147	85	37717	Room 10
148	90	37978	Room 11
149	165	38309	Room 12: Title Screen
151	71	38727	Room 13: Level 2
151	218	38874	Room 14: Level 3
152	111	39023	Room 15: Level 4
153	4	39172	Room 16: Level 5
153	152	39320	Unused
155	170	39850	Graphics: Default Tile Set
163	106	41834	Graphics: Alternate Tile Set
167	99	42851	Graphics: Chick Frames
167	115	42867	Graphics: Mayfly Frames
167	147	42899	Graphics: Butterfly Frames
167	179	42931	Graphics: Worm
167	211	42963	Graphics: Egg
167	251	43003	Graphics: Bomb
168	3	43011	Unused
171	59	43835	Graphics: Sprite Sheet
183	59	46907	Unused
187	28	47900	Draw Sprites and Merge Collision Map
188	14	48142	Calculate Screen Buffer Address
188	55	48183	Adjust Screen Address at Row Boundary
188	82	48210	Apply Sprite Attributes (3-Wide)
188	116	48244	Write Attribute Block (3-Wide)
188	244	48372	Unused
188	247	48375	Apply Sprite Attributes (2-Wide)
189	25	48409	Write Attribute Block (2-Wide)
189	94	48478	Draw 3-Wide Sprite Column
189	166	48550	Draw 2-Wide Sprite Column
189	228	48612	Sprite Inactive Delay
189	248	48632	Unused
190	0	48640	Table: Red Bird Flight Path Data
190	147	48787	Unused
190	148	48788	Unused: Draw 2-Wide Sprite With Attributes
190	178	48818	Unused: Draw 1-Wide Sprite With Attributes
190	202	48842	Unused: Apply Sprite Attributes
190	224	48864	Unused: Write Sprite Attribute Cells
191	37	48933	Unused: Fragment
191	44	48940	Unused: Copy 8 Bytes
191	53	48949	Unused: Draw 3-Wide Sprite With Attributes
191	135	49031	Unused: Apply 3-Wide Sprite Attributes
191	148	49044	Unused: Write 3-Wide Attribute Cells
191	217	49113	Unused: Fragment 2
191	229	49125	Unused
192	0	49152	Room Buffer
218	192	56000	Percy States
218	196	56004	3-Wide Sprite 1 Data States
218	200	56008	3-Wide Sprite 2 Data States
218	204	56012	3-Wide Sprite 3 Data States
218	208	56016	3-Wide Sprite 4 Data States
218	212	56020	3-Wide Sprite 5 Data States
218	216	56024	3-Wide Sprite 6 Data States
218	220	56028	3-Wide Sprite 7 Data States
218	224	56032	Egg Sprite Data
218	228	56036	Butterfly Sprite Data
218	232	56040	2-Wide Sprite 1 Data States
218	236	56044	2-Wide Sprite 2 Data States
218	240	56048	2-Wide Sprite 3 Data States
218	244	56052	2-Wide Sprite 4 Data States
218	248	56056	2-Wide Sprite 5 Data States
218	252	56060	2-Wide Sprite 6 Data States
219	0	56064	Backup: Percy
219	4	56068	Backup: 3-Wide Sprite 1
219	8	56072	Backup: 3-Wide Sprite 2
219	12	56076	Backup: 3-Wide Sprite 3
219	16	56080	Backup: 3-Wide Sprite 4
219	20	56084	Backup: 3-Wide Sprite 5
219	24	56088	Backup: 3-Wide Sprite 6
219	28	56092	Backup: 3-Wide Sprite 7
219	32	56096	Backup: Egg
219	36	56100	Unused
219	40	56104	Backup: 2-Wide Sprite 1
219	44	56108	Backup: 2-Wide Sprite 2
219	48	56112	Backup: 2-Wide Sprite 3
219	52	56116	Backup: 2-Wide Sprite 4
219	56	56120	Backup: 2-Wide Sprite 5
219	60	56124	Backup: 2-Wide Sprite 6
219	64	56128	Unused
222	158	56990	Room Object Data
224	0	57344	Sprite Buffer
248	0	63488	Overlay Buffer
250	193	64193	Play Next Level Jingle
250	249	64249	Audio: Next Level Jingle
252	27	64539	Print Author Byline
252	46	64558	Print Message
252	61	64573	Messaging: Author Byline
252	82	64594	Print High Score
252	153	64665	Messaging: High Score
252	166	64678	High Score
255	88	65368	Graphics: Custom UDGs