Memory map

Page	Byte	Address	Description
64	0	4000	Loading Screen
91	0	5B00	Data block at 5B00
92	0	5C00	Routine at 5C00
95	212	5FD4	Graphics: Mothership Alien
96	20	6014	Graphics: Shield
96	38	6026	Graphics: Lives Icon
96	46	602E	Graphics: Bullets
96	78	604E	Graphics: Ship
96	110	606E	Graphics: Eggsplosion
96	174	60AE	Graphics: Bird
96	231	60E7	Graphics: Pheenix (Egg)
97	61	613D	Graphics: Masks
97	91	615B	Graphics: Pheenix (Hatched)
97	163	61A3	Graphics: Explosion Bits
97	187	61BB	Graphics: MegaDodo Logo
97	219	61DB	Graphics: Large Star
97	227	61E3	Graphics: Box
97	235	61EB	Graphics: Mothership Degraded Hull
100	43	642B	Messaging: Presents
100	51	6433	Messaging: Megadodo Software
100	75	644B	Messaging: Author M.W.Ward
100	94	645E	Messaging: "press S to start"
100	110	646E	Messaging: Game Over
100	118	6476	Messaging: Instructions
100	209	64D1	Messaging: "Select Joystick Or Keys"
101	20	6514	Messaging: Header
101	40	6528	Score Buffer
101	47	652F	Table: Explosion UDGs
101	56	6538	Table: Mothership UDGs
101	138	658A	Table: "PHEENIX" Logo Position Data
101	219	65DB	Random Number Seed
101	221	65DD	Current Alien Phase Data Buffer
101	251	65FB	Table: Phase 00 Alien Phase Data
102	25	6619	Table: Phase 01 Alien Phase Data
102	55	6637	Table: Phase 02/ 03 Alien Phase Data
102	71	6647	Table: Phase 04 Alien Phase Data
102	87	6657	Game status buffer entry at 6657
102	101	6665	Game status buffer entry at 6665
102	102	6666	Game status buffer entry at 6666
102	117	6675	Game status buffer entry at 6675
102	125	667D	Pheenix Colours
102	127	667F	Alien Count
102	128	6680	Game status buffer entry at 6680
102	143	668F	Alien Index
102	145	6691	Game status buffer entry at 6691
102	146	6692	Game status buffer entry at 6692
102	147	6693	Shield Flag?
102	148	6694	Shield Timer
102	149	6695	Bullet Rate Limiter?
102	150	6696	State: Fire Button
102	151	6697	Table: Bullet Position
102	158	669E	Table: Bullet Data
102	163	66A3	Explosion: Frame
102	164	66A4	Collision Flag
102	165	66A5	Explosion Counter
102	166	66A6	Movement Animation Frame Counter
102	167	66A7	Game status buffer entry at 66A7
102	185	66B9	Game status buffer entry at 66B9
102	186	66BA	Game status buffer entry at 66BA
102	195	66C3	Game status buffer entry at 66C3
102	196	66C4	Game status buffer entry at 66C4
102	211	66D3	Mothership Alien State
102	212	66D4	Mothership Animation Counter
102	213	66D5	Table: Alien Explosions
102	231	66E7	Game status buffer entry at 66E7
102	237	66ED	Player Attribute Buffer Position
102	239	66EF	Flag: Extra Life
102	240	66F0	Player Lives
102	241	66F1	Phase?
102	242	66F2	Flag: Title Screen Start
102	243	66F3	Flag: Demo Mode Active?
102	244	66F4	Demo Mode Movement
102	245	66F5	Flag: Player Lost All Lives?
102	246	66F6	Control Method
102	247	66F7	Convert Screen Address To Attribute Buffer Address
103	4	6704	Convert Attribute Address To Screen Buffer Address
103	14	670E	Generate Random Number
103	32	6720	Clear Screen
103	46	672E	Clear Play-Area
103	111	676F	Print String
103	169	67A9	Print Score
103	182	67B6	Handler: Score
103	246	67F6	Print Header
104	28	681C	Print Lives
104	69	6845	Handler: 2x2 Mask
104	78	684E	Handler: Eggsplosion Left
104	83	6853	Handler: Eggsplosion Right
104	86	6856	Handler: Eggsplosion
104	144	6890	Difficulty Delay?
104	161	68A1	Print Asterisk
104	184	68B8	Transition Effect
105	38	6926	Handler: Ship Explosion
105	106	696A	Draw Alien Mothership
106	35	6A23	Handler: Mothership
107	49	6B31	Fill Screen With UDG
107	79	6B4F	Print Control Menu
107	153	6B99	Print Instructions Menu
108	13	6C0D	Data block at 6C0D
108	19	6C13	Table: Music Data
108	157	6C9D	Check Collision
108	201	6CC9	Draw Ship
108	238	6CEE	Handler: Player Death/ Game Over
109	207	6DCF	Handler: Shield
110	248	6EF8	Handler: Ship Movement
111	67	6F43	Handler: Move Ship Left
111	147	6F93	Handler: Update Ship Attributes
111	221	6FDD	Handler: Move Ship Right
112	48	7030	Handler: Player Bullets
113	89	7159	Handler: Bullet Collision
113	190	71BE	Handler: Bullet Collision Effects
114	84	7254	Handler: Level Reset
114	201	72C9	Handler: Level Complete
115	13	730D	Handler: Display Mothership Bonus
116	7	7407	New Level Check
116	12	740C	Initialise Level
116	164	74A4	Game Intro
117	100	7564	Clear Sprite Area
117	146	7592	Messaging: Hi There!
117	153	7599	Game Entry Point
117	173	75AD	Handler: Bird Alien
117	183	75B7	Handler: Pheenix
118	22	7616	Handler: Aliens Movement/ Spawning
121	178	79B2	Handler: Alien Explosions
123	103	7B67	Handler: Aliens
124	130	7C82	Title Screen
125	217	7DD9	Start Game
126	71	7E47	Input: "S" To Start
126	100	7E64	Messaging: Programs Wanted
126	165	7EA5	Unused
255	24	FF18	Unused