Memory map

Page	Byte	Address	Description
64	0	4000	Loading screen
91	128	5B80	Game Entry Point
92	176	5CB0	Indirect Jump
92	177	5CB1	Stack
93	0	5D00	Unused
94	0	5E00	High Score
94	3	5E03	Game Options
94	4	5E04	Sound Mute Flag
94	5	5E05	1UP Score
94	8	5E08	2UP Score
94	11	5E0B	Temporary Sprite State
94	19	5E13	Bug Start Cubby Hole
94	20	5E14	Unused
94	21	5E15	Leaf Growth Flags
94	22	5E16	Bug Count
94	23	5E17	Game Timer
94	25	5E19	Random Number
94	26	5E1A	Sprite Screen Position
94	28	5E1C	Free Weapon Slot
94	30	5E1E	Current Player
94	31	5E1F	Last Frame
94	32	5E20	Frame Updated
94	33	5E21	Menu Item Attribute
94	34	5E22	"Get Ready" Delay Counter
94	35	5E23	Cubby Holes
94	45	5E2D	Inactive Player Cubby Holes
94	55	5E37	Active Player Level
94	56	5E38	Active Player Lives
94	57	5E39	Inactive Player Level
94	58	5E3A	Inactive Player Lives
94	59	5E3B	Bugs Eating Flower
94	60	5E3C	Bonus Item State
94	68	5E44	Inactive Player Flower And Leaves
94	108	5E6C	Robbie State
94	116	5E74	Spray Can State
94	124	5E7C	Weapon 1 State
94	132	5E84	Weapon 2 State
94	140	5E8C	Flower State
94	148	5E94	Leaf Data
94	180	5EB4	Bug State
94	228	5EE4	Explosion State
94	236	5EEC	Messaging: Unused Text
94	245	5EF5	Messaging: Copyright
95	22	5F16	Default Bug State
95	30	5F1E	Default Robbie State
95	38	5F26	Default Flower State
95	46	5F2E	Default Cubby Holes
95	56	5F38	Default Leaf State
95	64	5F40	Reset Flower And Leaves
95	83	5F53	Create Game Window
95	128	5F80	Initialise New Level
95	160	5FA0	Reset Cubby Holes
95	176	5FB0	Draw Cubby Hole Items
95	216	5FD8	Clear Cubby Hole
95	222	5FDE	Draw Cubby Hole Item
96	27	601B	Cubby Hole Item Sprites
96	31	601F	Draw Cubby Hole Shelves
96	46	602E	Draw Play Area
96	119	6077	Print String Rows
96	135	6087	Play Area Strings
96	144	6090	Messaging: Plant Eaten
96	170	60AA	Player Turn Ends
96	253	60FD	Show Game Over For 1UP
97	27	611B	Show Game Over For 2UP
97	31	611F	Show Game Over For Active Player
97	39	6127	End Game
97	59	613B	1UP/ 2UP Swapper
97	99	6163	Messaging: Game Over
97	118	6176	Initialise Player
97	158	619E	Flash Player Label
97	180	61B4	Stop Flashing Player Label
97	198	61C6	Security Check
97	205	61CD	Game Initialisation
97	234	61EA	Select Game
98	66	6242	Flash First Menu Line
98	73	6249	Flash Second Menu Line
98	80	6250	Game Selection Menu
98	124	627C	Game Select Attribute Table
98	130	6282	Game Select Y Position Table
98	136	6288	Messaging: Game Selection Screen Text
98	231	62E7	Write Menu Line
98	247	62F7	Reset Player Data
99	30	631E	Messaging: Spray The Bugs
99	45	632D	Start Game
99	79	634F	Run Main Loop
99	126	637E	Main Jump Table
99	170	63AA	Check Bug Leaf Collision
99	225	63E1	Play Tune
100	13	640D	Note Table
100	29	641D	Level Complete Tune
100	45	642D	Jingle Tune
100	77	644D	Check Bug Flower Collision
100	115	6473	Play Repellent Hit Sound
100	133	6485	Play Explosion Sound
100	158	649E	Play Repellent Sound
100	170	64AA	Play Square Wave
100	184	64B8	Play Streamer Sound
100	201	64C9	Play Smoke Sound
100	214	64D6	Play High Tone
100	220	64DC	Play Low Tone
100	231	64E7	Play Mid Tone
100	237	64ED	Update Bug Common
100	250	64FA	Update Leech
101	186	65BA	Handle Leech Weapon Hit
101	203	65CB	Stun Bug
101	214	65D6	Kill Leech
101	220	65DC	Explode Bug
101	241	65F1	Start Explosion
101	247	65F7	Animate Explosion
102	130	6682	Explosion Sprite Table
102	142	668E	Start Flower Bloom
102	166	66A6	Update Blooming Flower
102	215	66D7	Complete Level
103	14	670E	Colour Open Flower
103	72	6748	Flower Attributes
103	135	6787	Flower Sprite Table
103	145	6791	Get Flower Sprite
103	156	679C	Start Eating Flower
103	174	67AE	Update Midges
104	221	68DD	Calculate Midges Movement
104	237	68ED	Handle Midges Weapon Hit
105	15	690F	Find Bug Target
105	107	696B	Get Robbie Direction
105	116	6974	Fire Repellent Spray
105	143	698F	Update Repellent Spray
105	179	69B3	Remove Weapon
105	187	69BB	Fire Streamer
105	219	69DB	Streamer Colours
105	223	69DF	Fire Streamer Right
105	232	69E8	Update Streamer
106	49	6A31	Remove Streamer
106	58	6A3A	Remove Object
106	66	6A42	Check Weapon Hit
106	115	6A73	Explode Robbie
106	152	6A98	Update Slug
107	32	6B20	Handle Slug Weapon Hit
107	58	6B3A	Eat Flower
107	112	6B70	Fire Weapon
107	165	6BA5	Create Weapon
107	199	6BC7	Fire Smoke Bomb Right
107	208	6BD0	Update Smoke Bomb
108	2	6C02	Grow Smoke Bomb
108	14	6C0E	Grow Leaf
108	83	6C53	Update Leaf
108	199	6CC7	Get Leaf Sprite
108	225	6CE1	Leaf Sprite Table
108	241	6CF1	Sink Flower
109	7	6D07	Draw Flower
109	12	6D0C	Update Flower
109	156	6D9C	Read Player Input
109	186	6DBA	Game Play Entry
110	210	6ED2	Update Spray Can
110	241	6EF1	Update Robbie Carrying Can
111	49	6F31	Draw Object
111	55	6F37	Check Vertical Movement Facing Right
111	65	6F41	Move Robbie Right
111	119	6F77	Move Robbie Left
111	170	6FAA	Move Robbie Up
111	189	6FBD	Move Robbie Down
111	201	6FC9	Move Robbie Into Cubby Hole
112	7	7007	Put Can In Cubby Hole
112	63	703F	Release Item Lock
112	73	7049	Check Cubby Hole
112	143	708F	Update High Score
112	209	70D1	Set Leaves Bugs And Explosion Inactive
112	214	70D6	Set Objects Inactive
112	223	70DF	Limit Frame Rate
112	237	70ED	Frame Update
113	19	7113	Reset Modified Code
113	37	7125	Reset Modified Code In Frame
113	48	7130	Next Object
113	69	7145	End Of Pass
113	100	7164	Spawn Bug
113	190	71BE	Spawn Bonus Item
114	26	721A	Update Bonus Item
114	73	7249	Collect Bonus Item
114	90	725A	Place Bonus Item Right
114	98	7262	Create Bug
114	204	72CC	Create Bug Right
114	212	72D4	Create Bug Level 1
114	218	72DA	Create Bug Level 2
114	225	72E1	Create Bug Level 3
114	233	72E9	Bug Type Table
114	245	72F5	Check Bug Robbie Collision
115	37	7325	Display Lives
115	122	737A	Add Points To Score
115	157	739D	Print Scores
115	205	73CD	Print Character
115	237	73ED	Print Colour String
116	19	7413	Print Banner
116	57	7439	Reset Screen Buffer
116	64	7440	Fill Memory
116	71	7447	Reset Attribute Buffer
116	80	7450	Colourise Sprite
116	143	748F	Calculate Attribute Address
116	165	74A5	Set Up Previous Sprite
117	28	751C	Draw Sprite
117	66	7542	Prepare Old Sprite
117	122	757A	Find Object Sprite
117	133	7585	Screen Address One Pixel Above
117	154	759A	Calculate Screen Address
117	185	75B9	Store Entity
117	204	75CC	Controls: Kempston Joystick
117	208	75D0	Draw Sprite Rows
118	26	761A	Sprite Table
118	154	769A	Sprite: Flower (Bud)
118	214	76D6	UDG Graphics
118	238	76EE	Sprite: Pesticide Spray Can
119	138	778A	Sprite: Robbie the robot
120	122	787A	Sprite: Leaves
121	24	7918	Sprite: Smoke Bomb
121	145	7991	Sprite: Streamer/ Leech Laser
121	179	79B3	Sprite: Scuttling Leech
122	115	7A73	Sprite: Interstellar Space Slug
123	7	7B07	Sprite: Menacing Midges
123	241	7BF1	Sprite: Insect Repellent/ Super Space Slug Spray
124	57	7C39	Sprite: Flower (Others)
126	202	7ECA	Sprite: Explosions
127	99	7F63	Sprite: Fertiliser
127	138	7F8A	Sprite: Fly Swat
127	173	7FAD	Sprite: Watering Can
127	210	7FD2	Messaging: Copyright