Memory map

Page	Byte	Address	Description
64	0	4000	Loading screen
91	128	5B80	Game entry point
92	240	5CF0	High Score
92	243	5CF3	Game Options
92	244	5CF4	1UP Score
92	247	5CF7	2UP Score
92	250	5CFA	Buffer
93	0	5D00	Jetman Frame
93	1	5D01	Jetman X Co-ordinate
93	2	5D02	Jetman Y Co-ordinate
93	3	5D03	Jetman Attribute
93	4	5D04	Jetman Direction
93	5	5D05	Jetman Speed: Horizontal
93	6	5D06	Jetman Speed: Vertical
93	7	5D07	Jetman Height
93	8	5D08	Laser Beam Parameters
93	40	5D28	Explosion Sound Parameters
93	48	5D30	Active Player Rocket Parameters
93	56	5D38	Fuel 00 when not on screen, $04 when visible
93	57	5D39	Ship top section X position
93	58	5D3A	Fuel (height)
93	59	5D3B	PARAM12
93	60	5D3C	Fuel status
93	61	5D3D	PARAM14
93	62	5D3E	PARAM15
93	63	5D3F	PARAM16
93	64	5D40	Item visibility
93	65	5D41	Ship middle section X position
93	66	5D42	Falling item (height)
93	72	5D48	Data block at 5D48
93	80	5D50	Alien 1
93	88	5D58	Alien 2
93	96	5D60	Alien 3
93	104	5D68	Alien 4
93	112	5D70	Alien 5
93	120	5D78	Alien 6
93	136	5D88	Game status buffer entry at 5D88
93	152	5D98	Inactive Player Rocket Parameters
93	160	5DA0	Inactive Player Rocket module (fuel/part)
93	168	5DA8	Inactive Player Collectible/ Rocket middle
93	192	5DC0	Actor Buffer
93	200	5DC8	Jetman Fly Counter?
93	201	5DC9	Alien Direction
93	202	5DCA	Jetman Speed Modifier
93	203	5DCB	Current Alien ID
93	204	5DCC	Game Timer
93	206	5DCE	Random Number
93	207	5DCF	Actor Screen Position
93	209	5DD1	Active Player
93	210	5DD2	???
93	211	5DD3	???
93	212	5DD4	Last Frame
93	213	5DD5	Frame Updated
93	214	5DD6	Menu Item Attribute
93	215	5DD7	"Get Ready" Delay Counter
93	240	5DF0	Active Player Level
93	241	5DF1	Active Player Lives
93	242	5DF2	Unused
93	248	5DF8	Inactive Player Level
93	249	5DF9	Inactive Player Lives
94	0	5E00	Data block at 5E00
95	192	5FC0	Data block at 5FC0
96	0	6000	Platform Graphics
96	16	6010	Player Initialisation Data
96	24	6018	Rocket Initialisation Data
96	48	6030	Fuel Pod Initialisation Data
96	56	6038	Collectible Initialisation Data
96	64	6040	Rights Messaging
96	97	6061	Copyright Messaging
96	138	608A	Create Game Window
96	169	60A9	Initialise New Level
96	205	60CD	Reset Rocket
96	221	60DD	Reset Player
97	106	616A	1UP/ 2UP Swapper
97	135	6187	Game Over P1 Message
97	154	619A	Player Initialisation
97	189	61BD	Routine at 61BD
97	211	61D3	Routine at 61D3
97	229	61E5	Security Check
97	235	61EB	Game Initialisation
98	96	6260	Game Selection Menu
98	141	628D	Game Select Attribute Table
98	147	6293	Game Select Y Position Table
98	153	6299	Game Selection Title text
98	255	62FF	Print Menu Item
99	15	630F	Reset Players
99	51	6333	Start Game
99	116	6374	Jump Table
99	152	6398	Routine at 6398
99	203	63CB	Update Highscore
99	218	63DA	Routine at 63DA
100	152	6498	Routine at 6498
101	31	651F	Routine at 651F
102	48	6630	Drop New Fuel Pod
102	91	665B	Reset Rocket Modules State
102	96	6660	Set Objects As Inactive
102	105	6669	Animate Rocket Flames
102	199	66C7	Rocket Take Off
102	235	66EB	Rocket Land
103	7	6707	Update Rocket
103	51	6733	Update Rocket Colour
103	195	67C3	Collectables Sprite Table
103	237	67ED	Sounds: Thrusters
103	253	67FD	Sounds: Rocket Build
104	3	6803	Sounds: Pickup Fuel
104	9	6809	Sounds: Pickup Item
104	13	680D	Play square wave sound
104	30	681E	Sounds: Laser Beam
104	52	6834	Set Explosion Sound Defaults
104	75	684B	Sounds: Player Death
104	84	6854	Sounds: Enenmy Death
104	95	685F	Sounds: Explosion
104	112	6870	End Sound
104	117	6875	Do explosion after object death
104	148	6894	End Animation
104	159	689F	Start Animation
104	171	68AB	Change Animation
104	177	68B1	Animate explosion
105	15	690F	Explosion Sprite Table
105	27	691B	Limit Frame Rate
105	41	6929	Routine at 6929
105	69	6945	Alien Sprite Table
105	101	6965	Routine at 6965
106	108	6A6C	Routine at 6A6C
106	239	6AEF	Routine at 6AEF
108	47	6C2F	Routine at 6C2F
108	245	6CF5	Routine at 6CF5
109	211	6DD3	Meteor Update
111	145	6F91	Handler: Laser Beam
111	252	6FFC	Animate: Laser Beam
112	164	70A4	Display Lives
112	249	70F9	Add Points To Score
113	28	711C	Print Scores
113	76	714C	Print Character
113	108	716C	Print String
113	146	7192	Print Banner
113	184	71B8	Reset Screen Buffer
113	191	71BF	Reset Routine
113	198	71C6	Reset Attribute Buffer
113	207	71CF	Colourise Sprite
114	14	720E	Calculate Attribute Address
114	36	7224	Routine at 7224
114	60	723C	Routine at 723C
114	94	725E	Routine at 725E
114	106	726A	Routine at 726A
114	238	72EE	Routine at 72EE
115	8	7308	Calculate Screen Address
115	39	7327	Store Entity
115	58	733A	Controls: Kempston Joystick
115	62	733E	Input: Left/ Right
115	116	7374	Input: Fire
115	147	7393	Input: Thrust
115	178	73B2	Game Play Starts
115	211	73D3	Jetman Fly
117	113	7571	Jetman Walk
118	29	761D	Routine at 761D
118	109	766D	Routine at 766D
118	226	76E2	Platform Graphics
118	250	76FA	Jetman Sprite Table
119	26	771A	Data block at 771A
119	58	773A	Mask Sprite
119	150	7796	JetMan Graphics
123	158	7B9E	Round 1 Alien Graphics
123	204	7BCC	Explosion Frames
124	101	7C65	Ship U3
124	206	7CCE	Ship U1
125	55	7D37	Ship U2
125	160	7DA0	Ship U4
126	9	7E09	Sprite: Gold Bar
126	28	7E1C	Sprite: Fuel Pod
126	53	7E35	Sprite: Plutonium
126	78	7E4E	Sprite: Isotope
126	107	7E6B	Sprite: Mineral
126	128	7E80	Sprite: Gemstone
126	155	7E9B	Round 2 Alien Graphics
126	213	7ED5	Round 4 Alien Graphics
126	228	7EE4	Round 5 Alien Graphics
126	245	7EF5	Round 3 Alien Graphics
127	51	7F33	Round 6 Alien Graphics
127	82	7F52	Round 7 Alien Graphics
127	111	7F6F	Round 8 Alien Graphics
127	140	7F8C	Flame Graphics
127	208	7FD0	Copyright Messaging