Memory map

Page	Byte	Address	Description
64	0	4000	Loading Screen
96	0	6000	Entity List
97	0	6100	Entity List Base
109	125	6D7D	Game status buffer entry at 6D7D
113	69	7145	Data block at 7145
113	120	7178	Data block at 7178
113	192	71C0	Data block at 71C0
114	128	7280	Data block at 7280
117	0	7500	Entity Sprite: Enforcer
120	0	7800	Data block at 7800
120	192	78C0	Data block at 78C0
121	64	7940	Data block at 7940
122	0	7A00	Entity Sprite: Blank 1
128	0	8000	Print State: Y Position
128	1	8001	Print State: X Position
128	2	8002	Print State: Bit-Shift Count
128	3	8003	Print State: Character Code
128	4	8004	Print State: Attribute Byte
128	5	8005	Print State: Left Margin
128	6	8006	Print State: Right Margin
128	7	8007	Print State: Flags
128	8	8008	Print State: Font Bitmap Pointer
128	10	800A	Print State: Handler Pointer
128	12	800C	Print State: Normal Width
128	13	800D	Print State: Narrow Width
128	14	800E	Print State: Wide Width
128	15	800F	Print State: Space Width
128	16	8010	Print State: Line Height
128	17	8011	Print State: Row Count
129	0	8100	Font UDGs
135	0	8700	Entity Sprite: Points
138	0	8A00	Column Pixel Lookup Table
140	0	8C00	Screen Row Address Lookup Table
141	128	8D80	Plot Screen Pixel
141	204	8DCC	Print Dispatch
141	221	8DDD	Print Dispatch Return
141	227	8DE3	Print Handler
142	15	8E0F	Print Handler: Newline
142	35	8E23	Print Handler: Unsupported
142	46	8E2E	Print Handler: Ink
142	61	8E3D	Print Handler: Paper
142	82	8E52	Print Handler: Flash
142	101	8E65	Print Handler: Bright
142	120	8E78	Print Handler: Print At X
142	130	8E82	Print Handler: Print At Y
142	146	8E92	Print Handler: Tab
142	170	8EAA	Print Handler: Left Margin
142	179	8EB3	Print Handler: Right Margin
142	199	8EC7	Print Handler: Select Font
142	230	8EE6	Print Handler: Mask Parameter
142	247	8EF7	Print Handler: Render
143	208	8FD0	Control Code Dispatch Table
143	230	8FE6	Font Configuration Table
143	242	8FF2	Game status buffer entry at 8FF2
144	6	9006	Print Messaging
144	16	9010	Initialise Print Tables
144	68	9044	Reset Print State
144	81	9051	Messaging: Reset
144	99	9063	Routine at 9063
145	0	9100	Entity Sprite: Player
148	0	9400	Entity Sprite: Mommy
154	0	9A00	Entity Sprite: Daddy
160	0	A000	Entity Sprite: Mikey
166	0	A600	Entity Sprite: Hulk
172	0	AC00	Entity Sprite: Enforcer Bullets
173	128	AD80	Entity Sprite: Spheroid
181	0	B500	Entity Sprite: Test
184	0	B800	Entity Sprite: Brain
190	0	BE00	Entity Sprite: Blank 2
196	0	C400	Game Entry Point Alias
196	3	C403	Player 1 State
196	8	C408	Wave Number
196	9	C409	Wave Definition Pointer
196	20	C414	Game status buffer entry at C414
196	21	C415	Lives
196	22	C416	Wave
196	23	C417	Lives Display Vertical Step
196	24	C418	Extra Life Compare Byte 0
196	25	C419	Extra Life Compare Byte 1
196	26	C41A	Extra Life Compare Byte 2
196	27	C41B	Extra Life Compare Byte 3
196	28	C41C	Active Enemy Count
196	29	C41D	Wave Display X Pixel Position
196	30	C41E	Two-Player Session Flag
196	35	C423	Wave Enemy Count
196	36	C424	Wave Enemy Type
196	39	C427	Table: Slot Count
196	46	C42E	Border Colour
196	47	C42F	Bouncing Enemy Count
196	71	C447	Player 2 State
196	110	C46E	Game status buffer entry at C46E
196	139	C48B	Player State Swap Buffer
196	207	C4CF	Entity Spawn Timer
196	209	C4D1	Playfield Entity List Pointer
196	211	C4D3	Intro Closing Sprite
196	212	C4D4	Player Y Position
196	213	C4D5	Player X Position
196	218	C4DA	Entity Record Pointer
196	220	C4DC	RNG Seed
196	222	C4DE	Wave Active Flag
196	229	C4E5	Colour Cycle Table Pointer
196	243	C4F3	Cached Spawn Pixels
196	248	C4F8	Attract Mode Frame Counter
196	249	C4F9	Title Strip Blit Parameters
196	253	C4FD	Game status buffer entry at C4FD
196	254	C4FE	Game status buffer entry at C4FE
196	255	C4FF	Game status buffer entry at C4FF
197	0	C500	Game status buffer entry at C500
197	1	C501	Game status buffer entry at C501
197	2	C502	Game status buffer entry at C502
197	3	C503	Game status buffer entry at C503
197	8	C508	Border Colour Step
197	9	C509	Entity List Write Pointer
197	11	C50B	Entity List Snapshot
197	13	C50D	Entity List Working Pointer
197	15	C50F	Entity Pointer Stash
197	23	C517	Player Y Direction
197	24	C518	Player X Direction
197	25	C519	Wave Start Pointer
197	27	C51B	Animation Frame Pair
197	33	C521	Entity State Pointer
197	47	C52F	Entity State Flag
197	49	C531	Wave Sprite Frame Counter
197	50	C532	Death Sequence Mode
197	51	C533	Wave Start Delay
197	52	C534	Animation Frame Counter One
197	54	C536	Animation Frame Counter Two
197	68	C544	Print Player Score
197	193	C5C1	Check Score Award Life
198	12	C60C	Sprite Pixel Data Table
198	174	C6AE	Movement Delta Table
198	206	C6CE	Lookup Vector Table Entry
198	218	C6DA	Hit Test: 8-Byte Bounds Pair
199	2	C702	Dispatch Handler Pointer From HL
199	12	C70C	Help Bar Attribute Sequence
199	19	C713	Update Attribute Bar
199	125	C77D	Poll H Key
199	148	C794	Draw Lives Display
199	207	C7CF	Narrow Entity Sprite Data
200	79	C84F	Erase Narrow Entity Sprite
200	86	C856	Draw Narrow Entity Sprite
201	73	C949	Erase Wide Entity Sprite
201	80	C950	Draw Wide Entity Sprite
203	79	CB4F	Main Game Loop
204	129	CC81	Draw Spawned Entity
204	206	CCCE	Primary Enemy Entity Handler
204	233	CCE9	Process Enemy Entity
205	19	CD13	Advance Entity Pointer
205	24	CD18	Find Colliding Entity
205	52	CD34	Clear Colour Bar Column
205	80	CD50	Handle Homing Enemy
206	100	CE64	Apply Wave Border Colour
206	114	CE72	Compute Entity Approach Position
206	185	CEB9	Animate Wave Start Sequence
206	223	CEDF	Step Narrow Entity Approach
207	51	CF33	Dispatch Narrow Entity Approach
207	82	CF52	Step Wide Entity Approach
207	164	CFA4	Paint Narrow Entity Attributes
208	4	D004	Paint Wide Entity Attributes
208	112	D070	Clear Screen Buffer
208	126	D07E	Set Background Colour
208	139	D08B	Swap Player State
208	167	D0A7	Print Wave Number
208	230	D0E6	Messaging: Wave
208	240	D0F0	Spawn Primary Wave Enemies
209	168	D1A8	Advance RNG Seed
209	191	D1BF	Generate Random Byte
210	76	D24C	Stage Next Wave
210	188	D2BC	Strip Attributes and Fade
211	12	D30C	Clear Screen and Render HUD
211	23	D317	Render HUD
211	71	D347	Messaging: Player
211	86	D356	Messaging: Game Over
211	103	D367	Player Death
211	228	D3E4	Game status buffer entry at D3E4
211	248	D3F8	Player Death: Tape Load Continue
212	129	D481	Messaging: Reset Margins
212	134	D486	Draw Life Icon Cells
212	187	D4BB	Erase Life Icon Cells
212	241	D4F1	Entity Type By Direction Table
213	1	D501	Intro Sprite Template
213	13	D50D	Intro Sprite State
213	25	D519	Initialise Wave Start Sprites
213	42	D52A	Animate Wave Start Sprites
213	98	D562	Draw Playfield Border Row
213	112	D570	Draw Playfield Border
213	177	D5B1	Remove Entity from List
214	32	D620	Sprite Frame Table
214	48	D630	Erase Entity Sprite
214	55	D637	Draw Entity Sprite
215	148	D794	Draw Clipped Wide Sprite
217	196	D9C4	Initialise Entity State
217	224	D9E0	Dispatch Entity State Handler
217	234	D9EA	Entity State Table
218	42	DA2A	Cycle Border from Screen
218	151	DA97	Delay Short
218	163	DAA3	Delay Long
218	175	DAAF	Draw Wide Entity Sprite
221	249	DDF9	Bytes After Wide Sprite Draw
224	3	E003	Process Entity Record
225	34	E122	Spawn Wave Enemies
225	182	E1B6	Handle Horizontal Enemy Entity
226	42	E22A	Begin Enemy Death Animation
226	98	E262	Find Colliding Wave Enemy
226	144	E290	Spawn Horizontal Wave Enemies
226	200	E2C8	Pick Random Spawn Position
226	253	E2FD	Clamp Entity Velocity
227	28	E31C	Build Entity Spawn Record
227	70	E346	Apply Direction Delta
227	96	E360	Process Tracked Enemy Entity
228	146	E492	Tick Entity Colour Timer
228	167	E4A7	Retire Expired Entity
228	185	E4B9	Kill Tracked Enemy Entity
229	32	E520	Process Cluster Entity
230	180	E6B4	Retire Cluster Entity
230	196	E6C4	Apply Entity Velocity
230	247	E6F7	Process Player Tracking Enemy
231	175	E7AF	Direction Animation Offset Table
231	207	E7CF	Spawn Tracked Enemy Entities
232	99	E863	Evaluate and Spawn Tracked Enemies
232	129	E881	Process Wall Bouncing Enemy
233	44	E92C	Spawn Wall Bouncing Enemies
233	116	E974	Kill Wall Bouncing Enemy
233	204	E9CC	Animate Wall Bouncing Enemy Death
234	15	EA0F	Enemy Colour Cycle Table
234	23	EA17	Handle Enemy Collision Chain
234	110	EA6E	Process Replacement Enemy Entity
234	247	EAF7	Enemy Direction Code Table
235	7	EB07	Process Final Phase Enemy Entity
235	180	EBB4	Enemy Movement Delta Table
235	188	EBBC	Game Entry Point
235	200	EBC8	Display High Score Entry Screen
236	164	ECA4	Initialise Display and Set Border
236	222	ECDE	Display Loop Delay
236	230	ECE6	Check BREAK Key
236	251	ECFB	Check S Key During Display
237	16	ED10	Save Or Load High Scores
237	113	ED71	Check Any Key During Display
237	124	ED7C	Scan and Cycle Screen Attributes
237	147	ED93	Scan Score Display Attributes
237	170	EDAA	Adjust Score Field Cursor
237	221	EDDD	Adjust Name Entry Cursor
238	2	EE02	Search Score Entry Table
238	11	EE0B	Calculate Attribute Cell Address
238	29	EE1D	Highlight Score Entry Row
238	40	EE28	Data block at EE28
238	46	EE2E	Data block at EE2E
238	73	EE49	Score Entry Field Three Table
238	102	EE66	Messaging: Select Options
239	188	EFBC	Messaging: Tape Error
239	221	EFDD	Messaging: High Score Error
240	77	F04D	Fill Row
240	88	F058	Fill Column
240	99	F063	Draw Colour Ring
240	146	F092	Draw Concentric Rings
240	157	F09D	Draw Colour Border
240	174	F0AE	Fill Border Attributes
240	222	F0DE	Border Colour Pairs
240	238	F0EE	Cycle Border Colour
241	7	F107	Print BCD Score
241	101	F165	Table: Robotron Heroes
241	171	F1AB	Messaging: High Score Name
241	192	F1C0	Table: High Scores
242	216	F2D8	Messaging: Robotron Heroes
242	249	F2F9	Draw Score Entry
243	141	F38D	Messaging: All Time Heroes
243	174	F3AE	Display High Score Screen
244	90	F45A	Messaging: Save / Load
244	136	F488	Draw Colour Flash Rectangle
244	236	F4EC	Attract Mode Loop
245	29	F51D	Advance Colour Cycle
245	77	F54D	Colour Cycle Table
245	84	F554	Screen Colour Cycle Pointer
245	86	F556	Data block at F556
245	88	F558	Intro Sprite Table
245	158	F59E	Intro Colour Cycle Pointer
245	160	F5A0	Advance Intro Colour Cycle
245	183	F5B7	Intro Colour Cycle Table
245	187	F5BB	Advance Flash Colour Cycle
245	210	F5D2	Flash Colour Cycle Table
245	218	F5DA	Extra Life Flash Effect
246	6	F606	OR Blit Title Strips
246	55	F637	Draw Attract Title
246	112	F670	Messaging: Credits
246	195	F6C3	Read Control Input
246	216	F6D8	Common Control Input Return
246	221	F6DD	Control Handler Table
246	233	F6E9	Read Keyboard Combined
246	238	F6EE	Read Keyboard Split
246	250	F6FA	Read Keyboard Rows
247	4	F704	Read Control Kempston
247	30	F71E	Read Control Sinclair
247	61	F73D	Read Control Fuller
247	82	F752	Read Control Cursor
247	111	F76F	XOR Blit Sprite
247	238	F7EE	Animate Intro Sprites
248	60	F83C	Draw Intro Sprites
248	84	F854	Game status buffer entry at F854