Memory map

Page	Byte	Address	Description
64	0	16384	Loading Screen
96	0	24576	Entity List
97	0	24832	Entity List Base
109	125	28029	Game status buffer entry at 6D7D
113	69	28997	Data block at 7145
113	120	29048	Data block at 7178
113	192	29120	Data block at 71C0
114	128	29312	Data block at 7280
117	0	29952	Entity Sprite: Enforcer
120	0	30720	Data block at 7800
120	192	30912	Data block at 78C0
121	64	31040	Data block at 7940
122	0	31232	Entity Sprite: Blank 1
128	0	32768	Print State: Y Position
128	1	32769	Print State: X Position
128	2	32770	Print State: Bit-Shift Count
128	3	32771	Print State: Character Code
128	4	32772	Print State: Attribute Byte
128	5	32773	Print State: Left Margin
128	6	32774	Print State: Right Margin
128	7	32775	Print State: Flags
128	8	32776	Print State: Font Bitmap Pointer
128	10	32778	Print State: Handler Pointer
128	12	32780	Print State: Normal Width
128	13	32781	Print State: Narrow Width
128	14	32782	Print State: Wide Width
128	15	32783	Print State: Space Width
128	16	32784	Print State: Line Height
128	17	32785	Print State: Row Count
129	0	33024	Font UDGs
135	0	34560	Entity Sprite: Points
138	0	35328	Column Pixel Lookup Table
140	0	35840	Screen Row Address Lookup Table
141	128	36224	Plot Screen Pixel
141	204	36300	Print Dispatch
141	221	36317	Print Dispatch Return
141	227	36323	Print Handler
142	15	36367	Print Handler: Newline
142	35	36387	Print Handler: Unsupported
142	46	36398	Print Handler: Ink
142	61	36413	Print Handler: Paper
142	82	36434	Print Handler: Flash
142	101	36453	Print Handler: Bright
142	120	36472	Print Handler: Print At X
142	130	36482	Print Handler: Print At Y
142	146	36498	Print Handler: Tab
142	170	36522	Print Handler: Left Margin
142	179	36531	Print Handler: Right Margin
142	199	36551	Print Handler: Select Font
142	230	36582	Print Handler: Mask Parameter
142	247	36599	Print Handler: Render
143	208	36816	Control Code Dispatch Table
143	230	36838	Font Configuration Table
143	242	36850	Game status buffer entry at 8FF2
144	6	36870	Print Messaging
144	16	36880	Initialise Print Tables
144	68	36932	Reset Print State
144	81	36945	Messaging: Reset
144	99	36963	Routine at 9063
145	0	37120	Entity Sprite: Player
148	0	37888	Entity Sprite: Mommy
154	0	39424	Entity Sprite: Daddy
160	0	40960	Entity Sprite: Mikey
166	0	42496	Entity Sprite: Hulk
172	0	44032	Entity Sprite: Enforcer Bullets
173	128	44416	Entity Sprite: Spheroid
181	0	46336	Entity Sprite: Test
184	0	47104	Entity Sprite: Brain
190	0	48640	Entity Sprite: Blank 2
196	0	50176	Game Entry Point Alias
196	3	50179	Player 1 State
196	8	50184	Wave Number
196	9	50185	Wave Definition Pointer
196	20	50196	Game status buffer entry at C414
196	21	50197	Lives
196	22	50198	Wave
196	23	50199	Lives Display Vertical Step
196	24	50200	Extra Life Compare Byte 0
196	25	50201	Extra Life Compare Byte 1
196	26	50202	Extra Life Compare Byte 2
196	27	50203	Extra Life Compare Byte 3
196	28	50204	Active Enemy Count
196	29	50205	Wave Display X Pixel Position
196	30	50206	Two-Player Session Flag
196	35	50211	Wave Enemy Count
196	36	50212	Wave Enemy Type
196	39	50215	Table: Slot Count
196	46	50222	Border Colour
196	47	50223	Bouncing Enemy Count
196	71	50247	Player 2 State
196	110	50286	Game status buffer entry at C46E
196	139	50315	Player State Swap Buffer
196	207	50383	Entity Spawn Timer
196	209	50385	Playfield Entity List Pointer
196	211	50387	Intro Closing Sprite
196	212	50388	Player Y Position
196	213	50389	Player X Position
196	218	50394	Entity Record Pointer
196	220	50396	RNG Seed
196	222	50398	Wave Active Flag
196	229	50405	Colour Cycle Table Pointer
196	243	50419	Cached Spawn Pixels
196	248	50424	Attract Mode Frame Counter
196	249	50425	Title Strip Blit Parameters
196	253	50429	Game status buffer entry at C4FD
196	254	50430	Game status buffer entry at C4FE
196	255	50431	Game status buffer entry at C4FF
197	0	50432	Game status buffer entry at C500
197	1	50433	Game status buffer entry at C501
197	2	50434	Game status buffer entry at C502
197	3	50435	Game status buffer entry at C503
197	8	50440	Border Colour Step
197	9	50441	Entity List Write Pointer
197	11	50443	Entity List Snapshot
197	13	50445	Entity List Working Pointer
197	15	50447	Entity Pointer Stash
197	23	50455	Player Y Direction
197	24	50456	Player X Direction
197	25	50457	Wave Start Pointer
197	27	50459	Animation Frame Pair
197	33	50465	Entity State Pointer
197	47	50479	Entity State Flag
197	49	50481	Wave Sprite Frame Counter
197	50	50482	Death Sequence Mode
197	51	50483	Wave Start Delay
197	52	50484	Animation Frame Counter One
197	54	50486	Animation Frame Counter Two
197	68	50500	Print Player Score
197	193	50625	Check Score Award Life
198	12	50700	Sprite Pixel Data Table
198	174	50862	Movement Delta Table
198	206	50894	Lookup Vector Table Entry
198	218	50906	Hit Test: 8-Byte Bounds Pair
199	2	50946	Dispatch Handler Pointer From HL
199	12	50956	Help Bar Attribute Sequence
199	19	50963	Update Attribute Bar
199	125	51069	Poll H Key
199	148	51092	Draw Lives Display
199	207	51151	Narrow Entity Sprite Data
200	79	51279	Erase Narrow Entity Sprite
200	86	51286	Draw Narrow Entity Sprite
201	73	51529	Erase Wide Entity Sprite
201	80	51536	Draw Wide Entity Sprite
203	79	52047	Main Game Loop
204	129	52353	Draw Spawned Entity
204	206	52430	Primary Enemy Entity Handler
204	233	52457	Process Enemy Entity
205	19	52499	Advance Entity Pointer
205	24	52504	Find Colliding Entity
205	52	52532	Clear Colour Bar Column
205	80	52560	Handle Homing Enemy
206	100	52836	Apply Wave Border Colour
206	114	52850	Compute Entity Approach Position
206	185	52921	Animate Wave Start Sequence
206	223	52959	Step Narrow Entity Approach
207	51	53043	Dispatch Narrow Entity Approach
207	82	53074	Step Wide Entity Approach
207	164	53156	Paint Narrow Entity Attributes
208	4	53252	Paint Wide Entity Attributes
208	112	53360	Clear Screen Buffer
208	126	53374	Set Background Colour
208	139	53387	Swap Player State
208	167	53415	Print Wave Number
208	230	53478	Messaging: Wave
208	240	53488	Spawn Primary Wave Enemies
209	168	53672	Advance RNG Seed
209	191	53695	Generate Random Byte
210	76	53836	Stage Next Wave
210	188	53948	Strip Attributes and Fade
211	12	54028	Clear Screen and Render HUD
211	23	54039	Render HUD
211	71	54087	Messaging: Player
211	86	54102	Messaging: Game Over
211	103	54119	Player Death
211	228	54244	Game status buffer entry at D3E4
211	248	54264	Player Death: Tape Load Continue
212	129	54401	Messaging: Reset Margins
212	134	54406	Draw Life Icon Cells
212	187	54459	Erase Life Icon Cells
212	241	54513	Entity Type By Direction Table
213	1	54529	Intro Sprite Template
213	13	54541	Intro Sprite State
213	25	54553	Initialise Wave Start Sprites
213	42	54570	Animate Wave Start Sprites
213	98	54626	Draw Playfield Border Row
213	112	54640	Draw Playfield Border
213	177	54705	Remove Entity from List
214	32	54816	Sprite Frame Table
214	48	54832	Erase Entity Sprite
214	55	54839	Draw Entity Sprite
215	148	55188	Draw Clipped Wide Sprite
217	196	55748	Initialise Entity State
217	224	55776	Dispatch Entity State Handler
217	234	55786	Entity State Table
218	42	55850	Cycle Border from Screen
218	151	55959	Delay Short
218	163	55971	Delay Long
218	175	55983	Draw Wide Entity Sprite
221	249	56825	Bytes After Wide Sprite Draw
224	3	57347	Process Entity Record
225	34	57634	Spawn Wave Enemies
225	182	57782	Handle Horizontal Enemy Entity
226	42	57898	Begin Enemy Death Animation
226	98	57954	Find Colliding Wave Enemy
226	144	58000	Spawn Horizontal Wave Enemies
226	200	58056	Pick Random Spawn Position
226	253	58109	Clamp Entity Velocity
227	28	58140	Build Entity Spawn Record
227	70	58182	Apply Direction Delta
227	96	58208	Process Tracked Enemy Entity
228	146	58514	Tick Entity Colour Timer
228	167	58535	Retire Expired Entity
228	185	58553	Kill Tracked Enemy Entity
229	32	58656	Process Cluster Entity
230	180	59060	Retire Cluster Entity
230	196	59076	Apply Entity Velocity
230	247	59127	Process Player Tracking Enemy
231	175	59311	Direction Animation Offset Table
231	207	59343	Spawn Tracked Enemy Entities
232	99	59491	Evaluate and Spawn Tracked Enemies
232	129	59521	Process Wall Bouncing Enemy
233	44	59692	Spawn Wall Bouncing Enemies
233	116	59764	Kill Wall Bouncing Enemy
233	204	59852	Animate Wall Bouncing Enemy Death
234	15	59919	Enemy Colour Cycle Table
234	23	59927	Handle Enemy Collision Chain
234	110	60014	Process Replacement Enemy Entity
234	247	60151	Enemy Direction Code Table
235	7	60167	Process Final Phase Enemy Entity
235	180	60340	Enemy Movement Delta Table
235	188	60348	Game Entry Point
235	200	60360	Display High Score Entry Screen
236	164	60580	Initialise Display and Set Border
236	222	60638	Display Loop Delay
236	230	60646	Check BREAK Key
236	251	60667	Check S Key During Display
237	16	60688	Save Or Load High Scores
237	113	60785	Check Any Key During Display
237	124	60796	Scan and Cycle Screen Attributes
237	147	60819	Scan Score Display Attributes
237	170	60842	Adjust Score Field Cursor
237	221	60893	Adjust Name Entry Cursor
238	2	60930	Search Score Entry Table
238	11	60939	Calculate Attribute Cell Address
238	29	60957	Highlight Score Entry Row
238	40	60968	Data block at EE28
238	46	60974	Data block at EE2E
238	73	61001	Score Entry Field Three Table
238	102	61030	Messaging: Select Options
239	188	61372	Messaging: Tape Error
239	221	61405	Messaging: High Score Error
240	77	61517	Fill Row
240	88	61528	Fill Column
240	99	61539	Draw Colour Ring
240	146	61586	Draw Concentric Rings
240	157	61597	Draw Colour Border
240	174	61614	Fill Border Attributes
240	222	61662	Border Colour Pairs
240	238	61678	Cycle Border Colour
241	7	61703	Print BCD Score
241	101	61797	Table: Robotron Heroes
241	171	61867	Messaging: High Score Name
241	192	61888	Table: High Scores
242	216	62168	Messaging: Robotron Heroes
242	249	62201	Draw Score Entry
243	141	62349	Messaging: All Time Heroes
243	174	62382	Display High Score Screen
244	90	62554	Messaging: Save / Load
244	136	62600	Draw Colour Flash Rectangle
244	236	62700	Attract Mode Loop
245	29	62749	Advance Colour Cycle
245	77	62797	Colour Cycle Table
245	84	62804	Screen Colour Cycle Pointer
245	86	62806	Data block at F556
245	88	62808	Intro Sprite Table
245	158	62878	Intro Colour Cycle Pointer
245	160	62880	Advance Intro Colour Cycle
245	183	62903	Intro Colour Cycle Table
245	187	62907	Advance Flash Colour Cycle
245	210	62930	Flash Colour Cycle Table
245	218	62938	Extra Life Flash Effect
246	6	62982	OR Blit Title Strips
246	55	63031	Draw Attract Title
246	112	63088	Messaging: Credits
246	195	63171	Read Control Input
246	216	63192	Common Control Input Return
246	221	63197	Control Handler Table
246	233	63209	Read Keyboard Combined
246	238	63214	Read Keyboard Split
246	250	63226	Read Keyboard Rows
247	4	63236	Read Control Kempston
247	30	63262	Read Control Sinclair
247	61	63293	Read Control Fuller
247	82	63314	Read Control Cursor
247	111	63343	XOR Blit Sprite
247	238	63470	Animate Intro Sprites
248	60	63548	Draw Intro Sprites
248	84	63572	Game status buffer entry at F854