Chase H.Q.: Memory map

Page	Byte	Address	Description
64	0	4000	Screen memory
91	0	5B00	The game has loaded
91	215	5BD7	Padding bytes
92	0	5C00	[Stage 1] Horizon graphic
92	240	5CF0	[Stage 1] Per-stage data
93	12	5D0C	[Stage 1] Table of addresses of LODs
93	26	5D1A	[Stage 1] Per-stage difficulty settings
93	29	5D1D	[Stage 1] Per-stage setup data
93	43	5D2B	[Stage 1] Per-stage attract mode data
93	57	5D39	[Stage 1] Nancy's perp description
93	237	5DED	[Stage 1] Arrest messages
94	63	5E3F	[Stage 1] Graphics definitions
94	196	5EC4	[Stage 1] Map: Start stretch
95	210	5FD2	[Stage 1] Map: Left fork
96	136	6088	[Stage 1] Map: Right fork (dirt track)
97	115	6173	[Stage 1] Map: Tunnel section
97	212	61D4	[Stage 1] Map: Loop section
99	138	638A	[Stage 1] Ralph the Idaho Slasher's mugshot
100	62	643E	[Stage 1] LODs
118	54	7636	[Stage 1] Spare space
118	240	76F0	[Graphics] Turbo icons
119	152	7798	[Pre-game] Messages
119	216	77D8	[Pre-game] Drawing commands for the pre-game screen
122	15	7A0F	[Graphics] Smoke and fire graphics
123	233	7BE9	[Graphics] Faces
126	5	7E05	[Graphics] Street lamps etc.
127	141	7F8D	Unused
128	0	8000	Game status buffer entry at 8000
128	8	8008	Unused
128	20	8014	Load a stage
128	185	80B9	Tape loading
129	221	81DD	[Messages] Start of stage chatter
130	4	8204	Generates engine noise (48K)
130	88	8258	Attract mode
131	124	837C	Unused
131	181	83B5	Indirect calls for 48K/128K features
131	205	83CD	Bootstrap / Über main loop
132	1	8401	Main loop
133	42	852A	CPU driver for attract mode
133	140	858C	Pre-game radio screen ("CHASE HQ MONITORING SYSTEM")
133	228	85E4	Reveals the perp's car on the pre-game screen
134	15	860F	Animate the signal meters
134	90	865A	Draw the pre-game screen
134	246	86F6	Routine at 86F6
135	26	871A	Escape scene setup data
135	60	873C	Escape scene
135	220	87DC	Sets up the stage
136	118	8876	User input checking
136	213	88D5	Clears the game screen attributes to zero
136	226	88E2	Clears the game screen attributes and the game screen to zero
136	242	88F2	Starts a sound effect
137	3	8903	Drives sound effects
137	96	8960	Crash sound effect
137	217	89D9	"Thud" sound effect
138	15	8A0F	Cornering sound effect
138	54	8A36	"Bip" or "Bow" sound effect
138	87	8A57	Handle perp caught
140	58	8C3A	Fully smashed
140	88	8C58	End of level messages
141	143	8D8F	Drives transitions (scene fades)
141	249	8DF9	Seems to setup a transition
142	41	8E29	Fills the attribute bytes leftwards from column 1
142	66	8E42	Draw overlay messages
142	108	8E6C	Print a message
142	126	8E7E	Setup overlay messages
142	145	8E91	Copies the mugshots onto the screen when perp is caught
142	183	8EB7	Draws a mugshot
142	231	8EE7	Draw the smash bar
143	95	8F5F	Draws anything that's not the road or the hero car
144	82	9052	Draws overhead graphics.
145	108	916C	Draws stretchy objects, such as trees.
146	77	924D	Draws tunnel lights (and possibly other bitmaps)
146	120	9278	Draws objects (left hand version)
146	225	92E1	Draws objects (right hand version)
148	156	949C	Sprite plotter for back buffer, up to 64px wide, 15px high, no mask, no flip
149	66	9542	Sprite plotter for back buffer, up to 64px wide, 15px high, no mask, flips
150	24	9618	Random number generator
150	46	962E	In-game message variables
150	63	963F	In-game messages
152	169	98A9	In-game chatter structures
153	69	9945	Start chatter
153	101	9965	Runs chatter, mugshots and noise effect
153	236	99EC	Shows the chatter - the alerts and remarks from the game's characters
154	85	9A55	Noise in/out effect used for mugshots
154	171	9AAB	Plots a face
154	236	9AEC	Plot mini font characters
155	167	9BA7	Clear the whole message line
155	207	9BCF	Game timer
156	194	9CC2	Increments score in proportion to current speed
156	214	9CD6	Add a bonus
157	23	9D17	Increments the score by (D,E,A)
157	46	9D2E	Calculate overtake bonus
157	81	9D51	Update scoreboard and flashing lights
157	244	9DF4	Toggle the light's BRIGHT bit (HL -> attrs)
158	17	9E11	Draws the turbo sprites and updates the displayed scores
159	71	9F47	Plots an 8x15 LED font digit
159	153	9F99	Another draw string entry point?
159	180	9FB4	Draws a character (to buffer or screen?)
160	204	A0CC	Keyscan
161	57	A139	Game status buffer entry at A139
162	122	A27A	Font: 8x7 bitmap
163	153	A399	Checks for collisions
165	121	A579	Lays out roadside objects
166	14	A60E	Counters
166	35	A623	Hazard template
166	55	A637	Smash/chase handling
167	231	A7E7	Data block at A7E7
167	243	A7F3	Spawns cars
168	156	A89C	Returns the lanes that cars can spawn in
168	205	A8CD	Hazard handler routine? Triggered at road fork
169	85	A955	Chooses random dirt and stones (not tumbleweeds though)
169	126	A97E	Lays out dirt and stones
169	222	A9DE	Dust/Stones stuff
170	56	AA38	Draw the helicopter
170	198	AAC6	Move the helicopter
171	51	AB33	Helicopter
171	154	AB9A	Spawn hazards
172	60	AC3C	Test for collision with hazard
173	13	AD0D	Routine at AD0D spawning/collision related
173	81	AD51	Routine at AD51 hazard related
173	160	ADA0	Draws hazards
176	69	B045	Hero car jump table
176	89	B059	Sub-table (another byte pair)
176	99	B063	Hero car jumps; gear changing; turbos; off road checks; speed adjustment; turning
179	24	B318	Animates the hero car.
180	204	B4CC	Perp sighted
180	240	B4F0	Smash handling
181	73	B549	Draws the debris
181	142	B58E	Draws the car
182	72	B648	Draw the hero car's smoke
182	124	B67C	Likely NOT just drawing the cherry
182	158	B69E	This entry point is used by the routine at animate_hero_car.
182	214	B6D6	This entry point is used by the routines at draw_car and draw_smoke.
183	22	B716	Masked sprite plotter
183	108	B76C	Masked sprite plotter which flips
183	239	B7EF	Masked sprite plotter variant TBD
184	40	B828	Horizon image related
184	72	B848	Scroll the horizon
184	210	B8D2	Horizon stuff / Car jumping stuff
185	244	B9F4	Lays out the road
187	105	BB69	Handle exiting from a road fork
188	62	BC3E	Copies the backbuffer at $F000 to the screen (and sets attributes)
189	193	BDC1	Clears screen then sets in-game attributes
189	251	BDFB	Map reader
192	225	C0E1	Set up the tunnel
193	91	C15B	Tunnel entrance/interior/exit drawing code
194	231	C2E7	Routine at C2E7
196	82	C452	Draws the road
200	190	C8BE	Builds a pre-shifted version of the backdrop horizon image
200	227	C8E3	Forked road plotting
203	164	CBA4	Routine at CBA4
203	197	CBC5	Routine at CBC5
203	206	CBCE	Road drawing - curvature stuff?
205	58	CD3A	Seems to build the height table at $E300 and $E336.
205	214	CDD6	Multiplier
205	236	CDEC	Data block at CDEC
205	244	CDF4	Pointers to car-on-fire LODs
206	0	CE00	Data block at CE00
206	12	CE0C	Smoke tables
206	51	CE33	Used by B4FD - four groups of three words
206	170	CEAA	[Graphics] Debris
206	218	CEDA	Hero car drawing instructions
223	98	DF62	[Graphics] LED style numeric font used for scores
223	248	DFF8	[Graphics] Mini font used for in-game messages
224	178	E0B2	Graphics defns <Byte width, Flags, Height, Ptr, Ptr>
225	233	E1E9	Referenced by graphic entry 1 and 10
226	164	E2A4	Data for perp escape scene
226	198	E2C6	Data for road forks
226	222	E2DE	Data for road fork exits
227	0	E300	Data block at E300
227	32	E320	Data block at E320
227	53	E335	Unused
227	54	E336	Data block at E336
227	75	E34B	Horizon values
227	78	E34E	Unused
227	79	E34F	Data block at E34F
227	100	E364	Transition masks
227	244	E3F4	Unused
228	16	E410	[Graphics] Road edge markings
228	208	E4D0	[Graphics] Road lane markings
229	0	E500	Outward bend table
229	64	E540	Inward bend table
230	0	E600	Road/object animation tables
232	16	E810	Called once the memory map has been setup
232	254	E8FE	"Stop the tape" handler (48K mode only)
233	180	E9B4	Messages
235	247	EBF7	Renders strings until it hits a NUL byte
235	255	EBFF	Renders a string
236	44	EC2C	Renders a single character
236	218	ECDA	Clears the screen
236	243	ECF3	Runs the redefine keys screen (48K mode only)
237	77	ED4D	Keyscan
237	109	ED6D	Defines a single key.
237	214	EDD6	Names of keys, two characters per key.
238	38	EE26	Sinclair joystick input scheme
238	43	EE2B	Cursor joystick input scheme
238	48	EE30	Keydefs for "SHOCKED<ENTER>"
238	56	EE38	Temporary keydefs
238	64	EE40	Interrupt setup
238	94	EE5E	Reset music
238	110	EE6E	Setup the next music pattern
238	158	EE9E	Play menu music (48K mode only)
239	25	EF19	Interrupt entry point
239	34	EF22	Drum sample player
240	198	F0C6	White noise generator
240	254	F0FE	Music patterns
241	17	F111	Music data
242	32	F220	128K mode routines and data
242	81	F251	Start the siren sound effect.
242	105	F269	Plays the siren sound effect.
242	157	F29D	Routine at F29D
242	162	F2A2	writing the full register set?
242	182	F2B6	Plays engine effect.
242	241	F2F1	Routine at F2F1
242	250	F2FA	Plays turbo effect, exits via engine effect.
243	46	F32E	Play speech
243	159	F39F	something done in phase 4 when perp is caught (play sample?)
243	182	F3B6	Call a routine in bank 3
243	226	F3E2	Routine at F3E2
244	20	F414	Routine at F414
244	27	F41B	Routine at F41B
244	145	F491	Credits / Score messages show in attract mode
245	190	F5BE	Status panel initial image
253	190	FDBE	Status panel initial attributes
254	190	FEBE	Unused