Chase H.Q.: Memory map

Page	Byte	Address	Description
64	0	4000	Screen memory
91	0	5B00	The game has loaded
91	215	5BD7	Unused
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 game 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] Initial map segment
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] Data
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
130	88	8258	Attract mode
131	124	837C	Unused
131	181	83B5	Indirect calls for 48K/128K features
131	205	83CD	Bootstrap / Uber main loop
132	1	8401	Main loop
133	42	852A	CPU driver
133	140	858C	Pre-game radio screen ("CHASE HQ MONITORING SYSTEM")
133	221	85DD	Possibly dead code
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 game or the level?
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	Sound effect - crash
137	217	89D9	Sound effect - thud
138	15	8A0F	Sound effect - cornering
138	54	8A36	Sound effect - "bip-bow"
138	87	8A57	Handle perp caught
140	58	8C3A	Fully smashed
140	88	8C58	End of level messages
141	143	8D8F	Drives transitions
141	249	8DF9	Seems to setup a transition
142	41	8E29	Fills the attribute bytes leftwards from column 1
142	66	8E42	Subroutine
142	108	8E6C	Print a message
142	126	8E7E	Message printing related, called for TIME UP, CONTINUE, etc. 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	Routine at 8F5F
144	35	9023	Routine at 9023
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	Set up 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	Routine at A579
166	14	A60E	Counters
166	35	A623	Hazard template
166	55	A637	Smash 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 split
169	85	A955	main_loop_18
169	126	A97E	main_loop_20
169	222	A9DE	Dust/Stones stuff
170	56	AA38	Helicopter related
170	198	AAC6	Routine at AAC6
171	51	AB33	Helicopter
171	154	AB9A	Routine at AB9A
172	60	AC3C	Test for collision with hazard
173	13	AD0D	Routine at AD0D
173	81	AD51	Routine at AD51
173	160	ADA0	Draws all hazards
176	69	B045	Hero car jump table
176	99	B063	Hero car jumps; gear changing; off road checks; speed adjustment
179	24	B318	Routine at B318
180	204	B4CC	Perp sighted
180	240	B4F0	Smash handling
181	73	B549	Routine at B549
181	142	B58E	Draws the car
182	72	B648	Draw the hero car's smoke
182	124	B67C	Routine at B67C
183	22	B716	Masked sprite plotter
183	108	B76C	Masked sprite plotter which flips
183	239	B7EF	Routine at B7EF
184	40	B828	Horizon image related
184	72	B848	Routine at B848
184	210	B8D2	Routine at B8D2
185	244	B9F4	Routine at B9F4
187	105	BB69	Setup for road handling perhaps split related
188	62	BC3E	Copies the backbuffer at $F000 to the screen
189	193	BDC1	Clears screen then sets in-game attributes
189	251	BDFB	Map reader
192	225	C0E1	Tunnel setup?
193	91	C15B	Tunnel entrance/interior/exit drawing code
194	231	C2E7	Routine at C2E7
196	82	C452	Landscape related
197	124	C57C	smells like scanline/buffer pointer movement
197	138	C58A	ditto
197	152	C598	Road and backdrop plotting
200	190	C8BE	Builds a pre-shifted version of the backdrop horizon image
200	227	C8E3	Split road plotting
203	164	CBA4	Routine at CBA4
203	197	CBC5	Routine at CBC5
203	206	CBCE	Routine at CBCE - road drawing stuff
205	58	CD3A	Routine at CD3A
205	214	CDD6	Multiplier
205	236	CDEC	Data block at CDEC these are words, but not ptrs
206	51	CE33	Used by B4FD - groups of six bytes
206	170	CEAA	Used by B578 4 frames, all 8x6 masked
206	218	CEDA	Hero car drawing instructions
223	98	DF62	LED style numeric font used for scores
223	248	DFF8	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 splits
227	75	E34B	Data block at E34B
227	100	E364	Transition masks
229	64	E540	A table of 96 words being 10^x or similar function
230	0	E600	Data block at E600
232	16	E810	Called once the memory map has been setup
232	254	E8FE	Routine at E8FE
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
237	77	ED4D	Keyscan
237	109	ED6D	Routine at ED6D
237	214	EDD6	Names of keys
238	38	EE26	Sinclair joystick input scheme
238	43	EE2B	Cursor joystick input scheme
238	48	EE30	"SHOCKED<ENTER>" ?
238	56	EE38	temp input scheme buffer?
238	61	EE3D	Bytes copied to $A0CD
238	64	EE40	Interrupt setup
238	94	EE5E	Routine at $EE5E -- suspect a music reset routine
238	110	EE6E	Routine at EE6E
238	158	EE9E	Define keys
239	25	EF19	Routine at $EF19
239	34	EF22	Drum sample player
240	198	F0C6	White noise generator?
240	254	F0FE	Music data
242	32	F220	128K mode routines and data
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