Highway Encounter

Memory map

Page	Byte	Address	Description
64	0	4000	Screen
91	0	5B00	Font
113	0	7100	Sprites
121	0	7900	Data block
122	0	7A00	Table with sprite addresses
123	0	7B00	Global objects table, 16 bytes per record, max 240 records
138	0	8A00	Objects table, 9 fixed records, 16 bytes each record
138	144	8A90	Objects table, 44 dynamic records, 16 bytes each
141	82	8D52	List of objects to draw, order from far to nearest by Z-coord
142	0	8E00	Table used in object movement procedure, 8 bytes each record
143	0	8F00	Variables
143	121	8F79	Redirects
143	137	8F89	Pending object movement-tick count
143	138	8F8A	Advance object movement timers by pending ticks
143	176	8FB0	Text
144	0	9000	Continuation points, see 9E6C
144	242	90F2	GAME MODE
146	50	9232	Text
146	206	92CE	Prepare objects for the current Zone
147	148	9394	Draw digit with size of 16x24 pixels into the ZONE indicator
147	183	93B7	Build the current-zone object list from the master object table
148	35	9423	Initializing objects tables
149	54	9536	Data block at 9536
149	227	95E3	Data block at 95E3
149	239	95EF	Prepare shadow screen, show the screen
150	51	9633	Draw zone border line
150	88	9658	Draw zone land
152	34	9822	Remove objects from the shadow screen
152	90	985A	Sort Objects
153	51	9933	Draw sprite with shift by -2px
153	128	9980	Sort Objects: flag a drawn sprite's char-cells for redraw
153	209	99D1	Draw sprite with shift by 4px
154	38	9A26	Draw sprite with shift by 2px
154	112	9A70	Draw sprite with no shift
154	155	9A9B	Redraw changes
155	252	9BFC	Redraw table: 18 records used to draw the shadow screen
156	123	9C7B	Process object movement
160	59	A03B	Objects logic
161	11	A10B	Restore one unit of power
161	27	A11B	Objects logic: perform the action
162	112	A270	Get the next random number
162	141	A28D	Data block at A28D
162	145	A291	Intro
163	77	A34D	Routine (the most used one)
163	103	A367	Run the DEMO MODE loop
163	211	A3D3	Prepare screen and indicators
164	20	A414	Increment the score
164	80	A450	Check Score
164	128	A480	Data block
165	70	A546	Draw Rough
166	23	A617	Animation in Zone 30
166	119	A677	Zone 30 animation: draw an 8-column glyph strip to the screen
166	148	A694	Zone 30 animation: run the DEMO scroll to Zone 36, then tear down
168	197	A8C5	Show one screen in DEMO mode
168	214	A8D6	Draw zone specials
170	255	AAFF	Spacecraft sprite data
176	222	B0DE	Start point
178	3	B203	Sound
178	30	B21E	Text
178	218	B2DA	Prepare shadow screen
179	60	B33C	Draw the "HIGHWAY ENCOUNTER" big sign
179	154	B39A	Prepare screen
179	216	B3D8	Title screen: animate one pyramid block appearing
180	27	B41B	Draw the current pyramid-block sprite (abort on keypress)
180	208	B4D0	Show Info Screen
181	45	B52D	Print Small Font Signs on the Info Screen
181	215	B5D7	Small Font
182	44	B62C	Info Screen Small Font Signs
183	181	B7B5	Info Screen Text
184	144	B890	Print Text
184	240	B8F0	Masks and Sprites
217	0	D900	Shadow screen