Routines

Address	Description
5B80	Decryption Routine
5C80	Start Game
6113	Choose Item Sites
71D3	Make Click
71E0	Play Square Wave
71F0	Play Arrival Sound
71FE	Play Pick-Up Sound
7204	Play Unused Sound
720A	Play Object Warble
7217	Play Warble
7234	Play Flutter Sound
724C	Play Hit Sound
725C	Play Change Sound
7263	Play Bump Sound
7275	Play Moving Sound
7293	Play Crash Sound
72A5	Play Short Crash Sound
72AB	Play Explosion Sound
72CA	Play Explosion Hit Sound
72CF	Play Beam Sound
72F2	Play Shot Sound
7303	Play Patterned Noise
7311	Play Noise Burst
7318	Play Removal Sound
8347	Adjust Terrain Slope
838B	Adjust Second Slope Tile
83A1	Adjust First Slope Tile
83CE	Print Text Repeatedly
83D6	Complete Planet
8615	Run Title Menu
8652	Draw Menu Options
8666	Draw Menu Option
8690	Update Control Icon
86B9	Read Menu Keys
86E4	Change Control Method
8792	Spawn Special Enemy
87AF	Update Enemy Spawning
87F6	Find Free Slot
8813	Fire Random Shot
8820	Fire Shot When Hit
882B	Fire Shot
890D	Set Random Speed
8934	Set Falling Speed
8970	Reverse Vertical Speed
8986	Swap Objects
898E	Copy Position
89D3	Spawn Enemy
8C05	Accelerate Object
8C3F	Limit Speed To Range
8C58	Accelerate Towards Player
8CB2	Explode Player Ship
8D29	Start Debris Piece
8D3D	Skip Enemy Slot
8D42	Update Enemies
8E21	Count Active Enemy
8E2D	Apply Collision Effects
8ECA	Apply Player Collision
8F1E	Slow Ship
8F54	Damage Ship
8FC4	Drain Fuel
8FCA	Bounce Ship
900B	Destroy Object
9015	Add Fuel
9020	Add Ship
9030	Mark Object Hit
9035	Explode Hit Object
903D	Start Explosion
9056	Nudge Object
909A	Move Object Back And Forth
90A7	Move Object And Stop
90CD	Reverse Object Speed
90EC	Process Object Flags
910A	Step Object State
9143	Find Hit Position
917C	Check Shot Collisions
9234	Score Destroyed Object
925E	Add To Score
92B4	Choose Target
92FA	Set Facing
9307	Update Chasing Object
9341	Accelerate Towards Target
938D	Update Object
93F2	Update Type 13 Object
9457	Update Type 1C Object
9494	Update Type 1D Object
94A8	Update Type 19 Object
9507	Update Type 14 Object
9524	Update Type 1E Object
955F	Set Object Position
9572	Update Crystal Stack
96D8	Update Type 15 Object
9724	Start Crystal Object
97BD	Find Free Enemy Slot
97DF	Run Object Behaviour
97FF	Chase Player
9837	Chase Player Briefly
984D	Accelerate Randomly
986A	Choose Acceleration
994B	Clear Object Speeds
995B	Run Type 19 Behaviour
9A66	Initialise Game
9A72	Fill Attributes White
9A7E	Clear Pixels
9A8A	Mask Map Table
9A9A	Play Music Until Key Pressed
9AA9	Play Music
9AB4	Play Note
9BC3	Read Keyboard Port
9BCF	Add A To HL
9BDA	Update Beams
9D0E	Check Beam Hit
9D25	Erase Beam
9D30	Draw Beam
9D53	Find Beam Extent
9DB1	Test Boxes Overlap
9DBB	Test Horizontal Overlap
9DD8	Test Vertical Overlap
9DEE	Find Slope Overlap
9E35	Test Slope Collision
9E7A	Find Mirrored Slope Overlap
9EE3	Read Pause Keys
9EF5	Fade Out And Clear Playfield
9EFE	Fade Out Playfield
9F2C	Clear Playfield
9F4E	Check Pause
9F54	Check Pause And Silence
9F71	Short Delay
A0B1	Print Character
A0DB	Print Wide Character
A115	Print Text
A149	Get Screen Address
A170	Find Attribute Address
A18D	Run Object Handler
A19F	Fetch Object Frame Table
A1AA	Get Table Entry
A1B3	Move Up A Row In DE
A1C3	Move Up A Row
A1D9	Clip Second Sprite
A1EA	Clip First Sprite
A1FB	Clip Sprite Vertically
A21C	Read Sprite Size
A223	Read Sprite Header
A234	Select Erase Sprite
A247	Select Draw Sprite
A266	Set Second Row Group
A27A	Set First Row Group
A28B	Find Object Screen Address
A2C0	Add Speeds To Position
A2D5	Subtract Speeds From Position
A2EA	Reset Sprites
A303	Draw Sprites
A57E	Find Buffer Address
A59F	Draw Sprites Directly
A629	Erase Aligned Row Directly
A669	Next Row Of Second Sprite
A66F	Draw Next Row
A678	Draw Aligned Row Directly
A6B2	Erase Aligned Row In Buffer
A6E1	Erase Shifted Row In Buffer
A733	Draw Aligned Row In Buffer
A75C	Draw Shifted Row In Buffer
A7A4	Erase Mirrored Row Directly
A7D6	Draw Mirrored Row Directly
A802	Delay
A8A5	Add To Stack
A8D9	Build Stack Graphic
A8F4	Check Map Object Collisions
AA01	Bounce Horizontally
AA15	Bounce Vertically
AA27	Reverse And Halve Speed
AA37	Build Carried Item Graphic
AA94	Attach Item To Ship
AAD7	Check Item Pickup
AB98	Test Box Against Ship
ABA8	Check Object Hit By Shot
ABF3	Mark Cell Destroyed
AC08	Find Cell Bit
AC29	Check Object Against Shots
AC34	Free Object Slot
AC60	Update Map Objects
ACDD	Trim Object Sprite
AD1B	Draw Object
AD27	Prepare Erase
AD48	Prepare Draw
ADBE	Fetch Frame Sprite
ADD8	Find Object Screen Position
AE98	Set Object Attributes
AF04	Set Pair Attributes
AFE9	Build Ship
B09C	Add Ship Part
B115	Read Controls
B16F	Read Input Device
B234	Update Ship Speeds
B2D5	Update Vertical Scroll Speed
B322	Limit Vertical Speed
B336	Draw Rows
B356	Erase Rows
B3EA	Add Shot Offset
B3F2	Choose Random Colour
B403	Choose Random Step
B414	Update Special Shot
B483	Update Shot
B5B5	Draw Shot
B628	Update Left Shot
B6EC	Test Shot Hits Ground
B706	Update Shots
B731	Fire Weapons
B752	Launch Shot
B833	Check Special Shot
B897	Make Shot Row
B8DB	Build Shot Pattern
B8FC	Clear Shot
B90A	Start Shot At Ship
B946	Find Tile Record
B97A	Compare Tile Position
B980	Find Horizontal Move
B9BB	Find Vertical Move
B9EC	Set Ship Speeds
BA0B	Zero Small Speed
BA21	Check Terrain Collision
BDF1	Take Three Eighths
BDFE	Double Number
BE03	Halve Number
BE08	Negate Number
BE10	Select Previous Zone
BE26	Select Next Column
BE43	Select Next Tile
BE8F	Start Terrain Check
BEE7	Find Tiles Overlapped
BF66	Move Object
BF85	Select Mirrored Erase
BFB8	Select Mirrored Draw
BFE3	Update Stars
C032	Update Star Layer
C10E	Check Star Position
C152	Scale Scroll Speed
C1AC	Create Ship Piece
C1CE	Check Item Delivery
C27F	Draw Piece
C331	Limit Height
C33C	Save Restart Position
C374	Run Frame
C4ED	Draw Ship Top
C5FF	Draw Side Flames
C6D2	Draw Main Flame
C7A3	Fetch Sprite Type
C7B1	Test Direction
C7FC	Update Horizontal Speed
C81F	Update Horizontal Scroll Speed
C868	Limit Horizontal Speed
C880	Limit Speed
C96F	Draw Bitmap
C991	Fill Attributes
C9B3	Copy Attributes
CA31	Print Ships Remaining
CA3F	Draw HUD
CAA7	Colour Fuel Gauge
CACB	Draw Frame
CBAE	Draw Fuel Gauge Frame
CBF1	Fetch Position
CC38	Draw Line Pair
CC4D	Use Fuel
CC63	Check Fuel Empty
CC77	Update Fuel Gauge
CCF5	Advance Screen Address
CD08	Set Up Segment
CD6B	Read Segment Shapes
CE5B	Count Vertical Contact
CE79	Record Floor Contact
CE97	Record Ceiling Contact
CEB5	Record Left Contact
CEC8	Record Right Contact
CEDB	Note Wall Contact
CF14	Test Attribute Address
CF36	Jump To Painter
CF38	Colour Segment
D04F	Paint One Column
D063	Paint Two Columns
D082	Paint Three Columns
D0BD	Draw Terrain
D292	Test Left Column
D2C0	Test Right Column
D2DA	Test Top Row
D2E1	Test Bottom Row
D303	Next Record
D319	Next Step
D3D2	Set Up Piece
D588	Set Up Flat Piece
D672	Locate Picture
D6DB	Adjust Piece
D700	Jump To Drawing Routine
D711	Finish Step
D729	End Segment
D7F8	Finish Segment
D80A	Next Segment
D86A	Draw Edge Pixels
D8DA	Fill Slope Edge
D937	Find Segment Address
D979	Note Segment Start
D990	Adjust Edge Address
D9A8	Draw Vertical Edge
DB26	Call Edge Painter
DB29	Move Up Edge Rows
DB41	Fill Two Edge Rows
DB49	Fill Four Edge Rows
DB5B	Fill Edge Row Pair
DB89	Draw Slope Rows
DBB7	Draw Slope Rows From Edge
DBFD	Draw Mirrored Rows From Edge
DC47	Draw Mirrored Slope Rows
DCA1	Begin Life
DD72	Scroll In World
DD79	Look For Ground
DDBF	Finish Scroll In
DDF8	Scroll World
DEE1	Set Row Attributes
DEF7	Choose Row Attribute
DF08	Make Tiles
E03D	Compare Slot With Site
E062	Free Distant Slots
E08F	Load Map Objects
E0EA	Clear Free Slot Flags
E114	Add Map Objects
E216	Find Map Address
E235	Get Tile
E244	Get Blank Tile
E249	Draw Flat Rows
E3D8	Set Slope Parameters
E41C	Fill Strip With Pattern
E48B	Draw One Byte Rows
E4A7	Draw Three Byte Rows
E4CF	Draw Two Byte Rows
E4F1	Draw Mirrored Three Byte Rows
E52B	Draw Mirrored Two Byte Rows
E55B	Draw Mirrored One Byte Rows
F1BD	Colour Ship
F23B	Get Random Numbers
F26C	Show Title Screen
F30B	Clear Bytes
F311	Reset Life
F39E	Reset Player State
F3BD	Start New Game
F419	Colour Playfield
F422	Run Game
F440	Prepare Life
F44C	Play Life
F46C	Run Life
F48B	Explode Ship
F4C6	Lose Life
F4EE	Print Player
F4FC	Game Over
F52A	Finish Planet
F54D	Update High Score
F591	Swap Players
F5C4	Swap Bytes
F7EB	Build Shape Tables
F856	Build Reverse Table
F86B	Build Tables
F895	Read Shape Header
F8AA	Merge Shifted Byte
F8B9	Merge Background Byte
F8C2	Fetch Shifted Byte
F8C9	Merge Next Shifted Byte
F8D0	Next Shift
F8E2	Build Shifted Shape A
F939	Build Shifted Shape B
FC00	Copy Game Down