Skip to navigation

Elite on the BBC Micro and NES

Map of the source code

[NES version]

This page contains a map of all the routines, variables and macros in the NES version of Elite. To make them easier to browse on the web, ROM banks with large source code files have been split into smaller parts, though each bank still produces exactly 16K when assembled. The source files are structured like this:

  • The common game code, which contains variable and macro definitions used throughout the code.
  • The iNES header, which tells emulators how to configure the ROM cartridge for emulation.
  • Bank 7 (part 1, 2, 3, 4), which is the only ROM bank that remains in memory at all times, swapping banks 0 to 6 in and out of memory as required.
  • The seven ROM banks that contain most of the game code, and which are swapped in and out of memory by bank 7: bank 0 (part 1, 2, 3, 4, 5), bank 1 (part 1, 2, 3), bank 2 (part 1, 2, 3, 4), bank 3 (part 1, 2), bank 4, bank 5 and bank 6 (part 1, 2, 3).

You can click on the links above to jump to the relevant part of the map.

Common
------

CategoryDetails

Workspaces

Workspace: ZP (Common)

Lots of important variables are stored in the zero page workspace as it is quicker and more space-efficient to access memory here

Workspaces

Workspace: XX3 (Common)

Temporary storage space for complex calculations

Workspaces

Workspace: Sprite buffer (Common)

Configuration data for sprites 0 to 63, which gets copied to the PPU to update the screen

Workspaces

Workspace: WP (Common)

Ship slots, variables

Workspaces

Workspace: K% (Common)

Ship data blocks

Workspaces

Workspace: Cartridge WRAM (Common)

The 8K of battery-backed RAM in the Elite cartridge, which is used for the graphics buffers and storing saved commanders

PPU

Macro: SETUP_PPU_FOR_ICON_BAR (Common)

If the PPU has started drawing the icon bar, configure the PPU to use nametable 0 and pattern table 0

Market

Macro: ITEM (Common)

Macro definition for the market prices table

Drawing ships

Macro: VERTEX (Common)

Macro definition for adding vertices to ship blueprints

Drawing ships

Macro: EDGE (Common)

Macro definition for adding edges to ship blueprints

Drawing ships

Macro: FACE (Common)

Macro definition for adding faces to ship blueprints

Text

Macro: EJMP (Common)

Macro definition for jump tokens in the extended token table

Text

Macro: ECHR (Common)

Macro definition for characters in the extended token table

Text

Macro: ETOK (Common)

Macro definition for recursive tokens in the extended token table

Text

Macro: ETWO (Common)

Macro definition for two-letter tokens in the extended token table

Text

Macro: ERND (Common)

Macro definition for random tokens in the extended token table

Text

Macro: TOKN (Common)

Macro definition for standard tokens in the extended token table

Text

Macro: CHAR (Common)

Macro definition for characters in the recursive token table

Text

Macro: TWOK (Common)

Macro definition for two-letter tokens in the token table

Text

Macro: CONT (Common)

Macro definition for control codes in the recursive token table

Text

Macro: RTOK (Common)

Macro definition for recursive tokens in the recursive token table

Drawing the screen

Macro: ADD_CYCLES_CLC (Common)

Add a specified number to the cycle count

Drawing the screen

Macro: ADD_CYCLES (Common)

Add a specified number to the cycle count

Drawing the screen

Macro: SUBTRACT_CYCLES (Common)

Subtract a specified number from the cycle count

Drawing the screen

Macro: FILL_MEMORY (Common)

Fill memory with the specified number of bytes

Drawing the screen

Macro: SEND_DATA_TO_PPU (Common)

Send a specified block of memory to the PPU

iNES header
-----------

CategoryDetails

Start and end

Variable: iNES header (iNES header)

The iNES header for running in an emulator

Bank 7 (Part 1 of 4)
--------------------

CategoryDetails

Start and end

Variable: ResetMMC1_b7 (Bank 7)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: BEGIN (Bank 7)

Run through the NES initialisation process, reset the variables and start the game

Start and end

Subroutine: ResetToStartScreen (Bank 7)

Reset the stack and the game's variables and show the Start screen

Start and end

Subroutine: ResetVariables (Bank 7)

Reset all the RAM (in both the NES and cartridge), initialise all the game's variables, and switch to ROM bank 0

Utility routines

Subroutine: SetBank0 (Bank 7)

Page ROM bank 0 into memory at $8000

Utility routines

Subroutine: SetNonZeroBank (Bank 7)

An unused routine that pages a specified ROM bank into memory at $8000, but only if it is non-zero

Utility routines

Subroutine: ResetBank (Bank 7)

Retrieve a ROM bank number from the stack and page that bank into memory at $8000

Utility routines

Subroutine: SetBank (Bank 7)

Page a specified ROM bank into memory at $8000

Start and end

Variable: xTitleScreen (Bank 7)

The text column for the title screen's title for each language

Flight

Variable: xSpaceView (Bank 7)

The text column for the space view name for each language

Maths (Arithmetic)

Variable: log (Bank 7)

Binary logarithm table (high byte)

Maths (Arithmetic)

Variable: logL (Bank 7)

Binary logarithm table (low byte)

Maths (Arithmetic)

Variable: antilog (Bank 7)

Binary antilogarithm table

Maths (Arithmetic)

Variable: antilogODD (Bank 7)

Binary antilogarithm table

Maths (Geometry)

Variable: SNE (Bank 7)

Sine/cosine table

Maths (Geometry)

Variable: ACT (Bank 7)

Arctan table

Drawing ships

Variable: XX21 (Bank 7)

Ship blueprints lookup table

PPU

Subroutine: SendBarNamesToPPU (Bank 7)

Send the nametable entries for the icon bar to the PPU

PPU

Subroutine: SendBarPatts2ToPPU (Bank 7)

Send pattern data for tiles 64-127 for the icon bar to the PPU, split across multiple calls to the NMI handler if required

PPU

Subroutine: SendBarPattsToPPU (Bank 7)

Send pattern data for tiles 0-127 for the icon bar to the PPU, split across multiple calls to the NMI handler if required

PPU

Subroutine: SendBarPattsToPPUS (Bank 7)

Send the pattern data for the icon bar to the PPU (this is a jump so we can call this routine using a branch instruction)

PPU

Subroutine: SendBarNamesToPPUS (Bank 7)

Send the nametable entries for the icon bar to the PPU (this is a jump so we can call this routine using a branch instruction)

PPU

Subroutine: ConsiderSendTiles (Bank 7)

If there are enough free cycles, move on to the next stage of sending patterns to the PPU

PPU

Subroutine: SendBuffersToPPU (Part 1 of 3) (Bank 7)

Send the icon bar nametable and palette data to the PPU, if it has changed, before moving on to tile data in part 2

PPU

Subroutine: SendBuffersToPPU (Part 2 of 3) (Bank 7)

If we are already sending tile data to the PPU, pick up where we left off, otherwise jump to part 3 to check for new data to send

PPU

Subroutine: SendBuffersToPPU (Part 3 of 3) (Bank 7)

If we need to send tile nametable and pattern data to the PPU for either bitplane, start doing just that

PPU

Subroutine: SendTilesToPPU (Bank 7)

Set up the variables needed to send the tile nametable and pattern data to the PPU, and then send them

PPU

Subroutine: SendPatternsToPPU (Part 1 of 6) (Bank 7)

Calculate how many patterns we need to send and jump to the most efficient routine for sending them

PPU

Subroutine: SendPatternsToPPU (Part 2 of 6) (Bank 7)

Configure variables for sending data to the PPU one pattern at a time with checks

PPU

Subroutine: SendPatternsToPPU (Part 3 of 6) (Bank 7)

Send pattern data to the PPU for one pattern at a time, checking after each one to see if is the last one

PPU

Subroutine: SendPatternsToPPU (Part 4 of 6) (Bank 7)

Configure variables for sending data to the PPU until we run out of cycles

PPU

Subroutine: SendPatternsToPPU (Part 5 of 6) (Bank 7)

Send pattern data to the PPU for two patterns at a time, until we run out of cycles (and without checking for the last pattern)

PPU

Subroutine: SendPatternsToPPU (Part 6 of 6) (Bank 7)

Save progress for use in the next VBlank and return from the subroutine

PPU

Subroutine: SendOtherBitplane (Bank 7)

Check whether we should send another bitplane to the PPU

PPU

Subroutine: SendNametableToPPU (Bank 7)

Send the tile nametable to the PPU if there are enough cycles left in the current VBlank

Drawing the screen

Subroutine: CopyNameBuffer0To1 (Bank 7)

Copy the contents of nametable buffer 0 to nametable buffer 1

Drawing the screen

Subroutine: DrawBoxTop (Bank 7)

Draw the top edge of the box along the top of the screen in nametable buffer 0

Drawing the screen

Subroutine: DrawBoxEdges (Bank 7)

Draw the left and right edges of the box along the sides of the screen, drawing into the nametable buffer for the drawing bitplane

Universe

Variable: UNIV (Bank 7)

Table of pointers to the local universe's ship data blocks

Universe

Subroutine: GINF (Bank 7)

Fetch the address of a ship's data block into INF

Drawing ships

Subroutine: HideExplosionBurst (Bank 7)

Hide the four sprites that make up the explosion burst that flashes up when a ship explodes

Dashboard

Subroutine: ClearScanner (Bank 7)

Remove all ships from the scanner and hide the scanner sprites

Drawing sprites

Subroutine: HideSprites (Bank 7)

Hide X sprites from sprite Y / 4 onwards

Drawing the screen

Variable: nameBufferHiAddr (Bank 7)

The high bytes of the addresses of the two nametable buffers

Drawing the screen

Variable: pattBufferHiAddr (Bank 7)

The high bytes of the addresses of the two pattern buffers

Utility routines

Subroutine: IRQ (Bank 7)

Handle IRQ interrupts by doing nothing

Utility routines

Subroutine: NMI (Bank 7)

The NMI interrupt handler that gets called every VBlank and which updates the screen, reads the controllers and plays music

Utility routines

Subroutine: UpdateNMITimer (Bank 7)

Update the NMI timer, which we can use to keep track of time for places like the combat demo

Drawing sprites

Subroutine: SendPaletteSprites (Bank 7)

Send the current palette and sprite data to the PPU

Drawing the screen

Subroutine: SetPaletteForView (Bank 7)

Send palette 0 for the current view to the PPU

PPU

Subroutine: SendPalettesToPPU (Bank 7)

Send the palette data from XX3 to the PPU

PPU

Subroutine: SendScreenToPPU (Bank 7)

Update the screen with the contents of the buffers

PPU

Subroutine: SetPPURegisters (Bank 7)

Set PPU_CTRL, PPU_ADDR and PPU_SCROLL for the current hidden bitplane

PPU

Subroutine: SetPPUTablesTo0 (Bank 7)

Set nametable 0 and pattern table 0 for drawing the icon bar

Drawing the screen

Subroutine: ClearBuffers (Bank 7)

If there are enough free cycles, clear down the nametable and pattern buffers for both bitplanes

Controllers

Subroutine: ReadControllers (Bank 7)

Read the buttons on the controllers and update the control variables

Controllers

Subroutine: ScanButtons (Bank 7)

Scan a specific controller and update the control variables

Utility routines

Subroutine: WaitForNextNMI (Bank 7)

An unused routine that waits until the NMI counter increments (i.e. the next VBlank)

Utility routines

Subroutine: WaitFor2NMIs (Bank 7)

Wait until two NMI interrupts have passed (i.e. the next two VBlanks)

Utility routines

Subroutine: WaitForNMI (Bank 7)

Wait until the next NMI interrupt has passed (i.e. the next VBlank)

PPU

Subroutine: WaitForIconBarPPU (Bank 7)

Wait until the PPU starts drawing the icon bar

Drawing the screen

Subroutine: ClearDrawingPlane (Part 1 of 3) (Bank 7)

Clear the nametable and pattern buffers for the newly flipped drawing plane

Drawing the screen

Subroutine: ClearDrawingPlane (Part 2 of 3) (Bank 7)

Clear the nametable buffers for the newly flipped drawing plane

Drawing the screen

Subroutine: ClearDrawingPlane (Part 3 of 3) (Bank 7)

Clear the pattern buffers for the newly flipped drawing plane

Drawing the screen

Variable: flagsForClearing (Bank 7)

A bitplane mask to control how bitplane buffer clearing works in the ClearPlaneBuffers routine

Drawing the screen

Subroutine: ClearPlaneBuffers (Part 1 of 2) (Bank 7)

Clear the nametable and pattern buffers of data that has already been sent to the PPU, starting with the nametable buffer

Drawing the screen

Subroutine: ClearPlaneBuffers (Part 2 of 2) (Bank 7)

Clear the pattern buffer of data that has already been sent to the PPU for the current bitplane

Utility routines

Subroutine: FillMemory (Bank 7)

Fill a block of memory with a specified value

Utility routines

Subroutine: FillMemory32Bytes (Bank 7)

Fill a 32-byte block of memory with a specified value

Bank 7 (Part 2 of 4)
--------------------

CategoryDetails

Utility routines

Subroutine: ClearMemory (Bank 7)

Clear a block of memory, split across multiple calls if required

PPU

Subroutine: WaitForPPUToFinish (Bank 7)

Wait until the NMI handler has finished updating both bitplanes, so the screen is no longer refreshing

Drawing the screen

Subroutine: FlipDrawingPlane (Bank 7)

Flip the drawing bitplane

Drawing the screen

Subroutine: SetDrawingBitplane (Bank 7)

Set the drawing bitplane to a specified value

Drawing the screen

Subroutine: SetPatternBuffer (Bank 7)

Set the high byte of the pattern buffer address variables

Utility routines

Subroutine: CopySmallBlock (Bank 7)

An unused routine that copies a small number of pages in memory

Utility routines

Subroutine: CopyLargeBlock (Bank 7)

An unused routine that copies a large number of pages in memory

Utility routines

Subroutine: WaitFor3xVBlank (Bank 7)

Wait for three VBlanks to pass

Utility routines

Subroutine: WaitForVBlank (Bank 7)

Wait for the next VBlank to pass

Sound

Subroutine: MakeSoundsAtVBlank (Bank 7)

Wait for the next VBlank and make the current sounds (music and sound effects)

Drawing the screen

Subroutine: DrawMessageInNMI (Bank 7)

Configure the NMI to send the portion of the screen that contains the in-flight message to the PPU (i.e. tile rows 22 to 24)

Drawing ships

Subroutine: DrawShipInBitplane (Bank 7)

Flip the drawing bitplane and draw the current ship in the newly flipped bitplane

Drawing the screen

Subroutine: DrawBitplaneInNMI (Bank 7)

Configure the NMI to send the drawing bitplane to the PPU after drawing the box edges and setting the next free tile number

Drawing the screen

Subroutine: SetDrawPlaneFlags (Bank 7)

Set the drawing bitplane flags to the specified value, draw the box edges and set the next free tile number

PPU

Subroutine: SendInventoryToPPU (Bank 7)

Send X batches of 16 bytes from SC(1 0) to the PPU, for sending the inventory icon bar image

Drawing pixels

Variable: TWOS (Bank 7)

Ready-made single-pixel character row bytes for the space view

Drawing pixels

Variable: TWOS2 (Bank 7)

Ready-made double-pixel character row bytes for the space view

Drawing lines

Variable: TWFL (Bank 7)

Ready-made character rows for the left end of a horizontal line in the space view

Drawing lines

Variable: TWFR (Bank 7)

Ready-made character rows for the right end of a horizontal line in the space view

Drawing pixels

Variable: yLookupLo (Bank 7)

Lookup table for converting pixel y-coordinate to tile number (low byte)

Drawing pixels

Variable: yLookupHi (Bank 7)

Lookup table for converting pixel y-coordinate to tile number (high byte)

Drawing the screen

Subroutine: GetRowNameAddress (Bank 7)

Get the addresses in the nametable buffers for the start of a given character row

Drawing lines

Subroutine: LOIN (Part 1 of 7) (Bank 7)

Draw a line: Calculate the line gradient in the form of deltas

Drawing lines

Subroutine: LOIN (Part 2 of 7) (Bank 7)

Draw a line: Line has a shallow gradient, step right along x-axis

Drawing lines

Subroutine: LOIN (Part 3 of 7) (Bank 7)

Draw a shallow line going right and up or left and down

Drawing lines

Subroutine: LOIN (Part 4 of 7) (Bank 7)

Draw a shallow line going right and down or left and up

Drawing lines

Subroutine: LOIN (Part 5 of 7) (Bank 7)

Draw a line: Line has a steep gradient, step up along y-axis

Drawing lines

Subroutine: LOIN (Part 6 of 7) (Bank 7)

Draw a steep line going up and left or down and right

Drawing lines

Subroutine: LOIN (Part 7 of 7) (Bank 7)

Draw a steep line going up and right or down and left

Drawing suns

Subroutine: DrawSunRowOfBlocks (Bank 7)

Draw a row of character blocks that contain sunlight, silhouetting any existing content against the sun

Drawing lines

Subroutine: HLOIN (Part 1 of 5) (Bank 7)

Draw a horizontal line from (X1, Y) to (X2, Y) using EOR logic

Drawing lines

Subroutine: HLOIN (Part 2 of 5) (Bank 7)

Draw the left end of the line

Drawing lines

Subroutine: HLOIN (Part 3 of 5) (Bank 7)

Draw the middle part of the line

Drawing lines

Subroutine: HLOIN (Part 4 of 5) (Bank 7)

Draw the right end of the line

Drawing lines

Subroutine: HLOIN (Part 5 of 5) (Bank 7)

Draw the line when it's all within one character block

Drawing lines

Subroutine: DrawVerticalLine (Part 1 of 3) (Bank 7)

Draw a vertical line from (X1, Y1) to (X1, Y2)

Drawing lines

Subroutine: DrawVerticalLine (Part 2 of 3) (Bank 7)

Draw the top end or bottom end of the line

Drawing lines

Subroutine: DrawVerticalLine (Part 3 of 3) (Bank 7)

Draw the middle portion of the line from full-height blocks

Drawing pixels

Subroutine: PIXEL (Bank 7)

Draw a 1-pixel dot

Drawing pixels

Subroutine: DrawDash (Bank 7)

Draw a 2-pixel dash

Dashboard

Subroutine: ECBLB2 (Bank 7)

Start up the E.C.M. (start the countdown and make the E.C.M. sound)

Dashboard

Subroutine: MSBAR (Bank 7)

Draw a specific indicator in the dashboard's missile bar

Dashboard

Variable: missileNames (Bank 7)

Tile numbers for the four missile indicators on the dashboard, as offsets from the start of tile row 22

Combat demo

Variable: autoPlayKeys1_EN (Bank 7)

Auto-play commands for the first part of the auto-play combat demo (combat practice) when English is the chosen language

Combat demo

Variable: autoPlayKeys1_DE (Bank 7)

Auto-play commands for the first part of the auto-play combat demo (combat practice) when German is the chosen language

Combat demo

Variable: autoPlayKeys1_FR (Bank 7)

Auto-play commands for the first part of the auto-play combat demo (combat practice) when French is the chosen language

Combat demo

Variable: autoPlayKeys2 (Bank 7)

Auto-play commands for the second part of the auto-play demo (demonstrating the game itself)

Combat demo

Subroutine: AutoPlayDemo (Bank 7)

Automatically play the demo using the auto-play commands from the autoplayKeys tables

Icon bar

Subroutine: HideIconBarPointer (Bank 7)

Clear the icon bar choice and hide the icon bar pointer

Icon bar

Subroutine: SetIconBarPointer (Bank 7)

Set the icon bar pointer to a specific position

Icon bar

Subroutine: MoveIconBarPointer (Bank 7)

Move the sprites that make up the icon bar pointer and record any choices

Controllers

Subroutine: SetControllerPast (Bank 7)

Set the controller history variables to the values from four VBlanks ago

Controllers

Subroutine: UpdateJoystick (Bank 7)

Update the values of JSTX and JSTY with the values from the controller

Controllers

Subroutine: IncreaseJoystick (Bank 7)

Increase a joystick value by a specific amount, jumping straight to the indicator centre if we increase from the left-hand side

Controllers

Subroutine: DecreaseJoystick (Bank 7)

Decrease a joystick value by a specific amount, jumping straight to the indicator centre if we decrease from the right-hand side

Icon bar

Variable: iconBarButtons (Bank 7)

A list of button numbers for each icon bar type

Stardust

Subroutine: HideStardust (Bank 7)

Hide the stardust sprites

Drawing sprites

Subroutine: HideMoreSprites (Bank 7)

Hide X + 1 sprites from sprite Y / 4 onwards

Drawing sprites

Subroutine: SetScreenForUpdate (Bank 7)

Get the screen ready for updating by hiding all sprites, after fading the screen to black if we are changing view

Drawing sprites

Subroutine: FadeAndHideSprites (Bank 7)

Fade the screen to black and hide all sprites

Drawing sprites

Subroutine: HideMostSprites (Bank 7)

Hide all sprites except for sprite 0 and the icon bar pointer

Utility routines

Subroutine: DELAY (Bank 7)

Wait until a specified number of NMI interrupts have passed (i.e. a specified number of VBlanks)

Sound

Subroutine: BEEP (Bank 7)

Make a short, high beep

Sound

Subroutine: EXNO3 (Bank 7)

Make an explosion sound

Sound

Subroutine: FlushSoundChannels (Bank 7)

Flush the SQ1, SQ2 and NOISE sound channels

Sound

Subroutine: FlushSQ2AndNOISE (Bank 7)

Flush the SQ2 and NOISE sound channels

Sound

Subroutine: FlushSpecificSound (Bank 7)

Flush the channels used by a specific sound

Sound

Subroutine: FlushSoundChannel (Bank 7)

Flush a specific sound channel

Sound

Subroutine: BOOP (Bank 7)

Make a long, low beep

Sound

Subroutine: MakeScoopSound (Bank 7)

Make the sound of the fuel scoops working

Sound

Subroutine: MakeHyperSound (Bank 7)

Make the hyperspace sound

Sound

Subroutine: NOISE (Bank 7)

Make the sound effect whose number is in Y

Sound

Subroutine: StartEffect_b7 (Bank 7)

Call the StartEffect routine

Sound

Variable: soundChannel (Bank 7)

The sound channels used by each sound effect

Sound

Variable: soundPriority (Bank 7)

The default priority for each sound effect

PPU

Subroutine: SetupPPUForIconBar (Bank 7)

If the PPU has started drawing the icon bar, configure the PPU to use nametable 0 and pattern table 0, while preserving A

Drawing ships

Subroutine: GetShipBlueprint (Bank 7)

Fetch a specified byte from the current ship blueprint

Utility routines

Subroutine: ResetBankA (Bank 7)

Page a specified bank into memory at $8000 while preserving the value of A

Drawing ships

Subroutine: GetDefaultNEWB (Bank 7)

Fetch the default NEWB flags for a specified ship type

Status

Subroutine: IncreaseTally (Bank 7)

Add the kill count to the fractional and low bytes of our combat rank tally following a kill

Utility routines

Subroutine: ResetBankP (Bank 7)

Page a specified bank into memory at $8000 while preserving the value of A and the processor flags

Icon bar

Subroutine: CheckPauseButton (Bank 7)

Check whether the pause button has been pressed or an icon bar button has been chosen, and process pause/unpause if required

Icon bar

Subroutine: CheckForPause_b0 (Bank 7)

Call the CheckForPause routine in ROM bank 0

Icon bar

Subroutine: DrawInventoryIcon (Bank 7)

Draw the inventory icon on top of the second button in the icon bar

Sound

Subroutine: MakeSounds_b6 (Bank 7)

Call the MakeSounds routine in ROM bank 6

Sound

Subroutine: ChooseMusic_b6 (Bank 7)

Call the ChooseMusic routine in ROM bank 6

Sound

Subroutine: StartEffect_b6 (Bank 7)

Call the StartEffect routine in ROM bank 6

Sound

Subroutine: ResetMusicAfterNMI (Bank 7)

Wait for the next NMI before resetting the current tune to 0 and stopping the music

Sound

Subroutine: ResetMusic (Bank 7)

Reset the current tune to the default and stop all sounds (music and sound effects)

Sound

Subroutine: StopSounds_b6 (Bank 7)

Call the StopSounds routine in ROM bank 6

Combat demo

Subroutine: SetDemoAutoPlay_b5 (Bank 7)

Call the SetDemoAutoPlay routine in ROM bank 5

Save and load

Subroutine: DrawSmallLogo_b4 (Bank 7)

Call the DrawSmallLogo routine in ROM bank 4

Start and end

Subroutine: DrawBigLogo_b4 (Bank 7)

Call the DrawBigLogo routine in ROM bank 4

Drawing the screen

Subroutine: FadeToBlack_b3 (Bank 7)

Call the FadeToBlack routine in ROM bank 3

Save and load

Subroutine: CheckSaveSlots_b6 (Bank 7)

Call the CheckSaveSlots routine in ROM bank 6

Drawing ships

Subroutine: LL9_b1 (Bank 7)

Call the LL9 routine in ROM bank 1

Flight

Subroutine: SIGHT_b3 (Bank 7)

Call the SIGHT routine in ROM bank 3

Maths (Geometry)

Subroutine: TIDY_b1 (Bank 7)

Call the TIDY routine in ROM bank 1

Start and end

Subroutine: ChooseLanguage_b6 (Bank 7)

Call the ChooseLanguage routine in ROM bank 6

Combat demo

Subroutine: PlayDemo_b0 (Bank 7)

Call the PlayDemo routine in ROM bank 0

Stardust

Subroutine: STARS_b1 (Bank 7)

Call the STARS routine in ROM bank 1

Drawing circles

Subroutine: CIRCLE2_b1 (Bank 7)

Call the CIRCLE2 routine in ROM bank 1

Drawing suns

Subroutine: SUN_b1 (Bank 7)

Call the SUN routine in ROM bank 1

Drawing the screen

Subroutine: DrawBackground_b3 (Bank 7)

Call the DrawBackground routine in ROM bank 3

Universe

Subroutine: DrawSystemImage_b3 (Bank 7)

Call the DrawSystemImage routine in ROM bank 3

Drawing the screen

Subroutine: DrawImageNames_b4 (Bank 7)

Call the DrawImageNames routine in ROM bank 4

Status

Subroutine: DrawCmdrImage_b6 (Bank 7)

Call the DrawCmdrImage routine in ROM bank 6

Drawing sprites

Subroutine: DrawSpriteImage_b6 (Bank 7)

Call the DrawSpriteImage routine in ROM bank 6

Status

Subroutine: GetHeadshotType_b4 (Bank 7)

Call the GetHeadshotType routine in ROM bank 4

Equipment

Subroutine: DrawEquipment_b6 (Bank 7)

Call the DrawEquipment routine in ROM bank 6

Start and end

Subroutine: DEATH2_b0 (Bank 7)

Switch to ROM bank 0 and call the DEATH2 routine

Start and end

Subroutine: StartGame_b0 (Bank 7)

Switch to ROM bank 0 and call the StartGame routine

Drawing the screen

Subroutine: SetViewAttrs_b3 (Bank 7)

Call the SetViewAttrs routine in ROM bank 3

Drawing the screen

Subroutine: FadeToColour_b3 (Bank 7)

Call the FadeToColour routine in ROM bank 3

Drawing the screen

Subroutine: DrawSmallBox_b3 (Bank 7)

Call the DrawSmallBox routine in ROM bank 3

Drawing the screen

Subroutine: DrawImageFrame_b3 (Bank 7)

Call the DrawImageFrame routine in ROM bank 3

Flight

Subroutine: DrawLaunchBox_b6 (Bank 7)

Call the DrawLaunchBox routine in ROM bank 6

Drawing the screen

Subroutine: SetLinePatterns_b3 (Bank 7)

Call the SetLinePatterns routine in ROM bank 3

Universe

Subroutine: TT24_b6 (Bank 7)

Call the TT24 routine in ROM bank 6

Drawing the screen

Subroutine: ClearDashEdge_b6 (Bank 7)

Call the ClearDashEdge routine in ROM bank 6

Text

Subroutine: LoadNormalFont_b3 (Bank 7)

Call the LoadNormalFont routine in ROM bank 3

Text

Subroutine: LoadHighFont_b3 (Bank 7)

Call the LoadHighFont routine in ROM bank 3

Missions

Subroutine: PAS1_b0 (Bank 7)

Call the PAS1 routine in ROM bank 0

Universe

Subroutine: GetSystemImage_b5 (Bank 7)

Call the GetSystemImage routine in ROM bank 5

Universe

Subroutine: GetSystemBack_b5 (Bank 7)

Call the GetSystemBack routine in ROM bank 5

Status

Subroutine: GetCmdrImage_b4 (Bank 7)

Call the GetCmdrImage routine in ROM bank 4

Status

Subroutine: GetHeadshot_b4 (Bank 7)

Call the GetHeadshot routine in ROM bank 4

Dashboard

Subroutine: DIALS_b6 (Bank 7)

Call the DIALS routine in ROM bank 6

Controllers

Subroutine: InputName_b6 (Bank 7)

Call the InputName routine in ROM bank 6

Drawing the screen

Subroutine: ChangeToView_b0 (Bank 7)

Call the ChangeToView routine in ROM bank 0

Flight

Subroutine: LL164_b6 (Bank 7)

Call the LL164 routine in ROM bank 6

Flight

Subroutine: DrawLightning_b6 (Bank 7)

Call the DrawLightning routine in ROM bank 6

Icon bar

Subroutine: PauseGame_b6 (Bank 7)

Call the PauseGame routine in ROM bank 6

Controllers

Subroutine: SetKeyLogger_b6 (Bank 7)

Call the SetKeyLogger routine in ROM bank 6

Save and load

Subroutine: ChangeCmdrName_b6 (Bank 7)

Call the ChangeCmdrName routine in ROM bank 6

Save and load

Subroutine: ResetCommander_b6 (Bank 7)

Call the ResetCommander routine in ROM bank 6

Save and load

Subroutine: JAMESON_b6 (Bank 7)

Call the JAMESON routine in ROM bank 6

Combat demo

Subroutine: ShowScrollText_b6 (Bank 7)

Call the ShowScrollText routine in ROM bank 6

Sound

Subroutine: BEEP_b7 (Bank 7)

Call the BEEP routine in ROM bank 7

Text

Subroutine: DETOK_b2 (Bank 7)

Call the DETOK routine in ROM bank 2

Text

Subroutine: DTS_b2 (Bank 7)

Call the DTS routine in ROM bank 2

Text

Subroutine: PDESC_b2 (Bank 7)

Call the PDESC routine in ROM bank 2

Icon bar

Subroutine: SetupIconBar_b3 (Bank 7)

Call the SetupIconBar routine in ROM bank 3

Icon bar

Subroutine: ShowIconBar_b3 (Bank 7)

Call the ShowIconBar routine in ROM bank 3

Dashboard

Subroutine: DrawDashNames_b3 (Bank 7)

Call the DrawDashNames routine in ROM bank 3

Dashboard

Subroutine: ResetScanner_b3 (Bank 7)

Call the ResetScanner routine in ROM bank 3

Start and end

Subroutine: ResetScreen_b3 (Bank 7)

Call the ResetScreen routine in ROM bank 3

PPU

Subroutine: UpdateScreen (Bank 7)

Update the screen by sending data to the PPU, either immediately or during VBlank, depending on whether the screen is visible

PPU

Subroutine: SendViewToPPU_b3 (Bank 7)

Call the SendViewToPPU routine in ROM bank 3

Bank 7 (Part 4 of 4)
--------------------

CategoryDetails

Drawing the screen

Subroutine: SetupFullViewInNMI (Bank 7)

Configure the PPU to send tiles for the full screen during VBlank

Drawing the screen

Subroutine: SetupViewInNMI_b3 (Bank 7)

Call the SetupViewInNMI routine in ROM bank 3

PPU

Subroutine: SendBitplaneToPPU_b3 (Bank 7)

Call the SendBitplaneToPPU routine in ROM bank 3

Icon bar

Subroutine: UpdateIconBar_b3 (Bank 7)

Call the UpdateIconBar routine in ROM bank 3

Drawing the screen

Subroutine: DrawScreenInNMI_b0 (Bank 7)

Call the DrawScreenInNMI routine in ROM bank 0

Save and load

Subroutine: SVE_b6 (Bank 7)

Call the SVE routine in ROM bank 6

Moving

Subroutine: MVS5_b0 (Bank 7)

Call the MVS5 routine in ROM bank 0

Ship hangar

Subroutine: HALL_b1 (Bank 7)

Call the HALL routine in ROM bank 1

Text

Subroutine: CHPR_b2 (Bank 7)

Call the CHPR routine in ROM bank 2

Text

Subroutine: DASC_b2 (Bank 7)

Call the DASC routine in ROM bank 2

Text

Subroutine: TT27_b2 (Bank 7)

Call the TT27 routine in ROM bank 2

Text

Subroutine: ex_b2 (Bank 7)

Call the ex routine in ROM bank 2

Text

Subroutine: PrintCtrlCode_b0 (Bank 7)

Call the PrintCtrlCode routine in ROM bank 0

Start and end

Subroutine: SetupAfterLoad_b0 (Bank 7)

Call the SetupAfterLoad routine in ROM bank 0

Dashboard

Subroutine: HideShip_b1 (Bank 7)

Update the current ship so it is no longer shown on the scanner

Dashboard

Subroutine: HideFromScanner_b1 (Bank 7)

Call the HideFromScanner routine in ROM bank 1

Drawing the screen

Subroutine: TT66_b0 (Bank 7)

Call the TT66 routine in ROM bank 0

Drawing lines

Subroutine: CLIP_b1 (Bank 7)

Call the CLIP routine in ROM bank 1, drawing the clipped line if it fits on-screen

Drawing the screen

Subroutine: ClearScreen_b3 (Bank 7)

Call the ClearScreen routine in ROM bank 3

Dashboard

Subroutine: SCAN_b1 (Bank 7)

Call the SCAN routine in ROM bank 1

Drawing the screen

Subroutine: UpdateViewWithFade (Bank 7)

Fade the screen to black, if required, hide all sprites and update the view

Drawing the screen

Subroutine: UpdateView_b0 (Bank 7)

Call the UpdateView routine in ROM bank 0

PPU

Subroutine: UpdateHangarView (Bank 7)

Update the hangar view on-screen by sending the data to the PPU, either immediately or during VBlank

Drawing the screen

Subroutine: CLYNS (Bank 7)

Clear the bottom two text rows of the visible screen

Status

Variable: alertColours (Bank 7)

Colours for the background of the commander image to show the status condition when we are not looking at the space view

Status

Subroutine: GetStatusCondition (Bank 7)

Calculate our ship's status condition

Combat demo

Subroutine: SetupDemoUniverse (Bank 7)

Initialise the local bubble of universe for the demo

Combat demo

Subroutine: FixRandomNumbers (Bank 7)

Fix the random number seeds to a known value so the random numbers generated are always the same when we run the demo

Start and end

Subroutine: ResetOptions (Bank 7)

Reset the game options to their default values

Start and end

Subroutine: DrawTitleScreen (Bank 7)

Draw a sequence of rotating ships on-screen while checking for button presses on the controllers

Start and end

Variable: titleShipType (Bank 7)

The types of ship to show rotating on the title screen

Start and end

Variable: titleShipDist (Bank 7)

The distances at which to show the rotating title screen ships

Universe

Subroutine: Ze (Bank 7)

Initialise the INWK workspace to a hostile ship

Save and load

Subroutine: UpdateSaveCount (Bank 7)

Update the save counter for the current commander

Drawing lines

Subroutine: NLIN3 (Bank 7)

Print a title and draw a screen-wide horizontal line on tile row 2 to box it in

Drawing lines

Subroutine: NLIN4 (Bank 7)

Draw a horizontal line on tile row 2 to box in a title

Drawing lines

Subroutine: NLIN2 (Bank 7)

Draw a horizontal line on tile row 2 to box in a title

Drawing the screen

Subroutine: SetDrawingPlaneTo0 (Bank 7)

Set the drawing bitplane to 0

Drawing the screen

Subroutine: ResetBuffers (Bank 7)

Reset the pattern and nametable buffers

Maths (Arithmetic)

Subroutine: DORND (Bank 7)

Generate random numbers

Maths (Geometry)

Subroutine: PROJ (Bank 7)

Project the current ship or planet onto the screen

Drawing planets

Subroutine: PLS6 (Bank 7)

Calculate (X K) = (A P) / (z_sign z_hi z_lo)

Utility routines

Subroutine: UnpackToRAM (Bank 7)

Unpack compressed image data to RAM

Utility routines

Subroutine: UnpackToPPU (Bank 7)

Unpack compressed image data and send it to the PPU

Maths (Geometry)

Subroutine: FAROF2 (Bank 7)

Compare x_hi, y_hi and z_hi with A

Maths (Arithmetic)

Subroutine: MU5 (Bank 7)

Set K(3 2 1 0) = (A A A A) and clear the C flag

Maths (Arithmetic)

Subroutine: MULT3 (Bank 7)

Calculate K(3 2 1 0) = (A P+1 P) * Q

Maths (Arithmetic)

Subroutine: MLS2 (Bank 7)

Calculate (S R) = XX(1 0) and (A P) = A * ALP1

Maths (Arithmetic)

Subroutine: MLS1 (Bank 7)

Calculate (A P) = ALP1 * A

Maths (Arithmetic)

Subroutine: MU6 (Bank 7)

Set P(1 0) = (A A)

Maths (Arithmetic)

Subroutine: SQUA (Bank 7)

Clear bit 7 of A and calculate (A P) = A * A

Maths (Arithmetic)

Subroutine: SQUA2 (Bank 7)

Calculate (A P) = A * A

Maths (Arithmetic)

Subroutine: MU1 (Bank 7)

Copy X into P and A, and clear the C flag

Maths (Arithmetic)

Subroutine: MLU1 (Bank 7)

Calculate Y1 = y_hi and (A P) = |y_hi| * Q for Y-th stardust

Maths (Arithmetic)

Subroutine: MLU2 (Bank 7)

Calculate (A P) = |A| * Q

Maths (Arithmetic)

Subroutine: MULTU (Bank 7)

Calculate (A P) = P * Q

Maths (Arithmetic)

Subroutine: MU11 (Bank 7)

Calculate (A P) = P * X

Maths (Arithmetic)

Subroutine: FMLTU2 (Bank 7)

Calculate A = K * sin(A)

Maths (Arithmetic)

Subroutine: FMLTU (Bank 7)

Calculate A = A * Q / 256

Maths (Arithmetic)

Subroutine: MLTU2 (Bank 7)

Calculate (A P+1 P) = (A ~P) * Q

Maths (Arithmetic)

Subroutine: MUT3 (Bank 7)

An unused routine that does the same as MUT2

Maths (Arithmetic)

Subroutine: MUT2 (Bank 7)

Calculate (S R) = XX(1 0) and (A P) = Q * A

Maths (Arithmetic)

Subroutine: MUT1 (Bank 7)

Calculate R = XX and (A P) = Q * A

Maths (Arithmetic)

Subroutine: MULT1 (Bank 7)

Calculate (A P) = Q * A

Maths (Arithmetic)

Subroutine: MULT12 (Bank 7)

Calculate (S R) = Q * A

Maths (Geometry)

Subroutine: TAS3 (Bank 7)

Calculate the dot product of XX15 and an orientation vector

Maths (Arithmetic)

Subroutine: MAD (Bank 7)

Calculate (A X) = Q * A + (S R)

Maths (Arithmetic)

Subroutine: ADD (Bank 7)

Calculate (A X) = (A P) + (S R)

Maths (Arithmetic)

Subroutine: TIS1 (Bank 7)

Calculate (A ?) = (-X * A + (S R)) / 96

Maths (Arithmetic)

Subroutine: DV42 (Bank 7)

Calculate (P R) = 256 * DELTA / z_hi

Maths (Arithmetic)

Subroutine: DV41 (Bank 7)

Calculate (P R) = 256 * DELTA / A

Maths (Arithmetic)

Subroutine: DVID4 (Bank 7)

Calculate (P R) = 256 * A / Q

Maths (Arithmetic)

Subroutine: DVID3B2 (Bank 7)

Calculate K(3 2 1 0) = (A P+1 P) / (z_sign z_hi z_lo)

Dashboard

Subroutine: cntr (Bank 7)

Apply damping to the pitch or roll dashboard indicator

Dashboard

Subroutine: BUMP2 (Bank 7)

Bump up the value of the pitch or roll dashboard indicator

Dashboard

Subroutine: REDU2 (Bank 7)

Reduce the value of the pitch or roll dashboard indicator

Maths (Arithmetic)

Subroutine: LL5 (Bank 7)

Calculate Q = SQRT(R Q)

Maths (Arithmetic)

Subroutine: LL28 (Bank 7)

Calculate R = 256 * A / Q

Maths (Arithmetic)

Subroutine: TIS2 (Bank 7)

Calculate A = A / Q

Maths (Geometry)

Subroutine: NORM (Bank 7)

Normalise the three-coordinate vector in XX15

Utility routines

Subroutine: SetupMMC1 (Bank 7)

Configure the MMC1 mapper and page ROM bank 0 into memory at $8000

Drawing lines

Variable: lineImage (Bank 7)

Image data for the horizontal line, vertical line and block images

Text

Variable: fontImage (Bank 7)

Image data for the text font

Utility routines

Variable: Vectors_b7 (Bank 7)

Vectors at the end of ROM bank 7

Bank 0 (Part 1 of 5)
--------------------

CategoryDetails

Start and end

Subroutine: ResetMMC1_b0 (Bank 0)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: Interrupts_b0 (Bank 0)

The IRQ and NMI handler while the MMC1 mapper reset routine is still running

Text

Variable: versionNumber_b0 (Bank 0)

The game's version number in bank 0

Flight

Subroutine: ResetShipStatus (Bank 0)

Reset the ship's speed, hyperspace counter, laser temperature, shields and energy banks

Flight

Subroutine: DOENTRY (Bank 0)

Dock at the space station, show the ship hangar and work out any mission progression

Main loop

Subroutine: Main flight loop (Part 4 of 16) (Bank 0)

For each nearby ship: Copy the ship's data block from K% to the zero-page workspace at INWK

Main loop

Subroutine: Main flight loop (Part 5 of 16) (Bank 0)

For each nearby ship: If an energy bomb has been set off, potentially kill this ship

Main loop

Subroutine: Main flight loop (Part 6 of 16) (Bank 0)

For each nearby ship: Move the ship in space and copy the updated INWK data block back to K%

Main loop

Subroutine: Main flight loop (Part 7 of 16) (Bank 0)

For each nearby ship: Check whether we are docking, scooping or colliding with it

Main loop

Subroutine: Main flight loop (Part 8 of 16) (Bank 0)

For each nearby ship: Process us potentially scooping this item

Main loop

Subroutine: Main flight loop (Part 9 of 16) (Bank 0)

For each nearby ship: If it is a space station, check whether we are successfully docking with it

Main loop

Subroutine: Main flight loop (Part 10 of 16) (Bank 0)

For each nearby ship: Remove if scooped, or process collisions

Main loop

Subroutine: Main flight loop (Part 11 of 16) (Bank 0)

For each nearby ship: Process missile lock and firing our laser

Main loop

Subroutine: Main flight loop (Part 12 of 16) (Bank 0)

For each nearby ship: Draw the ship, remove if killed, loop back

Main loop

Subroutine: FlightLoop4To16 (Bank 0)

Display in-flight messages, call parts 4 to 12 of the main flight loop for each slot, and fall through into parts 13 to 16

Main loop

Subroutine: Main flight loop (Part 13 of 16) (Bank 0)

Show energy bomb effect, charge shields and energy banks

Main loop

Subroutine: Main flight loop (Part 14 of 16) (Bank 0)

Spawn a space station if we are close enough to the planet

Main loop

Subroutine: Main flight loop (Part 15 of 16) (Bank 0)

Perform altitude checks with the planet and sun and process fuel scooping if appropriate

Main loop

Subroutine: Main flight loop (Part 16 of 16) (Bank 0)

Call stardust routine

Flight

Subroutine: ChargeShields (Bank 0)

Charge the shields and energy banks

Flight

Subroutine: CheckAltitude (Bank 0)

Perform an altitude check with the planet, ending the game if we hit the ground

Main loop

Subroutine: Main flight loop (Part 1 of 16) (Bank 0)

Seed the random number generator

Main loop

Subroutine: Main flight loop (Part 2 of 16) (Bank 0)

Calculate the alpha and beta angles from the current pitch and roll of our ship

Main loop

Subroutine: Main flight loop (Part 3 of 16) (Bank 0)

Scan for flight keys and process the results

Drawing the screen

Subroutine: DrawSpaceViewInNMI (Bank 0)

Configure the NMI handler to draw the space view

Universe

Subroutine: SPIN (Bank 0)

Randomly spawn cargo from a destroyed ship

Drawing the screen

Subroutine: HideHiddenColour (Bank 0)

Set the hidden colour to black, so that pixels in this colour in palette 0 are invisible

Drawing ships

Variable: scacol (Bank 0)

Ship colours on the scanner

Utility routines

Subroutine: SetAXTo15 (Bank 0)

An unused routine that sets A and X to 15

Status

Subroutine: PrintCombatRank (Bank 0)

Print the current combat rank

Status

Subroutine: PrintLegalStatus (Bank 0)

Print the current legal status (clean, offender or fugitive)

Status

Subroutine: STATUS (Bank 0)

Show the Status Mode screen

Drawing the screen

Subroutine: UpdateView (Bank 0)

Update the view

Status

Variable: yHeadshot (Bank 0)

The text row for the headshot on the Status Mode page

Drawing the screen

Subroutine: DrawScreenInNMI (Bank 0)

Configure the NMI handler to draw the screen

Text

Subroutine: PrintTokenCrTab (Bank 0)

Print a token, a newline and the correct indent for Status Mode entries in the chosen language

Text

Subroutine: PrintCrTab (Bank 0)

Print a newline and the correct indent for Status Mode entries in the chosen language

Status

Variable: xStatusMode (Bank 0)

The text column for the Status Mode entries for each language

Moving

Subroutine: MVT3 (Bank 0)

Calculate K(3 2 1) = (x_sign x_hi x_lo) + K(3 2 1)

Moving

Subroutine: MVS5 (Bank 0)

Apply a 3.6 degree pitch or roll to an orientation vector

Text

Variable: TENS (Bank 0)

A constant used when printing large numbers in BPRNT

Text

Subroutine: pr2 (Bank 0)

Print an 8-bit number, left-padded to 3 digits, and optional point

Text

Subroutine: TT11 (Bank 0)

Print a 16-bit number, left-padded to n digits, and optional point

Text

Subroutine: BPRNT (Bank 0)

Print a 32-bit number, left-padded to a specific number of digits, with an optional decimal point

Dashboard

Subroutine: DrawPitchRollBars (Bank 0)

Update the pitch and roll bars on the dashboard

Flight

Subroutine: ESCAPE (Bank 0)

Launch our escape pod

Charts

Subroutine: HME2 (Bank 0)

Search the galaxy for a system

Bank 0 (Part 2 of 5)
--------------------

CategoryDetails

Tactics

Subroutine: TACTICS (Part 1 of 7) (Bank 0)

Apply tactics: Process missiles, both enemy missiles and our own

Tactics

Subroutine: TACTICS (Part 2 of 7) (Bank 0)

Apply tactics: Escape pod, station, lone Thargon, safe-zone pirate

Tactics

Subroutine: TACTICS (Part 3 of 7) (Bank 0)

Apply tactics: Calculate dot product to determine ship's aim

Tactics

Subroutine: TACTICS (Part 4 of 7) (Bank 0)

Apply tactics: Check energy levels, maybe launch escape pod if low

Tactics

Subroutine: TACTICS (Part 5 of 7) (Bank 0)

Apply tactics: Consider whether to launch a missile at us

Tactics

Subroutine: TACTICS (Part 6 of 7) (Bank 0)

Apply tactics: Consider firing a laser at us, if aim is true

Tactics

Subroutine: TACTICS (Part 7 of 7) (Bank 0)

Apply tactics: Set pitch, roll, and acceleration

Flight

Subroutine: DOCKIT (Bank 0)

Apply docking manoeuvres to the ship in INWK

Maths (Arithmetic)

Subroutine: VCSU1 (Bank 0)

Calculate vector K3(8 0) = [x y z] - coordinates of the sun or space station

Maths (Arithmetic)

Subroutine: VCSUB (Bank 0)

Calculate vector K3(8 0) = [x y z] - coordinates in (A V)

Maths (Arithmetic)

Subroutine: TAS1 (Bank 0)

Calculate K3 = (x_sign x_hi x_lo) - V(1 0)

Maths (Geometry)

Subroutine: TAS4 (Bank 0)

Calculate the dot product of XX15 and one of the space station's orientation vectors

Maths (Geometry)

Subroutine: TAS6 (Bank 0)

Negate the vector in XX15 so it points in the opposite direction

Flight

Subroutine: DCS1 (Bank 0)

Calculate the vector from the ideal docking position to the ship

Tactics

Subroutine: HITCH (Bank 0)

Work out if the ship in INWK is in our crosshairs

Tactics

Subroutine: FRS1 (Bank 0)

Launch a ship straight ahead of us, below the laser sights

Tactics

Subroutine: FRMIS (Bank 0)

Fire a missile from our ship

Tactics

Subroutine: ANGRY (Bank 0)

Make a ship hostile

Tactics

Subroutine: FR1 (Bank 0)

Display the "missile jammed" message

Flight

Subroutine: SESCP (Bank 0)

Spawn an escape pod from the current (parent) ship

Universe

Subroutine: SFS1 (Bank 0)

Spawn a child ship from the current (parent) ship

Moving

Subroutine: SFS2 (Bank 0)

Move a ship in space along one of the coordinate axes

Flight

Subroutine: LAUN (Bank 0)

Make the launch sound and draw the launch tunnel

Drawing lines

Subroutine: LASLI (Bank 0)

Draw the laser lines for when we fire our lasers

Missions

Subroutine: BRIEF2 (Bank 0)

Start mission 2

Missions

Subroutine: BRP (Bank 0)

Print an extended token and show the Status Mode screen

Missions

Subroutine: BRIEF3 (Bank 0)

Receive the briefing and plans for mission 2

Missions

Subroutine: DEBRIEF2 (Bank 0)

Finish mission 2

Missions

Subroutine: DEBRIEF (Bank 0)

Finish mission 1

Missions

Subroutine: TBRIEF (Bank 0)

Start mission 3

Missions

Subroutine: BRIEF (Bank 0)

Start mission 1 and show the mission briefing

Missions

Subroutine: BRIS_b0 (Bank 0)

Clear the screen, display "INCOMING MESSAGE" and wait for 2 seconds

Universe

Subroutine: ping (Bank 0)

Set the selected system to the current system

Combat demo

Subroutine: PlayDemo (Bank 0)

Play the combat demo

Combat demo

Subroutine: RunDemoFlightLoop (Bank 0)

Run a fixed number of iterations of the main flight loop for the combat demo

Combat demo

Subroutine: SetupDemoShip (Bank 0)

Set up the ship workspace for a new ship in the combat demo

Market

Subroutine: tnpr1 (Bank 0)

Work out if we have space for one tonne of cargo

Market

Subroutine: tnpr (Bank 0)

Work out if we have space for a specific amount of cargo

Drawing the screen

Subroutine: SetNewViewType (Bank 0)

Clear the screen, set the current view type and move the cursor to row 0

Universe

Subroutine: TT20 (Bank 0)

Twist the selected system's seeds four times

Universe

Subroutine: TT54 (Bank 0)

Twist the selected system's seeds

Universe

Subroutine: TT146 (Bank 0)

Print the distance to the selected system in light years

Text

Subroutine: TT60 (Bank 0)

Print a text token and a paragraph break

Text

Subroutine: TTX69 (Bank 0)

Print a paragraph break

Text

Subroutine: TT69 (Bank 0)

Set Sentence Case and print a newline

Text

Subroutine: TT67 (Bank 0)

Print a newline

Universe

Subroutine: TT70 (Bank 0)

Display "MAINLY " and jump to TT72

Text

Subroutine: spc (Bank 0)

Print a text token followed by a space

Text

Subroutine: PrintSpaceAndToken (Bank 0)

Print a space followed by a text token

Universe

Variable: xDataOnSystem (Bank 0)

The text column for the Data on System title for each language

Text

Subroutine: PrintTokenAndColon (Bank 0)

Print a character followed by a colon, ensuring that the colon is always drawn in colour 3 on a black background

Universe

Variable: radiusText (Bank 0)

The text string "RADIUS" for use in the Data on System screen

Universe

Subroutine: TT25 (Bank 0)

Show the Data on System screen

Charts

Subroutine: TT22 (Bank 0)

Show the Long-range Chart

Drawing lines

Subroutine: TT15 (Bank 0)

Draw a set of crosshairs

Bank 0 (Part 3 of 5)
--------------------

CategoryDetails

Drawing circles

Subroutine: TT14 (Bank 0)

Draw a circle with crosshairs on a chart

Drawing circles

Subroutine: TT128 (Bank 0)

Draw a circle on a chart

Market

Subroutine: TT210 (Bank 0)

Show a list of current cargo in our hold, optionally to sell

Market

Subroutine: TT213 (Bank 0)

Show the Inventory screen

Text

Subroutine: PrintCharacter (Bank 0)

An unused routine that prints a character and sets the C flag

Charts

Subroutine: TT16 (Bank 0)

Move the crosshairs on a chart

Charts

Subroutine: TT103 (Bank 0)

Draw a small set of crosshairs on a chart

Charts

Subroutine: TT123 (Bank 0)

Move galactic coordinates by a signed delta

Charts

Subroutine: TT105 (Bank 0)

Draw crosshairs on the Short-range Chart, with clipping

Charts

Subroutine: DrawCrosshairs (Bank 0)

Draw a set of moveable crosshairs as a square reticle

Charts

Subroutine: HideCrosshairs (Bank 0)

Hide the moveable crosshairs (i.e. the square reticle)

Charts

Variable: xShortRange (Bank 0)

The text column for the Short-range Chart title for each language

Charts

Subroutine: TT23 (Bank 0)

Show the Short-range Chart

Charts

Subroutine: DrawChartSystem (Bank 0)

Draw system blobs on short-range chart

Universe

Subroutine: TT81 (Bank 0)

Set the selected system's seeds to those of system 0

Universe

Subroutine: SelectNearbySystem (Bank 0)

Set the current system to the nearest system and update the selected system flags accordingly

Universe

Subroutine: SetSelectedSystem (Bank 0)

Set the selected system to the nearest system, if we don't already have a selected system

Universe

Subroutine: SetSelectionFlags (Bank 0)

Set the selected system flags for the currently selected system and update the icon bar if required

Universe

Subroutine: SetCurrentSystem (Bank 0)

Set the seeds for the selected system to the system that we last snapped the crosshairs to

Universe

Subroutine: TT111 (Bank 0)

Set the current system to the nearest system to a point

Flight

Subroutine: dockEd (Bank 0)

Print a message to say there is no hyperspacing allowed inside the station

Flight

Subroutine: GalacticHyperdrive (Bank 0)

If we are in space and the countdown has ended, activate the galactic hyperdrive

Flight

Subroutine: hyp (Bank 0)

Start the hyperspace process

Flight

Subroutine: wW (Bank 0)

Start a hyperspace countdown

Flight

Subroutine: Ghy (Bank 0)

Perform a galactic hyperspace jump

Universe

Subroutine: jmp (Bank 0)

Set the current system to the selected system

Text

Subroutine: pr6 (Bank 0)

Print 16-bit number, left-padded to 5 digits, no point

Text

Subroutine: pr5 (Bank 0)

Print a 16-bit number, left-padded to 5 digits, and optional point

Flight

Subroutine: TT147 (Bank 0)

Print an error when a system is out of hyperspace range

Text

Subroutine: prq (Bank 0)

Print a text token followed by a question mark

Market

Subroutine: TT151 (Bank 0)

Print the name, price and availability of a market item

Text

Subroutine: PrintSpacedHyphen (Bank 0)

Print two spaces, then a "-", and then another two spaces

Market

Subroutine: TT152 (Bank 0)

Print the unit ("t", "kg" or "g") for a market item

Text

Subroutine: TT162 (Bank 0)

Print a space

Market

Subroutine: TT160 (Bank 0)

Print "t" (for tonne) and a space

Market

Subroutine: TT161 (Bank 0)

Print "kg" (for kilograms)

Market

Subroutine: TT16a (Bank 0)

Print "g" (for grams)

Market

Subroutine: TT163 (Bank 0)

Print the headers for the table of market prices

Market

Subroutine: PrintNumberInHold (Bank 0)

Print the number of units of a specified item that we have in the hold

Market

Variable: yMarketPrice (Bank 0)

The text row for the Market Price title for each language

Market

Subroutine: TT167 (Bank 0)

Show the Market Price screen

Market

Subroutine: BuyAndSellCargo (Bank 0)

Process the buying and selling of cargo on the Market Price screen

Market

Subroutine: HighlightSaleItem (Bank 0)

Highlight the name, price and availability of a market item on the correct row for the chosen language

Market

Subroutine: PrintMarketItem (Bank 0)

Print the name, price and availability of a market item on the correct row for the chosen language

Market

Subroutine: PrintCash (Bank 0)

Print our cash levels in the correct place for the chosen language

Market

Variable: xCash (Bank 0)

The text column for our cash levels on the Market Price page

Market

Variable: yCash (Bank 0)

The text row for the cash levels on the Market Price page

Market

Subroutine: var (Bank 0)

Calculate QQ19+3 = economy * |economic_factor|

Universe

Subroutine: hyp1 (Bank 0)

Process a jump to the system closest to (QQ9, QQ10)

Universe

Subroutine: GVL (Bank 0)

Calculate the availability of market items

Universe

Subroutine: GTHG (Bank 0)

Spawn a Thargoid ship and a Thargon companion

Flight

Subroutine: MJP (Bank 0)

Process a mis-jump into witchspace

Flight

Subroutine: TT18 (Bank 0)

Try to initiate a jump into hyperspace

Drawing the screen

Subroutine: RedrawCurrentView (Bank 0)

Update the current view when we arrive in a new system

Flight

Subroutine: TT110 (Bank 0)

Launch from a station or show the front space view

Charts

Subroutine: TT114 (Bank 0)

Display either the Long-range or Short-range Chart

Maths (Arithmetic)

Subroutine: LCASH (Bank 0)

Subtract an amount of cash from the cash pot

Maths (Arithmetic)

Subroutine: MCASH (Bank 0)

Add an amount of cash to the cash pot

Maths (Arithmetic)

Subroutine: GC2 (Bank 0)

Calculate (Y X) = (A P) * 4

Start and end

Subroutine: SetupAfterLoad (Bank 0)

Configure the game following a commander file load

Equipment

Subroutine: DrawCobraMkIII (Bank 0)

Draw the Cobra Mk III on the Equip Ship screen

Equipment

Subroutine: HighlightEquipment (Bank 0)

Highlight an item of equipment on the Equip Ship screen

Equipment

Subroutine: PrintEquipment (Bank 0)

Print the name and price for a specified item of equipment

Equipment

Subroutine: MoveEquipmentUp (Bank 0)

Move the currently selected item up the list of equipment

Equipment

Subroutine: UpdateEquipment (Bank 0)

Highlight the newly chosen item of equipment, update the Cobra Mk III, redraw the screen and rejoin the main EQSHP routine

Equipment

Subroutine: MoveEquipmentDown (Bank 0)

Move the currently selected item down the list of equipment

Equipment

Variable: xEquipShip (Bank 0)

The text column for the Equip Ship title for each language

Equipment

Subroutine: EQSHP (Bank 0)

Show the Equip Ship screen

Market

Subroutine: dn (Bank 0)

Print the amount of money we have left in the cash pot

Equipment

Subroutine: eq (Bank 0)

Subtract the price of equipment from the cash pot

Equipment

Subroutine: prx (Bank 0)

Return the price of a piece of equipment

Bank 0 (Part 4 of 5)
--------------------

CategoryDetails

Equipment

Subroutine: PrintLaserView (Bank 0)

Print the name of a laser view in the laser-buying popup, filled to the right by the correct number of spaces to fill the popup

Equipment

Variable: xLaserView (Bank 0)

The text column of the right edge of the laser-buying popup, so the popup gets filled with spaces and covers what's underneath it

Equipment

Subroutine: HighlightLaserView (Bank 0)

Highlight the laser view name in the popup menu

Equipment

Variable: popupWidth (Bank 0)

The width of the popup that shows the views available for installing lasers in the Equipment screen

Equipment

Subroutine: qv (Bank 0)

Print a popup menu of the four space views, for buying lasers

Equipment

Subroutine: refund (Bank 0)

Install a new laser, processing a refund if applicable

Equipment

Variable: PRXS (Bank 0)

Equipment prices

Universe

Subroutine: SetSelectedSeeds (Bank 0)

Set the seeds for the selected system in QQ15 to the seeds in the safehouse

Universe

Subroutine: cpl (Bank 0)

Print the selected system name

Status

Subroutine: cmn (Bank 0)

Print the commander's name

Universe

Subroutine: ypl (Bank 0)

Print the current system name

Universe

Subroutine: tal (Bank 0)

Print the current galaxy number

Status

Subroutine: fwl (Bank 0)

Print fuel and cash levels

Text

Subroutine: Print4Spaces (Bank 0)

An unused routine that prints four spaces

Text

Subroutine: Print2Spaces (Bank 0)

Print two spaces

Text

Subroutine: ypls (Bank 0)

Print the current system name

Status

Subroutine: csh (Bank 0)

Print the current amount of cash

Text

Subroutine: plf (Bank 0)

Print a text token followed by a newline

Text

Subroutine: TT68 (Bank 0)

Print a text token followed by a colon

Text

Subroutine: TT73 (Bank 0)

Print a colon

Text

Subroutine: tals (Bank 0)

Print the current galaxy number

Text

Subroutine: PrintCtrlCode (Bank 0)

Print a control code (in the range 0 to 9)

Text

Subroutine: fwls (Bank 0)

Print fuel and cash levels

Universe

Subroutine: SOS1 (Bank 0)

Update the missile indicators, set up the planet data block

Universe

Subroutine: SOLAR (Bank 0)

Set up various aspects of arriving in a new system

Stardust

Subroutine: NWSTARS (Bank 0)

Initialise the stardust field

Stardust

Subroutine: nWq (Bank 0)

Create a random cloud of stardust

Dashboard

Subroutine: WPSHPS (Bank 0)

Set all ships to be hidden from the screen

Flight

Subroutine: SHD (Bank 0)

Charge a shield and drain some energy from the energy banks

Flight

Subroutine: DENGY (Bank 0)

Drain some energy from the energy banks

Dashboard

Subroutine: COMPAS (Bank 0)

Update the compass

Dashboard

Subroutine: SP1 (Bank 0)

Draw the space station on the compass

Dashboard

Subroutine: SP2 (Bank 0)

Draw a dot on the compass, given the planet/station vector

Maths (Geometry)

Subroutine: SPS4 (Bank 0)

Calculate the vector to the space station

Flight

Subroutine: OOPS (Bank 0)

Take some damage

Universe

Subroutine: NWSPS (Bank 0)

Add a new space station to our local bubble of universe

Universe

Subroutine: NWSHP (Bank 0)

Add a new ship to our local bubble of universe

Universe

Subroutine: NwS1 (Bank 0)

Flip the sign and double an INWK byte

Universe

Subroutine: KS1 (Bank 0)

Remove the current ship from our local bubble of universe

Universe

Subroutine: KS4 (Bank 0)

Remove the space station and replace it with the sun

Universe

Subroutine: KS2 (Bank 0)

Check the local bubble for missiles with target lock

Universe

Subroutine: RemoveShip (Bank 0)

Fetch a ship data block and remove that ship from our local bubble of universe

Universe

Subroutine: KILLSHP (Bank 0)

Remove a ship from our local bubble of universe

Dashboard

Subroutine: ABORT (Bank 0)

Disarm missiles and update the dashboard indicators

Dashboard

Subroutine: ABORT2 (Bank 0)

Set/unset the lock target for a missile and update the dashboard

Controllers

Subroutine: YESNO (Bank 0)

Display "YES" or "NO" and wait until one is chosen

Controllers

Subroutine: TT17 (Bank 0)

Scan the key logger for the directional pad buttons

Missions

Subroutine: THERE (Bank 0)

Check whether we are in the Constrictor's system in mission 1

Start and end

Subroutine: RESET (Bank 0)

Reset most variables

Start and end

Subroutine: RES2 (Bank 0)

Reset a number of flight variables and workspaces

Universe

Subroutine: ZINF (Bank 0)

Reset the INWK workspace and orientation vectors

Drawing the screen

Subroutine: SetScreenHeight (Bank 0)

Set the screen height variables to the specified height

Dashboard

Subroutine: msblob (Bank 0)

Display the dashboard's missile indicators in black or grey

Main loop

Subroutine: Main game loop (Part 1 of 6) (Bank 0)

Spawn a trader (a Cobra Mk III, Python, Boa or Anaconda)

Main loop

Subroutine: Main game loop (Part 2 of 6) (Bank 0)

Call the main flight loop, and potentially spawn a trader, an asteroid, or a cargo canister

Main loop

Subroutine: Main game loop (Part 3 of 6) (Bank 0)

Potentially spawn a cop, particularly if we've been bad

Main loop

Subroutine: Main game loop (Part 4 of 6) (Bank 0)

Potentially spawn a lone bounty hunter, a Thargoid, or up to four pirates

Main loop

Subroutine: Main game loop (Part 5 of 6) (Bank 0)

Cool down lasers, make calls to update the dashboard

Main loop

Subroutine: Main game loop (Part 6 of 6) (Bank 0)

Process non-flight key presses (icon bar selections)

Sound

Variable: trumbleSounds (Bank 0)

The range of sounds that the Trumbles make in the hold

Icon bar

Subroutine: TT102 (Bank 0)

Process icon bar controller choices

Status

Subroutine: BAD (Bank 0)

Calculate how bad we have been

Maths (Geometry)

Subroutine: FAROF (Bank 0)

Compare x_hi, y_hi and z_hi with 224

Maths (Geometry)

Subroutine: MAS4 (Bank 0)

Calculate a cap on the maximum distance to a ship

Icon bar

Subroutine: CheckForPause (Bank 0)

Pause the game if the pause button (Start) is pressed

Start and end

Subroutine: DEATH (Bank 0)

Display the death screen

Bank 0 (Part 5 of 5)
--------------------

CategoryDetails

Start and end

Subroutine: ShowStartScreen (Bank 0)

Show the start screen and start the game

Start and end

Subroutine: DEATH2 (Bank 0)

Reset most of the game and restart from the title screen

Start and end

Subroutine: StartGame (Bank 0)

Reset the stack and game variables, and start the game by going to the docking bay

Status

Subroutine: BAY (Bank 0)

Go to the docking bay (i.e. show the Status Mode screen)

Start and end

Subroutine: BR1 (Bank 0)

Reset a number of variables, ready to start a new game

Drawing the screen

Subroutine: ChangeToView (Bank 0)

Clear the screen and set a new view type

Start and end

Subroutine: TITLE (Bank 0)

Display a title screen with a rotating ship and prompt

Utility routines

Subroutine: ZERO (Bank 0)

Reset the local bubble of universe and ship status

Controllers

Subroutine: U% (Bank 0)

Clear the key logger

Maths (Geometry)

Subroutine: MAS1 (Bank 0)

Add an orientation vector coordinate to an INWK coordinate

Maths (Geometry)

Subroutine: MAS2 (Bank 0)

Calculate a cap on the maximum distance to the planet or sun

Maths (Arithmetic)

Subroutine: MAS3 (Bank 0)

Calculate A = x_hi^2 + y_hi^2 + z_hi^2 in the K% block

Universe

Subroutine: SpawnSpaceStation (Bank 0)

Add a space station to the local bubble of universe if we are close enough to the station's orbit

Maths (Arithmetic)

Subroutine: SPS2 (Bank 0)

Calculate X = A / 16

Maths (Geometry)

Subroutine: SPS3 (Bank 0)

Copy a space coordinate from the K% block into K3

Maths (Geometry)

Subroutine: SPS1 (Bank 0)

Calculate the vector to the planet and store it in XX15

Maths (Geometry)

Subroutine: TAS2 (Bank 0)

Normalise the three-coordinate vector in K3

Flight

Subroutine: WARP (Bank 0)

Process the fast-forward button to end the demo, dock instantly or perform an in-system jump

Flight

Subroutine: FastForwardJump (Bank 0)

Perform an in-system jump

Flight

Subroutine: CheckJumpSafety (Bank 0)

Check whether we are far enough away from the planet and sun to be able to do an in-system (fast-forward) jump

Flight

Subroutine: InSystemJump (Bank 0)

Perform an in-system (fast-forward) jump

Controllers

Subroutine: DOKEY (Bank 0)

Scan for the seven primary flight controls and apply the docking computer manoeuvring code

Text

Subroutine: PrintMessage (Bank 0)

Print a message in the middle of the screen (used for "GAME OVER" and demo missile messages only)

Flight

Subroutine: MESS (Bank 0)

Display an in-flight message

Flight

Subroutine: mes9 (Bank 0)

Print a text token, possibly followed by " DESTROYED"

Text

Subroutine: StoreMessage (Bank 0)

Copy a message from the justified text buffer at BUF into the message buffer

Text

Subroutine: DisableJustifyText (Bank 0)

Turn off justified text and reset the justified text buffer

Text

Subroutine: PrintFlightMessage (Bank 0)

Print an in-flight message

Flight

Subroutine: OUCH (Bank 0)

Potentially lose cargo or equipment following damage

Flight

Subroutine: ou2 (Bank 0)

Display "E.C.M.SYSTEM DESTROYED" as an in-flight message

Flight

Subroutine: ou3 (Bank 0)

Display "FUEL SCOOPS DESTROYED" as an in-flight message

Market

Variable: QQ23 (Bank 0)

Market prices table

Missions

Subroutine: PAS1 (Bank 0)

Display a rotating ship at space coordinates (0, 100, 256) and scan the controllers

Moving

Subroutine: MVEIT (Part 1 of 9) (Bank 0)

Move current ship: Tidy the orientation vectors

Moving

Subroutine: MVEIT (Part 2 of 9) (Bank 0)

Move current ship: Call tactics routine, remove ship from scanner

Moving

Subroutine: MVEIT (Part 3 of 9) (Bank 0)

Move current ship: Move ship forward according to its speed

Moving

Subroutine: MVEIT (Part 4 of 9) (Bank 0)

Move current ship: Apply acceleration to ship's speed as a one-off

Moving

Subroutine: MVEIT (Part 5 of 9) (Bank 0)

Move current ship: Rotate ship's location by our pitch and roll

Moving

Subroutine: MVEIT (Part 6 of 9) (Bank 0)

Move current ship: Move the ship in space according to our speed

Moving

Subroutine: MVEIT (Part 7 of 9) (Bank 0)

Move current ship: Rotate ship's orientation vectors by pitch/roll

Moving

Subroutine: MVEIT (Part 8 of 9) (Bank 0)

Move current ship: Rotate ship about itself by its own pitch/roll

Moving

Subroutine: MVEIT (Part 9 of 9) (Bank 0)

Move current ship: Redraw on scanner, if it hasn't been destroyed

Moving

Subroutine: MVT1 (Bank 0)

Calculate (x_sign x_hi x_lo) = (x_sign x_hi x_lo) + (A R)

Moving

Subroutine: MVS4 (Bank 0)

Apply pitch and roll to an orientation vector

Moving

Subroutine: MVT6 (Bank 0)

Calculate (A P+2 P+1) = (x_sign x_hi x_lo) + (A P+2 P+1)

Moving

Subroutine: MV40 (Bank 0)

Rotate the planet or sun's location in space by the amount of pitch and roll of our ship

Flight

Subroutine: PLUT (Bank 0)

Flip the coordinate axes for the four different views

Flight

Subroutine: LOOK1 (Bank 0)

Initialise the space view

Stardust

Subroutine: FLIP (Bank 0)

Reflect the stardust particles in the screen diagonal

PPU

Subroutine: SendSpaceViewToPPU (Bank 0)

Set a new space view, clear the screen, copy the nametable buffers and configure the PPU for the new view

Drawing the screen

Subroutine: SetSpaceViewInNMI (Bank 0)

Change the current space view and configure the NMI to send both bitplanes to the PPU during VBlank

Stardust

Subroutine: ResetStardust (Bank 0)

Hide the sprites for the stardust

Drawing the screen

Subroutine: SetupSpaceView (Bank 0)

Set up the NMI variables for the space view

Sound

Subroutine: ECMOF (Bank 0)

Switch off the E.C.M.

Tactics

Subroutine: SFRMIS (Bank 0)

Add an enemy missile to our local bubble of universe

Status

Subroutine: EXNO2 (Bank 0)

Process us making a kill

Sound

Variable: explosionSounds (Bank 0)

Sound numbers for explosions at different distances from our ship

Sound

Subroutine: EXNO (Bank 0)

Make the sound of a laser strike or ship explosion

Drawing the screen

Subroutine: TT66 (Bank 0)

Clear the screen and set the new view type

Text

Subroutine: PrintSpaceViewName (Bank 0)

Print the name of the current space view

Utility routines

Variable: Vectors_b0 (Bank 0)

Vectors and padding at the end of ROM bank 0

Bank 1 (Part 1 of 3)
--------------------

CategoryDetails

Start and end

Subroutine: ResetMMC1_b1 (Bank 1)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: Interrupts_b1 (Bank 1)

The IRQ and NMI handler while the MMC1 mapper reset routine is still running

Text

Variable: versionNumber_b1 (Bank 1)

The game's version number in bank 1

Drawing ships

Variable: Unused copy of XX21 (Bank 1)

Remnants of an unused copy of the XX21 ship blueprints lookup table

Drawing ships

Variable: E% (Bank 1)

Ship blueprints default NEWB flags

Status

Variable: KWL% (Bank 1)

Fractional number of kills awarded for destroying each type of ship

Status

Variable: KWH% (Bank 1)

Integer number of kills awarded for destroying each type of ship

Drawing ships

Variable: SHIP_MISSILE (Bank 1)

Ship blueprint for a missile

Drawing ships

Variable: SHIP_CORIOLIS (Bank 1)

Ship blueprint for a Coriolis space station

Drawing ships

Variable: SHIP_ESCAPE_POD (Bank 1)

Ship blueprint for an escape pod

Drawing ships

Variable: SHIP_PLATE (Bank 1)

Ship blueprint for an alloy plate

Drawing ships

Variable: SHIP_CANISTER (Bank 1)

Ship blueprint for a cargo canister

Drawing ships

Variable: SHIP_BOULDER (Bank 1)

Ship blueprint for a boulder

Drawing ships

Variable: SHIP_ASTEROID (Bank 1)

Ship blueprint for an asteroid

Drawing ships

Variable: SHIP_SPLINTER (Bank 1)

Ship blueprint for a splinter

Drawing ships

Variable: SHIP_SHUTTLE (Bank 1)

Ship blueprint for a Shuttle

Drawing ships

Variable: SHIP_TRANSPORTER (Bank 1)

Ship blueprint for a Transporter

Drawing ships

Variable: SHIP_COBRA_MK_3 (Bank 1)

Ship blueprint for a Cobra Mk III

Drawing ships

Variable: SHIP_PYTHON (Bank 1)

Ship blueprint for a Python

Drawing ships

Variable: SHIP_BOA (Bank 1)

Ship blueprint for a Boa

Drawing ships

Variable: SHIP_ANACONDA (Bank 1)

Ship blueprint for an Anaconda

Drawing ships

Variable: SHIP_ROCK_HERMIT (Bank 1)

Ship blueprint for a rock hermit (asteroid)

Drawing ships

Variable: SHIP_VIPER (Bank 1)

Ship blueprint for a Viper

Drawing ships

Variable: SHIP_SIDEWINDER (Bank 1)

Ship blueprint for a Sidewinder

Drawing ships

Variable: SHIP_MAMBA (Bank 1)

Ship blueprint for a Mamba

Drawing ships

Variable: SHIP_KRAIT (Bank 1)

Ship blueprint for a Krait

Drawing ships

Variable: SHIP_ADDER (Bank 1)

Ship blueprint for an Adder

Drawing ships

Variable: SHIP_GECKO (Bank 1)

Ship blueprint for a Gecko

Drawing ships

Variable: SHIP_COBRA_MK_1 (Bank 1)

Ship blueprint for a Cobra Mk I

Drawing ships

Variable: SHIP_WORM (Bank 1)

Ship blueprint for a Worm

Drawing ships

Variable: SHIP_COBRA_MK_3_P (Bank 1)

Ship blueprint for a Cobra Mk III (pirate)

Drawing ships

Variable: SHIP_ASP_MK_2 (Bank 1)

Ship blueprint for an Asp Mk II

Drawing ships

Variable: SHIP_PYTHON_P (Bank 1)

Ship blueprint for a Python (pirate)

Drawing ships

Variable: SHIP_FER_DE_LANCE (Bank 1)

Ship blueprint for a Fer-de-Lance

Drawing ships

Variable: SHIP_MORAY (Bank 1)

Ship blueprint for a Moray

Drawing ships

Variable: SHIP_THARGOID (Bank 1)

Ship blueprint for a Thargoid mothership

Drawing ships

Variable: SHIP_THARGON (Bank 1)

Ship blueprint for a Thargon

Drawing ships

Variable: SHIP_CONSTRICTOR (Bank 1)

Ship blueprint for a Constrictor

Drawing ships

Variable: SHIP_COUGAR (Bank 1)

Ship blueprint for a Cougar

Drawing ships

Variable: SHIP_DODO (Bank 1)

Ship blueprint for a Dodecahedron ("Dodo") space station

Drawing ships

Subroutine: SHPPT (Bank 1)

Draw a distant ship as a point rather than a full wireframe

Maths (Arithmetic)

Subroutine: LL38 (Bank 1)

Calculate (S A) = (S R) + (A Q)

Maths (Geometry)

Subroutine: LL51 (Bank 1)

Calculate the dot product of XX15 and XX16

Drawing ships

Subroutine: LL9 (Part 1 of 12) (Bank 1)

Draw ship: Check if ship is exploding, check if ship is in front

Drawing ships

Subroutine: LL9 (Part 2 of 12) (Bank 1)

Draw ship: Check if ship is in field of view, close enough to draw

Drawing ships

Subroutine: LL9 (Part 3 of 12) (Bank 1)

Draw ship: Set up orientation vector, ship coordinate variables

Drawing ships

Subroutine: LL9 (Part 4 of 12) (Bank 1)

Draw ship: Set visibility for exploding ship (all faces visible)

Drawing ships

Subroutine: LL9 (Part 5 of 12) (Bank 1)

Draw ship: Calculate the visibility of each of the ship's faces

Drawing ships

Subroutine: LL9 (Part 6 of 12) (Bank 1)

Draw ship: Calculate the visibility of each of the ship's vertices

Bank 1 (Part 2 of 3)
--------------------

CategoryDetails

Maths (Arithmetic)

Subroutine: LL61 (Bank 1)

Calculate (U R) = 256 * A / Q

Maths (Arithmetic)

Subroutine: LL62 (Bank 1)

Calculate 128 - (U R)

Drawing ships

Subroutine: LL9 (Part 7 of 12) (Bank 1)

Draw ship: Calculate the visibility of each of the ship's vertices

Drawing ships

Subroutine: LL9 (Part 8 of 12) (Bank 1)

Draw ship: Calculate the screen coordinates of visible vertices

Drawing ships

Subroutine: LL9 (Part 9 of 12) (Bank 1)

Draw ship: Draw laser beams if the ship is firing its laser at us

Drawing ships

Subroutine: LL9 (Part 10 of 12) (Bank 1)

Draw ship: Calculate the visibility of each of the ship's edges

Drawing lines

Subroutine: LL145 (Part 1 of 4) (Bank 1)

Clip line: Work out which end-points are on-screen, if any

Drawing lines

Subroutine: LL145 (Part 2 of 4) (Bank 1)

Clip line: Work out if any part of the line is on-screen

Drawing lines

Subroutine: LL145 (Part 3 of 4) (Bank 1)

Clip line: Calculate the line's gradient

Drawing lines

Subroutine: LL145 (Part 4 of 4) (Bank 1)

Clip line: Call the routine in LL188 to do the actual clipping

Drawing ships

Subroutine: LL9 (Part 11 of 12) (Bank 1)

Draw ship: Loop back for the next edge

Drawing ships

Subroutine: LL9 (Part 12 of 12) (Bank 1)

Does nothing in the NES version

Drawing lines

Subroutine: LL118 (Bank 1)

Move a point along a line until it is on-screen

Maths (Arithmetic)

Subroutine: LL120 (Bank 1)

Calculate (Y X) = (S x1_lo) * XX12+2 or (S x1_lo) / XX12+2

Maths (Arithmetic)

Subroutine: LL123 (Bank 1)

Calculate (Y X) = (S R) / XX12+2 or (S R) * XX12+2

Maths (Arithmetic)

Subroutine: LL129 (Bank 1)

Calculate Q = XX12+2, A = S EOR XX12+3 and (S R) = |S R|

Drawing ships

Subroutine: DOEXP (Bank 1)

Draw an exploding ship

Drawing planets

Subroutine: PLANET (Bank 1)

Draw the planet or sun

Drawing planets

Subroutine: PL9 (Part 1 of 3) (Bank 1)

Draw the planet, with either an equator and meridian, or a crater

Drawing planets

Subroutine: PL9 (Part 2 of 3) (Bank 1)

Draw the planet's equator and meridian

Drawing planets

Subroutine: PL9 (Part 3 of 3) (Bank 1)

Draw the planet's crater

Drawing planets

Subroutine: PLS1 (Bank 1)

Calculate (Y A) = nosev_x / z

Drawing planets

Subroutine: PLS2 (Bank 1)

Draw a half-ellipse

Drawing planets

Subroutine: PLS22 (Bank 1)

Draw an ellipse or half-ellipse

Drawing suns

Subroutine: SUN (Part 1 of 2) (Bank 1)

Draw the sun: Set up all the variables needed to draw the sun

Drawing suns

Subroutine: SUN (Part 2 of 2) (Bank 1)

Draw the sun: Starting from the bottom of the sun, draw the new sun line by line

Drawing suns

Subroutine: PLFL (Bank 1)

Calculate the sun's width on a given pixel row

Drawing circles

Subroutine: CIRCLE (Bank 1)

Draw a circle for the planet

Drawing circles

Subroutine: CIRCLE2 (Bank 1)

Draw a circle (for the planet or chart)

Bank 1 (Part 3 of 3)
--------------------

CategoryDetails

Drawing lines

Subroutine: EDGES (Bank 1)

Draw a horizontal line given a centre and a half-width

Drawing suns

Subroutine: DrawSunEdgeLeft (Bank 1)

Draw a sun line in the tile on the left end of a sun row

Drawing suns

Subroutine: DrawSunEdgeRight (Bank 1)

Draw a sun line in the tile on the right end of a sun row

Drawing circles

Subroutine: CHKON (Bank 1)

Check whether any part of a circle appears on the extended screen

Drawing planets

Subroutine: PL21 (Bank 1)

Return from a planet/sun-drawing routine with a failure flag

Drawing planets

Subroutine: PL44 (Bank 1)

Return from a planet/sun-drawing routine with a success flag

Drawing planets

Subroutine: PLS3 (Bank 1)

Calculate (Y A P) = 222 * roofv_x / z

Drawing planets

Subroutine: PLS4 (Bank 1)

Calculate CNT2 = arctan(P / A) / 4

Drawing planets

Subroutine: PLS5 (Bank 1)

Calculate roofv_x / z and roofv_y / z

Maths (Geometry)

Subroutine: ARCTAN (Bank 1)

Calculate A = arctan(P / Q)

Drawing circles

Subroutine: BLINE (Bank 1)

Draw a circle segment and add it to the ball line heap

Stardust

Subroutine: STARS (Bank 1)

The main routine for processing the stardust

Stardust

Subroutine: STARS1 (Bank 1)

Process the stardust for the front view

Stardust

Subroutine: STARS6 (Bank 1)

Process the stardust for the rear view

Stardust

Subroutine: STARS2 (Bank 1)

Process the stardust for the left or right view

Ship hangar

Variable: yHangarFloor (Bank 1)

Pixel y-coordinates for the four horizontal lines that make up the floor of the ship hangar

Ship hangar

Subroutine: HANGER (Bank 1)

Display the ship hangar

Ship hangar

Subroutine: DrawHangarWallLine (Bank 1)

Draw a vertical hangar wall line from top to bottom, stopping when it bumps into existing on-screen content

Ship hangar

Subroutine: HAL3 (Bank 1)

Draw a hangar background line from left to right, stopping when it bumps into existing on-screen content

Ship hangar

Subroutine: HAS3 (Bank 1)

Draw a hangar background line from right to left

Ship hangar

Variable: HATB (Bank 1)

Ship hangar group table

Ship hangar

Subroutine: HALL (Bank 1)

Draw the ships in the ship hangar, then draw the hangar

Universe

Subroutine: ZINF_b1 (Bank 1)

Reset the INWK workspace and orientation vectors

Ship hangar

Subroutine: HAS1 (Bank 1)

Draw a ship in the ship hangar

Maths (Geometry)

Subroutine: TIDY (Bank 1)

Orthonormalise the orientation vectors for a ship

Maths (Arithmetic)

Subroutine: TIS3 (Bank 1)

Calculate -(nosev_1 * roofv_1 + nosev_2 * roofv_2) / nosev_3

Maths (Arithmetic)

Subroutine: DVIDT (Bank 1)

Calculate (P+1 A) = (A P) / Q

Dashboard

Subroutine: SCAN (Bank 1)

Display the current ship on the scanner

Dashboard

Subroutine: HideShip (Bank 1)

Update the current ship so it is no longer shown on the scanner

Dashboard

Subroutine: HideFromScanner (Bank 1)

Hide the current ship from the scanner

Drawing ships

Subroutine: DrawExplosionBurst (Bank 1)

Draw an exploding ship along with an explosion burst made up of colourful sprites

Drawing pixels

Subroutine: PIXEL2 (Bank 1)

Draw a stardust particle relative to the screen centre

Utility routines

Variable: Vectors_b1 (Bank 1)

Vectors and padding at the end of ROM bank 1

Bank 2 (Part 1 of 4)
--------------------

CategoryDetails

Start and end

Subroutine: ResetMMC1_b2 (Bank 2)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: Interrupts_b2 (Bank 2)

The IRQ and NMI handler while the MMC1 mapper reset routine is still running

Text

Variable: versionNumber_b2 (Bank 2)

The game's version number in bank 2

Text

Variable: TKN1 (Bank 2)

The first extended token table for recursive tokens 0-255 (DETOK)

Text

Variable: RUPLA (Bank 2)

System numbers that have extended description overrides

Text

Variable: RUGAL (Bank 2)

The criteria for systems with extended description overrides

Text

Variable: RUTOK (Bank 2)

The second extended token table for recursive tokens 0-26 (DETOK3)

Bank 2 (Part 2 of 4)
--------------------

CategoryDetails

Text

Variable: TKN1_DE (Bank 2)

The first extended token table for recursive tokens 0-255 (DETOK) (German)

Text

Variable: RUPLA_DE (Bank 2)

System numbers that have extended description overrides (German)

Text

Variable: RUGAL_DE (Bank 2)

The criteria for systems with extended description overrides (German)

Text

Variable: RUTOK_DE (Bank 2)

The second extended token table for recursive tokens 0-26 (DETOK3) (German)

Bank 2 (Part 3 of 4)
--------------------

CategoryDetails

Text

Variable: TKN1_FR (Bank 2)

The first extended token table for recursive tokens 0-255 (DETOK) (French)

Text

Variable: RUPLA_FR (Bank 2)

System numbers that have extended description overrides (French)

Text

Variable: RUGAL_FR (Bank 2)

The criteria for systems with extended description overrides (French)

Text

Variable: RUTOK_FR (Bank 2)

The second extended token table for recursive tokens 0-26 (DETOK3) (French)

Text

Variable: QQ18 (Bank 2)

The recursive token table for tokens 0-148

Text

Variable: QQ18_DE (Bank 2)

The recursive token table for tokens 0-148 (German)

Bank 2 (Part 4 of 4)
--------------------

CategoryDetails

Text

Variable: QQ18_FR (Bank 2)

The recursive token table for tokens 0-148 (French)

Text

Variable: rutokLo (Bank 2)

Address lookup table for the RUTOK text token table in three different languages (low byte)

Text

Variable: rutokHi (Bank 2)

Address lookup table for the RUTOK text token table in three different languages (high byte)

Text

Subroutine: DETOK3 (Bank 2)

Print an extended recursive token from the RUTOK token table

Text

Subroutine: DETOK (Bank 2)

Print an extended recursive token from the TKN1 token table

Text

Subroutine: DETOK2 (Bank 2)

Print an extended text token (1-255)

Text

Variable: JMTB (Bank 2)

The extended token table for jump tokens 1-32 (DETOK)

Text

Variable: MTIN (Bank 2)

Lookup table for random tokens in the extended token table (0-37)

Text

Subroutine: MT27 (Bank 2)

Print the captain's name during mission briefings

Text

Subroutine: MT28 (Bank 2)

Print the location hint during the mission 1 briefing

Text

Subroutine: MT1 (Bank 2)

Switch to ALL CAPS when printing extended tokens

Text

Subroutine: MT2 (Bank 2)

Switch to Sentence Case when printing extended tokens

Text

Subroutine: MT8 (Bank 2)

Tab to column 6 and start a new word when printing extended tokens

Text

Subroutine: MT16 (Bank 2)

Print the character in variable DTW7

Save and load

Subroutine: FILEPR (Bank 2)

Display the currently selected media (disc or tape)

Save and load

Subroutine: OTHERFILEPR (Bank 2)

Display the non-selected media (disc or tape)

Text

Subroutine: MT9 (Bank 2)

Clear the screen and set the view type for a text-based mission

Text

Subroutine: MT6 (Bank 2)

Switch to standard tokens in Sentence Case

Text

Subroutine: MT5 (Bank 2)

Switch to extended tokens

Text

Subroutine: MT14 (Bank 2)

Switch to justified text when printing extended tokens

Text

Subroutine: MT15 (Bank 2)

Switch to left-aligned text when printing extended tokens

Text

Subroutine: MT17 (Bank 2)

Print the selected system's adjective, e.g. Lavian for Lave

Text

Subroutine: MT18 (Bank 2)

Print a random 1-8 letter word in Sentence Case

Text

Subroutine: MT26 (Bank 2)

Print a space and capitalise the next letter

Text

Subroutine: MT19 (Bank 2)

Capitalise the next letter

Text

Subroutine: VOWEL (Bank 2)

Test whether a character is a vowel

Text

Variable: TKN2 (Bank 2)

The extended two-letter token lookup table

Text

Variable: QQ16 (Bank 2)

The two-letter token lookup table

Missions

Subroutine: BRIS (Bank 2)

Clear the screen, display "INCOMING MESSAGE" and wait for 2 seconds

Missions

Subroutine: PAUSE (Bank 2)

Display a rotating ship, waiting until a key is pressed, then remove the ship from the screen

Text

Subroutine: MT23 (Bank 2)

Move to row 9 and switch to lower case when printing extended tokens

Text

Subroutine: MT29 (Bank 2)

Move to row 7 and switch to lower case when printing extended tokens

Text

Subroutine: MT13 (Bank 2)

Switch to lower case when printing extended tokens

Controllers

Subroutine: PAUSE2 (Bank 2)

Wait until a key is pressed, ignoring any existing key press

Text

Variable: ruplaLo (Bank 2)

Address lookup table for the RUPLA text token table in three different languages (low byte)

Text

Variable: ruplaHi (Bank 2)

Address lookup table for the RUPLA text token table in three different languages (high byte)

Text

Variable: rugalLo (Bank 2)

Address lookup table for the RUGAL text token table in three different languages (low byte)

Text

Variable: rugalHi (Bank 2)

Address lookup table for the RUGAL text token table in three different languages (high byte)

Text

Variable: NRU (Bank 2)

The number of planetary systems with extended system description overrides in the RUTOK table (NRU%) in three different languages

Universe

Subroutine: PDESC (Bank 2)

Print the system's extended description or a mission 1 directive

Text

Subroutine: TT27 (Bank 2)

Print a text token

Text

Subroutine: TT42 (Bank 2)

Print a letter in lower case

Text

Subroutine: TT41 (Bank 2)

Print a letter according to Sentence Case

Text

Subroutine: qw (Bank 2)

Print a recursive token in the range 128-145

Text

Subroutine: TT45 (Bank 2)

Print a letter in lower case

Text

Subroutine: TT43 (Bank 2)

Print a two-letter token or recursive token 0-95

Text

Subroutine: ex (Bank 2)

Print a recursive token

Text

Subroutine: TT26 (Bank 2)

Print a character at the text cursor, with support for verified text in extended tokens

Sound

Subroutine: BELL (Bank 2)

Make a standard system beep

Text

Subroutine: CHPR (Part 1 of 6) (Bank 2)

Print a character at the text cursor by poking into screen memory

Text

Subroutine: CHPR (Part 2 of 6) (Bank 2)

Jump to the right part of the routine depending on whether the font pattern we need is already loaded

Text

Subroutine: CHPR (Part 3 of 6) (Bank 2)

Draw a character into the pattern buffers to show the character on-screen

Text

Subroutine: CHPR (Part 4 of 6) (Bank 2)

Process the delete character

Text

Subroutine: CHPR (Part 5 of 6) (Bank 2)

Print the character using a font that has already been loaded

Text

Subroutine: CHPR (Part 6 of 6) (Bank 2)

Print a character in the space view when the relevant font is not loaded, merging the text with whatever is already on-screen

Text

Variable: lowerCase (Bank 2)

Lookup table for converting ASCII characters to lower case characters in the game's text font

Utility routines

Variable: Vectors_b2 (Bank 2)

Vectors and padding at the end of ROM bank 2

Bank 3 (Part 1 of 2)
--------------------

CategoryDetails

Start and end

Subroutine: ResetMMC1_b3 (Bank 3)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: Interrupts_b3 (Bank 3)

The IRQ and NMI handler while the MMC1 mapper reset routine is still running

Text

Variable: versionNumber_b3 (Bank 3)

The game's version number in bank 3

Text

Variable: Copyright and version message (Bank 3)

A copyright and version message buried in the code

Icon bar

Variable: iconBarImage0 (Bank 3)

Image data for icon bar 0 (Docked)

Icon bar

Variable: iconBarImage1 (Bank 3)

Image data for icon bar 1 (Flight)

Icon bar

Variable: iconBarImage2 (Bank 3)

Image data for icon bar 2 (Charts)

Icon bar

Variable: iconBarImage3 (Bank 3)

Image data for icon bar 3 (Pause)

Icon bar

Variable: iconBarImage4 (Bank 3)

Image data for icon bar 4 (Title screen copyright message)

Icon bar

Variable: barNames0 (Bank 3)

Nametable entries for icon bar 0 (Docked)

Icon bar

Variable: barNames1 (Bank 3)

Nametable entries for icon bar 1 (Flight)

Icon bar

Variable: barNames2 (Bank 3)

Nametable entries for icon bar 2 (Charts)

Icon bar

Variable: barNames3 (Bank 3)

Nametable entries for icon bar 3 (Pause)

Icon bar

Variable: barNames4 (Bank 3)

Nametable entries for icon bar 4 (Title screen copyright message)

Dashboard

Variable: dashNames (Bank 3)

Nametable entries for the dashboard

Dashboard

Variable: dashImage (Bank 3)

Packed image data for the dashboard

Equipment

Variable: cobraImage (Bank 3)

Packed image data for the Cobra Mk III shown on the Equip Ship screen

Equipment

Variable: inventoryIcon (Bank 3)

Image data for the inventory icon shown on the icon bar in the Market Price screen

Save and load

Variable: smallLogoImage (Bank 3)

Packed image data for the small Elite logo shown on the Save and Load screen

Start and end

Variable: logoBallImage (Bank 3)

Packed image data for the ball at the bottom of the big Elite logo shown on the Start screen

Dashboard

Subroutine: DrawDashNames (Bank 3)

Draw the dashboard into both the nametable buffers

Dashboard

Subroutine: ResetScanner (Bank 3)

Reset the sprites used for drawing ships on the scanner

PPU

Subroutine: SendViewToPPU (Bank 3)

Configure the PPU for the view type in QQ11

PPU

Subroutine: SendFontImageToPPU (Bank 3)

Send a font to the PPU as a colour 1 font on a colour 0 background (i.e. colour 1 on black)

PPU

Subroutine: SendDashImageToPPU (Bank 3)

Unpack the dashboard image and send it to patterns 69 to 255 in pattern table 0 in the PPU

PPU

Subroutine: SendBitplaneToPPU (Bank 3)

Send a bitplane to the PPU immediately

PPU

Subroutine: SendDataNowToPPU (Bank 3)

Send the specified bitplane buffers to the PPU immediately, without trying to squeeze it into VBlanks

Drawing the screen

Subroutine: SetupViewInNMI (Bank 3)

Setup the view and configure the NMI to send both bitplanes to the PPU during VBlank

Drawing the screen

Variable: paletteForView (Bank 3)

Palette numbers for each view

Drawing the screen

Variable: boxEdgeImages (Bank 3)

Image data for patterns 0 to 4

Start and end

Subroutine: ResetScreen (Bank 3)

Reset the screen by clearing down the PPU, setting all colours to black, and resetting the screen-related variables

Icon bar

Subroutine: SetIconBarRow (Bank 3)

Set the row on which the icon bar appears, which depends on the view type

Icon bar

Subroutine: ShowIconBar (Bank 3)

Show a specified icon bar on-screen

Icon bar

Subroutine: UpdateIconBar (Bank 3)

Update the icon bar

PPU

Subroutine: SetupSprite0 (Bank 3)

Set the coordinates of sprite 0 so we can detect when the PPU starts to draw the icon bar

Icon bar

Subroutine: BlankAllButtons (Bank 3)

Blank all the buttons on the icon bar

Icon bar

Subroutine: BlankButtons6To11 (Bank 3)

Blank from the sixth to the eleventh button on the icon bar

Icon bar

Subroutine: BlankButtons8To11 (Bank 3)

Blank from the eighth to the eleventh button on the icon bar

Icon bar

Subroutine: DrawIconBar (Bank 3)

Draw the icon bar into the nametable buffers for both bitplanes

Bank 3 (Part 2 of 2)
--------------------

CategoryDetails

Icon bar

Subroutine: HideIconBar (Bank 3)

Remove the icon bar from the screen by replacing it with background tiles

Icon bar

Subroutine: SetupIconBarPause (Bank 3)

Set up the game options shown on the icon bar when the game is paused

Icon bar

Subroutine: SetIconBarButtonsS (Bank 3)

Set the correct list of button numbers for the icon bar (this is a jump so we can call this routine using a branch instruction)

Icon bar

Subroutine: SetupIconBar (Bank 3)

Set up the icons on the icon bar to show all available options

Icon bar

Subroutine: SetupIconBarFlight (Bank 3)

Set up the Flight icon bar

Icon bar

Subroutine: SetupIconBarDocked (Bank 3)

Set up the Docked icon bar

Icon bar

Subroutine: SetIconBarButtons (Bank 3)

Set the correct list of button numbers for the icon bar

Icon bar

Subroutine: SetupIconBarCharts (Bank 3)

Set up the Charts icon bar

Icon bar

Subroutine: DrawBlankButton2x2 (Bank 3)

Draw a blank icon bar button as a 2x2 tile block

Icon bar

Subroutine: DrawBlankButton3x2 (Bank 3)

Draw a blank icon bar button as a 3x2 tile block

Icon bar

Subroutine: Draw6OptionTiles (Bank 3)

Draw six tiles over the top of an icon bar button in the Pause icon bar to change an option icon to a non-default state

Icon bar

Subroutine: Draw4OptionTiles (Bank 3)

Draw four tiles over the top of an icon bar button in the Pause icon bar to change an option icon to a non-default state

Icon bar

Subroutine: Draw2OptionTiles (Bank 3)

Draw a top and bottom tile over the top of an icon bar button in the Pause icon bar to change an option icon to a non-default state

Drawing the screen

Subroutine: SetLinePatterns (Bank 3)

Copy the patterns for horizontal line, vertical line and block images into the pattern buffers, depending on the view

Text

Subroutine: LoadNormalFont (Bank 3)

Load the normal font into the pattern buffer from pattern 66 to 160

Text

Subroutine: LoadHighFont (Bank 3)

Load the highlight font into the pattern buffer from pattern 161 to 255

Universe

Subroutine: DrawSystemImage (Bank 3)

Draw the system image as a coloured foreground in front of a greyscale background

Drawing the screen

Subroutine: DrawImageFrame (Bank 3)

Draw a frame around the system image or commander headshot

Drawing the screen

Subroutine: DrawRowOfTiles (Bank 3)

Draw a row of tiles into the nametable buffer

Drawing the screen

Subroutine: GetNameAddress (Bank 3)

Get the addresses in the nametable buffers for a given tile

Drawing the screen

Subroutine: DrawSmallBox (Bank 3)

Draw a small box, typically used for popups or outlines

Drawing the screen

Subroutine: DrawBackground (Bank 3)

Draw the background of a system or commander image into the nametable buffer

Drawing the screen

Subroutine: ClearScreen (Bank 3)

Clear the screen by clearing patterns 66 to 255 in both pattern buffers, and clearing both nametable buffers to the background

Drawing the screen

Variable: viewPalettes (Bank 3)

The palettes to use for the different views

Drawing the screen

Variable: fadeColours (Bank 3)

Lookup table that converts a NES colour to the same colour but with a smaller brightness value

Drawing the screen

Subroutine: GetViewPalettes (Bank 3)

Get the palette for the view type in QQ11a and store it in a table at XX3

Drawing the screen

Subroutine: FadeColoursTwice (Bank 3)

Fade the screen colours towards black twice

Drawing the screen

Subroutine: FadeColours (Bank 3)

Fade the screen colours towards black

Drawing the screen

Subroutine: SetPaletteColours (Bank 3)

Set the view's palette from the entries in the XX3 palette table

Drawing the screen

Subroutine: FadeToBlack (Bank 3)

Fade the screen to black over the next four VBlanks

Drawing the screen

Subroutine: FadeToColour (Bank 3)

Reverse-fade the screen from black to full colour over the next four VBlanks

Universe

Variable: systemPalettes (Bank 3)

Palettes for the system images

Drawing the screen

Variable: viewAttrCount (Bank 3)

The number of sets of view attributes in the viewAttrOffset table

Drawing the screen

Variable: viewAttrOffset (Bank 3)

Offset to the data for each of the 24 sets of view attributes

Drawing the screen

Variable: viewAttributes0 (Bank 3)

Packed view attribute data for attribute set 0

Drawing the screen

Variable: viewAttributes1 (Bank 3)

Packed view attribute data for attribute set 1

Drawing the screen

Variable: viewAttributes2 (Bank 3)

Packed view attribute data for attribute set 2

Drawing the screen

Variable: viewAttributes3 (Bank 3)

Packed view attribute data for attribute set 3

Drawing the screen

Variable: viewAttributes4 (Bank 3)

Packed view attribute data for attribute set 4

Drawing the screen

Variable: viewAttributes5 (Bank 3)

Packed view attribute data for attribute set 5

Drawing the screen

Variable: viewAttributes6 (Bank 3)

Packed view attribute data for attribute set 6

Drawing the screen

Variable: viewAttributes7 (Bank 3)

Packed view attribute data for attribute set 7

Drawing the screen

Variable: viewAttributes8 (Bank 3)

Packed view attribute data for attribute set 8

Drawing the screen

Variable: viewAttributes9 (Bank 3)

Packed view attribute data for attribute set 9

Drawing the screen

Variable: viewAttributes10 (Bank 3)

Packed view attribute data for attribute set 10

Drawing the screen

Variable: viewAttributes11 (Bank 3)

Packed view attribute data for attribute set 11

Drawing the screen

Variable: viewAttributes12 (Bank 3)

Packed view attribute data for attribute set 12

Drawing the screen

Variable: viewAttributes13 (Bank 3)

Packed view attribute data for attribute set 13

Drawing the screen

Variable: viewAttributes14 (Bank 3)

Packed view attribute data for attribute set 14

Drawing the screen

Variable: viewAttributes15 (Bank 3)

Packed view attribute data for attribute set 15

Drawing the screen

Variable: viewAttributes16 (Bank 3)

Packed view attribute data for attribute set 16

Drawing the screen

Variable: viewAttributes17 (Bank 3)

Packed view attribute data for attribute set 17

Drawing the screen

Variable: viewAttributes18 (Bank 3)

Packed view attribute data for attribute set 18

Drawing the screen

Variable: viewAttributes19 (Bank 3)

Packed view attribute data for attribute set 19

Drawing the screen

Variable: viewAttributes20 (Bank 3)

Packed view attribute data for attribute set 20

Drawing the screen

Variable: viewAttributes21 (Bank 3)

Packed view attribute data for attribute set 21

Drawing the screen

Variable: viewAttributes22 (Bank 3)

Packed view attribute data for attribute set 22

Drawing the screen

Variable: viewAttributes23 (Bank 3)

Packed view attribute data for attribute set 23

Drawing the screen

Variable: viewAttributes_EN (Bank 3)

The view attributes to use for each view type in English

Drawing the screen

Variable: viewAttributes_DE (Bank 3)

The view attributes to use for each view type in German

Drawing the screen

Variable: viewAttributes_FR (Bank 3)

The view attributes to use for each view type in French

Drawing the screen

Variable: viewAttributesLo (Bank 3)

The low byte of the view attributes lookup table for each language

Drawing the screen

Variable: viewAttributesHi (Bank 3)

The high byte of the view attributes lookup table for each language

Drawing the screen

Subroutine: SetViewAttrs (Bank 3)

Set up attribute buffer 0 for the chosen view

Flight

Subroutine: HideSightSprites (Bank 3)

Hide the sprites for the laser sights in the space view

Flight

Subroutine: SIGHT (Bank 3)

Draw the laser crosshairs

Utility routines

Variable: Vectors_b3 (Bank 3)

Vectors and padding at the end of ROM bank 3

Bank 4
------

CategoryDetails

Start and end

Subroutine: ResetMMC1_b4 (Bank 4)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: Interrupts_b4 (Bank 4)

The IRQ and NMI handler while the MMC1 mapper reset routine is still running

Text

Variable: versionNumber_b4 (Bank 4)

The game's version number in bank 4

Status

Variable: faceCount (Bank 4)

The number of commander face images in the faceOffset table

Status

Variable: faceOffset (Bank 4)

Offset to the data for each of the 14 commander face images

Status

Variable: faceImage0 (Bank 4)

Packed image data for commander face image 0

Status

Variable: faceImage1 (Bank 4)

Packed image data for commander face image 1

Status

Variable: faceImage2 (Bank 4)

Packed image data for commander face image 2

Status

Variable: faceImage3 (Bank 4)

Packed image data for commander face image 3

Status

Variable: faceImage4 (Bank 4)

Packed image data for commander face image 4

Status

Variable: faceImage5 (Bank 4)

Packed image data for commander face image 5

Status

Variable: faceImage6 (Bank 4)

Packed image data for commander face image 6

Status

Variable: faceImage7 (Bank 4)

Packed image data for commander face image 7

Status

Variable: faceImage8 (Bank 4)

Packed image data for commander face image 8

Status

Variable: faceImage9 (Bank 4)

Packed image data for commander face image 9

Status

Variable: faceImage10 (Bank 4)

Packed image data for commander face image 10

Status

Variable: faceImage11 (Bank 4)

Packed image data for commander face image 11

Status

Variable: faceImage12 (Bank 4)

Packed image data for commander face image 12

Status

Variable: faceImage13 (Bank 4)

Packed image data for commander face image 13

Status

Variable: headCount (Bank 4)

The number of commander headshot images in the headOffset table

Status

Variable: headOffset (Bank 4)

Offset to the data for each of the 14 commander headshot images

Status

Variable: headImage0 (Bank 4)

Packed image data for commander headshot image 0

Status

Variable: headImage1 (Bank 4)

Packed image data for commander headshot image 1

Status

Variable: headImage2 (Bank 4)

Packed image data for commander headshot image 2

Status

Variable: headImage3 (Bank 4)

Packed image data for commander headshot image 3

Status

Variable: headImage4 (Bank 4)

Packed image data for commander headshot image 4

Status

Variable: headImage5 (Bank 4)

Packed image data for commander headshot image 5

Status

Variable: headImage6 (Bank 4)

Packed image data for commander headshot image 6

Status

Variable: headImage7 (Bank 4)

Packed image data for commander headshot image 7

Status

Variable: headImage8 (Bank 4)

Packed image data for commander headshot image 8

Status

Variable: headImage9 (Bank 4)

Packed image data for commander headshot image 9

Status

Variable: headImage10 (Bank 4)

Packed image data for commander headshot image 10

Status

Variable: headImage11 (Bank 4)

Packed image data for commander headshot image 11

Status

Variable: headImage12 (Bank 4)

Packed image data for commander headshot image 12

Status

Variable: headImage13 (Bank 4)

Packed image data for commander headshot image 13

Status

Variable: glassesImage (Bank 4)

Packed image data for the glasses, earrings and medallion that the commander can wear

Start and end

Variable: bigLogoImage (Bank 4)

Packed image data for the big Elite logo shown on the Start screen

Start and end

Variable: bigLogoNames (Bank 4)

Nametable entries for the big Elite logo on the Start screen

Save and load

Variable: smallLogoTile (Bank 4)

Pattern numbers in the smallLogoImage table for the sprites that make up the small Elite logo on the Save and Load screen

Save and load

Variable: cobraNames (Bank 4)

Nametable entries for the Cobra Mk III shown on the Equip Ship screen

Status

Subroutine: GetHeadshotType (Bank 4)

Get the correct headshot number for the current combat rank and status condition

Status

Variable: headShotsByRank (Bank 4)

Lookup table for headshots by rank and status condition

Status

Subroutine: GetHeadshot (Bank 4)

Fetch the headshot image for the commander and store it in the pattern buffers, starting at pattern number picturePattern

Status

Subroutine: GetCmdrImage (Bank 4)

Fetch the headshot image for the commander and store it in the pattern buffers, and send the face and glasses images to the PPU

Start and end

Subroutine: DrawBigLogo (Bank 4)

Set the pattern and nametable buffer entries for the big Elite logo on the Start screen

Drawing the screen

Subroutine: DrawImageNames (Bank 4)

Set the nametable buffer entries for the specified image

Save and load

Subroutine: DrawSmallLogo (Bank 4)

Set the sprite buffer entries for the small Elite logo on the Save and Load screen

Utility routines

Variable: Vectors_b4 (Bank 4)

Vectors and padding at the end of ROM bank 4

Bank 5
------

CategoryDetails

Start and end

Subroutine: ResetMMC1_b5 (Bank 5)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: Interrupts_b5 (Bank 5)

The IRQ and NMI handler while the MMC1 mapper reset routine is still running

Text

Variable: versionNumber_b5 (Bank 5)

The game's version number in bank 5

Universe

Variable: systemCount (Bank 5)

The number of system images in the systemOffset table

Universe

Variable: systemOffset (Bank 5)

Offset to the data for each of the 15 system images

Universe

Variable: systemImage0 (Bank 5)

Packed image data for system image 0

Universe

Variable: systemImage1 (Bank 5)

Packed image data for system image 1

Universe

Variable: systemImage2 (Bank 5)

Packed image data for system image 2

Universe

Variable: systemImage3 (Bank 5)

Packed image data for system image 3

Universe

Variable: systemImage4 (Bank 5)

Packed image data for system image 4

Universe

Variable: systemImage5 (Bank 5)

Packed image data for system image 5

Universe

Variable: systemImage6 (Bank 5)

Packed image data for system image 6

Universe

Variable: systemImage7 (Bank 5)

Packed image data for system image 7

Universe

Variable: systemImage8 (Bank 5)

Packed image data for system image 8

Universe

Variable: systemImage9 (Bank 5)

Packed image data for system image 9

Universe

Variable: systemImage10 (Bank 5)

Packed image data for system image 10

Universe

Variable: systemImage11 (Bank 5)

Packed image data for system image 11

Universe

Variable: systemImage12 (Bank 5)

Packed image data for system image 12

Universe

Variable: systemImage13 (Bank 5)

Packed image data for system image 13

Universe

Variable: systemImage14 (Bank 5)

Packed image data for system image 14

Text

Variable: Copyright message (Bank 5)

A copyright message buried in the code, complete with typo

Universe

Subroutine: GetSystemImage (Bank 5)

Fetch the background image and foreground sprite for the current system image and send them to the pattern buffers and PPU

Universe

Subroutine: GetSystemBack (Bank 5)

Fetch the background image for the current system and store it in the pattern buffers

Combat demo

Subroutine: SetDemoAutoPlay (Bank 5)

Set up the NMI handler to automatically play the demo using the controller key presses in the autoPlayKeys table

Combat demo

Variable: autoPlayKeys1Lo (Bank 5)

Low byte of the address of the auto-play key table for each language

Combat demo

Variable: autoPlayKeys1Hi (Bank 5)

High byte of the address of the auto-play key table for each language

Utility routines

Variable: Vectors_b5 (Bank 5)

Vectors and padding at the end of ROM bank 5

Bank 6 (Part 1 of 3)
--------------------

CategoryDetails

Start and end

Subroutine: ResetMMC1_b6 (Bank 6)

The MMC1 mapper reset routine at the start of the ROM bank

Start and end

Subroutine: Interrupts_b6 (Bank 6)

The IRQ and NMI handler while the MMC1 mapper reset routine is still running

Text

Variable: versionNumber_b6 (Bank 6)

The game's version number in bank 6

Sound

Subroutine: ChooseMusicS (Bank 6)

A jump table entry at the start of bank 6 for the ChooseMusic routine

Sound

Subroutine: MakeSoundsS (Bank 6)

A jump table entry at the start of bank 6 for the MakeSounds routine

Sound

Subroutine: StopSoundsS (Bank 6)

A jump table entry at the start of bank 6 for the StopSounds routine

Sound

Subroutine: EnableSoundS (Bank 6)

A jump table entry at the start of bank 6 for the EnableSound routine

Sound

Subroutine: StartEffectOnSQ1S (Bank 6)

A jump table entry at the start of bank 6 for the StartEffectOnSQ1 routine

Sound

Subroutine: StartEffectOnSQ2S (Bank 6)

A jump table entry at the start of bank 6 for the StartEffectOnSQ2 routine

Sound

Subroutine: StartEffectOnNOISES (Bank 6)

A jump table entry at the start of bank 6 for the StartEffectOnNOISE routine

Sound

Subroutine: ChooseMusic (Bank 6)

Set the tune for the background music

Sound

Subroutine: EnableSound (Bank 6)

Enable sounds (music and sound effects)

Sound

Subroutine: StopSounds (Bank 6)

Stop all sounds (music and sound effects)

Sound

Subroutine: MakeSounds (Bank 6)

Make the current sounds (music and sound effects)

Sound

Subroutine: MakeMusic (Bank 6)

Play the current music on the SQ1, SQ2, TRI and NOISE channels

Sound

Subroutine: MakeMusicOnSQ1 (Bank 6)

Play the current music on the SQ1 channel

Sound

Subroutine: ApplyEnvelopeSQ1 (Bank 6)

Apply volume and pitch changes to the SQ1 channel

Sound

Subroutine: MakeMusicOnSQ2 (Bank 6)

Play the current music on the SQ2 channel

Sound

Subroutine: ApplyEnvelopeSQ2 (Bank 6)

Apply volume and pitch changes to the SQ2 channel

Sound

Subroutine: MakeMusicOnTRI (Bank 6)

Play the current music on the TRI channel

Sound

Subroutine: ApplyEnvelopeTRI (Bank 6)

Apply volume and pitch changes to the TRI channel

Sound

Subroutine: MakeMusicOnNOISE (Bank 6)

Play the current music on the NOISE channel

Sound

Subroutine: ApplyEnvelopeNOISE (Bank 6)

Apply volume and pitch changes to the NOISE channel

Sound

Variable: noteFrequency (Bank 6)

A table of note frequencies

Sound

Subroutine: StartEffectOnSQ1 (Bank 6)

Make a sound effect on the SQ1 channel

Sound

Subroutine: StartEffect (Bank 6)

Start making a sound effect on the specified channel

Sound

Subroutine: StartEffectOnSQ2 (Bank 6)

Make a sound effect on the SQ2 channel

Sound

Subroutine: StartEffectOnNOISE (Bank 6)

Make a sound effect on the NOISE channel

Sound

Subroutine: MakeSound (Bank 6)

Make the current sound effects on the SQ1, SQ2 and NOISE channels

Sound

Subroutine: MakeSoundOnSQ1 (Bank 6)

Make the current sound effect on the SQ1 channel

Sound

Subroutine: MakeSoundOnSQ2 (Bank 6)

Make the current sound effect on the SQ2 channel

Sound

Subroutine: MakeSoundOnNOISE (Bank 6)

Make the current sound effect on the NOISE channel

Sound

Subroutine: UpdateVibratoSeeds (Bank 6)

Update the sound seeds that are used to randomise the vibrato effect

Sound

Variable: soundData (Bank 6)

Sound data for the sound effects

Sound

Variable: soundVolume (Bank 6)

Volume envelope data for the sound effects

Sound

Variable: volumeEnvelope (Bank 6)

Volume envelope data for the game music

Sound

Variable: pitchEnvelope (Bank 6)

Pitch envelope data for the game music

Bank 6 (Part 2 of 3)
--------------------

CategoryDetails

Sound

Variable: tuneData (Bank 6)

Data for the tunes played in the game

Status

Subroutine: DrawGlasses (Bank 6)

Draw a pair of dark glasses on the commander image

Status

Subroutine: DrawRightEarring (Bank 6)

Draw an earring in the commander's right ear (i.e. on the left side of the commander image

Status

Subroutine: DrawLeftEarring (Bank 6)

Draw an earring in the commander's left ear (i.e. on the right side of the commander image

Status

Subroutine: DrawMedallion (Bank 6)

Draw a medallion on the commander image

Status

Subroutine: DrawCmdrImage (Bank 6)

Draw the commander image as a coloured face image in front of a greyscale headshot image, with optional embellishments

Drawing sprites

Subroutine: DrawSpriteImage (Bank 6)

Draw an image out of sprites using patterns in sequential tiles in the pattern buffer

Icon bar

Subroutine: PauseGame (Bank 6)

Pause the game and process choices from the pause menu until the game is unpaused by another press of Start

Dashboard

Subroutine: DILX (Bank 6)

Update a bar-based indicator on the dashboard

Dashboard

Subroutine: DIALS (Bank 6)

Update the dashboard

Dashboard

Variable: conditionAttrs (Bank 6)

Sprite attributes for the status condition indicator on the dashboard

Dashboard

Variable: conditionPatts (Bank 6)

Pattern numbers for the status condition indicator on the dashboard

Dashboard

Subroutine: MSBAR_b6 (Bank 6)

Draw a specific indicator in the dashboard's missile bar

Dashboard

Variable: missileNames_b6 (Bank 6)

Tile numbers for the four missile indicators on the dashboard, as offsets from the start of tile row 22

Equipment

Subroutine: SetEquipmentSprite (Bank 6)

Set up the sprites in the sprite buffer for a specific bit of equipment to show on our Cobra Mk III on the Equip Ship screen

Equipment

Subroutine: SetLaserSprite (Bank 6)

Set up the sprites in the sprite buffer for a specific laser to show on our Cobra Mk III on the Equip Ship screen

Equipment

Subroutine: GetLaserPattern (Bank 6)

Get the pattern number for a specific laser's equipment sprite

Equipment

Variable: equipSprites (Bank 6)

Sprite configuration data for the sprites that show the equipment fitted to our Cobra Mk III on the Equip Ship screen

Equipment

Subroutine: DrawEquipment (Bank 6)

Draw the currently fitted equipment onto the Cobra Mk III image on the Equip Ship screen

Combat demo

Subroutine: ShowScrollText (Bank 6)

Show a scroll text and start the combat demo

Combat demo

Subroutine: DrawScrollInNMI (Bank 6)

Configure the NMI handler to draw the scroll text screen

Combat demo

Subroutine: GRIDSET (Bank 6)

Populate the line coordinate tables with the pixel lines for one 21-character line of scroll text

Combat demo

Subroutine: GRS1 (Bank 6)

Populate the line coordinate tables with the lines for a single scroll text character

Combat demo

Subroutine: CalculateGridLines (Bank 6)

Reset the line coordinate tables and populate them with the characters for a specified scroll text

Combat demo

Subroutine: GetScrollDivisions (Bank 6)

Set up the division calculations for the scroll text

Combat demo

Subroutine: DrawScrollText (Bank 6)

Display a Star Wars scroll text

Combat demo

Subroutine: DrawScrollFrames (Bank 6)

Draw a scroll text over multiple frames

Combat demo

Subroutine: ScrollTextUpScreen (Bank 6)

Go through the line y-coordinate table at Y1TB, moving each line coordinate up the screen by W2Y (i.e. by one full line of text)

Combat demo

Subroutine: ProjectScrollText (Bank 6)

Project a scroll text coordinate onto the screen

Combat demo

Subroutine: DrawScrollFrame (Bank 6)

Draw one frame of the scroll text

Bank 6 (Part 3 of 3)
--------------------

CategoryDetails

Combat demo

Variable: LTDEF (Bank 6)

Line definitions for characters in the Star Wars scroll text

Combat demo

Variable: NOFX (Bank 6)

The x-coordinates of the scroll text letter grid

Combat demo

Variable: NOFY (Bank 6)

The y-coordinates of the scroll text letter grid

Combat demo

Variable: scrollText1Lo (Bank 6)

Lookup table for the low byte of the address of the scrollText1 text for each language

Combat demo

Variable: scrollText1Hi (Bank 6)

Lookup table for the high byte of the address of the scrollText1 text for each language

Combat demo

Variable: scrollText2Lo (Bank 6)

Lookup table for the low byte of the address of the scrollText2 text for each language

Combat demo

Variable: scrollText2Hi (Bank 6)

Lookup table for the high byte of the address of the scrollText2 text for each language

Combat demo

Variable: creditsText1Lo (Bank 6)

Lookup table for the low byte of the address of the creditsText1 text for each language

Combat demo

Variable: creditsText1Hi (Bank 6)

Lookup table for the high byte of the address of the creditsText1 text for each language

Combat demo

Variable: creditsText2Lo (Bank 6)

Lookup table for the low byte of the address of the creditsText2 text for each language

Combat demo

Variable: creditsText2Hi (Bank 6)

Lookup table for the high byte of the address of the creditsText2 text for each language

Combat demo

Variable: creditsText3Lo (Bank 6)

Lookup table for the low byte of the address of the creditsText3 text for each language

Combat demo

Variable: creditsText3Hi (Bank 6)

Lookup table for the high byte of the address of the creditsText3 text for each language

Combat demo

Variable: scrollText1_EN (Bank 6)

Text for the first scroll text in English

Combat demo

Variable: scrollText2_EN (Bank 6)

Text for the second scroll text in English

Combat demo

Variable: scrollText1_FR (Bank 6)

Text for the first scroll text in French

Combat demo

Variable: scrollText2_FR (Bank 6)

Text for the second scroll text in French

Combat demo

Variable: scrollText1_DE (Bank 6)

Text for the first scroll text in German

Combat demo

Variable: scrollText2_DE (Bank 6)

Text for the second scroll text in German

Combat demo

Variable: creditsText1 (Bank 6)

Text for the first part of the credits scroll text

Combat demo

Variable: creditsText2 (Bank 6)

Text for the second part of the credits scroll text

Combat demo

Variable: creditsText3 (Bank 6)

Text for the third part of the credits scroll text

Save and load

Subroutine: saveHeader1_EN (Bank 6)

The Save and Load screen title in English

Save and load

Subroutine: saveHeader2_EN (Bank 6)

The subheaders for the Save and Load screen title in English

Save and load

Subroutine: saveHeader1_DE (Bank 6)

The Save and Load screen title in German

Save and load

Subroutine: saveHeader2_DE (Bank 6)

The subheaders for the Save and Load screen title in German

Save and load

Subroutine: saveHeader1_FR (Bank 6)

The Save and Load screen title in French

Save and load

Subroutine: saveHeader2_FR (Bank 6)

The subheaders for the Save and Load screen title in French

Save and load

Variable: xSaveHeader (Bank 6)

The text column for the Save and Load screen headers for each language

Save and load

Variable: saveHeader1Lo (Bank 6)

Lookup table for the low byte of the address of the saveHeader1 text for each language

Save and load

Variable: saveHeader1Hi (Bank 6)

Lookup table for the high byte of the address of the saveHeader1 text for each language

Save and load

Variable: saveHeader2Lo (Bank 6)

Lookup table for the low byte of the address of the saveHeader2 text for each language

Save and load

Variable: saveHeader2Hi (Bank 6)

Lookup table for the high byte of the address of the saveHeader2 text for each language

Save and load

Variable: saveBracketPatts (Bank 6)

Pattern numbers for the bracket on the Save and Load screen

Save and load

Subroutine: PrintSaveHeader (Bank 6)

Print header text for the Save and Load screen

Save and load

Subroutine: SVE (Bank 6)

Display the Save and Load screen and process saving and loading of commander files

Save and load

Subroutine: MoveInLeftColumn (Bank 6)

Process moving the highlight when it's in the left column (the current commander)

Save and load

Subroutine: CheckSaveLoadBar (Bank 6)

Check the icon bar buttons on the Save and Load icon bar and process any choices

Controllers

Subroutine: WaitForNoDirection (Bank 6)

Wait until the left and right buttons on controller 1 have been released and remain released for at least four VBlanks

Save and load

Subroutine: MoveToLeftColumn (Bank 6)

Move the highlight to the left column (the current commander)

Save and load

Subroutine: MoveInRightColumn (Bank 6)

Process moving the highlight when it's in the right column (the save slots)

Save and load

Subroutine: MoveInMiddleColumn (Bank 6)

Process moving the highlight when it's in the middle column

Save and load

Subroutine: DrawSaveSlotMark (Bank 6)

Draw a slot mark (a dash) next to a saved slot

Save and load

Subroutine: PrintSaveName (Bank 6)

Print the name of a specific save slot

Save and load

Subroutine: PrintCommanderName (Bank 6)

Print the commander name from the commander file in BUF, with the save count added to the end

Save and load

Subroutine: HighlightSaveName (Bank 6)

Highlight the name of a specific save slot

Save and load

Subroutine: UpdateSaveScreen (Bank 6)

Update the Save and Load screen

Save and load

Subroutine: PrintNameInMiddle (Bank 6)

Print the commander name in the middle column using the highlight font

Save and load

Subroutine: ClearNameInMiddle (Bank 6)

Remove the commander name from the middle column

Save and load

Variable: galaxySeeds (Bank 6)

The galaxy seeds to add to a commander save file

Save and load

Variable: saveSlotAddr1 (Bank 6)

The address of the first saved part for each save slot

Save and load

Variable: saveSlotAddr2 (Bank 6)

The address of the second saved part for each save slot

Save and load

Variable: saveSlotAddr3 (Bank 6)

The address of the third saved part for each save slot

Save and load

Subroutine: ResetSaveBuffer (Bank 6)

Reset the commander file buffer at BUF to the default commander

Save and load

Subroutine: CopyCommanderToBuf (Bank 6)

Copy a commander file in the BUF buffer, either from a save slot or from the currently active commander in-game

Save and load

Subroutine: ResetSaveSlots (Bank 6)

Reset the save slots for all eight save slots, so they will fail their checksums and get reset when they are next checked

Save and load

Subroutine: GetSaveAddresses (Bank 6)

Fetch the addresses of the three saved parts for a specific save slot

Save and load

Subroutine: SaveLoadCommander (Bank 6)

Either save the commander from BUF into a save slot, or load the commander from BUF into the game and start the game

Save and load

Subroutine: CheckSaveSlots (Bank 6)

Load the commanders for all eight save slots, one after the other, to check their integrity and reset any that fail their checksums

Save and load

Variable: NA2% (Bank 6)

The data block for the default commander

Save and load

Subroutine: ResetCommander (Bank 6)

Reset the current commander to the default "JAMESON" commander

Save and load

Subroutine: JAMESON (Bank 6)

Copy the default "JAMESON" commander to the buffer at currentSlot

Flight

Subroutine: DrawLightning (Bank 6)

Draw a lightning effect for the launch tunnel and E.C.M. that consists of two random lightning bolts, one above the other

Flight

Subroutine: LL164 (Bank 6)

Make the hyperspace sound and draw the hyperspace tunnel

Flight

Variable: hyperspaceColour (Bank 6)

The different colours that can be used for the hyperspace effect

Flight

Subroutine: DrawLaunchBox (Bank 6)

Draw a box as part of the launch tunnel animation

Controllers

Subroutine: InputName (Bank 6)

Get a name from the controller for searching the galaxy or changing commander name

Controllers

Subroutine: ChangeLetter (Bank 6)

Choose a letter using the up and down buttons

Save and load

Subroutine: ChangeCmdrName (Bank 6)

Process changing the commander name

Save and load

Variable: cheatCmdrName (Bank 6)

The commander name that triggers cheat mode in each language

Controllers

Subroutine: SetKeyLogger (Bank 6)

Populate the key logger table with the controller button presses

Start and end

Subroutine: ChooseLanguage (Bank 6)

Draw the Start screen and process the language choice

Start and end

Subroutine: SetChosenLanguage (Bank 6)

Set the language-related variables according to the language chosen on the Start screen

Start and end

Subroutine: SetLanguage (Bank 6)

Set the language-related variables for a specific language

Start and end

Variable: xLanguage (Bank 6)

The text column for the language buttons on the Start screen

Start and end

Variable: yLanguage (Bank 6)

The text row for the language buttons on the Start screen

Text

Variable: characterEndLang (Bank 6)

The number of the character beyond the end of the printable character set in each language

Text

Variable: decimalPointLang (Bank 6)

The decimal point character to use for each language

Text

Variable: languageLength (Bank 6)

The length of each language name

Text

Variable: tokensLo (Bank 6)

Low byte of the text token table for each language

Text

Variable: tokensHi (Bank 6)

High byte of the text token table for each language

Text

Variable: extendedTokensLo (Bank 6)

Low byte of the extended text token table for each language

Text

Variable: extendedTokensHi (Bank 6)

High byte of the extended text token table for each language

Text

Variable: languageIndexes (Bank 6)

The index of the chosen language for looking up values from language-indexed tables

Text

Variable: languageNumbers (Bank 6)

The language number for each language, as a set bit within a flag byte

Universe

Subroutine: TT24 (Bank 6)

Calculate system data from the system seeds

Drawing the screen

Subroutine: ClearDashEdge (Bank 6)

Clear the right edge of the dashboard

Utility routines

Variable: Vectors_b6 (Bank 6)

Vectors and padding at the end of ROM bank 6