Map of the source code

Workspace: ZP (Loader)

Important variables used by the loader

Variable: B% (Loader)

VDU commands for setting the square mode 4 screen

Variable: E% (Loader)

Sound envelope definitions

Macro: FNE (Loader)

Macro definition for defining a sound envelope

Subroutine: Elite loader (Part 1 of 3) (Loader)

Set up the split screen mode, move code around, set up the sound envelopes and configure the system

Subroutine: iff_index_code (Loader)

The iff_index routine, bundled up in the loader so it can be moved to &0D7A to be run

Subroutine: iff_index (Loader)

Return the type index for this ship in the I.F.F. system

Subroutine: LOADcode (Loader)

Encrypted LOAD routine, bundled up in the loader so it can be moved to &0B00 to be run

Subroutine: LOAD (Loader)

Load the main docked code, set up various vectors, run a checksum and start the game

Subroutine: PLL1 (Part 1 of 3) (Loader)

Draw Saturn on the loading screen (draw the planet)

Subroutine: PLL1 (Part 2 of 3) (Loader)

Draw Saturn on the loading screen (draw the stars)

Subroutine: PLL1 (Part 3 of 3) (Loader)

Draw Saturn on the loading screen (draw the rings)

Subroutine: DORND (Loader)

Generate random numbers

Variable: RAND (Loader)

The random number seed used for drawing Saturn

Subroutine: SQUA2 (Loader)

Calculate (A P) = A * A

Subroutine: PIX (Loader)

Draw a single pixel at a specific coordinate

Variable: TWOS (Loader)

Ready-made single-pixel character row bytes for mode 4

Variable: CNT (Loader)

A counter for use in drawing Saturn's planetary body

Variable: CNT2 (Loader)

A counter for use in drawing Saturn's background stars

Variable: CNT3 (Loader)

A counter for use in drawing Saturn's rings

Subroutine: PROT3 (Loader)

Part of the CHKSM copy protection checksum calculation

Subroutine: ROOT (Loader)

Calculate ZP = SQRT(ZP(1 0))

Subroutine: OSB (Loader)

A convenience routine for calling OSBYTE with Y = 0

Subroutine: MVPG (Loader)

Move a page of memory

Subroutine: MVBL (Loader)

Move a multi-page block of memory

Variable: MESS1 (Loader)

The OS command string for changing the disc directory to E

Subroutine: Elite loader (Part 2 of 3) (Loader)

Include binaries for recursive tokens, Missile blueprint and images

Subroutine: TVT1code (Loader)

Code block at &1100-&11E2 that remains resident in both docked and flight mode (palettes, screen mode routine and commander data)

Variable: TVT1 (Loader)

Palette data for space and the two dashboard colour schemes

Subroutine: IRQ1 (Loader)

The main screen-mode interrupt handler (IRQ1V points here)

Variable: S1% (Loader)

The drive and directory number used when saving or loading a commander file

Variable: NA% (Loader)

The data block for the last saved commander

Variable: CHK2 (Loader)

Second checksum byte for the saved commander data file

Variable: CHK (Loader)

First checksum byte for the saved commander data file

Subroutine: BRBR1 (Loader)

Loader break handler: print a newline and the error message, and then hang the computer

Subroutine: Elite loader (Part 3 of 3) (Loader)

Include binaries for the loading screen images

Subroutine: to_dd00 (Loader)

BBC Master code for saving and restoring the MOS character set, bundled up in the loader so it can be moved to &DD00 to be run

Subroutine: do_FILEV (Loader)

The custom handler for OSFILE calls in the BBC Master version

Subroutine: savews (Loader)

Save the filing system workspace in a safe place and replace it with the MOS character set

Subroutine: do_FSCV (Loader)

The custom handler for filing system calls in the BBC Master version

Subroutine: restorews (Loader)

Restore the filing system workspace

Subroutine: do_BYTEV (Loader)

The custom handler for OSBYTE calls in the BBC Master version

Subroutine: set_vectors (Loader)

Set the FILEV, FSCV and BYTEV vectors to point to our custom handlers

Subroutine: old_BYTEV (Loader)

Call the default OSBYTE handler

Variable: wsstate (Loader)

Flag to keep track of whether we have saved or restored the filing system workspace

Macro: CHAR (Text tokens)

Macro definition for characters in the recursive token table

Macro: TWOK (Text tokens)

Macro definition for two-letter tokens in the token table

Macro: CONT (Text tokens)

Macro definition for control codes in the recursive token table

Macro: RTOK (Text tokens)

Macro definition for recursive tokens in the recursive token table

Variable: QQ18 (Text tokens)

The recursive token table for tokens 0-148

Variable: SNE (Text tokens)

Sine/cosine table

Variable: ACT (Text tokens)

Arctan table

Macro: VERTEX (Missile ship blueprint)

Macro definition for adding vertices to ship blueprints

Macro: EDGE (Missile ship blueprint)

Macro definition for adding edges to ship blueprints

Macro: FACE (Missile ship blueprint)

Macro definition for adding faces to ship blueprints

Variable: SHIP_MISSILE (Missile ship blueprint)

Ship blueprint for a missile

Variable: VEC (Missile ship blueprint)

The original value of the IRQ1 vector

Workspace: ZP (Docked)

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

Workspace: XX3 (Docked)

Temporary storage space for complex calculations

Workspace: UP (Docked)

Ship slots, variables

Workspace: K% (Docked)

Ship data blocks and ship line heaps

Workspace: WP (Docked)

Variables

Workspace: S% (Docked)

Entry points and vector addresses in the main docked code

Subroutine: INBAY (Docked)

Set the break handler and go to the docking bay without showing the tunnel or ship hangar, or checking mission progress

Subroutine: DOBEGIN (Docked)

Initialise the configuration variables and start the game

Subroutine: DEEOR, Removed (Docked)

Decrypt the main docked code between &1300 and &5FFF and the main game loop

Subroutine: DOENTRY (Docked)

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

Subroutine: SCRAM (Docked)

Set the save_lock variable and break handler

Subroutine: BRKBK (Docked)

Set the standard BRKV handler for the game

Subroutine: DETOK3 (Docked)

Print an extended recursive token from the RUTOK token table

Subroutine: MT27 (Docked)

Print the captain's name during mission briefings

Subroutine: MT28 (Docked)

Print the location hint during the mission 1 briefing

Subroutine: DETOK3, Moved (Docked)

Print an extended recursive token from the RUTOK token table

Subroutine: DETOK (Docked)

Print an extended recursive token from the TKN1 token table

Subroutine: DETOK2 (Docked)

Print an extended text token (1-255)

Subroutine: MT1 (Docked)

Switch to ALL CAPS when printing extended tokens

Subroutine: MT2 (Docked)

Switch to Sentence Case when printing extended tokens

Subroutine: MT8 (Docked)

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

Subroutine: MT9 (Docked)

Clear the screen and set the current view type to 1

Subroutine: MT13 (Docked)

Switch to lower case when printing extended tokens

Subroutine: MT6 (Docked)

Switch to standard tokens in Sentence Case

Subroutine: MT5 (Docked)

Switch to extended tokens

Subroutine: MT14 (Docked)

Switch to justified text when printing extended tokens

Subroutine: MT15 (Docked)

Switch to left-aligned text when printing extended tokens

Subroutine: MT17 (Docked)

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

Subroutine: MT18 (Docked)

Print a random 1-8 letter word in Sentence Case

Subroutine: MT19 (Docked)

Capitalise the next letter

Subroutine: VOWEL (Docked)

Test whether a character is a vowel

Variable: JMTB (Docked)

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

Variable: TKN2 (Docked)

The extended two-letter token lookup table

Variable: QQ16 (Docked)

The two-letter token lookup table

Subroutine: MVEIT (Part 1 of 9) (Docked)

Move current ship: Tidy the orientation vectors

Subroutine: MVEIT (Part 7 of 9) (Docked)

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

Subroutine: MVEIT (Part 8 of 9) (Docked)

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

Subroutine: MVEIT (Part 9 of 9) (Docked)

Return from the subroutine (the scanner is not used when docked)

Subroutine: MVT1, Removed (Docked)

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

Subroutine: MVT3, Removed (Docked)

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

Subroutine: MVS4 (Docked)

Apply pitch and roll to an orientation vector

Subroutine: MVS5 (Docked)

Apply a 3.6 degree pitch or roll to an orientation vector

Subroutine: MVT6, Removed (Docked)

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

Variable: UNIV (Docked)

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

Variable: TWOS (Docked)

Ready-made single-pixel character row bytes for mode 4

Variable: TWOS2 (Docked)

Ready-made double-pixel character row bytes for mode 4

Variable: CTWOS (Docked)

Ready-made single-pixel character row bytes for mode 5

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Subroutine: FLKB (Docked)

Flush the keyboard buffer

Subroutine: NLIN3 (Docked)

Print a title and draw a horizontal line at row 19 to box it in

Subroutine: NLIN4 (Docked)

Draw a horizontal line at pixel row 19 to box in a title

Subroutine: NLIN (Docked)

Draw a horizontal line at pixel row 23 to box in a title

Subroutine: NLIN2 (Docked)

Draw a screen-wide horizontal line at the pixel row in A

Subroutine: HLOIN2 (Docked)

Remove a line from the sun line heap and draw it on-screen

Subroutine: HLOIN (Docked)

Draw a horizontal line from (X1, Y1) to (X2, Y1)

Variable: TWFL (Docked)

Ready-made character rows for the left end of a horizontal line in mode 4

Variable: TWFR (Docked)

Ready-made character rows for the right end of a horizontal line in mode 4

Subroutine: PX3 (Docked)

Plot a single pixel at (X, Y) within a character block

Subroutine: PIX1, Removed (Docked)

Calculate (YY+1 SYL+Y) = (A P) + (S R) and draw stardust particle

Subroutine: PIXEL2, Removed (Docked)

Draw a stardust particle relative to the screen centre

Subroutine: PIXEL (Docked)

Draw a one-pixel dot, two-pixel dash or four-pixel square

Subroutine: BLINE (Docked)

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

Subroutine: FLIP, Removed (Docked)

Reflect the stardust particles in the screen diagonal and redraw the stardust field

Variable: PRXS (Docked)

Equipment prices

Subroutine: STATUS (Docked)

Show the Status Mode screen (red key f8)

Subroutine: plf2, Removed (Docked)

Print text followed by a newline and indent of 6 characters

Subroutine: status_equip (Docked)

Print equipment name, adding a sell prompt if appropriate

Variable: TENS (Docked)

A constant used when printing large numbers in BPRNT

Subroutine: pr2 (Docked)

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

Subroutine: TT11 (Docked)

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

Subroutine: BPRNT (Docked)

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

Variable: DTW1 (Docked)

A mask for applying the lower case part of Sentence Case to extended text tokens

Variable: DTW2 (Docked)

A flag that indicates whether we are currently printing a word

Variable: DTW3 (Docked)

A flag for switching between standard and extended text tokens

Variable: DTW4 (Docked)

Flags that govern how justified extended text tokens are printed

Variable: DTW5 (Docked)

The size of the justified text buffer at BUF

Variable: DTW6 (Docked)

A flag to denote whether printing in lower case is enabled for extended text tokens

Variable: DTW8 (Docked)

A mask for capitalising the next letter in an extended text token

Subroutine: FEED (Docked)

Print a newline

Subroutine: MT16 (Docked)

Print the character in variable DTW7

Subroutine: TT26 (Docked)

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

Subroutine: BELL (Docked)

Make a standard system beep

Subroutine: CHPR (Docked)

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

Subroutine: SwitchToCharSet (Docked)

Switch the MOS character definitions into memory at &C000 on a BBC Master

Subroutine: SwitchToFileSys (Docked)

Restore the filing system workspace to &C000 on a BBC Master

Subroutine: DIALS (Part 1 of 4) (Docked)

Update the dashboard: speed indicator

Subroutine: DIALS (Part 2 of 4) (Docked)

Update the dashboard: pitch and roll indicators

Subroutine: DIALS (Part 3 of 4) (Docked)

Update the dashboard: four energy banks

Subroutine: DIALS (Part 4 of 4) (Docked)

Update the dashboard: shields, fuel, laser & cabin temp, altitude

Subroutine: PZW (Docked)

Fetch the current dashboard colours, to support flashing

Subroutine: DILX (Docked)

Update a bar-based indicator on the dashboard

Subroutine: DIL2 (Docked)

Update the roll or pitch indicator on the dashboard

Subroutine: HME2 (Docked)

Search the galaxy for a system

Variable: HATB (Docked)

Ship hangar group table

Subroutine: HALL (Docked)

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

Subroutine: HANGER (Docked)

Display the ship hangar

Subroutine: HAS1 (Docked)

Draw a ship in the ship hangar

Subroutine: HAS2 (Docked)

Draw a hangar background line from left to right

Subroutine: HAS3 (Docked)

Draw a hangar background line from right to left

Subroutine: UNWISE (Docked)

Switch the main line-drawing routine between EOR and OR logic

Subroutine: LL164, Removed (Docked)

Make the hyperspace sound and draw the hyperspace tunnel

Subroutine: LAUN, Removed (Docked)

Make the launch sound and draw the launch tunnel

Subroutine: HFS1 (Docked)

Draw the launch or hyperspace tunnel

Variable: Unused block, Removed (Docked)

These bytes appear to be unused (the same block appears in both the flight and docked code)

Subroutine: MU5, Removed (Docked)

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

Subroutine: MLS2, Removed (Docked)

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

Subroutine: SQUA (Docked)

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

Subroutine: SQUA2 (Docked)

Calculate (A P) = A * A

Subroutine: MU1 (Docked)

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

Subroutine: MLU1, Removed (Docked)

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

Subroutine: MLU2, Removed (Docked)

Calculate (A P) = |A| * Q

Subroutine: MULTU (Docked)

Calculate (A P) = P * Q

Subroutine: MU11 (Docked)

Calculate (A P) = P * X

Subroutine: MU6, Removed (Docked)

Set P(1 0) = (A A)

Subroutine: FMLTU2 (Docked)

Calculate A = K * sin(A)

Subroutine: FMLTU (Docked)

Calculate A = A * Q / 256

Subroutine: Unused duplicate of MULTU, Removed (Docked)

An unused duplicate of the MULTU routine

Subroutine: MLTU2, Removed (Docked)

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

Subroutine: MUT3, Removed (Docked)

An unused routine that does the same as MUT2

Subroutine: MUT2, Removed (Docked)

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

Subroutine: MUT1, Removed (Docked)

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

Subroutine: MULT1 (Docked)

Calculate (A P) = Q * A

Subroutine: MULT12 (Docked)

Calculate (S R) = Q * A

Subroutine: TAS3, Removed (Docked)

Calculate the dot product of XX15 and an orientation vector

Subroutine: MAD (Docked)

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

Subroutine: ADD (Docked)

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

Subroutine: TIS1 (Docked)

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

Subroutine: DV42, Removed (Docked)

Calculate (P R) = 256 * DELTA / z_hi

Subroutine: DV41, Removed (Docked)

Calculate (P R) = 256 * DELTA / A

Subroutine: DVID4 (Docked)

Calculate (P R) = 256 * A / Q

Subroutine: DVID3B2, Removed (Docked)

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

Subroutine: cntr, Removed (Docked)

Apply damping to the pitch or roll dashboard indicator

Subroutine: BUMP2, Removed (Docked)

Bump up the value of the pitch or roll dashboard indicator

Subroutine: REDU2, Removed (Docked)

Reduce the value of the pitch or roll dashboard indicator

Subroutine: PDESC (Docked)

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

Subroutine: BRIEF2 (Docked)

Start mission 2

Subroutine: BRP (Docked)

Print an extended token and show the Status Mode screen

Subroutine: BRIEF3 (Docked)

Receive the briefing and plans for mission 2

Subroutine: DEBRIEF2 (Docked)

Finish mission 2

Subroutine: DEBRIEF (Docked)

Finish mission 1

Subroutine: BRIEF (Docked)

Start mission 1 and show the mission briefing

Subroutine: BRIS (Docked)

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

Subroutine: PAUSE (Docked)

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

Subroutine: MT23 (Docked)

Move to row 10, switch to white text, and switch to lower case when printing extended tokens

Subroutine: MT29 (Docked)

Move to row 6, switch to white text, and switch to lower case when printing extended tokens

Subroutine: PAS1 (Docked)

Display a rotating ship at space coordinates (0, 112, 256) and scan the keyboard

Subroutine: PAUSE2 (Docked)

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

Subroutine: SIGHT, Removed (Docked)

Draw the laser crosshairs

Subroutine: TT66 (Docked)

Clear the screen and set the current view type

Subroutine: TTX66 (Docked)

Clear the top part of the screen, draw a border box and configure the specified view

Subroutine: DELAY (Docked)

Wait for a specified time, in 1/50s of a second

Subroutine: CLYNS (Docked)

Clear the bottom three text rows of the space view

Subroutine: LYN (Docked)

Clear most of a row of pixels

Subroutine: CPIX4, Removed (Docked)

Draw a double-height dot on the dashboard

Subroutine: CPIX2, Removed (Docked)

Draw a single-height dash on the dashboard

Subroutine: WSCAN (Docked)

Wait for the vertical sync

Subroutine: tnpr (Docked)

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

Subroutine: TT20 (Docked)

Twist the selected system's seeds four times

Subroutine: TT54 (Docked)

Twist the selected system's seeds

Subroutine: TT146 (Docked)

Print the distance to the selected system in light years

Subroutine: TT60 (Docked)

Print a text token and a paragraph break

Subroutine: TTX69 (Docked)

Print a paragraph break

Subroutine: TT69 (Docked)

Set Sentence Case and print a newline

Subroutine: TT67 (Docked)

Print a newline

Subroutine: TT70 (Docked)

Display "MAINLY " and jump to TT72

Subroutine: spc (Docked)

Print a text token followed by a space

Subroutine: TT25 (Docked)

Show the Data on System screen (red key f6) or Encyclopedia screen (CTRL-f6)

Subroutine: TT24 (Docked)

Calculate system data from the system seeds

Subroutine: TT22 (Docked)

Show the Long-range Chart (red key f4)

Subroutine: TT15 (Docked)

Draw a set of crosshairs

Subroutine: TT14 (Docked)

Draw a circle with crosshairs on a chart

Subroutine: TT128 (Docked)

Draw a circle on a chart

Subroutine: TT219 (Docked)

Show the Buy Cargo screen (red key f1) or Special Cargo screen (CTRL-f1)

Subroutine: sell_yn (Docked)

Print a "Sell(Y/N)?" prompt and get a number from the keyboard

Subroutine: gnum (Docked)

Get a number from the keyboard

Subroutine: sell_jump (Docked)

Show the Sell Equipment screen (CTRL-f2)

Subroutine: NWDAV4 (Docked)

Print an "ITEM?" error, make a beep and rejoin the TT210 routine

Subroutine: TT208 (Docked)

Show the Sell Cargo screen (red key f2) or Sell Equipment screen (CTRL-f2)

Subroutine: TT210 (Docked)

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

Subroutine: TT213 (Docked)

Show the Inventory screen (red key f9)

Subroutine: TT214, Removed (Docked)

Ask a question with a "Y/N?" prompt and return the response

Subroutine: TT16 (Docked)

Move the crosshairs on a chart

Subroutine: TT103 (Docked)

Draw a small set of crosshairs on a chart

Subroutine: TT123 (Docked)

Move galactic coordinates by a signed delta

Subroutine: TT105 (Docked)

Draw crosshairs on the Short-range Chart, with clipping

Subroutine: TT23 (Docked)

Show the Short-range Chart (red key f5)

Subroutine: TT81 (Docked)

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

Subroutine: TT111 (Docked)

Set the current system to the nearest system to a point

Subroutine: hyp, Removed (Docked)

Start the hyperspace process

Subroutine: wW, Removed (Docked)

Start a hyperspace countdown

Subroutine: TTX110, Removed (Docked)

Set the current system to the nearest system and return to hyp

Subroutine: Ghy, Removed (Docked)

Perform a galactic hyperspace jump

Subroutine: jmp (Docked)

Set the current system to the selected system

Subroutine: pr6 (Docked)

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

Subroutine: pr5 (Docked)

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

Subroutine: TT147, Removed (Docked)

Print an error when a system is out of hyperspace range

Subroutine: prq (Docked)

Print a text token followed by a question mark

Subroutine: TT151 (Docked)

Print the name, price and availability of a market item

Subroutine: TT152 (Docked)

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

Subroutine: TT162 (Docked)

Print a space

Subroutine: TT160 (Docked)

Print "t" (for tonne) and a space

Subroutine: TT161 (Docked)

Print "kg" (for kilograms)

Subroutine: TT16a (Docked)

Print "g" (for grams)

Subroutine: TT163 (Docked)

Print the headers for the table of market prices

Subroutine: TT167 (Docked)

Show the Market Price screen (red key f7)

Subroutine: var (Docked)

Calculate QQ19+3 = economy * |economic_factor|

Subroutine: hyp1 (Docked)

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

Subroutine: encyclopedia (Docked)

Load and run the encyclopedia code in 1.E

Subroutine: TT110 (Docked)

Launch from a station or show the front space view Swapping between the docked and flight code

Subroutine: LCASH (Docked)

Subtract an amount of cash from the cash pot

Subroutine: MCASH (Docked)

Add an amount of cash to the cash pot

Subroutine: GCASH (Docked)

Calculate (Y X) = P * Q * 4

Subroutine: GC2 (Docked)

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

Variable: RDLI (Docked)

The OS command string for running the flight code in file 1.F

Subroutine: EQSHP (Docked)

Show the Equip Ship screen (red key f3) or Buy Ship screen (CTRL-f3)

Subroutine: dn (Docked)

Print the amount of money we have left in the cash pot, then make a short, high beep and delay for 1 second

Subroutine: dn2 (Docked)

Make a short, high beep and delay for 1 second

Subroutine: eq (Docked)

Subtract the price of equipment from the cash pot

Subroutine: prx (Docked)

Return the price of a piece of equipment

Subroutine: qv (Docked)

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

Subroutine: hm (Docked)

Select the closest system and redraw the chart crosshairs

Subroutine: refund, Removed (Docked)

Install a new laser, processing a refund if applicable

Subroutine: cpl (Docked)

Print the selected system name

Subroutine: cmn (Docked)

Print the commander's name

Subroutine: ypl (Docked)

Print the current system name

Subroutine: tal (Docked)

Print the current galaxy number

Subroutine: fwl (Docked)

Print fuel and cash levels

Subroutine: csh (Docked)

Print the current amount of cash

Subroutine: plf (Docked)

Print a text token followed by a newline

Subroutine: TT68 (Docked)

Print a text token followed by a colon

Subroutine: TT73 (Docked)

Print a colon

Subroutine: TT27 (Docked)

Print a text token

Subroutine: TT42 (Docked)

Print a letter in lower case

Subroutine: TT41 (Docked)

Print a letter according to Sentence Case

Subroutine: qw (Docked)

Print a recursive token in the range 128-145

Subroutine: crlf (Docked)

Tab to column 21 and print a colon

Subroutine: TT45 (Docked)

Print a letter in lower case

Subroutine: TT46 (Docked)

Print a character and switch to capitals

Subroutine: TT74 (Docked)

Print a character

Subroutine: TT43 (Docked)

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

Subroutine: ex (Docked)

Print a recursive token

Subroutine: DOEXP, Removed (Docked)

Draw an exploding ship

Subroutine: WPSHPS (Docked)

Clear the scanner, reset the ball line and sun line heaps

Subroutine: FLFLLS (Docked)

Reset the sun line heap

Subroutine: DET1, Removed (Docked)

Show or hide the dashboard (for when we die)

Subroutine: SHD, Removed (Docked)

Charge a shield and drain some energy from the energy banks

Subroutine: DENGY, Removed (Docked)

Drain some energy from the energy banks

Subroutine: SPS3, Removed (Docked)

Copy a space coordinate from the K% block into K3

Subroutine: GINF (Docked)

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

Subroutine: NWSHP (Docked)

Add a new ship to our local bubble of universe

Subroutine: NwS1, Removed (Docked)

Flip the sign and double an INWK byte

Subroutine: ABORT, Removed (Docked)

Disarm missiles and update the dashboard indicators

Subroutine: ABORT2, Removed (Docked)

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

Subroutine: SPBLB, Removed (Docked)

Light up the space station indicator ("S") on the dashboard

Subroutine: BULB, Removed (Docked)

Draw an indicator bulb on the dashboard

Variable: SPBT, Removed (Docked)

The bitmap definition for the space station indicator bulb

Subroutine: MSBAR (Docked)

Draw a specific indicator in the dashboard's missile bar

Subroutine: SUN (Part 1 of 4) (Docked)

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

Subroutine: SUN (Part 2 of 4) (Docked)

Draw the sun: Start from the bottom of the screen and erase the old sun line by line

Subroutine: SUN (Part 3 of 4) (Docked)

Draw the sun: Continue to move up the screen, drawing the new sun line by line

Subroutine: SUN (Part 4 of 4) (Docked)

Draw the sun: Continue to the top of the screen, erasing the old sun line by line

Subroutine: CIRCLE, Removed (Docked)

Draw a circle for the planet

Subroutine: CIRCLE2 (Docked)

Draw a circle (for the planet or chart)

Subroutine: WP1, Removed (Docked)

Reset the ball line heap

Subroutine: WPLS, Removed (Docked)

Remove the sun from the screen

Subroutine: EDGES (Docked)

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

Subroutine: PL21 (Docked)

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

Subroutine: CHKON (Docked)

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

Subroutine: TT17 (Docked)

Scan the keyboard for cursor key or joystick movement

Subroutine: ping (Docked)

Set the selected system to the current system

Variable: SFX (Docked)

Sound data

Subroutine: RESET (Docked)

Reset most variables

Subroutine: RES2 (Docked)

Reset a number of flight variables and workspaces

Subroutine: ZINF (Docked)

Reset the INWK workspace and orientation vectors

Subroutine: msblob (Docked)

Display the dashboard's missile indicators in green

Subroutine: me2 (Docked)

Remove an in-flight message from the space view

Subroutine: Ze, Removed (Docked)

Initialise the INWK workspace to a hostile ship

Subroutine: DORND (Docked)

Generate random numbers

Subroutine: Main game loop (Part 2 of 6) (Docked)

Update the main loop counters

Subroutine: Main game loop (Part 5 of 6) (Docked)

Cool down lasers, make calls to update the dashboard

Subroutine: Main game loop (Part 6 of 6) (Docked)

Process non-flight key presses (red function keys, docked keys)

Subroutine: TT102 (Docked)

Process function key, save key, hyperspace and chart key presses

Subroutine: BAD, Removed (Docked)

Calculate how bad we have been

Variable: brkd (Docked)

A flag that indicates whether a system error has occured

Subroutine: BRBR (Docked)

The standard BRKV handler for the game

Subroutine: DEATH2 (Docked)

Reset most of the game and restart from the title screen

Subroutine: BEGIN (Docked)

Initialise the configuration variables and start the game

Subroutine: TT170 (Docked)

Main entry point for the Elite game code

Subroutine: BR1 (Part 1 of 2) (Docked)

Show the "Load New Commander (Y/N)?" screen and start the game

Subroutine: BR1 (Part 2 of 2) (Docked)

Show the "Press Fire or Space, Commander" screen and start the game

Subroutine: BAY (Docked)

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

Subroutine: DFAULT (Docked)

Reset the current commander data block to the last saved commander

Subroutine: TITLE (Docked)

Display a title screen with a rotating ship and prompt

Subroutine: CHECK (Docked)

Calculate the checksum for the last saved commander data block

Subroutine: TRNME (Docked)

Copy the last saved commander's name from INWK to NA%

Subroutine: TR1 (Docked)

Copy the last saved commander's name from NA% to INWK

Subroutine: GTNMEW (Docked)

Fetch the name of a commander file to save or load

Subroutine: MT26 (Docked)

Fetch a line of text from the keyboard

Variable: RLINE (Docked)

The OSWORD configuration block used to fetch a line of text from the keyboard

Subroutine: ZERO (Docked)

Reset the local bubble of universe and ship status

Subroutine: ZEBC (Docked)

Zero-fill pages &B and &C

Subroutine: ZES1 (Docked)

Zero-fill the page whose number is in X

Subroutine: ZES2 (Docked)

Zero-fill a specific page

Variable: CTLI (Docked)

The OS command string for cataloguing a disc

Variable: DELI (Docked)

The OS command string for deleting a file

Subroutine: CATS (Docked)

Ask for a disc drive number and print a catalogue of that drive

Subroutine: DELT (Docked)

Catalogue a disc, ask for a filename to delete, and delete the file

Variable: stack, Removed (Docked)

Temporary storage for the stack pointer when switching the BRKV handler between BRBR and MEBRK

Subroutine: MEBRK (Docked)

The BRKV handler for disc access operations

Subroutine: CAT (Docked)

Catalogue a disc, wait for a key press and display the disc access menu

Subroutine: retry (Docked)

Scan the keyboard until a key is pressed and display the disc access menu

Subroutine: SVE (Docked)

Save the commander file

Subroutine: confirm (Docked)

Print "ARE YOU SURE?" and wait for a response

Subroutine: QUS1 (Docked)

Save or load the commander file

Subroutine: GTDRV (Docked)

Get an ASCII disc drive number from the keyboard

Subroutine: LOD (Docked)

Load a commander file

Subroutine: FX200 (Docked)

Set the behaviour of the ESCAPE and BREAK keys

Subroutine: GTNMES, Removed (Docked)

An unused routine that fetches the name of a commander file

Subroutine: SPS1, Removed (Docked)

Calculate the vector to the planet, sun or station and store it in XX15

Subroutine: TAS2, Removed (Docked)

Normalise the three-coordinate vector in K3

Subroutine: NORM (Docked)

Normalise the three-coordinate vector in XX15

Subroutine: RDKEY (Docked)

Scan the keyboard for key presses

Subroutine: ECMOF (Docked)

Switch off the E.C.M.

Subroutine: EXNO3, Removed (Docked)

Make an explosion sound

Subroutine: BEEP (Docked)

Make a short, high beep

Subroutine: EXNO2, Removed (Docked)

Process us making a kill

Subroutine: EXNO, Removed (Docked)

Make the sound of a laser strike or ship explosion

Subroutine: NOISE (Docked)

Make the sound whose number is in A

Subroutine: NO3 (Docked)

Make a sound from a prepared sound block

Subroutine: NOS1 (Docked)

Prepare a sound block

Subroutine: CTRL (Docked)

Scan the keyboard to see if CTRL is currently pressed

Subroutine: DKS4 (Docked)

Scan the keyboard to see if a specific key is being pressed

Subroutine: DKS2 (Docked)

Read the joystick position

Subroutine: DKS3 (Docked)

Toggle a configuration setting and emit a beep

Subroutine: DKJ1, Removed (Docked)

Read joystick and flight controls

Subroutine: DOKEY (Docked)

Scan for the joystick

Subroutine: DK4 (Docked)

Scan for pause, configuration and secondary flight keys

Subroutine: TT217 (Docked)

Scan the keyboard until a key is pressed

Subroutine: me1 (Docked)

Erase an old in-flight message and display a new one

Subroutine: MESS (Docked)

Display an in-flight message

Subroutine: mes9 (Docked)

Print a text token, possibly followed by " DESTROYED"

Macro: ITEM (Docked)

Macro definition for the market prices table

Variable: QQ23 (Docked)

Market prices table

Subroutine: TIDY (Docked)

Orthonormalise the orientation vectors for a ship

Subroutine: TIS2 (Docked)

Calculate A = A / Q

Subroutine: TIS3 (Docked)

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

Subroutine: DVIDT (Docked)

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

Subroutine: SHPPT (Docked)

Draw a distant ship as a point in the middle of the screen

Subroutine: LL5 (Docked)

Calculate Q = SQRT(R Q)

Subroutine: LL28 (Docked)

Calculate R = 256 * A / Q

Subroutine: LL38 (Docked)

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

Subroutine: LL51 (Docked)

Calculate the dot product of XX15 and XX16

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

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

Subroutine: LL9 (Part 2 of 12) (Docked)

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

Subroutine: LL9 (Part 3 of 12) (Docked)

Draw ship: Set up orientation vector, ship coordinate variables

Subroutine: LL9 (Part 4 of 12) (Docked)

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

Subroutine: LL9 (Part 5 of 12) (Docked)

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

Subroutine: LL9 (Part 6 of 12) (Docked)

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

Subroutine: LL61 (Docked)

Calculate (U R) = 256 * A / Q

Subroutine: LL62 (Docked)

Calculate 128 - (U R)

Subroutine: LL9 (Part 7 of 12) (Docked)

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

Subroutine: LL9 (Part 8 of 12) (Docked)

Draw ship: Calculate the screen coordinates of visible vertices

Subroutine: LL9 (Part 9 of 12) (Docked)

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

Subroutine: LL9 (Part 10 of 12) (Docked)

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

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

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

Subroutine: LL145 (Part 2 of 4) (Docked)

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

Subroutine: LL145 (Part 3 of 4) (Docked)

Clip line: Calculate the line's gradient

Subroutine: LL145 (Part 4 of 4) (Docked)

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

Subroutine: LL9 (Part 11 of 12) (Docked)

Draw ship: Add all visible edges to the ship line heap

Subroutine: LL9 (Part 12 of 12) (Docked)

Draw ship: Draw all the visible edges from the ship line heap

Subroutine: LL118 (Docked)

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

Subroutine: LL120 (Docked)

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

Subroutine: LL123 (Docked)

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

Subroutine: LL129 (Docked)

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

Subroutine: n_buyship (Docked)

Show the Buy Ship screen (CTRL-f3)

Subroutine: n_load (Docked)

Load the name and flight characteristics for the current ship type

Variable: count_offs (Docked)

Offsets from LASER for equipment that takes up space in the hold

Subroutine: n_name (Docked)

Print the type of a given ship

Subroutine: n_price (Docked)

Set K(0 1 2 3) to the price of a given ship

Subroutine: cour_buy (Docked)

Show the Special Cargo screen (CTRL-f1)

Subroutine: cour_count (Docked)

Generate a single special cargo mission and display its menu item

Subroutine: cour_dock (Docked)

Update the current special cargo delivery mission on docking

Subroutine: stay_here (Docked)

Pay a docking fee and refresh the system's market prices

Subroutine: GVL (Docked)

Calculate the availability of market items

Variable: new_offsets (Docked)

Table of offsets for each ship type

Variable: new_ships (Docked)

Ship names and prices for the different ship types we can buy

Variable: new_details (Docked)

The flight characteristics for each of the different ship types

Macro: EJMP (Docked)

Macro definition for jump tokens in the extended token table

Macro: ECHR (Docked)

Macro definition for characters in the extended token table

Macro: ETOK (Docked)

Macro definition for recursive tokens in the extended token table

Macro: ETWO (Docked)

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

Macro: ERND (Docked)

Macro definition for random tokens in the extended token table

Macro: TOKN (Docked)

Macro definition for standard tokens in the extended token table

Variable: TKN1 (Docked)

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

Variable: RUPLA (Docked)

System numbers that have extended description overrides

Variable: RUGAL (Docked)

The criteria for systems with extended description overrides

Variable: RUTOK (Docked)

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

Variable: MTIN (Docked)

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

Variable: Checksum (Docked)

Copy protection is disabled in Elite-A, so this block is unused

Variable: XX21 (Docked)

Ship blueprints lookup table for the ship hangar and mission 1 briefing

Variable: E% (Docked)

Ship blueprints default NEWB flags for the ship hangar

Macro: VERTEX (Docked)

Macro definition for adding vertices to ship blueprints

Macro: EDGE (Docked)

Macro definition for adding edges to ship blueprints

Macro: FACE (Docked)

Macro definition for adding faces to ship blueprints

Variable: SHIP_CANISTER (Docked)

Ship blueprint for a cargo canister

Variable: SHIP_SHUTTLE (Docked)

Ship blueprint for a Shuttle

Variable: SHIP_TRANSPORTER (Docked)

Ship blueprint for a Transporter

Variable: SHIP_COBRA_MK_3 (Docked)

Ship blueprint for a Cobra Mk III

Variable: SHIP_PYTHON (Docked)

Ship blueprint for a Python

Variable: SHIP_VIPER (Docked)

Ship blueprint for a Viper

Variable: SHIP_KRAIT (Docked)

Ship blueprint for a Krait

Variable: SHIP_CONSTRICTOR (Docked)

Ship blueprint for a Constrictor

Workspace: ZP (Flight)

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

Workspace: XX3 (Flight)

Temporary storage space for complex calculations

Workspace: UP (Flight)

Ship slots, variables

Workspace: K% (Flight)

Ship data blocks and ship line heaps

Workspace: WP (Flight)

Variables

Workspace: S% (Flight)

Entry points and vector addresses in the main flight code

Subroutine: INBAY (Flight)

Load and run the main docked code in 1.D

Variable: LTLI (Flight)

The OS command string for loading the docked code in file 1.D

Subroutine: DEEOR, Removed (Flight)

Decrypt the main flight code between &1300 and &55FF and jump into the main game loop

Subroutine: DOENTRY (Flight)

Load and run the docked code

Subroutine: DEATH2 (Flight)

Reset most of the game and restart from the title screen

Subroutine: Main flight loop (Part 1 of 16) (Flight)

Seed the random number generator

Subroutine: Main flight loop (Part 2 of 16) (Flight)

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

Subroutine: Main flight loop (Part 3 of 16) (Flight)

Scan for flight keys and process the results

Subroutine: Main flight loop (Part 4 of 16) (Flight)

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

Subroutine: Main flight loop (Part 5 of 16), Removed (Flight)

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

Subroutine: Main flight loop (Part 6 of 16) (Flight)

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

Subroutine: Main flight loop (Part 7 of 16) (Flight)

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

Subroutine: Main flight loop (Part 8 of 16) (Flight)

For each nearby ship: Process us potentially scooping this item

Subroutine: Main flight loop (Part 9 of 16) (Flight)

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

Subroutine: Main flight loop (Part 10 of 16) (Flight)

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

Subroutine: Main flight loop (Part 11 of 16) (Flight)

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

Subroutine: Main flight loop (Part 12 of 16) (Flight)

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

Subroutine: Main flight loop (Part 13 of 16) (Flight)

Charge shields and energy banks

Subroutine: Main flight loop (Part 14 of 16) (Flight)

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

Subroutine: Main flight loop (Part 15 of 16) (Flight)

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

Subroutine: Main flight loop (Part 16 of 16) (Flight)

Process laser pulsing, E.C.M. energy drain, call stardust routine

Subroutine: SPIN (Flight)

Randomly spawn cargo from a destroyed ship

Variable: UNIV (Flight)

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

Variable: TWOS (Flight)

Ready-made single-pixel character row bytes for mode 4

Variable: TWOS2 (Flight)

Ready-made double-pixel character row bytes for mode 4

Variable: CTWOS (Flight)

Ready-made single-pixel character row bytes for mode 5

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Subroutine: FLKB, Removed (Flight)

Flush the keyboard buffer

Subroutine: NLIN3 (Flight)

Print a title and draw a horizontal line at row 19 to box it in

Subroutine: NLIN4 (Flight)

Draw a horizontal line at pixel row 19 to box in a title

Subroutine: NLIN (Flight)

Draw a horizontal line at pixel row 23 to box in a title

Subroutine: NLIN2 (Flight)

Draw a screen-wide horizontal line at the pixel row in A

Subroutine: HLOIN2 (Flight)

Remove a line from the sun line heap and draw it on-screen

Subroutine: HLOIN (Flight)

Draw a horizontal line from (X1, Y1) to (X2, Y1)

Variable: TWFL (Flight)

Ready-made character rows for the left end of a horizontal line in mode 4

Variable: TWFR (Flight)

Ready-made character rows for the right end of a horizontal line in mode 4

Subroutine: PX3, Removed (Flight)

Plot a single pixel at (X, Y) within a character block

Subroutine: PIX1 (Flight)

Calculate (YY+1 SYL+Y) = (A P) + (S R) and draw stardust particle

Subroutine: PIXEL2 (Flight)

Draw a stardust particle relative to the screen centre

Subroutine: PIXEL (Flight)

Draw a one-pixel dot, two-pixel dash or four-pixel square

Subroutine: BLINE (Flight)

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

Subroutine: FLIP (Flight)

Reflect the stardust particles in the screen diagonal and redraw the stardust field

Subroutine: STARS (Flight)

The main routine for processing the stardust

Subroutine: STARS1 (Flight)

Process the stardust for the front view

Subroutine: STARS6 (Flight)

Process the stardust for the rear view

Subroutine: MAS1 (Flight)

Add an orientation vector coordinate to an INWK coordinate

Subroutine: MAS2 (Flight)

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

Subroutine: MAS3 (Flight)

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

Subroutine: STATUS (Flight)

Show the Status Mode screen (red key f8)

Subroutine: plf2 (Flight)

Print text followed by a newline and indent of 6 characters

Subroutine: MVT3 (Flight)

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

Subroutine: MVS5 (Flight)

Apply a 3.6 degree pitch or roll to an orientation vector

Variable: TENS (Flight)

A constant used when printing large numbers in BPRNT

Subroutine: pr2 (Flight)

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

Subroutine: TT11 (Flight)

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

Subroutine: BPRNT (Flight)

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

Subroutine: BELL (Flight)

Make a standard system beep

Subroutine: TT26 (Flight)

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

Subroutine: DIALS (Part 1 of 4) (Flight)

Update the dashboard: speed indicator

Subroutine: DIALS (Part 2 of 4) (Flight)

Update the dashboard: pitch and roll indicators

Subroutine: DIALS (Part 3 of 4) (Flight)

Update the dashboard: four energy banks

Subroutine: DIALS (Part 4 of 4) (Flight)

Update the dashboard: shields, fuel, laser & cabin temp, altitude

Subroutine: PZW (Flight)

Fetch the current dashboard colours, to support flashing

Subroutine: DILX (Flight)

Update a bar-based indicator on the dashboard

Subroutine: DIL2 (Flight)

Update the roll or pitch indicator on the dashboard

Subroutine: ESCAPE (Flight)

Launch our escape pod

Subroutine: TACTICS (Part 1 of 7) (Flight)

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

Subroutine: TACTICS (Part 2 of 7) (Flight)

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

Subroutine: TACTICS (Part 3 of 7) (Flight)

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

Subroutine: TACTICS (Part 4 of 7) (Flight)

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

Subroutine: TACTICS (Part 5 of 7) (Flight)

Apply tactics: Consider whether to launch a missile at us

Subroutine: TACTICS (Part 6 of 7) (Flight)

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

Subroutine: TACTICS (Part 7 of 7) (Flight)

Apply tactics: Set pitch, roll, and acceleration

Subroutine: DOCKIT (Flight)

Apply docking manoeuvres to the ship in INWK

Subroutine: VCSU1 (Flight)

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

Subroutine: VCSUB (Flight)

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

Subroutine: TAS1 (Flight)

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

Subroutine: TAS4 (Flight)

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

Subroutine: TAS6 (Flight)

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

Subroutine: DCS1 (Flight)

Calculate the vector from the ideal docking position to the ship

Subroutine: HITCH (Flight)

Work out if the ship in INWK is in our crosshairs

Subroutine: FRS1 (Flight)

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

Subroutine: FRMIS (Flight)

Fire a missile from our ship

Subroutine: anger_8c (Flight)

Make the current ship angry

Subroutine: ANGRY (Flight)

Make a ship hostile

Subroutine: FR1 (Flight)

Display the "missile jammed" message

Subroutine: SESCP (Flight)

Spawn an escape pod from the current (parent) ship

Subroutine: SFS1 (Flight)

Spawn a child ship from the current (parent) ship

Subroutine: SFS2 (Flight)

Move a ship in space along one of the coordinate axes

Subroutine: LL164 (Flight)

Make the hyperspace sound and draw the hyperspace tunnel

Subroutine: LAUN (Flight)

Make the launch sound and draw the launch tunnel

Subroutine: HFS2 (Flight)

Draw the launch or hyperspace tunnel

Subroutine: STARS2 (Flight)

Process the stardust for the left or right view

Subroutine: MU5 (Flight)

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

Subroutine: MULT3 (Flight)

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

Subroutine: MLS2 (Flight)

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

Subroutine: MLS1 (Flight)

Calculate (A P) = ALP1 * A

Subroutine: SQUA (Flight)

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

Subroutine: SQUA2 (Flight)

Calculate (A P) = A * A

Subroutine: MU1 (Flight)

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

Subroutine: MLU1 (Flight)

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

Subroutine: MLU2 (Flight)

Calculate (A P) = |A| * Q

Subroutine: MULTU (Flight)

Calculate (A P) = P * Q

Subroutine: MU11 (Flight)

Calculate (A P) = P * X

Subroutine: MU6 (Flight)

Set P(1 0) = (A A)

Subroutine: FMLTU2 (Flight)

Calculate A = K * sin(A)

Subroutine: FMLTU (Flight)

Calculate A = A * Q / 256

Subroutine: Unused duplicate of MULTU (Flight)

An unused duplicate of the MULTU routine

Subroutine: MLTU2 (Flight)

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

Subroutine: MUT2 (Flight)

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

Subroutine: MUT3, Removed (Flight)

An unused routine that does the same as MUT2

Subroutine: MUT1 (Flight)

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

Subroutine: MULT1 (Flight)

Calculate (A P) = Q * A

Subroutine: MULT12 (Flight)

Calculate (S R) = Q * A

Subroutine: TAS3 (Flight)

Calculate the dot product of XX15 and an orientation vector

Subroutine: MAD (Flight)

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

Subroutine: ADD (Flight)

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

Subroutine: TIS1 (Flight)

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

Subroutine: DV42 (Flight)

Calculate (P R) = 256 * DELTA / z_hi

Subroutine: DV41 (Flight)

Calculate (P R) = 256 * DELTA / A

Subroutine: DVID4 (Flight)

Calculate (P R) = 256 * A / Q

Subroutine: DVID3B2 (Flight)

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

Subroutine: cntr (Flight)

Apply damping to the pitch or roll dashboard indicator

Subroutine: BUMP2 (Flight)

Bump up the value of the pitch or roll dashboard indicator

Subroutine: REDU2 (Flight)

Reduce the value of the pitch or roll dashboard indicator

Subroutine: ARCTAN (Flight)

Calculate A = arctan(P / Q)

Subroutine: LASLI (Flight)

Draw the laser lines for when we fire our lasers

Variable: Unused block, Removed (Flight)

These bytes appear to be unused (the same block appears in both the flight and docked code)

Subroutine: tnpr1, Removed (Flight)

Work out if we have space for one tonne of cargo

Subroutine: tnpr1 (Flight)

Work out if we have space for one tonne of cargo

Subroutine: TT20 (Flight)

Twist the selected system's seeds four times

Subroutine: TT54 (Flight)

Twist the selected system's seeds

Subroutine: TT146 (Flight)

Print the distance to the selected system in light years

Subroutine: TT60 (Flight)

Print a text token and a paragraph break

Subroutine: TTX69 (Flight)

Print a paragraph break

Subroutine: TT69 (Flight)

Set Sentence Case and print a newline

Subroutine: TT67 (Flight)

Print a newline

Subroutine: TT70 (Flight)

Display "MAINLY " and jump to TT72

Subroutine: spc (Flight)

Print a text token followed by a space

Subroutine: TT25 (Flight)

Show the Data on System screen (red key f6) or Encyclopedia screen (CTRL-f6)

Subroutine: TT24 (Flight)

Calculate system data from the system seeds

Subroutine: TT22 (Flight)

Show the Long-range Chart (red key f4)

Subroutine: TT15 (Flight)

Draw a set of crosshairs

Subroutine: TT14 (Flight)

Draw a circle with crosshairs on a chart

Subroutine: TT128 (Flight)

Draw a circle on a chart

Subroutine: TT210 (Flight)

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

Subroutine: TT213 (Flight)

Show the Inventory screen (red key f9)

Subroutine: TT16 (Flight)

Move the crosshairs on a chart

Subroutine: TT103 (Flight)

Draw a small set of crosshairs on a chart

Subroutine: TT123 (Flight)

Move galactic coordinates by a signed delta

Subroutine: TT105 (Flight)

Draw crosshairs on the Short-range Chart, with clipping

Subroutine: TT23 (Flight)

Show the Short-range Chart (red key f5)

Subroutine: TT81 (Flight)

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

Subroutine: TT111 (Flight)

Set the current system to the nearest system to a point

Subroutine: hyp (Flight)

Start the hyperspace process

Subroutine: wW (Flight)

Start a hyperspace countdown

Subroutine: Ghy (Flight)

Perform a galactic hyperspace jump

Subroutine: jmp (Flight)

Set the current system to the selected system

Subroutine: ee3 (Flight)

Print the hyperspace countdown in the top-left of the screen

Subroutine: pr6 (Flight)

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

Subroutine: pr5 (Flight)

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

Subroutine: TT147 (Flight)

Print an error when a system is out of hyperspace range

Subroutine: prq (Flight)

Print a text token followed by a question mark

Subroutine: TTX110, Removed (Flight)

Set the current system to the nearest system and return to hyp

Subroutine: TT151 (Flight)

Print the name, price and availability of a market item

Subroutine: TT152 (Flight)

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

Subroutine: TT162 (Flight)

Print a space

Subroutine: TT160 (Flight)

Print "t" (for tonne) and a space

Subroutine: TT161 (Flight)

Print "kg" (for kilograms)

Subroutine: TT16a (Flight)

Print "g" (for grams)

Subroutine: TT163 (Flight)

Print the headers for the table of market prices

Subroutine: TT167 (Flight)

Show the Market Price screen (red key f7)

Subroutine: var (Flight)

Calculate QQ19+3 = economy * |economic_factor|

Subroutine: hyp1 (Flight)

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

Subroutine: GVL (Flight)

Calculate the availability of market items

Subroutine: GTHG (Flight)

Spawn a Thargoid ship and a Thargon companion

Subroutine: MJP (Flight)

Process a mis-jump into witchspace

Subroutine: TT18 (Flight)

Try to initiate a jump into hyperspace

Subroutine: TT110 (Flight)

Launch from a station or show the front space view

Subroutine: TT114 (Flight)

Display either the Long-range or Short-range Chart

Subroutine: MCASH (Flight)

Add an amount of cash to the cash pot

Subroutine: GCASH, Removed (Flight)

Calculate (Y X) = P * Q * 4

Subroutine: GC2 (Flight)

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

Subroutine: hm (Flight)

Select the closest system and redraw the chart crosshairs

Subroutine: cpl (Flight)

Print the selected system name

Subroutine: cmn (Flight)

Print the commander's name

Subroutine: ypl (Flight)

Print the current system name

Subroutine: tal (Flight)

Print the current galaxy number

Subroutine: fwl (Flight)

Print fuel and cash levels

Subroutine: csh (Flight)

Print the current amount of cash

Subroutine: plf (Flight)

Print a text token followed by a newline

Subroutine: TT68 (Flight)

Print a text token followed by a colon

Subroutine: TT73 (Flight)

Print a colon

Subroutine: TT27 (Flight)

Print a text token

Subroutine: TT42 (Flight)

Print a letter in lower case

Subroutine: TT41 (Flight)

Print a letter according to Sentence Case

Subroutine: qw (Flight)

Print a recursive token in the range 128-145

Subroutine: crlf (Flight)

Tab to column 21 and print a colon

Subroutine: TT45 (Flight)

Print a letter in lower case

Subroutine: TT46 (Flight)

Print a character and switch to capitals

Subroutine: TT74 (Flight)

Print a character

Subroutine: TT43 (Flight)

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

Subroutine: ex (Flight)

Print a recursive token

Subroutine: DOEXP (Flight)

Draw an exploding ship

Subroutine: SOS1 (Flight)

Update the missile indicators, set up the planet data block

Subroutine: SOLAR (Flight)

Set up various aspects of arriving in a new system

Subroutine: NWSTARS (Flight)

Initialise the stardust field

Subroutine: nWq (Flight)

Create a random cloud of stardust

Subroutine: WPSHPS (Flight)

Clear the scanner, reset the ball line and sun line heaps

Subroutine: FLFLLS (Flight)

Reset the sun line heap

Subroutine: DET1 (Flight)

Show or hide the dashboard (for when we die)

Subroutine: SHD (Flight)

Charge a shield and drain some energy from the energy banks

Subroutine: DENGY (Flight)

Drain some energy from the energy banks

Subroutine: SPS2 (Flight)

Calculate (Y X) = A / 10

Subroutine: COMPAS (Flight)

Update the compass

Subroutine: SPS2, Moved (Flight)

Calculate (Y X) = A / 10

Subroutine: SPS4, Removed (Flight)

Calculate the vector to the space station

Subroutine: SP1, Removed (Flight)

Draw the space station on the compass

Subroutine: SP2 (Flight)

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

Subroutine: DOT (Flight)

Draw a dash on the compass

Subroutine: CPIX4 (Flight)

Draw a double-height dot on the dashboard

Subroutine: CPIX2 (Flight)

Draw a single-height dash on the dashboard

Subroutine: n_oops (Flight)

Take some damage, taking our ship's shields into consideration

Subroutine: OOPS (Flight)

Take some damage

Subroutine: SPS3 (Flight)

Copy a space coordinate from the K% block into K3

Subroutine: GINF (Flight)

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

Subroutine: NWSPS (Flight)

Add a new space station to our local bubble of universe

Subroutine: NWSHP (Flight)

Add a new ship to our local bubble of universe

Subroutine: NwS1 (Flight)

Flip the sign and double an INWK byte

Subroutine: ABORT (Flight)

Disarm missiles and update the dashboard indicators

Subroutine: ABORT2 (Flight)

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

Subroutine: ECBLB2 (Flight)

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

Subroutine: ECBLB (Flight)

Light up the E.C.M. indicator bulb ("E") on the dashboard

Subroutine: SPBLB (Flight)

Light up the space station indicator ("S") on the dashboard

Subroutine: BULB (Flight)

Draw an indicator bulb on the dashboard

Variable: ECBT (Flight)

The character bitmap for the E.C.M. indicator bulb

Variable: SPBT (Flight)

The bitmap definition for the space station indicator bulb

Subroutine: MSBAR (Flight)

Draw a specific indicator in the dashboard's missile bar

Subroutine: PROJ (Flight)

Project the current ship or planet onto the screen

Subroutine: PL2 (Flight)

Remove the planet or sun from the screen

Subroutine: PLANET (Flight)

Draw the planet or sun

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

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

Subroutine: PL9 (Part 2 of 3) (Flight)

Draw the planet's equator and meridian

Subroutine: PL9 (Part 3 of 3) (Flight)

Draw the planet's crater

Subroutine: PLS1 (Flight)

Calculate (Y A) = nosev_x / z

Subroutine: PLS2 (Flight)

Draw a half-ellipse

Subroutine: PLS22 (Flight)

Draw an ellipse or half-ellipse

Subroutine: SUN (Part 1 of 4) (Flight)

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

Subroutine: SUN (Part 2 of 4) (Flight)

Draw the sun: Start from the bottom of the screen and erase the old sun line by line

Subroutine: SUN (Part 3 of 4) (Flight)

Draw the sun: Continue to move up the screen, drawing the new sun line by line

Subroutine: SUN (Part 4 of 4) (Flight)

Draw the sun: Continue to the top of the screen, erasing the old sun line by line

Subroutine: CIRCLE (Flight)

Draw a circle for the planet

Subroutine: CIRCLE2 (Flight)

Draw a circle (for the planet or chart)

Subroutine: WPLS2 (Flight)

Remove the planet from the screen

Subroutine: WP1 (Flight)

Reset the ball line heap

Subroutine: WPLS (Flight)

Remove the sun from the screen

Subroutine: EDGES (Flight)

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

Subroutine: CHKON (Flight)

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

Subroutine: PL21 (Flight)

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

Subroutine: PLS3 (Flight)

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

Subroutine: PLS4 (Flight)

Calculate CNT2 = arctan(P / A) / 4

Subroutine: PLS5 (Flight)

Calculate roofv_x / z and roofv_y / z

Subroutine: PLS6 (Flight)

Calculate (X K) = (A P+1 P) / (z_sign z_hi z_lo)

Subroutine: TT17 (Flight)

Scan the keyboard for cursor key or joystick movement

Subroutine: ping (Flight)

Set the selected system to the current system

Subroutine: KS3 (Flight)

Set the SLSP ship line heap pointer after shuffling ship slots

Subroutine: KS1 (Flight)

Remove the current ship from our local bubble of universe

Subroutine: KS4 (Flight)

Remove the space station and replace it with the sun

Subroutine: KS2 (Flight)

Check the local bubble for missiles with target lock

Subroutine: KILLSHP (Flight)

Remove a ship from our local bubble of universe

Variable: SFX (Flight)

Sound data

Subroutine: rand_posn (Flight)

Set up the INWK workspace for a ship in a random ship position

Subroutine: THERE (Flight)

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

Subroutine: RESET (Flight)

Reset most variables

Subroutine: RES2 (Flight)

Reset a number of flight variables and workspaces

Subroutine: ZINF (Flight)

Reset the INWK workspace and orientation vectors

Subroutine: msblob (Flight)

Display the dashboard's missile indicators in green

Subroutine: me2 (Flight)

Remove an in-flight message from the space view

Subroutine: Ze (Flight)

Initialise the INWK workspace to a hostile ship

Subroutine: DORND (Flight)

Generate random numbers

Subroutine: Main game loop (Part 1 of 6) (Flight)

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

Subroutine: Main game loop (Part 2 of 6) (Flight)

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

Subroutine: Main game loop (Part 3 of 6) (Flight)

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

Subroutine: Main game loop (Part 4 of 6) (Flight)

Potentially spawn a lone bounty hunter or up to four pirates

Subroutine: Main game loop (Part 5 of 6) (Flight)

Cool down lasers, make calls to update the dashboard

Subroutine: Main game loop (Part 6 of 6) (Flight)

Process non-flight key presses (red function keys, docked keys)

Subroutine: TT102 (Flight)

Process function key, save key, hyperspace and chart key presses and update the hyperspace counter

Subroutine: BAD, Removed (Flight)

Calculate how bad we have been

Subroutine: FAROF (Flight)

Compare x_hi, y_hi and z_hi with 224

Subroutine: FAROF2 (Flight)

Compare x_hi, y_hi and z_hi with A

Subroutine: MAS4 (Flight)

Calculate a cap on the maximum distance to a ship

Subroutine: DEATH (Flight)

Display the death screen

Subroutine: RSHIPS (Flight)

Launch from the station, load a new set of ship blueprints and jump into the main game loop

Subroutine: LOMOD (Flight)

Load a new ship blueprints file

Variable: SHIPI (Flight)

The OS command string for loading a ship blueprints file

Subroutine: ZERO (Flight)

Reset the local bubble of universe and ship status

Subroutine: ZES1 (Flight)

Zero-fill the page whose number is in X

Subroutine: ZES2 (Flight)

Zero-fill a specific page

Subroutine: SPS1 (Flight)

Calculate the vector to the planet, sun or station and store it in XX15

Subroutine: TAS2 (Flight)

Normalise the three-coordinate vector in K3

Subroutine: NORM (Flight)

Normalise the three-coordinate vector in XX15

Subroutine: RDKEY (Flight)

Scan the keyboard for key presses

Subroutine: WARP (Flight)

Perform an in-system jump

Subroutine: ECMOF (Flight)

Switch off the E.C.M.

Subroutine: EXNO3 (Flight)

Make an explosion sound

Subroutine: BEEP (Flight)

Make a short, high beep

Subroutine: SFRMIS (Flight)

Add an enemy missile to our local bubble of universe

Subroutine: EXNO2 (Flight)

Process us making a kill

Subroutine: EXNO (Flight)

Make the sound of a laser strike or ship explosion

Subroutine: NOISE (Flight)

Make the sound whose number is in A

Subroutine: NO3 (Flight)

Make a sound from a prepared sound block

Subroutine: NOS1 (Flight)

Prepare a sound block

Variable: KYTB (Flight)

Lookup table for in-flight keyboard controls

Variable: b_table (Flight)

Lookup table for Delta 14B joystick buttons

Subroutine: b_14 (Flight)

Scan the Delta 14B joystick buttons

Subroutine: DKS1 (Flight)

Scan the keyboard for a flight key

Subroutine: CTRL (Flight)

Scan the keyboard to see if CTRL is currently pressed

Subroutine: DKS4 (Flight)

Scan the keyboard to see if a specific key is being pressed

Subroutine: DKS2 (Flight)

Read the joystick position

Subroutine: DKS3 (Flight)

Toggle a configuration setting and emit a beep

Subroutine: DKJ1 (Flight)

Read joystick and flight controls

Subroutine: U% (Flight)

Clear the key logger

Subroutine: DOKEY (Flight)

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

Subroutine: DK4 (Flight)

Scan for pause, configuration and secondary flight keys

Subroutine: me1 (Flight)

Erase an old in-flight message and display a new one

Subroutine: ou2, Removed (Flight)

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

Subroutine: ou3, Removed (Flight)

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

Subroutine: cargo_mtok (Flight)

Print the name of a specific cargo item

Subroutine: MESS (Flight)

Display an in-flight message

Subroutine: mes9 (Flight)

Print a text token, possibly followed by " DESTROYED"

Subroutine: OUCH (Flight)

Potentially lose cargo or equipment following damage

Macro: ITEM (Flight)

Macro definition for the market prices table

Variable: QQ23 (Flight)

Market prices table

Subroutine: TIDY (Flight)

Orthonormalise the orientation vectors for a ship

Subroutine: TIS2 (Flight)

Calculate A = A / Q

Subroutine: TIS3 (Flight)

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

Subroutine: DVIDT (Flight)

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

Subroutine: SHPPT (Flight)

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

Subroutine: LL5 (Flight)

Calculate Q = SQRT(R Q)

Subroutine: LL28 (Flight)

Calculate R = 256 * A / Q

Subroutine: LL38 (Flight)

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

Subroutine: LL51 (Flight)

Calculate the dot product of XX15 and XX16

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

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

Subroutine: LL9 (Part 2 of 12) (Flight)

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

Subroutine: LL9 (Part 3 of 12) (Flight)

Draw ship: Set up orientation vector, ship coordinate variables

Subroutine: LL9 (Part 4 of 12) (Flight)

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

Subroutine: LL9 (Part 5 of 12) (Flight)

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

Subroutine: LL9 (Part 6 of 12) (Flight)

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

Subroutine: LL61 (Flight)

Calculate (U R) = 256 * A / Q

Subroutine: LL62 (Flight)

Calculate 128 - (U R)

Subroutine: LL9 (Part 7 of 12) (Flight)

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

Subroutine: LL9 (Part 8 of 12) (Flight)

Draw ship: Calculate the screen coordinates of visible vertices

Subroutine: LL9 (Part 9 of 12) (Flight)

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

Subroutine: LL9 (Part 10 of 12) (Flight)

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

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

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

Subroutine: LL145 (Part 2 of 4) (Flight)

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

Subroutine: LL145 (Part 3 of 4) (Flight)

Clip line: Calculate the line's gradient

Subroutine: LL145 (Part 4 of 4) (Flight)

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

Subroutine: LL9 (Part 11 of 12) (Flight)

Draw ship: Add all visible edges to the ship line heap

Subroutine: LL9 (Part 12 of 12) (Flight)

Draw ship: Draw all the visible edges from the ship line heap

Subroutine: LL118 (Flight)

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

Subroutine: LL120 (Flight)

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

Subroutine: LL123 (Flight)

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

Subroutine: LL129 (Flight)

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

Subroutine: MVEIT (Part 1 of 9) (Flight)

Move current ship: Tidy the orientation vectors

Subroutine: MVEIT (Part 2 of 9) (Flight)

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

Subroutine: MVEIT (Part 3 of 9) (Flight)

Move current ship: Move ship forward according to its speed

Subroutine: MVEIT (Part 4 of 9) (Flight)

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

Subroutine: MVEIT (Part 5 of 9) (Flight)

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

Subroutine: MVEIT (Part 6 of 9) (Flight)

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

Subroutine: MVEIT (Part 7 of 9) (Flight)

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

Subroutine: MVEIT (Part 8 of 9) (Flight)

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

Subroutine: MVEIT (Part 9 of 9) (Flight)

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

Subroutine: MVT1 (Flight)

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

Subroutine: MVS4 (Flight)

Apply pitch and roll to an orientation vector

Subroutine: MVT6 (Flight)

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

Subroutine: MV40 (Flight)

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

Subroutine: PU1 (Flight)

Flip the coordinate axes for the four different views

Subroutine: LOOK1 (Flight)

Initialise the space view

Subroutine: SIGHT (Flight)

Draw the laser crosshairs

Subroutine: TT66 (Flight)

Clear the screen and set the current view type

Subroutine: TTX66 (Flight)

Clear the top part of the screen, draw a border box and configure the specified view

Subroutine: DELAY (Flight)

Wait for a specified time, in 1/50s of a second

Subroutine: CLYNS (Flight)

Clear the bottom three text rows of the space view

Subroutine: LYN (Flight)

Clear most of a row of pixels

Variable: iff_xor (Flight)

The EOR value for different types of ship in the I.F.F. system for creating striped sticks in the scanner

Variable: iff_base (Flight)

Base colours for different types of ship in the I.F.F. system

Subroutine: SCAN (Flight)

Display the current ship on the scanner

Subroutine: WSCAN (Flight)

Wait for the vertical sync

Workspace: ZP (Encyclopedia)

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

Workspace: XX3 (Encyclopedia)

Temporary storage space for complex calculations

Workspace: UP (Encyclopedia)

Ship slots, variables

Workspace: K% (Encyclopedia)

Ship data blocks and ship line heaps

Workspace: WP (Encyclopedia)

Variables

Workspace: S% (Encyclopedia)

Entry points and vector addresses in the main docked code

Subroutine: INBAY (Encyclopedia)

Load and run the main docked code in 1.D

Variable: LTLI (Encyclopedia)

The OS command string for loading the docked code in file 1.D

Subroutine: launch (Encyclopedia)

Load and run the main docked code in 1.D

Subroutine: escape (Encyclopedia)

Load the main docked code so that it shows the docking tunnel

Subroutine: DOENTRY (Encyclopedia)

Initialise the encyclopedia and show the menu screen

Subroutine: BRKBK (Encyclopedia)

Set the standard BRKV handler for the game

Subroutine: write_msg3 (Encyclopedia)

Print an extended recursive token from the msg_3 token table

Subroutine: MT27 (Encyclopedia)

Print the captain's name during mission briefings

Subroutine: MT28 (Encyclopedia)

Print the location hint during the mission 1 briefing

Subroutine: DETOK (Encyclopedia)

Print an extended recursive token from the TKN1 token table

Subroutine: DETOK2 (Encyclopedia)

Print an extended text token (1-255)

Subroutine: MT1 (Encyclopedia)

Switch to ALL CAPS when printing extended tokens

Subroutine: MT2 (Encyclopedia)

Switch to Sentence Case when printing extended tokens

Subroutine: column_16 (Encyclopedia)

Tab to column 16 and start a new word when printing extended tokens

Subroutine: MT8 (Encyclopedia)

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

Subroutine: MT9 (Encyclopedia)

Clear the screen and set the current view type to 1

Subroutine: MT13 (Encyclopedia)

Switch to lower case when printing extended tokens

Subroutine: clr_vdustat (Encyclopedia)

Switch to standard tokens in lower case

Subroutine: MT6 (Encyclopedia)

Switch to standard tokens in Sentence Case

Subroutine: MT5 (Encyclopedia)

Switch to extended tokens

Subroutine: MT14 (Encyclopedia)

Switch to justified text when printing extended tokens

Subroutine: MT15 (Encyclopedia)

Switch to left-aligned text when printing extended tokens

Subroutine: MT17 (Encyclopedia)

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

Subroutine: MT18 (Encyclopedia)

Print a random 1-8 letter word in Sentence Case

Subroutine: MT19 (Encyclopedia)

Capitalise the next letter

Subroutine: VOWEL (Encyclopedia)

Test whether a character is a vowel

Variable: JMTB (Encyclopedia)

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

Variable: TKN2 (Encyclopedia)

The extended two-letter token lookup table

Variable: QQ16 (Encyclopedia)

The two-letter token lookup table

Subroutine: MVEIT (Part 1 of 9) (Encyclopedia)

Move current ship: Tidy the orientation vectors

Subroutine: MVEIT (Part 7 of 9) (Encyclopedia)

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

Subroutine: MVEIT (Part 8 of 9) (Encyclopedia)

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

Subroutine: MVEIT (Part 9 of 9) (Encyclopedia)

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

Subroutine: MVS4 (Encyclopedia)

Apply pitch and roll to an orientation vector

Subroutine: MVS5 (Encyclopedia)

Apply a 3.6 degree pitch or roll to an orientation vector

Variable: UNIV (Encyclopedia)

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

Variable: TWOS (Encyclopedia)

Ready-made single-pixel character row bytes for mode 4

Variable: TWOS2 (Encyclopedia)

Ready-made double-pixel character row bytes for mode 4

Variable: CTWOS (Encyclopedia)

Ready-made single-pixel character row bytes for mode 5

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Subroutine: FLKB (Encyclopedia)

Flush the keyboard buffer

Subroutine: NLIN3 (Encyclopedia)

Print a title and draw a horizontal line at row 19 to box it in

Subroutine: NLIN4 (Encyclopedia)

Draw a horizontal line at pixel row 19 to box in a title

Subroutine: NLIN (Encyclopedia)

Draw a horizontal line at pixel row 23 to box in a title

Subroutine: NLIN2 (Encyclopedia)

Draw a screen-wide horizontal line at the pixel row in A

Subroutine: HLOIN2 (Encyclopedia)

Remove a line from the sun line heap and draw it on-screen

Subroutine: HLOIN (Encyclopedia)

Draw a horizontal line from (X1, Y1) to (X2, Y1)

Variable: TWFL (Encyclopedia)

Ready-made character rows for the left end of a horizontal line in mode 4

Variable: TWFR (Encyclopedia)

Ready-made character rows for the right end of a horizontal line in mode 4

Subroutine: PX3 (Encyclopedia)

Plot a single pixel at (X, Y) within a character block

Subroutine: PIXEL (Encyclopedia)

Draw a one-pixel dot, two-pixel dash or four-pixel square

Subroutine: BLINE (Encyclopedia)

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

Variable: TENS (Encyclopedia)

A constant used when printing large numbers in BPRNT

Subroutine: pr2 (Encyclopedia)

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

Subroutine: TT11 (Encyclopedia)

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

Subroutine: BPRNT (Encyclopedia)

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

Variable: DTW1 (Encyclopedia)

A mask for applying the lower case part of Sentence Case to extended text tokens

Variable: DTW2 (Encyclopedia)

A flag that indicates whether we are currently printing a word

Variable: DTW3 (Encyclopedia)

A flag for switching between standard and extended text tokens

Variable: DTW4 (Encyclopedia)

Flags that govern how justified extended text tokens are printed

Variable: DTW5 (Encyclopedia)

The size of the justified text buffer at BUF

Variable: DTW6 (Encyclopedia)

A flag to denote whether printing in lower case is enabled for extended text tokens

Variable: DTW8 (Encyclopedia)

A mask for capitalising the next letter in an extended text token

Subroutine: FEED (Encyclopedia)

Print a newline

Subroutine: MT16 (Encyclopedia)

Print the character in variable DTW7

Subroutine: TT26 (Encyclopedia)

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

Subroutine: BELL (Encyclopedia)

Make a standard system beep

Subroutine: CHPR (Encyclopedia)

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

Subroutine: HME2 (Encyclopedia)

Search the galaxy for a system

Subroutine: SQUA (Encyclopedia)

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

Subroutine: SQUA2 (Encyclopedia)

Calculate (A P) = A * A

Subroutine: MU1 (Encyclopedia)

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

Subroutine: MULTU (Encyclopedia)

Calculate (A P) = P * Q

Subroutine: MU11 (Encyclopedia)

Calculate (A P) = P * X

Subroutine: FMLTU2 (Encyclopedia)

Calculate A = K * sin(A)

Subroutine: FMLTU (Encyclopedia)

Calculate A = A * Q / 256

Subroutine: MULT1 (Encyclopedia)

Calculate (A P) = Q * A

Subroutine: MULT12 (Encyclopedia)

Calculate (S R) = Q * A

Subroutine: MAD (Encyclopedia)

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

Subroutine: ADD (Encyclopedia)

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

Subroutine: TIS1 (Encyclopedia)

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

Subroutine: PDESC (Encyclopedia)

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

Subroutine: MT23 (Encyclopedia)

Move to row 10, switch to white text, and switch to lower case when printing extended tokens

Subroutine: MT29 (Encyclopedia)

Move to row 6, switch to white text, and switch to lower case when printing extended tokens

Subroutine: PAUSE2 (Encyclopedia)

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

Subroutine: TT66 (Encyclopedia)

Clear the screen and set the current view type

Subroutine: TTX66 (Encyclopedia)

Clear the top part of the screen, draw a border box and configure the specified view

Subroutine: DELAY (Encyclopedia)

Wait for a specified time, in 1/50s of a second

Subroutine: CLYNS (Encyclopedia)

Clear the bottom three text rows of the space view

Subroutine: LYN (Encyclopedia)

Clear most of a row of pixels

Subroutine: WSCAN (Encyclopedia)

Wait for the vertical sync

Subroutine: TT20 (Encyclopedia)

Twist the selected system's seeds four times

Subroutine: TT54 (Encyclopedia)

Twist the selected system's seeds

Subroutine: TT146 (Encyclopedia)

Print the distance to the selected system in light years

Subroutine: TT60 (Encyclopedia)

Print a text token and a paragraph break

Subroutine: TTX69 (Encyclopedia)

Print a paragraph break

Subroutine: TT67 (Encyclopedia)

Print a newline

Subroutine: TT70 (Encyclopedia)

Display "MAINLY " and jump to TT72

Subroutine: spc (Encyclopedia)

Print a text token followed by a space

Subroutine: TT25 (Encyclopedia)

Show the Data on System screen (red key f6) or Encyclopedia screen (CTRL-f6)

Subroutine: TT24 (Encyclopedia)

Calculate system data from the system seeds

Subroutine: TT22 (Encyclopedia)

Show the Long-range Chart (red key f4)

Subroutine: TT15 (Encyclopedia)

Draw a set of crosshairs

Subroutine: TT14 (Encyclopedia)

Draw a circle with crosshairs on a chart

Subroutine: TT128 (Encyclopedia)

Draw a circle on a chart

Subroutine: TT16 (Encyclopedia)

Move the crosshairs on a chart

Subroutine: TT103 (Encyclopedia)

Draw a small set of crosshairs on a chart

Subroutine: TT123 (Encyclopedia)

Move galactic coordinates by a signed delta

Subroutine: TT105 (Encyclopedia)

Draw crosshairs on the Short-range Chart, with clipping

Subroutine: TT23 (Encyclopedia)

Show the Short-range Chart (red key f5)

Subroutine: TT81 (Encyclopedia)

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

Subroutine: TT111 (Encyclopedia)

Set the current system to the nearest system to a point

Subroutine: pr6 (Encyclopedia)

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

Subroutine: pr5 (Encyclopedia)

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

Subroutine: TT162 (Encyclopedia)

Print a space

Variable: func_tab (Encyclopedia)

Lookup table for internal numbers of red function keys

Subroutine: buy_invnt (Encyclopedia)

Process key presses in the encyclopedia

Subroutine: gnum (Encyclopedia)

Get a number from the keyboard

Subroutine: dn2 (Encyclopedia)

Make a short, high beep and delay for 1 second

Subroutine: hm (Encyclopedia)

Select the closest system and redraw the chart crosshairs

Subroutine: cpl (Encyclopedia)

Print the selected system name

Subroutine: cmn (Encyclopedia)

Print the commander's name

Subroutine: ypl (Encyclopedia)

Print the current system name

Subroutine: tal (Encyclopedia)

Print the current galaxy number

Subroutine: fwl (Encyclopedia)

Print fuel and cash levels

Subroutine: csh (Encyclopedia)

Print the current amount of cash

Subroutine: plf (Encyclopedia)

Print a text token followed by a newline

Subroutine: TT68 (Encyclopedia)

Print a text token followed by a colon

Subroutine: TT73 (Encyclopedia)

Print a colon

Subroutine: TT27 (Encyclopedia)

Print a text token

Subroutine: TT42 (Encyclopedia)

Print a letter in lower case

Subroutine: TT41 (Encyclopedia)

Print a letter according to Sentence Case

Subroutine: qw (Encyclopedia)

Print a recursive token in the range 128-145

Subroutine: crlf (Encyclopedia)

Tab to column 21 and print a colon

Subroutine: TT45 (Encyclopedia)

Print a letter in lower case

Subroutine: TT46 (Encyclopedia)

Print a character and switch to capitals

Subroutine: TT74 (Encyclopedia)

Print a character

Subroutine: TT43 (Encyclopedia)

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

Subroutine: ex (Encyclopedia)

Print a recursive token

Subroutine: WPSHPS (Encyclopedia)

Clear the scanner, reset the ball line and sun line heaps

Subroutine: FLFLLS (Encyclopedia)

Reset the sun line heap

Subroutine: GINF (Encyclopedia)

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

Subroutine: NWSHP (Encyclopedia)

Add a new ship to our local bubble of universe

Subroutine: SUN (Part 1 of 4) (Encyclopedia)

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

Subroutine: SUN (Part 2 of 4) (Encyclopedia)

Draw the sun: Start from the bottom of the screen and erase the old sun line by line

Subroutine: SUN (Part 3 of 4) (Encyclopedia)

Draw the sun: Continue to move up the screen, drawing the new sun line by line

Subroutine: SUN (Part 4 of 4) (Encyclopedia)

Draw the sun: Continue to the top of the screen, erasing the old sun line by line

Subroutine: CIRCLE2 (Encyclopedia)

Draw a circle (for the planet or chart)

Subroutine: EDGES (Encyclopedia)

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

Subroutine: PL21 (Encyclopedia)

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

Subroutine: CHKON (Encyclopedia)

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

Subroutine: TT17 (Encyclopedia)

Scan the keyboard for cursor key or joystick movement

Subroutine: ping (Encyclopedia)

Set the selected system to the current system

Variable: SFX (Encyclopedia)

Sound data

Subroutine: RES2 (Encyclopedia)

Reset a number of flight variables and workspaces

Subroutine: ZINF (Encyclopedia)

Reset the INWK workspace and orientation vectors

Subroutine: me2 (Encyclopedia)

Remove an in-flight message from the space view

Subroutine: DORND (Encyclopedia)

Generate random numbers

Subroutine: Main game loop (Part 2 of 6) (Encyclopedia)

Update the main loop counters

Subroutine: Main game loop (Part 5 of 6) (Encyclopedia)

Cool down lasers, make calls to update the dashboard

Subroutine: Main game loop (Part 6 of 6) (Encyclopedia)

Process non-flight key presses (red function keys, docked keys)

Subroutine: TT102 (Encyclopedia)

Process function key, save key, hyperspace and chart key presses

Variable: brkd (Encyclopedia)

A flag that indicates whether a system error has occured

Subroutine: BR1 (Encyclopedia)

Show the "Load New Commander (Y/N)?" screen and start the game

Subroutine: BRBR (Encyclopedia)

The standard BRKV handler for the game

Subroutine: DEATH2 (Encyclopedia)

Reset most of the game and restart from the title screen

Subroutine: BAY (Encyclopedia)

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

Subroutine: MT26 (Encyclopedia)

Fetch a line of text from the keyboard

Variable: RLINE (Encyclopedia)

The OSWORD configuration block used to fetch a line of text from the keyboard

Subroutine: ZERO (Encyclopedia)

Reset the local bubble of universe and ship status

Subroutine: ZES1 (Encyclopedia)

Zero-fill the page whose number is in X

Subroutine: ZES2 (Encyclopedia)

Zero-fill a specific page

Subroutine: NORM (Encyclopedia)

Normalise the three-coordinate vector in XX15

Subroutine: RDKEY (Encyclopedia)

Scan the keyboard for key presses

Subroutine: ECMOF (Encyclopedia)

Switch off the E.C.M.

Subroutine: BEEP (Encyclopedia)

Make a short, high beep

Subroutine: NOISE (Encyclopedia)

Make the sound whose number is in A

Subroutine: NO3 (Encyclopedia)

Make a sound from a prepared sound block

Subroutine: NOS1 (Encyclopedia)

Prepare a sound block

Subroutine: CTRL (Encyclopedia)

Scan the keyboard to see if CTRL is currently pressed

Subroutine: DKS4 (Encyclopedia)

Scan the keyboard to see if a specific key is being pressed

Subroutine: DKS2 (Encyclopedia)

Read the joystick position

Subroutine: DKS3 (Encyclopedia)

Toggle a configuration setting and emit a beep

Subroutine: DOKEY (Encyclopedia)

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

Subroutine: DK4 (Encyclopedia)

Scan for pause, configuration and secondary flight keys

Subroutine: TT217 (Encyclopedia)

Scan the keyboard until a key is pressed

Subroutine: me1 (Encyclopedia)

Erase an old in-flight message and display a new one

Subroutine: MESS (Encyclopedia)

Display an in-flight message

Subroutine: mes9 (Encyclopedia)

Print a text token, possibly followed by " DESTROYED"

Subroutine: TIDY (Encyclopedia)

Orthonormalise the orientation vectors for a ship

Subroutine: TIS2 (Encyclopedia)

Calculate A = A / Q

Subroutine: TIS3 (Encyclopedia)

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

Subroutine: DVIDT (Encyclopedia)

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

Subroutine: SHPPT (Encyclopedia)

Draw a distant ship as a point in the middle of the screen

Subroutine: LL5 (Encyclopedia)

Calculate Q = SQRT(R Q)

Subroutine: LL28 (Encyclopedia)

Calculate R = 256 * A / Q

Subroutine: LL38 (Encyclopedia)

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

Subroutine: LL51 (Encyclopedia)

Calculate the dot product of XX15 and XX16

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

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

Subroutine: LL9 (Part 2 of 12) (Encyclopedia)

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

Subroutine: LL9 (Part 3 of 12) (Encyclopedia)

Draw ship: Set up orientation vector, ship coordinate variables

Subroutine: LL9 (Part 4 of 12) (Encyclopedia)

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

Subroutine: LL9 (Part 5 of 12) (Encyclopedia)

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

Subroutine: LL9 (Part 6 of 12) (Encyclopedia)

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

Subroutine: LL61 (Encyclopedia)

Calculate (U R) = 256 * A / Q

Subroutine: LL62 (Encyclopedia)

Calculate 128 - (U R)

Subroutine: LL9 (Part 7 of 12) (Encyclopedia)

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

Subroutine: LL9 (Part 8 of 12) (Encyclopedia)

Draw ship: Calculate the screen coordinates of visible vertices