Page Byte Address Length Description
80 160 20640 10
Clear character buffer 214
80 185 20665 41
Print a message centred across the entire screen
80 229 20709 15
Populate a row of the screen with machine code
81 160 20896 60
Change a character's name
81 220 20956 36
Guide a character onto the catwalk or off it
82 160 21152 85
Display the cast of characters and change their names
83 160 21408 11
Do essential POKEs before the game starts
83 171 21419 6
Make a walking sound effect (yellow border)
83 177 21425 67
Clear the screen and request the input method (keyboard, joystick, Int2)
84 160 21664 82
Set the input method, change the characters' names, and start the game
84 242 21746 13
Prepare addresses 23808 to 24575
85 160 21920 80
Count down from 9 to 0
93 0 23808 35
Deal with ERIC while he's falling (2)
93 35 23843 16
Deal with ERIC's flight from the saddle of the bike
93 51 23859 4
Deal with ERIC's descent from the top-floor window
93 55 23863 24
'T' pressed - throw away the water pistol
93 79 23887 20
'J' pressed - jump
93 99 23907 120
Deal with ERIC when he's jumping
93 220 24028 104
Compare blackboard contents with combinations
94 69 24133 42
'W' pressed - write on a blackboard
94 111 24175 61
Deal with ERIC when he's writing on a blackboard
94 173 24237 10
Deal with ERIC when he's firing the catapult, hitting or kissing
94 183 24247 16
Signal that ERIC is firing the catapult, hitting, or kissing
94 199 24263 31
'H' pressed - hit
94 232 24296 32
'F' pressed - fire catapult
95 8 24328 20
Make HAYLEY hit ERIC
95 28 24348 128
'K' pressed - kiss
95 157 24477 83
Play a tune
96 0 24576 101
Superimpose sprite tiles onto a tile of the play area
96 108 24684 194
Print a tile
97 48 24880 131
Update a character's animatory state and location and update the SRB
97 180 25012 14
Update the SRB for a character's current animatory state and location
97 194 25026 54
Scroll the screen left 8 columns
97 248 25080 106
Scroll the screen right 8 columns
98 100 25188 25
Copy two bytes from a command list into a character's buffer
98 125 25213 20
Collect one byte from a command list
98 145 25233 15
Get a random number
98 160 25248 48
Update the display
98 208 25296 188
Move the characters
99 140 25484 19
Terminate a command
99 159 25503 17
Call an interruptible subcommand
99 176 25520 5
Jump to an interruptible subcommand
99 181 25525 8
Set the interruptible subcommand (unused)
99 190 25534 20
Determine ERIC's y-coordinate
99 210 25554 27
Get the play area region identifier for a given location
99 237 25581 75
Guide a character to an intermediate destination
100 56 25656 21
Guide a character up a staircase
100 77 25677 22
Guide a character down a staircase
100 100 25700 112
Make a character go to a location
100 215 25815 28
Make a character go to a random location
100 243 25843 97
Determine the next move of a character following another character
101 88 25944 118
Make a teacher find ERIC
101 212 26068 66
Check whether a character is beside a chair
102 24 26136 39
Check whether a chair is occupied
102 63 26175 48
Knock the current occupant (if any) out of a chair
102 112 26224 15
Deal with a character who's been dethroned (1)
102 127 26239 24
Deal with a character who's been dethroned (2)
102 151 26263 40
Deal with a character who is looking for a seat
102 192 26304 14
Make a character find a seat
102 206 26318 60
Get the next character of a message being spoken or written
103 12 26380 73
Update the SRB for a blackboard
103 85 26453 43
Get the identifier and coordinates of the blackboard close to a character
103 128 26496 16
Move the bike if it's obstructing the boys' skool door or the gate
103 145 26513 124
Write a single character on a blackboard
104 15 26639 111
Make a teacher wipe a blackboard
104 128 26752 93
Make a character write on a blackboard
104 225 26849 60
Update the SRB so that the speech bubble is not corrupted
105 30 26910 31
Remove the speech bubble
105 61 26941 17
Print a speech bubble UDG
105 78 26958 151
Print the speech bubble
105 230 27110 33
Place a font character bitmap into a message graphic buffer
106 8 27144 128
Make a character speak
106 140 27276 87
Save the area of the screen that will be overwritten by a message box
106 228 27364 54
Copy a graphic buffer to the screen
107 27 27419 42
Write a line of text into a graphic buffer
107 70 27462 35
Print a message box
107 105 27497 73
Print the score, lines total or hi-score (2)
107 180 27572 99
Compute the decimal digits of a number
108 24 27672 131
Alter UDG references in the play area for a door, a window, a cup or the bike
108 156 27804 16
Check whether any characters were punched
108 172 27820 38
Check whether any characters have been hit by a fist, pellet or conker
108 212 27860 24
Prepare the doors, windows, cups and bike for new game
108 238 27886 17
Get the x-coordinate range within which a character can see or be seen
109 0 27904 49
Control a boy during assembly
109 50 27954 48
Check whether a target character can be seen by another character
109 98 28002 27
Check whether ERIC can be seen by an adult
109 125 28029 38
Check for main kids near a teacher
109 163 28067 18
Check whether a location is on the assembly hall stage
109 181 28085 29
Determine which floor ERIC's on when he's not standing directly on one
109 210 28114 41
Put ERIC midstride
110 0 28160 54
Move ERIC from the midstride or mid-action position and scroll the screen if necessary
110 56 28216 23
Turn ERIC round
110 80 28240 65
Check whether a character is on a staircase
110 145 28305 8
Deal with ERIC when he has stepped off the stage
110 155 28315 121
Check for walls and closed doors in front of ERIC
111 20 28436 24
'P' pressed - right
111 44 28460 24
'O' pressed - left
111 68 28484 92
'Q' pressed - up
111 160 28576 81
'A' pressed - down
111 242 28658 14
Collect the identifier and coordinates of a blackboard that will be wiped
112 0 28672 63
Check for walls, closed doors and ALBERT in front of the bike
112 64 28736 31
Open or close a door or window
112 95 28767 45
Check for a closed door in front of a character
112 142 28814 41
Check for a closed door in a character's path and open it if allowed
112 183 28855 19
Make a character open or close a door
112 205 28877 75
Close any temporarily open doors if necessary
113 24 28952 26
Score 100 points and make the sound of a mouse being caught
113 50 28978 14
Make a female character stop jumping
113 64 28992 20
'D' pressed - drop stinkbomb
113 84 29012 18
Make a walking sound effect (blue border)
113 102 29030 20
Prevent ERIC from getting past ALBERT if necessary
113 124 29052 42
Make a character open or close a door
113 173 29101 16
Move the bike if it's obstructing the skool gate
113 190 29118 60
Get the ASCII code of the last key pressed
113 250 29178 14
Get the keypress offset of the last key pressed
114 10 29194 83
Control the bike when ERIC's not sitting on the saddle
114 94 29278 184
Deal with ERIC when he's riding the bike
115 22 29462 105
Deal with ERIC when he's standing on the saddle of the bike
115 128 29568 6
Display the frog in ERIC's inventory
115 134 29574 39
'M' pressed - mount bike
115 173 29613 8
Print the score, lines total or hi-score (1)
115 181 29621 22
Add to the score and print it
115 203 29643 38
Add to the lines total and print it
115 241 29681 12
Open the Science Lab storeroom door if ERIC has the key
116 0 29696 20
Calculate appropriate coordinates for a message box
116 20 29716 118
Make a teacher give lines
116 140 29836 20
Make a sound effect
116 160 29856 39
Check whether any adults were hit by the pellet, water, sherry or conker
116 200 29896 200
Control the descent of the water, sherry or conker
117 150 30102 100
Deal with a character who has been knocked over
117 253 30205 24
Check whether a pellet has hit a cup
118 21 30229 62
Check whether a pellet has hit a cup containing water, sherry or the frog
118 84 30292 88
Check for walls, doors and windows in the path of a mouse, frog or pellet
118 172 30380 152
Control the flight of a catapult pellet
119 70 30534 9
Initialise an uninterruptible subcommand
119 79 30543 12
Check whether a character is on the top, middle or bottom floor
119 91 30555 88
Make BOY WANDER fire his catapult now and then
119 179 30643 19
Deal with BOY WANDER when he is firing
119 200 30664 42
Check whether any characters were or can be punched by ERIC or ANGELFACE
119 242 30706 33
Make ANGELFACE hit now and then
120 19 30739 46
Deal with ANGELFACE when he is hitting
120 66 30786 18
Knock down a main kid hit by a pellet
120 84 30804 102
Deal with the frog when it has been knocked out of a cup
120 186 30906 170
Control the frog
121 102 31078 13
Control a female character while she's standing on a chair or jumping (1)
121 116 31092 36
Make a female character stand on a chair or start jumping
121 152 31128 20
Control a female character while she's standing on a chair or jumping (2)
121 174 31150 102
Make any female characters near a mouse start or continue jumping
122 22 31254 208
Control a mouse
122 230 31462 40
Release some mice (if possible)
123 14 31502 70
Prepare character buffers for released mice
123 85 31573 147
Make ERIC catch a mouse or frog (if present)
123 235 31723 10
Update the SRB for ERIC or his pellet and scroll the screen if necessary
123 245 31733 13
Make ERIC catch the frog (if possible)
124 2 31746 97
Print the inventory
124 100 31844 17
Print an inventory item
124 117 31861 26
Collect the bit mask and game status buffer address for an event identifier
124 143 31887 6
Check whether a signal has been raised
124 149 31893 3
Raise the signal for a certain event (unused)
124 152 31896 7
Raise the signal for a certain event
124 161 31905 10
Lower the signal for a certain event (unused)
124 171 31915 37
Check whether a character should continue walking up and down
124 208 31952 17
Make a character walk up and down until a certain time
124 225 31969 29
Make a character walk up and down a few times or until a certain time
125 0 32000 21
Get the identifier for ERIC's location
125 21 32021 11
Check whether ERIC is where he should be
125 32 32032 22
Make any nearby teacher give ERIC lines if necessary (1)
125 54 32054 6
Make MR WACKER find the truant ERIC
125 62 32062 309
Make any nearby teacher give ERIC lines if necessary (2)
126 117 32373 6
Make MISS TAKE chase ERIC (1)
126 123 32379 53
Make MISS TAKE chase ERIC (2)
126 177 32433 62
Print the lesson and ring the bell
126 241 32497 15
Make BOY WANDER write on a blackboard
210 36 53796 1
Make a character do nothing
225 37 57637 32
'C' pressed - catch a mouse or the frog
225 69 57669 17
Deal with ERIC when he's bending over, dropping a stinkbomb etc.
226 37 57893 17
'R' pressed - release mice
226 54 57910 23
Prepare buffer 213 for use by a stinkbomb cloud
226 79 57935 7
Check whether buffer 214 is being used
240 0 61440 22
Control EINSTEIN during class
240 23 61463 24
Make EINSTEIN speak
240 47 61487 23
Make a teacher give lines to EINSTEIN or the kid he grassed up
240 72 61512 21
Check whether ERIC and EINSTEIN are in class
240 93 61533 21
Make a teacher tell the class what to do
240 115 61555 39
Restart the command list or make a teacher tell the kids to sit down
240 155 61595 28
Make a teacher find the truant ERIC
240 184 61624 7
Restart the command list
240 191 61631 26
Make a teacher find ERIC if he's absent during dinner
240 218 61658 35
Control a teacher during assembly
241 0 61696 332
Make a teacher conduct a class
242 80 62032 60
Make MR WACKER put the kids in detention
242 142 62094 81
Deal with ERIC when he's been knocked over
242 226 62178 242
Deal with ERIC when he's sitting or lying down
243 215 62423 11
'S' pressed - sit (1)
243 230 62438 22
Make ERIC sit in a chair or on the floor
243 252 62460 20
'S' pressed - sit (2)
244 19 62483 77
Collect a keypress during the game (or simulate one in demo mode)
244 96 62560 12
Make the next command be the start of the command list
244 108 62572 23
Restart the command list unless the boys' skool door is closed
244 135 62599 21
Jump forward in the command list if the boys' skool door or the gate is closed
244 156 62620 47
Wait till everyone has gone past the gate or the boys' skool door
244 204 62668 98
Make ALBERT keep an eye out for ERIC during lessons
245 50 62770 24
Set MR WACKER on his way to expel ERIC
245 74 62794 21
Make MR WACKER find the truant ERIC
245 95 62815 88
Make MR WACKER find and expel ERIC
245 190 62910 246
Prepare for a new game
246 180 63156 10
Move the characters, close doors, and give ERIC lines if necessary
246 190 63166 10
Start a new game if a key is pressed while ERIC's sitting or lying down in demo mode
246 213 63189 21
Start a new game or enter demo mode
246 234 63210 99
Main loop
247 77 63309 95
Change the lesson
247 173 63405 41
Deal with ERIC
247 215 63447 8
Place a continual subcommand routine address into a character's buffer
247 223 63455 36
Make ANGELFACE stalk HAYLEY
248 4 63492 9
Make ANGELFACE or BOY WANDER hit or fire now and then
248 13 63501 11
Restart the command list unless it's time for assembly
248 24 63512 41
Scroll the display file left or right one column
248 65 63553 8
Scroll the display file left one column
248 73 63561 15
Scroll the display file right one column
248 88 63576 10
Clear various game and lesson flags
248 98 63586 157
Deal with a stinkbomb when dropped
249 57 63801 60
Deal with MR WACKER's journey to a window
249 117 63861 17
Prepare the buffer for ERIC's catapult pellet and make a sound effect
249 134 63878 20
Check for the presence of a plant pot
249 154 63898 17
'G' pressed - fire water pistol
249 171 63915 81
Control water fired from the pistol (1)
250 57 64057 19
Control water fired from the pistol (2)
250 77 64077 164
Deal with water fired from the pistol at certain phases
250 242 64242 17
Begin ERIC's descent from a plant, a plant pot, or the assembly hall stage
251 3 64259 57
Deal with ERIC when he's stepping off a plant, a plant pot, or the assembly hall stage
251 60 64316 100
Deal with ERIC when he's standing on a plant or plant pot
251 160 64416 44
Deal with ERIC when he's falling to the floor to land on his feet
251 204 64460 100
Deal with ERIC while he's falling (1)