Address Description
33792
The game has just loaded
34252
Display the title screen and play the theme tune
34436
Start the game (or demo mode)
34574
Main loop
35140
Display the game over sequence
35388
Decrease the air remaining in the current cavern
35445
Draw the current cavern to the screen buffer at 28672
35515
Move Willy (1)
35770
Animate a crumbling floor tile in the current cavern
35805
Move Willy (2)
36101
Kill Willy
36111
Move the horizontal guardians in the current cavern
36211
Move and draw the light beam in Solar Power Generator
36266
Draw the horizontal guardians in the current cavern
36344
Move and draw Eugene in Eugene's Lair
36469
Move and draw the Skylabs in Skylab Landing Bay
36593
Move and draw the vertical guardians in the current cavern
36707
Draw the items in the current cavern and collect any that Willy is touching
36805
Draw the portal, or move to the next cavern if Willy has entered it
36852
Draw a sprite
36904
Move to the next cavern
37098
Add to the score
37125
Move the conveyor in the current cavern
37173
Move and draw the Kong Beast in the current cavern
37403
Flip a switch in a Kong Beast cavern if Willy is touching it
37434
Check and set the attribute bytes for Willy's sprite in the buffer at 23552
37471
Check and set the attribute byte for a cell occupied by Willy's sprite
37503
Draw Willy to the screen buffer at 24576
37562
Print a message
37579
Print a single character
37596
Play the theme tune (The Blue Danube)
37675
Calculate the attribute file address for a piano key
37687
Check whether ENTER or the fire button is being pressed