Routines

Address	Description
6000	The game has just loaded
6229	Main loop
624F	Read the keyboard and update Horace's sprite accordingly
6337	Move Horace and the guards
63DA	Move a guard
651E	Redraw the tiles behind Horace and the guards if they've moved
655B	Redraw the tiles behind a guard after he's moved
65A1	Add to the score if Horace has eaten something
6622	Draw the guards
663D	Draw a guard
66A4	Check whether Horace has run into a guard
673A	Lose a life
6821	Draw Horace
686A	Draw the bell and check whether Horace has sounded the alarm
6907	Check whether a guard should drop his lunch
6922	Make a guard drop his lunch if necessary
696C	Decrement the guard countdown timers
698E	Toggle the sound on/off if 'T' is pressed
69A4	Ring the bell if necessary
6A1E	Enter the next maze
6A22	Initialise the guard countdown timers
6A3F	Copy a guard buffer into the temporary location
6A6A	Copy the temporary guard buffer back into place
6A77	Make the title screen or game over sound effect
6A9E	Get the tunnel offset and bell, initial guard and entrance locations for the current maze
6B0C	Wait for 26*BC+5 T states
6B12	Collect a pseudo-random number (from the ROM)
6B21	Print the score or high score
6B48	Compute and print a digit
6B75	Draw the current maze
6BD6	Draw a sprite
6BFA	Print a tile or font character
6C0F	Convert a sprite location or display file address into an attribute file address
6C20	Check the attribute bytes at a sprite's location
6C46	Check the attribute byte at a sprite tile location
6C68	Copy maze background tiles into a guard's buffer
6C95	Copy a maze background tile into a guard's buffer
6CC2	Check the tiles next to Horace or a guard
6CFA	Identify a tile in front of a sprite
6D17	Get the location of the tile in front of a sprite
6D4E	Print 'HUNGRY' or 'HORACE' on the title screen