Used by the routine at 24576. Decremented from 140 until it reaches zero, after which demo mode begins.

Initialised by the routine at 24576, and used by the routines at 26988, 27044 and 27170. Supposed to hold the number of active guards minus one, but may not because of a bug.

Used by the routines at 24576, 25167, 26426 and 27464. Holds 0 in demo mode, or 1 in game mode.

Initialised by the routine at 27170, and used by the routines at 25399, 25886, 26146, 26276, 26426, 26887 and 26988. When a guard's countdown timer reaches 0, the guard is brought into play.

Initialised by the routine at 24576, and used by the routines at 25562, 26173, 26276 and 26730. Holds a non-zero value when the guards are panicking.

Used by the routine at 25562.

Used by the routine at 25167 (when moving Horace in demo mode) and 25562 (when moving a guard).

Used by the routines at 27199 and 27242.

The contents of a guard's buffer (see 28131) are copied here by the routine at 27199 whenever the guard needs to be moved, drawn or otherwise examined. After that, the updated contents are copied back to the original location by the routine at 27242.

Used by the routines at 27199 and 27242. See 28088 for a description of the contents of a guard's buffer.

Used by the routines at 24576, 25399, 25562, 26276, 26730 and 27294. The values here are copied from 28631, 28639, 28647 or 28655.

Initialised by the routine at 24576, and used by the routine at 25399. Decremented on each pass through the main loop; when it reaches zero, Horace and the guards are moved.

Initialised to 8 by the routine at 24576 and decremented every time Horace returns to maze 1 via maze 4. Also used by the routines at 25399, 25562, 26730, 27044 and 27170. The value here determines the speed at which the game runs.

Initialised to 255 by the routine at 24576 just before a game starts. Holds 0, 1, 2 or 3 while a game is in progress.

Used by the routine at 25562.

Initialised by the routine at 24576, and used by the routine at 26914. When this timer reaches zero, one of the guards will drop his lunch.

Initialised by the routine at 24576, and used by the routine at 27410. Always holds a value between 0 and 8191.

Initialised by the routine at 24576, and used by the routines at 25399, 26017, 26276, 26426, 27022, 27044 and 27255. Holds 00011111 binary if the sound is on, or 00000111 binary otherwise.

Initialised by the routine at 24576, and used by the routine at 27022. Holds 0 if 'T' was being pressed the last time it was checked, or 16 otherwise.

Initialised by the routine at 24576, and used by the routines at 25167, 25399, 25562, 25886, 26426, 26657 and 26730. Holds the display file address minus 16384.

Initialised by the routine at 24576, and used by the routines at 25399, 25886, 26017, 26276 and 26657. Holds the display file address minus 16384.

Used by the routine at 25167.

Initialised by the routine at 24576, and used by the routines at 25167, 25399 and 26657.

Initialised by the routine at 24576, and used by the routines at 26426 and 26657.

Used by the routine at 26657. Incremented whenever Horace is drawn; bit 4 determines which set of animation frames (see 31943) is used: 0-3 if it's set, or 4-7 otherwise.

Initialised by the routine at 24576, and used by the routines at 26017, 26276, 26426 and 26730.

Used by the routines at 24576 and 26426.

Initialised by the routine at 24576, and used by the routine at 26017. Holds INT(S/10000)+2, where 'S' is the current score. When this value changes, Horace gets a new life.

Initialised by the routine at 24576, and used by the routines at 26017 and 26426.

Used by the routines at 25167, 25399, 26017, 26426 and 26657. Holds a non-zero value when Horace is in a tunnel.

Used by the routine at 25562.

Initialised by the routine at 24576, and used by the routines at 26730 and 27044. Holds the location of the bell in the current maze, or zero if Horace has sounded the alarm.

Used by the routines at 26730 and 27044. Incremented on each pass through the main loop; its value determines which bell animation frame is used (see 32519), and also the bell sound effect.