One byte per item. The value is the room the item is in, 0 when the item is inactive, and the inventory room when the player is carrying it.

Working flags copied from DefaultGameState. Named fields below are the bytes the engine addresses directly.

Bit 0 and bit 1 gate the special move out of room 55.

Cleared at the start of every pass round the game loop.

One bit per turn-based event. Process Game Events walks the bits.

One counter byte for each bit in the turn-based event flags.

Set when a turn-based event has started.

Item id for each bit in the event-state flags.

Save Game copies the configurable-exit bytes here before writing the tape block. The buffer is 50 bytes, ending at the current room.

The room the player is in. The initial image starts in room 3.

One word per item. Each entry points at an 255-terminated name.

One word per room. Rooms 0 and 1 are unused. The rest point at the room text.

One word per object. Each entry points at the noun text.

Game Start copies these 390 bytes to the item-location table.