The Hobbit (v1.0): Routine at 9206

Eating food makes the actor stronger: 10 is added to their strength (byte 5 of their record). If the target is inside a container (for example a drink in a bottle), the container's 'full' flag (bit 2) is cleared and the actor gains only 1. The food or drink then vanishes: its holder is set to $FF and all its locations to 0.

But there is a limit. If the new strength would be 128 or more, the game prints 'his foul gluttony has killed him' ('your foul gluttony has killed you' for Bilbo), and the actor dies (96DD). Bilbo starts with strength 64, so the seventh helping of food is fatal.

Eating food makes the actor stronger: 10 is added to their strength (byte 5 of their record). If the target is inside a container (for example a drink in a bottle), the container's 'full' flag (bit 2) is cleared and the actor gains only 1. The food or drink then vanishes: its holder is set to $FF and all its locations to 0. But there is a limit. If the new strength would be 128 or more, the game prints 'his foul gluttony has killed him' ('your foul gluttony has killed you' for Bilbo), and the actor dies (96DD). Bilbo starts with strength 64, so the seventh helping of food is fatal.
9206	CALL $9C99	Dry run? Then stop here: eating and drinking always work
9209	LD IX,($B5F8)	IX = the food or drink's own record
920D	LD A,(IX+$01)	Is it lying loose, or inside something (a bottle, say)?
9210	CP $FF	Is it lying loose, or inside something (a bottle, say)?
9212	JR Z,$921F	Loose: skip the container step below
9214	CALL $9B25	Inside something: IX = that container's own record
9217	RES 2,(IX+$07)	It is no longer full
921B	LD A,$01	Drinking from a container only gives 1 point of strength
921D	JR $9224	Drinking from a container only gives 1 point of strength
This entry point is used by the routine at A842.
921F	CALL $9C99	(Reached only when the action is genuinely happening, so this always passes straight through)
9222	LD A,$0A	Eating or drinking on its own gives 10 points of strength
9224	LD IX,($B5FC)	IX = the actor's own record
9228	ADD A,(IX+$05)	Add the gain to the actor's current strength
922B	CP $80	Would that take strength to 128 or more?
922D	JR NC,$9246	Yes: the meal proves fatal (see below)
922F	LD (IX+$05),A	No: store the new, higher strength
9232	LD IX,($B5F8)	IX = the food or drink's own record
9236	LD (IX+$01),$FF	It is held by nobody now...
923A	LD B,(IX+$00)	...B = how many locations it has (normally 1)...
923D	LD (IX+$10),$00	...and each of those locations becomes 0: it has vanished entirely
9241	INC IX
9243	DJNZ $923D
9245	RET
9246	LD HL,$B038	"your foul gluttony has killed you."
9249	CALL $72D4	"your foul gluttony has killed you."
924C	LD A,($B5DB)	A = the actor
924F	JP $96DD	The actor dies