The Hobbit: Routine at 84CC

Four headerless blocks through the ROM's SA-BYTES: the variables at SAVED_STATE, the objects at PLAYER, the timers and the characters at TIMERS, and the rooms at ROOM0 -- the same four START keeps a copy of. Then the tape is rewound and each block checked with the ROM's LD-BYTES in verify mode; an error says so and goes back to the game.

Three bytes of a character script at BARD_ORDER_STEP, which the game rewrites as it runs (BARD_SETS_STEP), are carried in the first three of the variables block; DO_LOAD puts them back.

Four headerless blocks through the ROM's SA-BYTES: the variables at SAVED_STATE, the objects at PLAYER, the timers and the characters at TIMERS, and the rooms at ROOM0 -- the same four START keeps a copy of. Then the tape is rewound and each block checked with the ROM's LD-BYTES in verify mode; an error says so and goes back to the game. Three bytes of a character script at BARD_ORDER_STEP, which the game rewrites as it runs (BARD_SETS_STEP), are carried in the first three of the variables block; DO_LOAD puts them back.
DO_SAVE	84CC	PUSH IX
	84CE	PUSH DE
	84CF	LD DE,SAVED_STATE	The script bytes into the variables block
	84D2	LD HL,BARD_ORDER_STEP
	84D5	CALL COPY_THREE
	84D8	LD A,$01	"start TAPE then PRESS ANY key."
	84DA	LD (INPUT_STYLE),A
	84DD	LD HL,MSG_START_T_A_P
	84E0	CALL RUN_MESSAGE_HL
	84E3	CALL NEW_KEYPRESS	Wait for the key
	84E6	LD A,$FF	Save the four blocks
	84E8	LD IX,SAVED_STATE
	84EC	LD DE,$001D
	84EF	CALL $04C2
	84F2	LD A,$FF
	84F4	LD IX,PLAYER
	84F8	LD DE,$0615
	84FB	CALL $04C2
	84FE	LD A,$FF
	8500	LD IX,TIMERS
	8504	LD DE,$00BF
	8507	CALL $04C2
	850A	LD A,$FF
	850C	LD IX,ROOM0
	8510	LD DE,$05D9
	8513	CALL $04C2
	8516	LD HL,MSG_R_E_W_I	"REWIND and PREPARE TAPE for VERIFICATION -- then hit ANY key."
	8519	CALL RUN_MESSAGE_HL
	851C	CALL NEW_KEYPRESS
	851F	LD A,$FF	Verify them
	8521	AND A
	8522	LD IX,SAVED_STATE
	8526	LD DE,$001D
	8529	CALL VERIFY_BLOCK
	852C	LD A,$FF
	852E	AND A
	852F	LD IX,PLAYER
	8533	LD DE,$0615
	8536	CALL VERIFY_BLOCK
	8539	LD A,$FF
	853B	AND A
	853C	LD IX,TIMERS
	8540	LD DE,$00BF
	8543	CALL VERIFY_BLOCK
	8546	LD A,$FF
	8548	AND A
	8549	LD IX,ROOM0
	854D	LD DE,$05D9
	8550	CALL VERIFY_BLOCK
This entry point is used by the routine at VERIFY_BLOCK.
TAPE_DONE	8553	DI
	8554	POP DE
	8555	POP IX
	8557	JP SPECIAL_WORD_DONE