Paradise Café: Routine at AF6B

AF6B: Clear doorway columns (room background helper)

Emits PRINT AT + PAPER=0 + PAPER=1 control codes to set up colours. Prints 96 ($60) blank space chars ($80) from the current cursor position, blanking the two columns where the door sprite was. Always called via JP at the end of draw_room_bg, never via CALL.
clear_doorway	AF6B	LD A,$16	Emit PRINT AT row 11, col 0 ($16,$0B,$00 via RST $10)
	AF6D	RST $10	Emit PRINT AT row 11, col 0 ($16,$0B,$00 via RST $10)
	AF6E	LD A,$11	Emit PAPER=0 ($11,$00), then PAPER=1 ($11,$01)
	AF70	RST $10
	AF71	LD A,$00
	AF73	RST $10
	AF74	LD A,$11	B = $60 (96 blank chars)
	AF76	RST $10
	AF77	LD A,$01
	AF79	RST $10
	AF7A	LD B,$60
clear_doorway_0	AF7C	PUSH BC	Loop: emit $80 (space) × 96 via DJNZ
	AF7D	LD A,$80
	AF7F	RST $10
	AF80	POP BC
	AF81	DJNZ clear_doorway_0
	AF83	RET