Knight Lore: Routine at D111

D111: Finish reading the controls

Used by the routines at check_user_input, if2_done, kempston_done, cursor_down and keyboard_pickup. Common to every method. Bit 5 is set if any key is down other than the number keys, Caps Shift and Space. It is the pick-up key for a joystick in directional mode, where bit 4 is a direction. The byte is stored at $5BB5.
finished_input	D111	LD A,$7E	bottom two half-rows together, less Caps Shift and Space
	D113	CALL read_port	bottom two half-rows together, less Caps Shift and Space
	D116	AND $1E
	D118	PUSH BC	or'd with the A..G, Q..T, Y..P and H..Enter half-rows
	D119	LD B,A
	D11A	LD A,$99
	D11C	CALL read_port
	D11F	OR B
	D120	POP BC
	D121	JR Z,store_input	any of them: bit 5
	D123	SET 5,C	any of them: bit 5