CLK/Components/DiskII/MacintoshDoubleDensityDrive.hpp

//
//  MacintoshDoubleDensityDrive.hpp
//  Clock Signal
//
//  Created by Thomas Harte on 10/07/2019.
//  Copyright © 2019 Thomas Harte. All rights reserved.
//

#pragma once

#include "IWM.hpp"

namespace Apple::Macintosh {

class DoubleDensityDrive: public IWMDrive {
public:
	DoubleDensityDrive(int input_clock_rate, bool is_800k);

	/*!
		@returns @c true if this is an 800kb drive; @c false otherwise.
	*/
	bool is_800k() const {
		return is_800k_;
	}

	/*!
		Sets the current rotation speed of this drive only if it is a 400kb drive.
		800kb drives select their own rotation speed based on head position,
		and ignore this input.
	*/
	void set_rotation_speed(float revolutions_per_minute);

private:
	void set_enabled(bool) final;
	void set_control_lines(int) final;
	bool read() final;

	// To receive the proper notifications from Storage::Disk::Drive.
	void did_step(Storage::Disk::HeadPosition to_position) final;
	void did_set_disk(bool) final;

	const bool is_800k_;
	bool has_new_disk_ = false;
	int control_state_ = 0;
	int step_direction_ = 1;
};

}