CLK/Machines/Apple/AppleIIgs/ADB.hpp

//
//  ADB.hpp
//  Clock Signal
//
//  Created by Thomas Harte on 31/10/2020.
//  Copyright © 2020 Thomas Harte. All rights reserved.
//

#ifndef Apple_IIgs_ADB_hpp
#define Apple_IIgs_ADB_hpp

#include <cstdint>
#include <vector>
#include "../../../InstructionSets/M50740/Executor.hpp"

#include "../ADB/Bus.hpp"
#include "../ADB/Mouse.hpp"
#include "../ADB/Keyboard.hpp"

namespace Apple::IIgs::ADB {

class GLU: public InstructionSet::M50740::PortHandler {
	public:
		GLU();

		uint8_t get_keyboard_data();
		uint8_t get_mouse_data();
		uint8_t get_modifier_status();
		uint8_t get_any_key_down();

		uint8_t get_data();
		uint8_t get_status();

		void set_command(uint8_t);
		void set_status(uint8_t);
		void clear_key_strobe();

		void set_microcontroller_rom(const std::vector<uint8_t> &rom);

		void run_for(Cycles cycles);

		bool get_command_button() const;
		bool get_option_button() const;

		void set_vertical_blank(bool);
		bool get_vertical_blank() {
			return vertical_blank_;
		}

		Apple::ADB::Keyboard &keyboard() {
			return keyboard_;
		}
		Inputs::Mouse &get_mouse() {
			return mouse_;
		}

	private:
		InstructionSet::M50740::Executor executor_;

		void run_ports_for(Cycles) override;
		void set_port_output(int port, uint8_t value) override;
		uint8_t get_port_input(int port) override;

		uint8_t registers_[16]{};

		uint8_t register_address_;
		uint8_t register_latch_ = 0xff;
		bool register_strobe_ = false;

		uint8_t status_ = 0x00;

		Apple::ADB::Bus bus_;
		size_t controller_id_;

		uint8_t modifier_state_ = 0;

		bool vertical_blank_ = false;

		int visible_mouse_register_ = 2;

		// For now, attach only a keyboard and mouse.
		Apple::ADB::Mouse mouse_;
		Apple::ADB::Keyboard keyboard_;
};

}

#endif /* Apple_IIgs_ADB_hpp */