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82 lines
1.8 KiB
C++
82 lines
1.8 KiB
C++
//
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// DiskII.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 20/04/2018.
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// Copyright © 2018 Thomas Harte. All rights reserved.
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//
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#ifndef DiskII_hpp
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#define DiskII_hpp
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#include "../../ClockReceiver/ClockReceiver.hpp"
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#include "../../ClockReceiver/Sleeper.hpp"
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#include "../../Storage/Disk/Disk.hpp"
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#include "../../Storage/Disk/Drive.hpp"
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#include <array>
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#include <cstdint>
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#include <vector>
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namespace Apple {
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/*!
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Provides an emulation of the Apple Disk II.
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*/
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class DiskII:
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public Storage::Disk::Drive::EventDelegate,
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public Sleeper::SleepObserver,
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public Sleeper {
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public:
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DiskII();
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void set_register(int address, uint8_t value);
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uint8_t get_register(int address);
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void run_for(const Cycles cycles);
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void set_state_machine(const std::vector<uint8_t> &);
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void set_disk(const std::shared_ptr<Storage::Disk::Disk> &disk, int drive);
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bool is_sleeping() override;
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private:
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enum class Control {
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P0, P1, P2, P3,
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Motor,
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};
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enum class Mode {
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Read, Write
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};
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void set_control(Control control, bool on);
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void set_mode(Mode mode);
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void select_drive(int drive);
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void set_data_register(uint8_t value);
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uint8_t get_shift_register();
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uint8_t trigger_address(int address, uint8_t value);
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void process_event(const Storage::Disk::Track::Event &event) override;
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void set_component_is_sleeping(Sleeper *component, bool is_sleeping) override;
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uint8_t state_ = 0;
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uint8_t inputs_ = 0;
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uint8_t shift_register_ = 0;
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uint8_t data_register_ = 0;
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int stepper_mask_ = 0;
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int stepper_position_ = 0;
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bool is_write_protected();
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std::array<uint8_t, 256> state_machine_;
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Storage::Disk::Drive drives_[2];
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bool drive_is_sleeping_[2];
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bool controller_can_sleep_ = false;
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int active_drive_ = 0;
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void set_controller_can_sleep();
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};
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}
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#endif /* DiskII_hpp */
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