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54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
//
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// MacintoshDoubleDensityDrive.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 10/07/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#ifndef MacintoshDoubleDensityDrive_hpp
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#define MacintoshDoubleDensityDrive_hpp
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#include "IWM.hpp"
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namespace Apple {
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namespace Macintosh {
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class DoubleDensityDrive: public IWMDrive {
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public:
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DoubleDensityDrive(int input_clock_rate, bool is_800k);
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/*!
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@returns @c true if this is an 800kb drive; @c false otherwise.
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*/
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bool is_800k() {
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return is_800k_;
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}
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/*!
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Sets the current rotation speed of this drive only if it is a 400kb drive.
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800kb drives select their own rotation speed based on head position,
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and ignore this input.
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*/
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void set_rotation_speed(float revolutions_per_minute);
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void set_enabled(bool) override;
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void set_control_lines(int) override;
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bool read() override;
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private:
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// To receive the proper notifications from Storage::Disk::Drive.
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void did_step(Storage::Disk::HeadPosition to_position) override;
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void did_set_disk() override;
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const bool is_800k_;
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bool has_new_disk_ = false;
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int control_state_ = 0;
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int step_direction_ = 1;
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};
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}
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}
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#endif /* MacintoshDoubleDensityDrive_hpp */
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