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49 lines
812 B
C++
49 lines
812 B
C++
//
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// IWM.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 05/05/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#ifndef IWM_hpp
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#define IWM_hpp
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#include "../../ClockReceiver/ClockReceiver.hpp"
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#include <cstdint>
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namespace Apple {
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class IWM {
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public:
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IWM(int clock_rate);
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/// Sets the current external value of the data bus.
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void write(int address, uint8_t value);
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/*!
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Submits an access to address @c address.
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@returns The 8-bit value loaded to the data bus by the IWM.
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*/
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uint8_t read(int address);
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/// Advances the controller by @c cycles.
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void run_for(const Cycles cycles);
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private:
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uint8_t mode_ = 0;
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bool read_write_ready_ = true;
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bool write_overran_ = false;
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int q_switches_ = 0;
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void access(int address);
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};
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}
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#endif /* IWM_hpp */
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