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60 lines
1.0 KiB
C++
60 lines
1.0 KiB
C++
//
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// 1770.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 17/09/2016.
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// Copyright © 2016 Thomas Harte. All rights reserved.
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//
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#ifndef _770_hpp
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#define _770_hpp
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#include "../../Storage/Disk/DiskDrive.hpp"
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namespace WD {
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class WD1770 {
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public:
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WD1770();
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void set_drive(std::shared_ptr<Storage::Disk::Drive> drive);
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void set_is_double_density(bool is_double_density);
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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_cycles(unsigned int number_of_cycles);
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enum Flag: uint8_t {
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MotorOn = 0x80,
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WriteProtect = 0x40,
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RecordType = 0x20,
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SpinUp = 0x20,
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RecordNotFound = 0x10,
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CRCError = 0x08,
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LostData = 0x04,
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TrackZero = 0x04,
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DataRequest = 0x02,
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Index = 0x02,
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Busy = 0x01
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};
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private:
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unsigned int cycles;
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enum class State {
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Waiting,
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BeginType1, BeginType2, BeginType3
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} state_;
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uint8_t status_;
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uint8_t track_;
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uint8_t sector_;
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uint8_t data_;
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uint8_t command_;
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bool has_command_;
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};
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}
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#endif /* _770_hpp */
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