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53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
#pragma once
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#include <cstdint>
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#include "Signal.h"
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#include "Register.h"
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#include "EventArgs.h"
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namespace EightBit {
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class Bus {
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public:
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virtual ~Bus() = default;
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Signal<EventArgs> WritingByte;
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Signal<EventArgs> WrittenByte;
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Signal<EventArgs> ReadingByte;
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Signal<EventArgs> ReadByte;
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register16_t& ADDRESS() { return m_address; }
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register16_t ADDRESS() const { return m_address; }
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uint8_t& DATA() { return m_data; }
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uint8_t DATA() const { return m_data; }
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uint8_t peek() const;
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uint8_t peek(uint16_t address) const;
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void poke(uint8_t value);
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void poke(uint16_t address, uint8_t value);
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uint16_t peekWord(uint16_t address) const;
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uint8_t read();
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uint8_t read(uint16_t offset);
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uint8_t read(register16_t address);
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void write();
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void write(uint8_t value);
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void write(uint16_t offset, uint8_t value);
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void write(register16_t address, uint8_t value);
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protected:
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virtual uint8_t& reference(uint16_t address) = 0;
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virtual uint8_t reference(uint16_t address) const = 0;
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uint8_t& reference();
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uint8_t reference() const;
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private:
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uint8_t m_data = 0xff;
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register16_t m_address{ { 0xff, 0xff } };
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};
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}
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