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48 lines
984 B
C++
48 lines
984 B
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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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<uint16_t> WritingByte;
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Signal<uint16_t> WrittenByte;
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Signal<uint16_t> ReadingByte;
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Signal<uint16_t> ReadByte;
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register16_t& ADDRESS();
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uint8_t& DATA();
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uint8_t& placeDATA(uint8_t value);
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uint8_t& referenceDATA(uint8_t& value);
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uint8_t peek(uint16_t address);
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void poke(uint16_t address, uint8_t value);
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uint16_t peekWord(uint16_t address);
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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(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, bool& rom) = 0;
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uint8_t& reference();
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private:
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uint8_t* m_data = nullptr;
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register16_t m_address{ { 0xff, 0xff } };
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uint8_t m_temporary = 0xff; // Used to simulate ROM
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};
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}
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