#include "memory.h"

#include <cstdlib>

#include "Bus.h"

CPUMemoryAccessor::CPUMemoryAccessor(Bus* bus)
{
    ram = static_cast<std::uint8_t*>(malloc(0x0200));
    this->bus = bus;
}

void CPUMemoryAccessor::write(std::uint16_t _addr, std::uint8_t value)
{
    if (isRamAddress(_addr))
    {
        writeToRam(_addr, value);
    }
}

std::uint8_t CPUMemoryAccessor::read8(const std::uint16_t _addr)
{
    if (isRamAddress(_addr))
    {
        return readFromRam(_addr);
    }

    return 0x00;
}

std::uint8_t CPUMemoryAccessor::readFromRam(const std::uint16_t _addr) const
{
    return ram[_addr];
}

void CPUMemoryAccessor::writeToRam(const std::uint16_t _addr, const std::uint8_t value) const
{
    ram[_addr] = value;
}

bool CPUMemoryAccessor::isRamAddress(const std::uint16_t _addr)
{
    return _addr <= 0x0200;
}