45 lines
825 B
C++
45 lines
825 B
C++
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#include "memory.h"
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#include <cstdlib>
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#include "Bus.h"
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CPUMemoryAccessor::CPUMemoryAccessor(Bus* bus)
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{
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ram = static_cast<std::uint8_t*>(malloc(0x0200));
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this->bus = bus;
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}
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void CPUMemoryAccessor::write(std::uint16_t _addr, std::uint8_t value)
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{
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if (isRamAddress(_addr))
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{
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writeToRam(_addr, value);
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}
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}
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std::uint8_t CPUMemoryAccessor::read8(const std::uint16_t _addr)
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{
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if (isRamAddress(_addr))
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{
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return readFromRam(_addr);
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}
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return 0x00;
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}
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std::uint8_t CPUMemoryAccessor::readFromRam(const std::uint16_t _addr) const
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{
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return ram[_addr];
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}
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void CPUMemoryAccessor::writeToRam(const std::uint16_t _addr, const std::uint8_t value) const
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{
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ram[_addr] = value;
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}
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bool CPUMemoryAccessor::isRamAddress(const std::uint16_t _addr)
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{
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return _addr <= 0x0200;
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}
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