Method getTotalMemory

lab7/src/3/src/kernel/memory.cpp:90–106

}

int MemoryManager::getTotalMemory()
{

    if(!this->totalMemory)
    {
        int memory = *((int *)MEMORY_SIZE_ADDRESS);
        // ax寄存器保存的内容
        int low = memory & 0xffff;
        // bx寄存器保存的内容
        int high = (memory >> 16) & 0xffff;

        this->totalMemory = low * 1024 + high * 64 * 1024;
        
    }

    return this->totalMemory;
}