Foundation of Kernel

I finished the basic printing functions.

E820 Memory Map

I also loaded the E820 memory map into the kernel so the kernel knows which areas of memory are usable or reserved.

Screenshot Information

In the picture below, the first row of numbers is the base address. The second row of numbers is the memory length (base address - memory length = physical memory area). The third row of numbers indicates the memory type (usable or reserved). In addition, the memory information will differ depending on how much memory I allocated to QEMU.

In conclusion, the usable memory is 8.59GB.