To build, you need nasm and mkisofs to make bootloader binary and iso file.
When ISO file successfully generated, you can use it in any VM such as VirtualBox, VMWare or you can burn it a CD/DVD or USB to boot a real device too.
You can make to build or make run to build and start with qemu if installed.
- https://en.wikipedia.org/wiki/BIOS_interrupt_call
- https://en.wikipedia.org/wiki/INT_10H
- https://en.wikipedia.org/wiki/INT_16H
The Unlicense. Feel free to use or change it how you need.