Want some practice in assembler? Today, I will show step-by-step how to write a BASIC interpreter and run it from the boot sector of your PC. My interpreter includes overlapping subprograms with branching recursion – otherwise, BASIC won’t fit in 512 bytes. It’s quite possible that this project becomes the most sophisticated program in your life. But after writing it by your own hands, you will be able to rightfully call yourself a hacker.