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SectorC: A C Compiler in 512 bytes

A programmer built a fully functional C compiler that fits in just 512 bytes.

Deep Dive

SectorC is a C compiler written in x86-16 assembly that fits entirely within a 512-byte boot sector, the smallest possible unit of storage on an x86 machine. It supports a surprisingly large subset of C, including global variables, functions, loops, and pointers, enabling the creation of real programs like an animated sine wave. This feat of engineering demonstrates extreme code compression and challenges assumptions about software size.

Why It Matters

It pushes the limits of minimalism in software, showing how much functionality can fit in almost no space.