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Constantin Sotiropoulos is the co-creator (with François Lionet) of AMOS BASIC, a popular video game and multimedia programming language for the Amiga computer, and STOS BASIC on the Atari ST.[1] He has also been creator of copy protection software for some French companies.
Before joining the 16-bit scene, he also developed Speedy Wonder[2] (BASIC compiler) on the Amstrad and Thomson 8-bit micro-computers, released by French company Minipuce, and ML1,[3] a macro-assembler for the same machines (released by Micro-Application). Both software were co-developed with Youri Beltchenko.