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A Nine-Year-Old’s Z80 Drawing Program

Full disclosure: [Óscar] isn’t nine now, but he was in 1988 when he wrote LOCS, a drawing program in Z80 assembly modeled after Logo. You can see a demo of the system in the video below. You might wonder why you’d want to study a three-decade-old program written for a CPU by a nine-year-old almost

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