KnightOS was an interesting operating system
Read OriginalThe article details KnightOS, a hobbyist operating system developed for Texas Instruments z80 calculators. It explores the technical challenges of building a Unix-like OS with preemptive multitasking, custom filesystems, and assembly/C programming environments under extreme constraints of 64KiB RAM and limited NOR Flash storage, all written in 50,000 lines of handwritten z80 assembly.
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