GoKawiilDeveloper recalls building GPS moving-map software on a 486-SX in the 1990s
A former embedded systems contractor recounts building a real-time GPS moving-map display in the 1990s for hardware with a 25MHz 486-SX processor lacking a math co-processor, 32MB RAM, and ROM-based software. He used the Hipparchus library from Geodesy, which relied on Voronoi cells and integer math instead of costly floating-point trigonometry, achieving surprisingly high accuracy. The client later ran into financial trouble and the developer, as a contractor without IP rights, lost access to the finished prototype.