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Which are you planning to run this compiler on?

As the compiler is discontinued, new devices released after September 2011 are not supported. If a device is from that era or earlier, it should be supported. For newer devices, migrating to XC8 is the only option.

Elias needed to compile the final firmware update before the morning presentation. The code was written in old-school C, optimized down to the last byte to fit into the chip's minuscule program memory. For that, he needed a very specific, legendary tool from the past: the HI-TECH C Compiler for PIC10/12/16 MCUs, specifically version 9.83.

: For a full list of bug fixes and device additions, refer to the V9.83 Readme .

This specific version was widely known for its seamless integration with the older . It simplified the transition from assembly language to C, providing built-in libraries for delays, I/O pin manipulation, and peripheral control that were more intuitive than previous tools. 3. Legacy Support

| Feature | HI-TECH C v9.83 | MPLAB XC8 (v2.50+) | |---------|----------------|----------------------| | | Excellent (OCG) | Good (but PRO mode paid) | | Free tier optimization | Full (no limits) | Limited (-O0 only) | | Latest device support | Up to 2016 devices | All new devices (2024-2025) | | IDE integration | MPLAB 8.x / MPLAB X (legacy) | MPLAB X (full) | | Windows 11 compat. | Works with tweaks | Native | | License cost | Abandonware (free to use) | Paid PRO (>$1,000) |

When reviving old codebases with v9.83, you may encounter specific build warnings or failures. "Can't find directory..." or Path Errors