Originally, this compiler had "Lite," "Standard," and "Pro" modes. Today, most users utilize the Lite mode, which is free but provides fewer optimizations than the Pro version. Transitioning to MPLAB XC8
If you are starting a new project, Microchip recommends using the . XC8 is essentially the successor to HI-TECH C; in fact, the early versions of XC8 were built directly on the HI-TECH C PRO framework.
If you are migrating a v9.83 project to XC8, enable "Strict HI-TECH C Compatibility" mode in the XC8 compiler settings to minimize errors. Conclusion