XC8 does not add code of functions that are not used in the program, which C18 did not do.ħ. XC8 fulfills more of the ANSI C standard which makes the code more portable.Ħ. The beginning of the block where it were used.ĥ. XC8 allows you to declare local variables just before use, while in C18 you had to declare them always at Previously we had to develop the program in assembler or find another CĬompiler that supported our microcontroller.Ĥ. XC8 is a C compiler which allows us to use the C language to develop programs for small microcontrollers XC8 can be used for all 8-bit families (PIC10, PIC12 and PIC16 and PIC18), while C18 only works for PIC18ģ. XC8 is the successor of C18 therefore late or early microchip will stop giving support to C18.Ģ. This information is based on the Microchip C18 to XC8 Migrationġ. Source code when migrating from C18 to XC8. This document aims to provide a quick reference on the changes that must be considered or performed in the Operating Modes (Extended or Non-Extended). Why I Decided to Switch From C18 to XC8?. Omar Gurrola C18 to XC8 Migration Reference
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