The basic CONFIG pseudo-constant declaration may be defined in a CONST section. This pseudo-constant cannot be used as an identifier and is not defined in the program.
CONFIG = <Numeric Expression>;
This constant maps directly to the __CONFIG directive of MPASM™ assembler; its declaration accepts any constant expression that returns a 16-bit value, which is generated as a single value for the assembler.
CONFIG = _INTRC_OSC_NOCLKOUT AND _WDT_OFF AND _PWRTE_OFF AND _MCLRE_OFF
AND _CP_OFF AND _BOR_OFF AND _IESO_OFF AND _FCMEN_OFF;
Will generate this code in the .asm file: