#include <xc.h>
#define X (uint8_t *) 0x1C // Pointer for variable A
#define Y (uint8_t *) 0x1D // Pointer for variable B
#define K (uint8_t *) 0x1E // Pointer for variable B
uint8_t WREG; // Simulated Working register.
void main() {
WREG =*X; // WREG has the value of A
WREG = WREG + *Y;
*K = WREG;
*X = 0b01010101;
*Y = 0; // Update WREG with the new value of operation
WREG = *K;
WREG = *X & WREG; // Now WREG has the value of B
*Y = WREG;
*Y = ~ (*Y);
return; // End of the program
}