char letter_p[] = { 0xff, 0xff,0x09 , 0x09, 0x0f, 0x06} ;
char letter_i[] = { 0x00, 0x81, 0xff, 0xff, 0x81, 0x00};
char letter_c[] = { 0x1c, 0x3e, 0x41, 0x41, 0x41, 0x22};
char i = 0;
char shift = 0 , count = 0;

void TIMER0() iv 0x0004 ics ICS_AUTO {
  if(INTCON.TMR0IF==1){
     INTCON.TMR0IF = 0;
     count++;
         if(count>= 15){
         count = 0;
         shift++;
         }

  }
}

void main() {
INTCON |= 1<<GIE | 1<<T0IE ;
OPTION_REG &= ~1<<T0CS & ~1<<PSA ;
OPTION_REG |= 0X07; // PRESC=256

trisb=0;
portb=0;
//cmcon=7;
trisa=0x01;

    while(1){
          while(porta.b0==1){}
          vdelay_ms(shift * 5);
          for(i=0; i<6; i++){portb=letter_p[i]; delay_us(270);} //P
          portb=0;  delay_us(540);

          for(i=0; i<6; i++){portb=letter_i[i]; delay_us(270);} // I
          portb=0;  delay_us(540);

          for(i=0; i<6; i++){portb=letter_c[i]; delay_us(270);}// C
          portb=0;   delay_us(540);

    }
}

if(count>= 15)

vdelay_ms(shift * 5);