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, shift=0, count=0;

void TIMER0()iv 0x0004 ics ICS_AUTO{
if(INTCON.TMR0IF==1){INTCON.TMR0IF=0;
    count++;
    if(count>=8)
    {
        count=0;
        shift++;
    }
  }
}
void varDelay_us( unsigned int us){
     for (i=0; i<(us/5); i++)
     {
      delay_us(5);
     }
}

void main() { INTCON |=1<<GIE| 1<<T0IE;
OPTION_REG &=~1<<T0CS &~1<<PSA;
OPTION_REG |=0X07;
trisb=0;
portb=0;
//cmcon=7;
trisa=0x01;
    while(1){
        while(porta.b0==1){}
         varDelay_us(shift *300);
        for(i=0;i<6;i++){portb=letter_p[i]; delay_us(300);}
        portb=0; delay_us(500);
        for(i=0;i<6;i++){portb=letter_i[i] ; delay_us(300);}
        portb=0; delay_us(500);
        for(i=0;i<6;i++){portb=letter_c[i] ; delay_us(300);}
        portb=0; delay_us(500);
    }
}