Не работает прошивка в МК

#include <tiny13.h>


// Declare your global variables here

void main(void)
**
// Declare your local variables here

// Crystal Oscillator division factor: 1
#pragma optsize-
CLKPR=0x80;
CLKPR=0x00;
#ifdef _OPTIMIZE_SIZE_
#pragma optsize+
#endif

// Input/Output Ports initialization
// Port B initialization
// Func5=In Func4=In Func3=In Func2=In Func1=In Func0=Out
// State5=T State4=T State3=T State2=T State1=T State0=0
PORTB=0x00;
DDRB=0x01;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0A output: Disconnected
// OC0B output: Disconnected
TCCR0A=0x00;
TCCR0B=0x00;
TCNT0=0x00;
OCR0A=0x00;
OCR0B=0x00;

// External Interrupt(s) initialization
// INT0: Off
// Interrupt on any change on pins PCINT0-5: Off
GIMSK=0x00;
MCUCR=0x00;

// Timer/Counter 0 Interrupt(s) initialization
TIMSK0=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
ACSR=0x80;
ADCSRB=0x00;

while (1)
**
// Place your code here
PORTB.0=1;

**;
**