The 1 Wire Functions are:

unsigned char w1_init(void)


this function initializes the 1 Wire devices on the bus.

It returns 1 if there were devices present or 0 if not.

unsigned char w1_read(void)

this function reads a byte from the 1 Wire bus.

unsigned char w1_write(unsigned char data)

this function writes the byte data to the 1 Wire bus.

It returns 1 if the write process completed normally or 0 if not.

unsigned char w1_search(unsigned char cmd,void *p)

this function returns the number of devices connected to the 1 Wire bus.
If no devices were detected then it returns 0.

/*****************************************************
This program was produced by the
CodeWizardAVR V1.24.4 Standard
Automatic Program Generator
© Copyright 1998-2004 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
e-mail:office@hpinfotech.com

Project :
Version :
Date    : 07.05.2002
Author  : ps1x                            
Company : sas                            
Comments:


Chip type           : ATtiny26L
Clock frequency     : 4,000000 MHz
Memory model        : Tiny
External SRAM size  : 0
Data Stack size     : 32
*****************************************************/

#include <tiny26.h>

// 1 Wire Bus functions
#asm
   .equ __w1_port=0x18;PORTB
   .equ __w1_bit=6
#endasm
#include <1wire.h>
#include <delay.h>
eeprom char *temp;
// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void)
{
// Place your code here

}

// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
// Place your code here

}

// Declare your global variables here

void main(void)
{
unsigned char devices,rom[9];


// Declare your local variables here

// Input/Output Ports initialization
// Port A initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTA=0xFF;
DDRA=0xFF;

// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 3,906 kHz
TCCR0=0x00;
TCNT0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFh
// OC1A output: Disconnected
// OC1B output: Disconnected
PLLCSR=0x00;
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1=0x00;
OCR1A=0x00;
OCR1B=0x00;
OCR1C=0x00;

// External Interrupt(s) initialization
// INT0: On
// INT0 Mode: Falling Edge
// Interrupt on any change on pins PA3, PA6, PA7 and PB4-7: Off
// Interrupt on any change on pins PB0-3: Off
GIMSK=0x00;
MCUCR=0x00;
GIFR=0x00;

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

// Universal Serial Interface initialization
// Mode: Disabled
// Clock source: Register & Counter=no clk.
// USI Counter Overflow Interrupt: Off
USICR=0x00;

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

// 1 Wire Bus initialization
w1_init();

// Global enable interrupts
#asm("sei")

while (1)                                              
      {                          
      devices=w1_search(0x33,rom);
      if (devices){PORTA=0x00;delay_ms(1000);PORTA=0xFF;*temp=rom;}
      // Place your code here

      };
}