[ARM] I2C -lpc2148 isr problem

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void I2C_Initi(void);
__irq void I2C_ISR(void);
void ISR_8(void);
void ISR_18(void);
void ISR_10(void);
void ISR_28(void);
 
 
int i,Temp,f;
 
 
 
int main()
{
PINSEL0&=0xFFFFFF0F;
PINSEL0|=0x00000050;// using i2c0
I2C_Initi();
I2C0CONSET|=0x20;/* Send start bit */
 
while(1)
{
IOCLR0=0x40;
IOSET0=0x40; //post indicators
 
}
}
 
void I2C_Initi(void)
{
    
    
I2C0CONCLR=0X6C;   
I2C0CONSET=0X40;   
 
I2C0SCLH= 0x01;
I2C0SCLL= 0x90;
 
VICVectCntl0 = 0x20 | 9; 
VICIntEnable |= (1<<9);
VICVectAddr0 = (unsigned long)I2C_ISR; 
 
}
 
__irq void I2C_ISR()
{
      
  Temp=I2C0STAT;                    
switch(Temp)
{
case 0x08:
ISR_8();
break;
case 0x18:
ISR_18();
break;  
case 0x28:
ISR_28();
break;
}
 
VICVectAddr = 0xff;
 
}
  
void ISR_8(void)
{
    
I2C0DAT=0x60;              //slave address//
I2C0CONSET=0x04;
I2C0CONCLR=0x08;      
}   
 
void ISR_18(void)
{ 
        I2C0DAT=0x32 ; // sample data
    I2C0CONSET=0X04;    
      I2C0CONCLR=0x08;
}
 
 
void ISR_28(void)
{
    I2C0DAT=0x24 ;   // next data
    I2C0CONSET=0X04;    
    I2C0CONCLR=0x08;
    
}