hai,

sorry for wrong input (Timer1 is used for waveform generation)

during initializaion
when mode2 is used
TMOD = 0x02; //Mode2 selection
TL1 = 0x0E3;
TH1 = 0x0E3;

void timer1_isr interrupt 3 using 2
{
P1_3 = ~P1_3; //Port 1.3 is used for wave form generation
}

when mode1 is used

TMOD = 0x01; //Mode1 selection
TL1 = 0x0E3;
TH1 = 0x0FF;

void timer1_isr interrupt 3 using 2
{
P1_3 = ~P1_3; //Port 1.3 is used for wave form generation
TL1 = 0x0E3;
TH1 = 0x0FF;
}