hello,

The board used 24Mhz crystal.Below is my code associate to baudrate generator:
////////////////////////////////////////////////////
void timerisr(void) interrupt 1
{
TF0 = 0; // clear overflow flag timer 0
counter++;
}
///////////////////////////////////////////////////
void inittimer(void)
{
TMOD &= ~0x0F; /* clear timer 0 mode bits */
TMOD |= 0x01; /* put timer 0 into MODE 1 */
ET0 = 1; // enable timer interrupt
TR0 = 1; // run timer 0
}
void com_baudrate1 (unsigned baudrate)
{
/*------------------------------------------------
Clear transmit interrupt and buffer.
------------------------------------------------*/
TI = 0; /* clear transmit interrupt */
TI1 = 0;
/*------------------------------------------------
Set timer 1 up as a baud rate generator.
------------------------------------------------*/
TR1 = 0; /* stop timer 1 */
ET1 = 0; /* disable timer 1 interrupt */
PCON |= 0x80; /* 0x80=SMOD: set serial 1
baudrate doubler */
EICON |= 0x80; /* 0x80=SMOD: set serial 2
baudrate doubler*/
TMOD &= ~0xF0; /* clear timer 1 mode bits */
TMOD |= 0x20; /* put timer 1 into MODE 1 */
T1M = 1;
TH1 = 0xF3; //i used auto reload value
EA = 1;
TR1 = 1; /* start timer 1 */
}
void initcomm1(void)
{
/*------------------------------------------------
Setup serial port registers.
------------------------------------------------*/
SM0 = 0; SM1 = 1; /* serial port MODE 1 */
SM2 = 0;
REN = 1; /* enable serial receiver */
RI = 0; /* clear receiver interrupt */
TI = 0; /* clear transmit interrupt */
ES0 = 1; /* enable serial interrupts */
PS0 = 1; /* set serial interrupts to low
priority */
}
void initcomm2(void)
{
/*------------------------------------------------
Setup serial port registers.
------------------------------------------------*/
SM01 = 0; SM11 = 1 ; /* serial port MODE 1 */
SM21 = 0;
REN1 = 1; /* enable serial receiver */
RI1 = 0; /* clear receiver interrupt */
TI1 = 0; /* clear transmit interrupt */
ES1 = 1; /* enable serial interrupts */
PS1 = 1; /* set serial interrupts to low
priority */
}
//////////////////////////////////////////////////////
I used auto reload value to generate 9600 baudrate(TH1 = 0xF3).So,give your opinion what is the problem actually?