Writing in serial port

Hi! I have this in my code for to write in serial port: while(!TXRX_is_TI_active()); SBUF=b; TXRX_clearTI(); but for to work,i need initialize TI flag . Is OK or is better to change it...
write to serial port

I have a keil uvision3. I run Hello example program in uvisin3 in simulation mode. but nothing write in serial port. what is reason?
Writing in serial port

Hi! I have this in my code for to write in serial port: while(!TXRX_is_TI_active()); SBUF=b; TXRX_clearTI(); but for to work,i need initialize TI flag . Is OK or is better to change it...
write to serial port

I have a keil uvision3. I run Hello example program in uvisin3 in simulation mode. but nothing write in serial port. what is reason?
8051 Serial port

Does anyone know how to cancel the transmission just after a write to SBUF ?