Hello,
I have some difficults for setup both serial line to the 80C320.
I understand i must to set serial line 0 to timer 1 and serial line 1 to timer 0 but i do not how.
I work with a cristal of 22 mhz and i want primarli set both speed to 9600 bauds (in futur I want to modify this).
I must to work in interrupt mode for both chanel and both send and receive

here is the code for the serial line 0
/*------------------------------------------------
Setup the serial port 0 (PC interface) for 9600 baud at 22 MHz.
------------------------------------------------*/
SCON0 = 0x50; // SCON: mode 0, 8-bit UART, enable rcvr
T2CON = 0x35; // Timer 2 for send and receive, timer start
TH1 = 250; // 9600 bauds

Is that correct ? is that in interrupt mo
and for the serial line 1 I do not how to do that (both in interrupt mode)

Thank you a lot for your help

Thierry