Hi,
I have a 24 byte tx buffer. When i send the buffer from a 89C52 to pc in a polled manner, timer 2 works fine with the following setting:
mov SCON, #01010000b
mov RCAP2L, #0DCh mov RCAP2H, #0FFh mov T2CON, #00110100b
but if i try to use serial interrupt (to receive some chars too) then the send is hanged after the 1st char....
my send codes are (with 30h as the beginning of the tx buffer):

Send:
mov R0, #30h
Main:
clr TI
mov SBUF, @R0
Wait: jnb TI, Wait
inc R0
cjne R0,#48h, Main

However, if the baudrate was set by using timer 1 then the code will work....timer 1 setting:
mov TMOD,#20h
mov PCON,#80h
mov TH1,#250
mov TCON,#40h
mov SCON,#50h
what was wrong??
pls help, thanks!!