Don't forget to setup SCON for nine bit's.

mov scon,#0D2h ; Set serial mode 3 (9 bits 9th bit parity)
; TB8 is parity bit to be xmitted
; RB8 is the received parity bit
;bit TI is set for transmit buffer empty to start
mov rcap2h,#0ffh ;Set baud timer for 2400
mov rcap2l,#064h ;for T2CON
mov t2con,#34h ;Timer 2 Baud rate generator and start timer