I´m trying to comunicate my at89s8052 with the PC vía MAX232 though I had no response. Is there something wrong with the code?

By the way, is there a way to simulate the serial comunication with the 8052 simulator or with pinnacle 52? Because I´m able to simulate the recive byte, but I don´t know how to see the Tx data.

PS. the cristal is 12MHz

the code is suposed to replicate the recived byte

'TIMER EQU $07
'WMCON DATA 96h
'
' DEFSEG programa, START = $0000, ABSOLUTE, CLASS = CODE
' SEG programa
'
' ORG 0H
' JMP PPAL
' ORG 03H
' RETI
' ORG 0BH
' RETI
' ORG 13H
' RETI
' ORG 01BH
' RETI
' ORG 023H
' JMP HAND_SHAKE
' ORG 02BH
' RETI
' ORG 030H
'
'PPAL:
' CLR IE.7
' MOV SP,#060H
' SETB IE.7
' CALL INICIALIZACION
'
'COMIENZO:
' CLR C
' JMP COMIENZO
'
'INICIALIZACION:
' CALL INICIO_RS232
' RET
'
'INICIO_RS232:
' SETB IE.7
' SETB IE.4
' SETB IP.4
' MOV PCON, #080H
' MOV TH1, #0FAH
' MOV SCON, #01010000B
' MOV TMOD, #00100001B
' MOV TCON, #01000000B
' RET
'
'
'SEND:
' MOV SBUF,A
' JNB TI,$
' CLR TI
' RET
'
'HAND_SHAKE:
' CLR EA
' PUSH ACC
' PUSH PSW
' PUSH DPL
' PUSH DPH
' CLR RI
' MOV A,SBUF
' CALL SEND
'
' POP DPH
' POP DPL
' POP PSW
' POP ACC
'
' SETB EA
' RETI
' END