I am tired after 12hrs on the job please confirm if what I have written is okay atlast, I do get the result but I still need your opinion

ORG 0000H ;Origin address
LJMP MAIN ; Jump to intialisation
ORG 000BH
reti
ORG 0023H ;Serial interupt
LJMP SERIAL

ORG 30H
MAIN: MOV SP,#60H
MOV P1,#0FFH ;Make P1 input port
MOV TMOD,#21H ; Timer1 8 bit auto reload Timer0 16 bit timer mode
MOV TH1,#0FDH ;Set TH1 for 9600 bps@11.0592MHz
MOV SCON,#50H ;8 bit data mode with 1 start and stop bit and receive enable
MOV IE,#92H ;Global interrupt, serial interrupt enable,TIMER OVERFLOW ET0 INTERRUPT
MOV R0,#0FFH ;Counter
MOV TH0,#46H ;Timer 0
MOV TL0,#0FDH ;Values correspond to 50ms delay
CLR P1.0 ; LED at p1.0 switched on
SETB TR1 ; Start timer for serial transmission
SETB TR0 ; Start flash control timer
mov 40h,#'R'
mov 41h,#0DH
mov 42h,#0AH
mov r0,#40h
mov sbuf,@r0
LOOP:SJMP LOOP
;-----------------END OF MAIN------------------------
ORG 200H
SERIAL: JB TI,CLEAR
CLEAR: CLR TI
inc r0
cjne r0,#43h,next
sjmp out
next:mov sbuf,@r0
out:RETI
END