programming P89v51RD2 using USB with FT232R

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i need a schematic circuit diagram of programming a P89v51RD2 using USB with FT232R
i think P89v51RD2 have internal boot loader.. it might be programmed directly by usb by converting usb to serial by FTR232R
please help me i have not enough money to buy a new board.. so i want to do it on my own.. please help
 
my task is simple...
i need to devlop a board wich can program P89v51RD2 by usb directly... what are the things i need?
 
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