NOR Flash Read write

hi all,

in our project We are using Cyclone IV GX FPGA.We are using a NOR Flash(PC28F00BP30EF) connected to FPGA. We need to read and write data in to the NOR flash . I had attached the design(LCD_IF.qar) what we made design is proper or not check it .our NOR flash is not detecting in Nios II Flash Programmer.Please give us the possible solutions.