Parallel port ADSP -21364

Hi,

      I am working on ADSP-21364 & using the parallel port ,I read the example codes,wherein the eternal address was # defined now i am little confused with using the ALE ,RD & WR signals ,how do i use them in the code & if i would like to use the parallel port to interface with the FPGA how do i use these signals.Also i am not clear what does EMPP =0 do.Will this work for FPGA.

thanks