Sorry for the inadequate information.In this reply i have attached
code which is of a D-f/f and the tb for it.
I am using the Xilinx-ISIM.
The complete code has passed the 'check syntax' process.But during
simulation the isim gives an error message which is as follows:
Simulator:606 - ISE Simulator is unable to compile this design due to
specific coding constructs used in design unit work/dff_1/ff, defined
"C:/project/Project/save proj_2/sseerr/ssseeeerrr.vhd". Xilinx is
working on reducing the number of conditions where this error occurs.
more information on this error, please consult Answer Record 24068 in
Database at http://www.xilinx.com/support.
What changes do i have to make in my code to successfully simulate it?
I have seen the answer record 24068 but the problems mentioned there
I hope that,now, the problem is clear.