Single rate FIR is not synthesizable.

Hi, my name is itay.

I have a weird problem with the DSPBA:

When I open the demo_AD9578 it compiles and run perfectly.

I actually copy the same filter to my own model and I also

make sure that all of the inputs are the same format.

input is sfix(16)_En(15),

coefs are the same,

there are 17 symmetrical coefs (exactly the same as the demo),

valid is boolean,

ch is uint8,

FPGA is stratix IV.

When I run my model it doesn't compile and gives me the next error:

"Found a non-synthesizable block in the synthesizable block"

and points to the Single_Rate_Fir.

What can be wrong? I am a bit frustrated about it, cause i am

working on it for several days.

thanks ahead,

Itay.