no path found problem

[zaidali]

hi all members ,
i am using a matrix operations in vhdl , like matrix addition , subtraction , i declare the matrices as type arrays (distributed ram ) , i am reading the elements of matrices from those arrays , make the operations on them , then i save also in a matrix (array type) , the simulation works ok , but always it tell me that ( no path found ) , but i can't use inport and out port , i just need to save the elements in a memory and doing the operations on them , so plz if you can help me in that ,thanx a lot

 

[K-J]

but always it tell me that ( no path found )

What is telling you 'no path found'?

but i can't use inport and out port , i just need to save the elements in a memory and doing the operations on them

Is the memory accessible from the outside world (i.e. the top level entity)? If not, then it will synthesize to nothing since the result of your computation has no way to effect any external I/O therefore it can be removed which is exactly the correct behavior for synthesis...presuming that a synthesis tool is the one saying 'no path found'

Kevin Jennings