Hi, I use Quartus II 10.1 SP1, DSP_Builder 10.1 SP1, Matlab 2009a and Stratix IV GX Development kit.I have created the following scheme in Matlab: see image myhil_1.jpg. And all works! Then I have created the following scheme: see image myhil_2.jpg. The devboard gives out a incorrect signal. I have done all too most for other development kit Cyclone III Starter kit. And all works! What is a problem with Stratix IV GX Development kit? PS: sorry for my english)
I adding a delay block in between my Input and Output blocks. It does not work correct.I think DSP_Builder 11.0 solves my problem, but I have not license for Quartus 11.0.
11.0 should have fixed the combinatorial problem. It also fixed a case where multiple devices were on the same JTAG chain. I don't know whether that board has that problem.