Hi Oliver, I've just grabbed the latest tut3.slx from the casper tutorials repository. It looks a little different from the screenshot you sent -- are you using the latest one? The quant_gain "from" tag should be driven by a yellow software register block (in the model I just checked out, it's in the top left hand corner of the design). Is it possible that your model doesn't have this block / it's been deleted? If you double click the tag, it should tell you where it's being driven from, my suspicion is that for some reason your tag has been orphaned. You can grab a new software register block from the xps_library in the simulink library browser.
(beware: double clicking the tag will mean you might have to wait a minute or two for matlab to update it's index of goto/from blocks) Cheers, Jack On 21 October 2014 14:50, Wang Jinqing <[email protected]> wrote: > Hi, > I have download the tut3.mdl. And I found than for the inports,such as > [quant_gain], the sysgen always give out such error "The input ports on this > block must be driven by other Xilinx blocks" during simulation,see the > appendix. So then I have change a xilinx constant block,it seem good. But > the [quant_gain] is an inport, that is an interface to the software, so > which xilinx is suitable? > > Best Regards. > Oliver Wang > > >

