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JHAUG1's avatar
JHAUG1
Icon for New Contributor rankNew Contributor
6 years ago

Hi, I can't get my mod20 sequential circuit to work, the output keeps showing xxxxx. I'm using Quartus ll 8.1 web edition

I have managed to get it to work on breadboard with hardware so I'm guessing my logic is correct but i'm new to Quartus and could do with a few pointers to why I cannot get any output from my circuit...
KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
6 years ago

Hi,

From the scrren shot, I can see that the clock signal does not toggle.

Can you simulate using ModelSim Starter edition (Free edition)? You may

  • Convert the BDF file to HDL file by clicking on File > Create/Update > Create HDL Design File From Current File
  • Create Test Bench template by clicking on Processing > Start > Start Test Bench Template Write
  • Find the test bench created in simulation/modelsim/*.vt or .vht, edit the test bench with the input signal
  • Simulate the design

Thanks.

Best regards,

KhaiY