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Altera_Forum's avatar
Altera_Forum
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14 years ago

Hardware primitives giving odd behavior

I am a student just starting with Verilog and am trying to create a module to take all the numbers between 0 and 63 and then modulo them by three and five.

I am trying to do it with a pair of hardware primitives, and the modulo three works, but trying to modulo by other numbers mysteriously does not. I tried five, two, and four now and they have all given me very odd output in both the simulator and on the DE2 board I am working with.

EDIT: Removed the large output I had posted to post all the outputs and source files for the different modulos I have tried into the expanded zip file I posted below. All the different modulos I have created are just copy pastes from the Mod3 file with which I then alter the outputs.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Realized that I should just package the outputs in text files, also wanted to give the tables for the different modulos I have tried. Have done 2/3/4/5/10 now, and only 3 works.

    Things I have tried as well: using only one primitive in the top level, separate inputs for the different primitives, changing the amount of time in the test bench, and re-writing the entire truth table. I get the same wrong outputs on every time regardless of what I do.