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Altera_Forum's avatar
Altera_Forum
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17 years ago

Quartus Help For Beginner

Hi

I'm a student working on a circuit involving the epm7064 chip. I created the software a while ago, however I needed to add an additional output pin. I added it in the block diagram as well as in the pin planner. When I program the device and test the output signal I do not get anything. Am I forgetting to add the pin info in another file? Thanks in advanced

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    Check you quartus synthesis warnings regarding the new pin, to make sure it isn't getting optimized out or placed on a different pin. It could be getting optimized out do to a misconnection (ie no clock) or placed on a different pin if there's a mismatch between the name you put in the pin-planner and the name in your block diagram.

  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    thanks for the response. As far as I can tell everything you mentioned above is correct.

  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    Couple of ideas:

    What programming file are you generating ? Check that has actually been updated and that your settings haven't been modified somehow

    Did the assembler actually run ? I've seen cases where it didn't after changes like this.

    Check the project.pin file generated by the fitter and look for your new pin

    Change the settings to generate a simulation output verilog file (.vo file). Then read the resulting .vo file with a text editor and see if your new pin is there and connected to what you think it is.