Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Output from ROM

Hi guys.

I have problem with my design. My output RX1 from rom only shows "00000000". But actually beside "00000000", it has another value. Why it does not appear? Do you have any opinion regarding my problem. I attach my functional simulation result and my diagram. Thanks in advance.

4 Replies

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

    You'll have to show the rom contents and the addr on the waveform. Otherwise we can only guess.

    There are only 2 possible options:

    1. The addresses are wrong

    2. The rom has the wrong values
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    Hi Tricky. Thanks for your respond. Here is my mif file.

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

    that waveforms is small informative. among RX1 "00000000" values there are some. is it "7F"? take a closer look. and you have three clocks. how are they related to?