Forum Discussion

AEsqu's avatar
AEsqu
Icon for Contributor rankContributor
6 years ago

Quartus 19.3 does not recognize reset sync blocks

Quartus 19.3 does not recognize reset sync blocks (with double or 3 FF), there is a plague of removal timing violations that are not valid (there are sync blocks). Quartus 13.1 does not have that ...
KennyT_altera's avatar
KennyT_altera
Icon for Super Contributor rankSuper Contributor
6 years ago

Also, if you do not use preserve. Sometimes, it will retime it to a different level of combi logic. Just take note on this.

  • AEsqu's avatar
    AEsqu
    Icon for Contributor rankContributor
    6 years ago

    Hi KTan,

    Is it possible to preserve in the QSF instead of adding the preserve in the RTL?

    I want to minimize the RTL code change.