Forum Discussion

StefanoC's avatar
StefanoC
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

ALMs vs combinational logic gates

Hi, in the compilation report, I don't understand how the number of used combinational gates plays against ALMs. Originally I had a function that used several +/* on float64 and compiling that (...
Ash_R_Intel's avatar
Ash_R_Intel
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi,

As I understand your query, you are seeing a drastic reduction in utilization of ALMs after changing the code from function to a component.

I suspect that there is something missing in the code and that the logic is being removed. Recommend to review check all the connections to the component in the HDL. To confirm, use the Technology Map Viewer and see if really the logic got implemented or not.


Regards


  • StefanoC's avatar
    StefanoC
    Icon for Occasional Contributor rankOccasional Contributor
    3 years ago

    that was right, the actual result from the component wasn't assigned to an output pin and I believe the compiler wasn't actually placing the thing, so problem solved.