ymiler
Contributor
ContributorECO issue
Hi,
I try to change the LUT output value by the command " modify_lutmask "
The TCL file includes the content : modify_lutmask -to eco_sig_1_cZ~0 -mask 0x1
But I get errors when I begin the pe...
Forum Discussion
Nurina
Regular Contributor
Regular ContributorHi Yishay,
In the above snapshot, only F1 & F0 is utilized in the Resource Property Viewer. However once you want to change the LUT Mask of the F3 & F2, you will have to start utilizing it in the Resource Property Viewer. So once it is utilizing all F3, F2, F1 & F0, the Q output circuit will change and the combinational logic will depend on DATAF. Please refer to picture attached in separate comment.
As for DATAA & DATAB, I'm guessing that either the LUT Mask doesn't depend on it, or Quartus only checks for it after the DATAF error is solved. Either way you can refer to the LUT Equation and see which logic it depends on.
Nurina
