s8319
Junior Member level 2
![Junior Member level 2](/styles/images/ranks/clevel2.gif)
hi all:
Now i doing a synthesis using DC, there are always paths violated,
the paths containing some adders(ADDFHX1,ADDFHX4,ADDFX2 etc.) in smic18 lib whose delay are relatively bigger than other one.
The constrains "set_max_area 0" is added, I donot know what type of these adders are and whether they the fastest ones, should i use "set_implementation" constrain, does it affect?
thank you very much!
Now i doing a synthesis using DC, there are always paths violated,
the paths containing some adders(ADDFHX1,ADDFHX4,ADDFX2 etc.) in smic18 lib whose delay are relatively bigger than other one.
The constrains "set_max_area 0" is added, I donot know what type of these adders are and whether they the fastest ones, should i use "set_implementation" constrain, does it affect?
thank you very much!