Hi in the in the user proj example is defined the die area a

Question

Hi in the in the user proj example is defined the die area as ```set env DIE AREA 0 0 900 600 ``` is this the maximum size for the user proj in caravel or is only an example an can be increase

Hieu Bui · Answer

It is just an example You can change it to fit your need

Ivan Rodriguez · Answer

so witch value is the maximum that still fits in caravel

Matt Venn · Answer

check the config for the user project area

Matt Venn · Answer

that defines the max size

Ivan Rodriguez · Answer

where is that file is the user project wrapper

Matt Venn · Answer

from memory the user project wrapper includes some config from another directory called user project wrapper empty

Matt Venn · Answer

and it s in there

Hieu Bui · Answer

The maximum size is ```set env DIE AREA 0 0 2920 3520 ``` You can find it in caravel openlane user project wrapper empty fixed wrapper cfgs tcl

Ivan Rodriguez · Answer

Thanks a lot for the help grinning

Tayyeb Mahmood · Answer

set env DIE AREA 0 0 900 600 this is size of example macro

Tayyeb Mahmood · Answer

set env DIE AREA 0 0 2920 3520 this is size of user project wrapper

Tayyeb Mahmood · Answer

I recommend that you use macro sizes at least 100um less than wrapper dimensions

ALI AHMED · Answer

< Rameen Anwar>

Russell Friesenhahn · Answer

regarding this are you constraining your design size in any way Based on < Tayyeb Mahmood> comment would it be reasonable to `set env DIE AREA 0 0 2820 3420` or perhaps a little smaller for the actual user design that is within `user project wrapper`

Tayyeb Mahmood · Answer

Because user project wrapper has no std cells a 50um HALO works best to connect IO but macroplacer does not respect that at least in my work Therefore it is best to place it manually by using macro cfg