diff options
Diffstat (limited to 'ice40')
| -rw-r--r-- | ice40/chains.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/ice40/chains.cc b/ice40/chains.cc index b1ad1007..54e284af 100644 --- a/ice40/chains.cc +++ b/ice40/chains.cc @@ -260,7 +260,8 @@ class ChainConstrainer log_info("Placing carry chain starting at '%s'\n", chain.cells.front()->name.c_str(ctx)); // Place carry chain - chain.cells.at(0)->constr_abs_z = 0; + chain.cells.at(0)->constr_abs_z = true; + chain.cells.at(0)->constr_z = 0; for (int i = 1; i < int(chain.cells.size()); i++) { chain.cells.at(i)->constr_x = 0; chain.cells.at(i)->constr_y = (i / 8); |