1 files changed, 11 insertions, 0 deletions
diff --git a/nexus/arch.cc b/nexus/arch.cc
index f222a5ad..dbc12c13 100644
--- a/nexus/arch.cc
+++ b/nexus/arch.cc
@@ -619,6 +619,10 @@ ArcBounds Arch::getRouteBoundingBox(WireId src, WireId dst) const
         bb.x0 = std::max<int>(0, bb.x0 - 6);
         bb.x1 = std::min<int>(chip_info->width, bb.x1 + 6);
     }
+    if (lram_wires.count(src) || lram_wires.count(dst)) {
+        bb.y0 = std::max<int>(0, bb.y0 - 7);
+        bb.y1 = std::min<int>(chip_info->width, bb.y1 + 7);
+    }
 
     return bb;
 }
@@ -669,6 +673,13 @@ void Arch::pre_routing()
                     dsp_wires.insert(wire);
             }
         }
+        if (ci->type == id_LRAM_CORE) {
+            for (auto port : sorted_ref(ci->ports)) {
+                WireId wire = getBelPinWire(ci->bel, port.first);
+                if (wire != WireId())
+                    lram_wires.insert(wire);
+            }
+        }
     }
 }