1 files changed, 9 insertions, 0 deletions
diff --git a/gowin/arch.cc b/gowin/arch.cc
index b3a6a47d..5a1a56e3 100644
--- a/gowin/arch.cc
+++ b/gowin/arch.cc
@@ -739,6 +739,15 @@ Arch::Arch(ArchArgs args) : args(args)
     }
     // Dummy for empty decals
     decal_graphics[IdString()];
+
+    std::unordered_set<IdString> bel_types;
+    for (BelId bel : getBels()) {
+        bel_types.insert(getBelType(bel));
+    }
+
+    for (IdString bel_type : bel_types) {
+        cell_types.push_back(bel_type);
+    }
 }
 
 void IdString::initialize_arch(const BaseCtx *ctx)