diff options
| -rw-r--r-- | fpga_interchange/fpga_interchange.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fpga_interchange/fpga_interchange.cpp b/fpga_interchange/fpga_interchange.cpp index 89f1f958..92d409f9 100644 --- a/fpga_interchange/fpga_interchange.cpp +++ b/fpga_interchange/fpga_interchange.cpp @@ -313,6 +313,11 @@ static void emit_net( // FIXME: Consider making sure that wire_data.bel_pins[0] is always the // source BEL pin in the BBA generator. static BelPin find_source(const Context *ctx, WireId source_wire) { + if (source_wire.tile == -1) { + // Nodal wire, probably a constant, cannot have an associated bel pin + return BelPin(); + } + const TileTypeInfoPOD & tile_type = loc_info(ctx->chip_info, source_wire); const TileWireInfoPOD & wire_data = tile_type.wire_data[source_wire.index]; |