diff options
| -rw-r--r-- | icetime/icetime.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/icetime/icetime.cc b/icetime/icetime.cc index 69b9d9f..dd4fdad 100644 --- a/icetime/icetime.cc +++ b/icetime/icetime.cc @@ -985,6 +985,8 @@ std::string make_seg_pre_io(int x, int y, int z) std::string make_lc40(int x, int y, int z) { + assert(0 < x && 0 < y && 0 <= z && z < 8); + auto cell = stringf("lc40_%d_%d_%d", x, y, z); if (netlist_cell_types.count(cell)) @@ -1022,7 +1024,7 @@ std::string make_lc40(int x, int y, int z) { if (z == 0) { - auto co_cell = make_lc40(x, y-1, 7); + auto co_cell = 1 < y ? make_lc40(x, y-1, 7) : std::string(); std::string n1, n2; char cinit_1 = config_bits[x][y][1][49] ? '1' : '0'; @@ -1034,6 +1036,7 @@ std::string make_lc40(int x, int y, int z) n1 = net_name(x_y_name_net.at(key)); } else { n1 = tname(); + assert(!co_cell.empty()); netlist_cell_ports[co_cell]["carryout"] = n1; extra_wires.insert(n1); } |