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-rw-r--r--ice40/arch_place.cc7
1 files changed, 4 insertions, 3 deletions
diff --git a/ice40/arch_place.cc b/ice40/arch_place.cc
index e4a6c5d7..492ed846 100644
--- a/ice40/arch_place.cc
+++ b/ice40/arch_place.cc
@@ -22,8 +22,8 @@
NEXTPNR_NAMESPACE_BEGIN
-static const NetInfo *
-get_net_or_nullptr(const CellInfo *cell, const IdString port)
+static const NetInfo *get_net_or_nullptr(const CellInfo *cell,
+ const IdString port)
{
auto found = cell->ports.find(port);
if (found != cell->ports.end())
@@ -97,7 +97,8 @@ bool isValidBelForCell(Design *design, CellInfo *cell, BelId bel)
cells.push_back(cell);
return logicCellsCompatible(cells);
-
+ } else if (cell->type == "SB_IO") {
+ return design->chip.getBelPackagePin(bel) != "";
} else {
// TODO: IO cell clock checks
return true;