Allow Chip.global_data as backwards-compatible alias for for Chip.global_data_ecp5.
diff --git a/libtrellis/src/PyTrellis.cpp b/libtrellis/src/PyTrellis.cpp
index 8133e7e..3ea2f7d 100644
--- a/libtrellis/src/PyTrellis.cpp
+++ b/libtrellis/src/PyTrellis.cpp
@@ -181,6 +181,8 @@
.def_readwrite("tiles", &Chip::tiles)
.def_readwrite("usercode", &Chip::usercode)
.def_readwrite("metadata", &Chip::metadata)
+ // Alias for backwards compatibility.
+ .def_readwrite("global_data", &Chip::global_data_ecp5)
.def_readwrite("global_data_ecp5", &Chip::global_data_ecp5)
.def_readwrite("global_data_machxo2", &Chip::global_data_machxo2)
.def(self - self);