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-rw-r--r--techlibs/gowin/cells_sim.v6
1 files changed, 6 insertions, 0 deletions
diff --git a/techlibs/gowin/cells_sim.v b/techlibs/gowin/cells_sim.v
index 0fe2c8c52..cc1ac48e6 100644
--- a/techlibs/gowin/cells_sim.v
+++ b/techlibs/gowin/cells_sim.v
@@ -302,6 +302,12 @@ module OBUF(output O, input I);
assign O = I;
endmodule
+module TBUF (O, I, OEN);
+ input I, OEN;
+ output O;
+ assign O = OEN ? I : 1'bz;
+endmodule
+
module GSR (input GSRI);
wire GSRO = GSRI;
endmodule