Avoid tristate warning for blackbox ice40/cells_sim.v

diff --git a/techlibs/ice40/cells_sim.v b/techlibs/ice40/cells_sim.v
index afa8a516bba3e28664afdf12851081043cc0f8cb..c06f5e14352f43ef9d42b9e378d24cb35ff86c53 100644 (file)
--- a/techlibs/ice40/cells_sim.v
+++ b/techlibs/ice40/cells_sim.v
@@ -18,6 +18,7 @@ module SB_IO (
        parameter [0:0] NEG_TRIGGER = 1'b0;
        parameter IO_STANDARD = "SB_LVCMOS";
 
+`ifndef BLACKBOX
        reg dout, din_0, din_1;
        reg din_q_0, din_q_1;
        reg dout_q_0, dout_q_1;
@@ -57,6 +58,7 @@ module SB_IO (
                if (PIN_TYPE[5:4] == 2'b10) assign PACKAGE_PIN = outena_q ? dout : 1'bz;
                if (PIN_TYPE[5:4] == 2'b11) assign PACKAGE_PIN = OUTPUT_ENABLE ? dout : 1'bz;
        endgenerate
+`endif
 endmodule
 
 module SB_GB_IO (