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-rw-r--r--ecp5/bitstream.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/ecp5/bitstream.cc b/ecp5/bitstream.cc
index 611fdb8f..3fb2c5f1 100644
--- a/ecp5/bitstream.cc
+++ b/ecp5/bitstream.cc
@@ -841,6 +841,8 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex
cc.tiles[pio_tile].add_enum(pio + ".SLEWRATE", str_or_default(ci->attrs, ctx->id("SLEWRATE"), "SLOW"));
if (ci->attrs.count(ctx->id("PULLMODE")))
cc.tiles[pio_tile].add_enum(pio + ".PULLMODE", str_or_default(ci->attrs, ctx->id("PULLMODE"), "NONE"));
+ if (ci->attrs.count(ctx->id("DIFFRESISTOR")))
+ cc.tiles[pio_tile].add_enum(pio + ".DIFFRESISTOR", str_or_default(ci->attrs, ctx->id("DIFFRESISTOR"), "OFF"));
if (ci->attrs.count(ctx->id("TERMINATION"))) {
auto vccio = get_vccio(ioType_from_str(iotype));
switch (vccio) {