sawg: don't use Mux for signed signals

migen#75
2018-06-06 15:50:53 +00:00 · 2018-06-06 15:50:53 +00:00 · b4c2b148d1
parent 28f31323a3
commit b4c2b148d1
1 changed files with 6 additions and 2 deletions
--- a/artiq/gateware/dsp/sawg.py
+++ b/artiq/gateware/dsp/sawg.py
@ -203,8 +203,12 @@ class Channel(Module, SatAddMixin):
            o_y = Signal.like(y)
            self.comb += [
                o_offset.eq(u.o.a0[-len(o):]),
-                o_x.eq(Mux(cfg.iq_en[0], x, 0)),
-                o_y.eq(Mux(cfg.iq_en[1], y, 0)),
+                If(cfg.iq_en[0],
+                    o_x.eq(x)
+                ),
+                If(cfg.iq_en[1],
+                    o_y.eq(y)
+                ),
            ]
            self.sync += [
                o.eq(self.sat_add((o_offset, o_x, o_y),