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diff --git a/3d_gpu/architecture/dynamic_simd/shape.mdwn b/3d_gpu/architecture/dynamic_simd/shape.mdwn
index c2c0ea138a8a9f3846697518690ae73462ca6144..44de1e48566873102354d9dd04d867967ecb72d0 100644 (file)
--- a/3d_gpu/architecture/dynamic_simd/shape.mdwn
+++ b/3d_gpu/architecture/dynamic_simd/shape.mdwn
@@ -319,4 +319,20 @@ tricks such as:
            a = s.Signal(shape)
            b = s.Signal(shape*2)
            o = s.Signal(shape*3)
-       m.c.comb + o.eq(Cat(a, b))
+       m.d.comb + o.eq(Cat(a, b))
+
+as well as:
+
+       with SimdScope(m, elwid, vec_el_counts) as s:
+           shape = SimdShape(s, fixed_width=width)
+           a = s.Signal(shape)
+           b = s.Signal(shape*2)
+           o2 = s.Signal(a.shape + b.shape)
+
+and:
+
+       with SimdScope(m, elwid, vec_el_counts) as s:
+           shape = SimdShape(s, fixed_width=width)
+           a = s.Signal(16) # element width set to 16
+           b = s.Signal(shape*2)
+           o2 = s.Signal(a.shape + b.shape)