From: lkcl <lkcl@web>
Date: Sat, 9 Oct 2021 14:40:49 +0000 (+0100)
Subject: (no commit message)
X-Git-Tag: opf_rfc_ls005_v1~3676
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=19fd0901f92d28f3bd199a11229ff4c1d39e3af7;p=libreriscv.git

---

diff --git a/3d_gpu/architecture/dynamic_simd/shape.mdwn b/3d_gpu/architecture/dynamic_simd/shape.mdwn
index 8be82debf..9b9f42483 100644
--- a/3d_gpu/architecture/dynamic_simd/shape.mdwn
+++ b/3d_gpu/architecture/dynamic_simd/shape.mdwn
@@ -104,16 +104,16 @@ occur on `Shape.width`.
 
 With this capability it becomes possible to use the Liskov Substitution
 Principle in dynamically compiling code that switches between scalar and
-SIMD:
+SIMD transparently:
 
     # scalar context
     scalarctx = scl = object()
     scl.XLEN = 64
-    scl.SigKls = Signal
+    scl.SigKls = Signal         # standard nmigen Signal
     # SIMD context
     simdctx = sdc = object()
     sdc = SimdShape(64, ....)
-    sdc.SigKls = SimdSignal
+    sdc.SigKls = SimdSignal     # advanced SIMD Signal
     sdc.elwidth = Signal(2)
     # select one 
     if compiletime_switch == 'SIMD':
@@ -126,4 +126,5 @@ SIMD:
     with ctx:
         x = ctx.SigKls(ctx.XLEN)
         ...
+    m.d.comb += x.eq(Const(3))