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-rw-r--r--baremetal/109stream-equal.subx3
1 files changed, 3 insertions, 0 deletions
diff --git a/baremetal/109stream-equal.subx b/baremetal/109stream-equal.subx
index 8f6cf1bf..ad0dcb7c 100644
--- a/baremetal/109stream-equal.subx
+++ b/baremetal/109stream-equal.subx
@@ -1,4 +1,7 @@
 # some primitives for checking stream contents
+#
+# We need to do this in machine code because streams need to be opaque types,
+# and we don't yet support opaque types in Mu.
 
 == code
 #   instruction                     effective address                                                   register    displacement    immediate