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-rw-r--r--README.md3
1 files changed, 2 insertions, 1 deletions
diff --git a/README.md b/README.md
index a915f4a..5cbc763 100644
--- a/README.md
+++ b/README.md
@@ -299,7 +299,8 @@ that can run one memory transfer at a time:
The core initiates a memory transfer by asserting `mem_valid`. The valid
signal stays high until the peer asserts `mem_ready`. All core outputs
-are stable over the `mem_valid` period.
+are stable over the `mem_valid` period. If the memory transfer is an
+instruction fetch, the core asserts `mem_instr`.
#### Read Transfer