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-rw-r--r--tests/ice40/dpram.v3
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/ice40/dpram.v b/tests/ice40/dpram.v
index 2e69d6b3b..3ea4c1f27 100644
--- a/tests/ice40/dpram.v
+++ b/tests/ice40/dpram.v
@@ -1,3 +1,6 @@
+/*
+Example from: https://www.latticesemi.com/-/media/LatticeSemi/Documents/UserManuals/EI/iCEcube201701UserGuide.ashx?document_id=52071 [p. 72].
+*/
module top (din, write_en, waddr, wclk, raddr, rclk, dout);
parameter addr_width = 8;
parameter data_width = 8;