Add comments for examples from Lattice user guide

diff --git a/tests/ice40/dpram.v b/tests/ice40/dpram.v
index 2e69d6b3b30a785149f9c3e8f52b0ff511595888..3ea4c1f2750a58232c3507127c2b1b77b7b97951 100644 (file)
--- 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;

diff --git a/tests/ice40/macc.v b/tests/ice40/macc.v
index 115f8ce42149540c5e3fefec84617195ecfd02a6..63a3d3a74b2d46f30da320d1bf0d66bcdbb64adb 100644 (file)
--- a/tests/ice40/macc.v
+++ b/tests/ice40/macc.v
@@ -1,3 +1,6 @@
+/*
+Example from: https://www.latticesemi.com/-/media/LatticeSemi/Documents/UserManuals/EI/iCEcube201701UserGuide.ashx?document_id=52071 [p. 77].
+*/
 module top(clk,a,b,c,set);
 parameter A_WIDTH = 4;
 parameter B_WIDTH = 3;

diff --git a/tests/ice40/rom.v b/tests/ice40/rom.v
index c31ca3b2b26ea56463cd3f335e85c265a582051f..0a0f41f3754f832f8c35226428d410c01f2e5813 100644 (file)
--- a/tests/ice40/rom.v
+++ b/tests/ice40/rom.v
@@ -1,3 +1,6 @@
+/*
+Example from: https://www.latticesemi.com/-/media/LatticeSemi/Documents/UserManuals/EI/iCEcube201701UserGuide.ashx?document_id=52071 [p. 74].
+*/
 module top(data, addr);
 output [3:0] data;
 input [4:0] addr;