diff --git a/duke4.json b/duke4.json
new file mode 100644
index 0000000..fdd3afa
--- /dev/null
+++ b/duke4.json
@@ -0,0 +1,43 @@
+{
+    "target": "kasli",
+    "variant": "duke4",
+    "hw_rev": "v2.0",
+    "base": "standalone",
+    "core_addr": "192.168.1.75",
+    "peripherals": [
+        {
+            "type": "urukul",
+            "dds": "ad9910",
+            "ports": [0, 1],
+            "clk_sel": 2
+        },
+        {
+            "type": "urukul",
+            "dds": "ad9910",
+            "ports": [2, 3],
+            "clk_sel": 2
+        },
+        {
+            "type": "zotino",
+            "ports": [4]
+        },
+        {
+            "type": "sampler",
+            "ports": [5, 6]
+        },
+        {
+            "type": "dio",
+            "ports": [7],
+            "bank_direction_low": "input",
+            "bank_direction_high": "output"
+        },
+        {
+            "type": "phaser",
+            "ports": [8]
+        },
+        {
+            "type": "phaser",
+            "ports": [10]
+        }
+    ]
+}