diff --git a/packages/superdough-wasm/csaw/.gitignore b/packages/superdough-wasm/csaw/.gitignore
new file mode 100644
index 000000000..69d4d83ec
--- /dev/null
+++ b/packages/superdough-wasm/csaw/.gitignore
@@ -0,0 +1 @@
+csaw
\ No newline at end of file
diff --git a/packages/superdough-wasm/csaw/csaw.c b/packages/superdough-wasm/csaw/csaw.c
new file mode 100644
index 000000000..6cc7594fb
--- /dev/null
+++ b/packages/superdough-wasm/csaw/csaw.c
@@ -0,0 +1,7 @@
+#include <math.h>
+#include <emscripten.h>
+
+EMSCRIPTEN_KEEPALIVE
+double saw(double t, double f) {
+    return fmod((f * t * 1.0), 1.0) - 0.5 * 2.0;
+}
diff --git a/packages/superdough-wasm/csaw/csaw.wasm b/packages/superdough-wasm/csaw/csaw.wasm
new file mode 100755
index 000000000..6edaa2d1a
Binary files /dev/null and b/packages/superdough-wasm/csaw/csaw.wasm differ
diff --git a/packages/superdough-wasm/main.js b/packages/superdough-wasm/main.js
index 4b76fb418..62768819e 100644
--- a/packages/superdough-wasm/main.js
+++ b/packages/superdough-wasm/main.js
@@ -5,7 +5,8 @@ document.getElementById('play').addEventListener('click', async () => {
   await ac.audioWorklet.addModule('./worklet.js');
   const node = new AudioWorkletNode(ac, 'saw-processor');
 
-  let res = await fetch('./zigsaw/zigsaw.wasm');
+  //let res = await fetch('./zigsaw/zigsaw.wasm');
+  let res = await fetch('./csaw/csaw.wasm');
   //let res = await fetch('./rustsaw/pkg/rustsaw_bg.wasm');
   const buffer = await res.arrayBuffer();
   node.port.onmessage = (e) => {