7 files changed, 21 insertions, 0 deletions
diff --git a/demo/src/compile.ts b/demo/src/compile.ts
index fa846b1..fda2416 100644
--- a/demo/src/compile.ts
+++ b/demo/src/compile.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) Uri Shaked and contributors
+
 const url = 'https://hexi.wokwi.com';
 
 export interface HexiResult {
diff --git a/demo/src/cpu-performance.ts b/demo/src/cpu-performance.ts
index 1b1261e..88f9326 100644
--- a/demo/src/cpu-performance.ts
+++ b/demo/src/cpu-performance.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) Uri Shaked and contributors
+
 import { CPU } from 'avr8js';
 
 export class CPUPerformance {
diff --git a/demo/src/execute.ts b/demo/src/execute.ts
index 5d5c6b4..805ce9a 100644
--- a/demo/src/execute.ts
+++ b/demo/src/execute.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) Uri Shaked and contributors
+
 import {
   avrInstruction,
   AVRTimer,
diff --git a/demo/src/format-time.ts b/demo/src/format-time.ts
index a82b3b0..2afdcbf 100644
--- a/demo/src/format-time.ts
+++ b/demo/src/format-time.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) Uri Shaked and contributors
+
 function zeroPad(value: number, length: number) {
   let sval = value.toString();
   while (sval.length < length) {
diff --git a/demo/src/index.ts b/demo/src/index.ts
index a76d1fe..2d35403 100644
--- a/demo/src/index.ts
+++ b/demo/src/index.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) Uri Shaked and contributors
+
 import '@wokwi/elements';
 import { LEDElement } from '@wokwi/elements';
 import { PinState } from 'avr8js';
diff --git a/demo/src/intelhex.ts b/demo/src/intelhex.ts
index ba5d6c8..446a5c1 100644
--- a/demo/src/intelhex.ts
+++ b/demo/src/intelhex.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) Uri Shaked and contributors
+
 /**
  * Minimal Intel HEX loader
  * Part of AVR8js
diff --git a/demo/src/task-scheduler.ts b/demo/src/task-scheduler.ts
index 46413ef..d7e3c23 100644
--- a/demo/src/task-scheduler.ts
+++ b/demo/src/task-scheduler.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) Uri Shaked and contributors
+
 export type IMicroTaskCallback = () => void;
 
 export class MicroTaskScheduler {