download ROM image

.gitmodules

@@ -13,3 +13,6 @@
 [submodule "tss"]
 	path = tss
 	url = ./tss
+[submodule "FileSaver.js"]
+	path = FileSaver.js
+	url = ./FileSaver.js

FileSaver.js

@@ -0,0 +1 @@
+Subproject commit aa9f4e0e03bd1892482ff5e24ca91d42312dbf18

index.html

@@ -186,6 +186,7 @@ canvas.pixelated {
       <li><a class="dropdown-item" href="#" id="item_new_file">New File...</a></li>
       <li><a class="dropdown-item" href="#" id="item_share_file">Share File as GitHub Gist...</a></li>
       <li><a class="dropdown-item" href="#" id="item_reset_file">Revert to Original...</a></li>
+      <li><a class="dropdown-item" href="#" id="item_download_rom">Download ROM Image...</a></li>
       <!--
       <li class="dropdown dropdown-submenu">
           <a tabindex="-1" href="#">Platform</a>
@@ -283,7 +284,9 @@ canvas.pixelated {
 <script src="local/williams/defender.js"></script>
 <script src="local/williams/robotron.js"></script>
 
+<script src="FileSaver.js/FileSaver.min.js"></script>
 <script src="octokat.js/dist/octokat.js"></script>
+
 <script src="src/emu.js"></script>
 <script src="src/util.js"></script>
 <script src="src/disasm.js"></script>

src/ui.js

@@ -241,6 +241,11 @@ function _createNewFile(e) {
   return true;
 }
 
+function getCurrentFilename() {
+  var toks = current_preset_id.split("/");
+  return toks[toks.length-1];
+}
+
 function _shareFile(e) {
   if (current_output == null) {
     alert("Please fix errors before sharing.");
@@ -249,8 +254,7 @@ function _shareFile(e) {
   var github = new Octokat();
   var files = {};
   var text = editor.getValue();
-  var toks = current_preset_id.split("/");
-  files[toks[toks.length-1]] = {"content": text};
+  files[getCurrentFilename()] = {"content": text};
   var gistdata = {
     "description": '8bitworkshop.com {"platform":"' + platform_id + '"}',
     "public": true,
@@ -275,6 +279,15 @@ function _resetPreset(e) {
   return true;
 }
 
+function _downloadROMImage(e) {
+  if (current_output == null) {
+    alert("Please fix errors before downloading ROM.");
+    return true;
+  }
+  var blob = new Blob([current_output], {type: "application/octet-stream"});
+  saveAs(blob, getCurrentFilename()+".rom");
+}
+
 function populateExamples(sel) {
   sel.append($("<option />").text("--------- Chapters ---------").attr('disabled',true));
   for (var i=0; i<PRESETS.length; i++) {
@@ -837,6 +850,7 @@ function setupDebugControls(){
   $("#item_share_file").click(_shareFile);
   $("#item_reset_file").click(_resetPreset);
   $("#item_debug_expr").click(_breakExpression);
+  $("#item_download_rom").click(_downloadROMImage);
 }
 
 function showWelcomeMessage() {