diff --git a/src/audio.ts b/src/audio.ts
index 9d8f57b8..8a77fdd3 100644
--- a/src/audio.ts
+++ b/src/audio.ts
@@ -63,6 +63,16 @@ export class SN76489_Audio {
 // https://user.xmission.com/~trevin/atari/pokey_regs.html
 // http://krap.pl/mirrorz/atari/homepage.ntlworld.com/kryten_droid/Atari/800XL/atari_hw/pokey.htm
 
+export function newPOKEYAudio(count:number) {
+  var audio = new MasterAudio();
+  for (var i=1; i<=count; i++) {
+    var pokey = new POKEYDeviceChannel();
+    audio['pokey'+i] = pokey; // TODO: cheezy
+    audio.master.addChannel(pokey);
+  }
+  return audio;
+}
+
 export var POKEYDeviceChannel = function() {
 
   /* definitions for AUDCx (D201, D203, D205, D207) */
diff --git a/src/platform/atari8.ts b/src/platform/atari8.ts
index edde6b4a..b301cc0a 100644
--- a/src/platform/atari8.ts
+++ b/src/platform/atari8.ts
@@ -3,7 +3,7 @@
 import { Platform, Base6502Platform, BaseMAMEPlatform, getOpcodeMetadata_6502, getToolForFilename_6502 } from "../baseplatform";
 import { PLATFORMS, RAM, newAddressDecoder, padBytes, noise, setKeyboardFromMap, AnimationTimer, RasterVideo, Keys, makeKeycodeMap, dumpRAM, getMousePos } from "../emu";
 import { hex, lzgmini, stringToByteArray, lpad, rpad, rgb2bgr } from "../util";
-import { MasterAudio, POKEYDeviceChannel } from "../audio";
+import { MasterAudio, POKEYDeviceChannel, newPOKEYAudio } from "../audio";
 
 declare var jt; // for 6502
 
@@ -17,14 +17,6 @@ const ATARI8_KEYCODE_MAP = makeKeycodeMap([
   [Keys.VK_ENTER, 0, 0],
 ]);
 
-function newPOKEYAudio() {
-  var pokey1 = new POKEYDeviceChannel();
-  var audio = new MasterAudio();
-  audio['pokey1'] = pokey1; // TODO: cheezy
-  audio.master.addChannel(pokey1);
-  return audio;
-}
-
 // ANTIC
 
 // https://www.atarimax.com/jindroush.atari.org/atanttim.html
@@ -477,7 +469,7 @@ const _Atari8Platform = function(mainElement) {
     gtia = new GTIA(antic);
     // create video/audio
     video = new RasterVideo(mainElement, 352, 192);
-    audio = newPOKEYAudio();
+    audio = newPOKEYAudio(1);
     video.create();
     setKeyboardFromMap(video, inputs, ATARI8_KEYCODE_MAP, (o,key,code,flags) => {
       // TODO
diff --git a/src/platform/vector.ts b/src/platform/vector.ts
index 42f3889b..006371cd 100644
--- a/src/platform/vector.ts
+++ b/src/platform/vector.ts
@@ -3,7 +3,7 @@
 import { Platform, BaseZ80Platform, Base6502Platform  } from "../baseplatform";
 import { PLATFORMS, RAM, newAddressDecoder, padBytes, noise, setKeyboardFromMap, AnimationTimer, VectorVideo, Keys, makeKeycodeMap } from "../emu";
 import { hex } from "../util";
-import { MasterAudio, POKEYDeviceChannel } from "../audio";
+import { MasterAudio, POKEYDeviceChannel, newPOKEYAudio } from "../audio";
 
 // http://www.computerarcheology.com/Arcade/Asteroids/DVG.html
 // http://arcarc.xmission.com/Tech/neilw_xy.txt
@@ -41,17 +41,6 @@ var GRAVITAR_KEYCODE_MAP = makeKeycodeMap([
   [Keys.VK_LEFT, 1, -0x8],
 ]);
 
-function newPOKEYAudio() {
-  var pokey1 = new POKEYDeviceChannel();
-  var pokey2 = new POKEYDeviceChannel();
-  var audio = new MasterAudio();
-  audio['pokey1'] = pokey1; // TODO: cheezy
-  audio['pokey2'] = pokey2;
-  audio.master.addChannel(pokey1);
-  audio.master.addChannel(pokey2);
-  return audio;
-}
-
 var AtariVectorPlatform = function(mainElement) {
   var XTAL = 12096000;
   var cpuFrequency = XTAL/8;
@@ -103,7 +92,7 @@ var AtariVectorPlatform = function(mainElement) {
     // create video/audio
     video = new VectorVideo(mainElement,1024,1024);
     dvg = new DVGBWStateMachine(bus, video, 0x4000);
-    audio = newPOKEYAudio();
+    audio = newPOKEYAudio(2);
     video.create();
     timer = new AnimationTimer(60, this.nextFrame.bind(this));
     setKeyboardFromMap(video, switches, ASTEROIDS_KEYCODE_MAP);
@@ -259,7 +248,7 @@ var AtariColorVectorPlatform = function(mainElement) {
     // create video/audio
     video = new VectorVideo(mainElement,1024,1024);
     dvg = new DVGColorStateMachine(bus, video, 0x2000);
-    audio = newPOKEYAudio();
+    audio = newPOKEYAudio(2);
     video.create();
     timer = new AnimationTimer(60, this.nextFrame.bind(this));
     setKeyboardFromMap(video, switches, GRAVITAR_KEYCODE_MAP);
@@ -404,7 +393,7 @@ var Z80ColorVectorPlatform = function(mainElement, proto) {
     // create video/audio
     video = new VectorVideo(mainElement,1024,1024);
     dvg = new DVGColorStateMachine(bus, video, 0xa000);
-    audio = newPOKEYAudio();
+    audio = newPOKEYAudio(2);
     video.create();
     timer = new AnimationTimer(60, this.nextFrame.bind(this));
     setKeyboardFromMap(video, switches, GRAVITAR_KEYCODE_MAP);
diff --git a/src/ui.ts b/src/ui.ts
index 866f62a3..6c04810d 100644
--- a/src/ui.ts
+++ b/src/ui.ts
@@ -976,8 +976,10 @@ function loadBIOSFromProject() {
   if (platform.loadBIOS) {
     var biospath = platform_id + '.rom';
     store.getItem(biospath).then( (biosdata) => {
-      console.log('loading BIOS')
-      platform.loadBIOS('BIOS', biosdata);
+      if (biosdata instanceof Uint8Array) {
+        console.log('loading BIOS')
+        platform.loadBIOS('BIOS', biosdata);
+      }
     });
   }
 }