diff --git a/index.html b/index.html
index 92391ae4..ae7807d2 100644
--- a/index.html
+++ b/index.html
@@ -65,6 +65,7 @@ ga('send', 'pageview');
          <a tabindex="-1" href="#">Platform</a>
          <ul class="dropdown-menu">
            <li><a class="dropdown-item" href="?platform=vcs" id="item_platform_vcs">Atari VCS</a></li>
+           <li><a class="dropdown-item" href="?platform=vcs-mame" id="item_platform_vcs">Atari VCS (MAME)</a></li>
            <!--<li><a class="dropdown-item" href="?platform=apple2" id="item_platform_apple2">Apple ][</a></li>-->
            <li><a class="dropdown-item" href="?platform=vicdual" id="item_platform_vicdual">VIC Dual</a></li>
            <li><a class="dropdown-item" href="?platform=mw8080bw" id="item_platform_mw8080bw">Midway 8080</a></li>
diff --git a/src/emu.js b/src/emu.js
index b0708422..a00ed5ef 100644
--- a/src/emu.js
+++ b/src/emu.js
@@ -998,7 +998,8 @@ var BaseMAMEPlatform = function() {
           FS.writeFile('/roms/' + opts.biosfile, opts.biosdata, {encoding:'binary'});
         }
         FS.mkdir('/emulator');
-        if (romfn) FS.writeFile(romfn, new Uint8Array(romdata), {encoding:'binary'});
+        if (romfn)
+          FS.writeFile(romfn, romdata, {encoding:'binary'});
         //FS.writeFile('/debug.ini', 'debugger none\n', {encoding:'utf8'});
         if (opts.preInit) {
           opts.preInit(self);
@@ -1068,7 +1069,7 @@ var BaseMAMEPlatform = function() {
 
   this.loadROMFile = function(data) {
     romdata = data;
-    if (loaded) {
+    if (romfn) {
       FS.writeFile(romfn, data, {encoding:'binary'});
     }
   }
@@ -1076,11 +1077,11 @@ var BaseMAMEPlatform = function() {
   this.loadRegion = function(region, data) {
     if (loaded) {
       //self.luacall('cart=manager:machine().images["cart"]\nprint(cart:filename())\ncart:load("' + romfn + '")\n');
-      var s = 'mem = manager:machine():memory().regions["' + region + '"]\n';
-      //s += 'print(mem.size)\n';
+      var s = 'rgn = manager:machine():memory().regions["' + region + '"]\n';
+      //s += 'print(rgn.size)\n';
       for (var i=0; i<data.length; i+=4) {
         var v = data[i] + (data[i+1]<<8) + (data[i+2]<<16) + (data[i+3]<<24);
-        s += 'mem:write_u32(' + i + ',' + v + ')\n'; // TODO: endian?
+        s += 'rgn:write_u32(' + i + ',' + v + ')\n'; // TODO: endian?
       }
       self.luacall(s);
       self.reset();
diff --git a/src/platform/nes.js b/src/platform/nes.js
index d86dd36d..9b825a29 100644
--- a/src/platform/nes.js
+++ b/src/platform/nes.js
@@ -64,7 +64,7 @@ var NESMAMEPlatform = function(mainElement, lzgRom, romSize) {
       height:240*2,
       romfn:'/emulator/cart.nes',
       romsize:romSize,
-      romdata:new lzgmini().decode(lzgRom).slice(0, romSize),
+      romdata:new Uint8Array(new lzgmini().decode(lzgRom).slice(0, romSize)),
       preInit:function(_self) {
       },
     });
diff --git a/src/worker/workermain.js b/src/worker/workermain.js
index 8503c3ba..0859a8c4 100644
--- a/src/worker/workermain.js
+++ b/src/worker/workermain.js
@@ -596,7 +596,9 @@ function assemblelinkCA65(code, platform) {
     FS.writeFile("main.o", objout, {encoding:'binary'});
     var libargs = params.libargs;
     starttime();
-    LD65.callMain(['--cfg-path', '/share/cfg', '--lib-path', '/share/lib',
+    LD65.callMain(['--cfg-path', '/share/cfg',
+      '--lib-path', '/share/lib',
+      '--lib-path', '/share/target/apple2/drv',
       '-C', params.cfgfile,
       //'--dbgfile', 'main.dbg',
       '-o', 'main', '-m', 'main.map', 'main.o'].concat(libargs));
@@ -610,7 +612,6 @@ function assemblelinkCA65(code, platform) {
     } catch (e) {
       return {errors:errors};
     }
-    //console.log(mapout);
     var listing = parseCA65Listing(lstout, mapout);
     //console.log(lstout);
     //console.log(mapout);
@@ -620,7 +621,7 @@ function assemblelinkCA65(code, platform) {
       lines:listing.lines,
       srclines:srclines,
       errors:listing.errors,
-      intermediate:{listing:lstout, map:mapout},
+      intermediate:{listing:lstout+"\n"+mapout, map:mapout}, // TODO
     };
   }
 }