diff --git a/.github/workflows/ci-workflow.yml b/.github/workflows/ci-workflow.yml
index 89f9ac21f..4e6ff53c3 100644
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -140,7 +140,7 @@ jobs:
     steps:
       - uses: numworks/setup-emscripten@v1
         with:
-          sdk: 1.40.1-fastcomp
+          sdk: 1.40.1
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
diff --git a/build/toolchain.emscripten.mak b/build/toolchain.emscripten.mak
index aa85bed50..14baf3a8f 100644
--- a/build/toolchain.emscripten.mak
+++ b/build/toolchain.emscripten.mak
@@ -26,4 +26,4 @@ EMSCRIPTEN_MODULARIZE ?= 1
 LDFLAGS += -s MODULARIZE=$(EMSCRIPTEN_MODULARIZE) -s 'EXPORT_NAME="Epsilon"' --memory-init-file 0
 
 SFLAGS += $(EMFLAGS)
-LDFLAGS += $(EMFLAGS) -Oz -s EXPORTED_FUNCTIONS='["_main", "_IonSimulatorKeyboardKeyDown", "_IonSimulatorKeyboardKeyUp", "_IonSimulatorEventsPushEvent", "_IonSoftwareVersion", "_IonPatchLevel", "_IonDisplayForceRefresh"]' -s EXTRA_EXPORTED_RUNTIME_METHODS='["UTF8ToString"]'
+LDFLAGS += $(EMFLAGS) -Oz -s EXPORTED_FUNCTIONS='["_main", "_IonSimulatorKeyboardKeyDown", "_IonSimulatorKeyboardKeyUp", "_IonSimulatorEventsPushEvent", "_IonSoftwareVersion", "_IonPatchLevel", "_IonDisplayForceRefresh"]' -s EXPORTED_RUNTIME_METHODS='["UTF8ToString"]'
diff --git a/ion/src/device/n0110/flash.ld b/ion/src/device/n0110/flash.ld
index 74e631b6e..0ae0e5910 100644
--- a/ion/src/device/n0110/flash.ld
+++ b/ion/src/device/n0110/flash.ld
@@ -244,7 +244,7 @@ SECTIONS {
     *(.rodata._ZL12KDColorWhite*)
     *(.rodata._ZL10KDColorRed*)
     *(.rodata._ZL12KDColorBlack*)
-    *(.rodata._ZN4CodeL15BackgroundColorEd*)
+    *(.rodata._ZN4CodeL15BackgroundColorE*)
     *(.rodata._ZN3Ion6Device3SWD6ConfigL4PinsE)
     *(.rodata._ZN3Ion6Device7Display6ConfigL8FSMCPinsE)
     *(.rodata._ZZN3Ion6Device7Display9initPanelEvE11calibration)
diff --git a/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenevents.c b/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenevents.c
index 64a399bde..66328af32 100644
--- a/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenevents.c
+++ b/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenevents.c
@@ -587,24 +587,13 @@ Emscripten_HandleResize(int eventType, const EmscriptenUiEvent *uiEvent, void *u
             double w = window_data->window->w;
             double h = window_data->window->h;
 
-            if(window_data->external_size) {
-                emscripten_get_element_css_size(window_data->canvas_id, &w, &h);
-            }
-
-            emscripten_set_canvas_element_size(window_data->canvas_id, w * window_data->pixel_ratio, h * window_data->pixel_ratio);
-
-            /* set_canvas_size unsets this */
-            if (!window_data->external_size && window_data->pixel_ratio != 1.0f) {
-                emscripten_set_element_css_size(window_data->canvas_id, w, h);
-            }
-
             if (force) {
                /* force the event to trigger, so pixel ratio changes can be handled */
                window_data->window->w = 0;
                window_data->window->h = 0;
             }
 
-            SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, w, h);
+            SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, 320, 240);
         }
     }
 
diff --git a/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenvideo.c b/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenvideo.c
index e20d7a985..ad9b33cbc 100644
--- a/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenvideo.c
+++ b/ion/src/simulator/external/sdl/src/video/emscripten/SDL_emscriptenvideo.c
@@ -197,38 +197,12 @@ Emscripten_CreateWindow(_THIS, SDL_Window * window)
     }
 
     wdata->canvas_id = SDL_strdup("#canvas");
+    wdata->pixel_ratio = 320 / 240;
 
-    if (window->flags & SDL_WINDOW_ALLOW_HIGHDPI) {
-        wdata->pixel_ratio = emscripten_get_device_pixel_ratio();
-    } else {
-        wdata->pixel_ratio = 1.0f;
-    }
+    window->w = 320;
+    window->h = 240;
 
-    scaled_w = SDL_floor(window->w * wdata->pixel_ratio);
-    scaled_h = SDL_floor(window->h * wdata->pixel_ratio);
-
-    /* set a fake size to check if there is any CSS sizing the canvas */
-    emscripten_set_canvas_element_size(wdata->canvas_id, 1, 1);
-    emscripten_get_element_css_size(wdata->canvas_id, &css_w, &css_h);
-
-    wdata->external_size = SDL_floor(css_w) != 1 || SDL_floor(css_h) != 1;
-
-    if ((window->flags & SDL_WINDOW_RESIZABLE) && wdata->external_size) {
-        /* external css has resized us */
-        scaled_w = css_w * wdata->pixel_ratio;
-        scaled_h = css_h * wdata->pixel_ratio;
-
-        SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, css_w, css_h);
-    }
-    emscripten_set_canvas_element_size(wdata->canvas_id, scaled_w, scaled_h);
-
-    /* if the size is not being controlled by css, we need to scale down for hidpi */
-    if (!wdata->external_size) {
-        if (wdata->pixel_ratio != 1.0f) {
-            /*scale canvas down*/
-            emscripten_set_element_css_size(wdata->canvas_id, window->w, window->h);
-        }
-    }
+    emscripten_set_canvas_element_size(wdata->canvas_id, 320, 240);  
 
 #if SDL_VIDEO_OPENGL_EGL
     if (window->flags & SDL_WINDOW_OPENGL) {
diff --git a/python/port/mpconfigport.h b/python/port/mpconfigport.h
index 5f58a24a6..38e98145a 100644
--- a/python/port/mpconfigport.h
+++ b/python/port/mpconfigport.h
@@ -5,7 +5,6 @@
 /* MicroPython configuration options
  * We're not listing the default options as defined in mpconfig.h */
 
-#if __EMSCRIPTEN__
 // Enable a PyStack where most objects are allocated instead of always using the heap
 /* This enables to allocate and free memory in a scope (thus, Python can call
  * Python) but also has the collateral effect of removing bugs regarding
@@ -15,8 +14,7 @@
  * collecting roots the transpiled C code is denied access to Javascript
  * variables that can store pointers to the Python heap. The pointed objects
  * are therefore erased prematurely. */
-#define MICROPY_ENABLE_PYSTACK (1)
-#endif
+#define MICROPY_ENABLE_PYSTACK (0)
 
 // Maximum length of a path in the filesystem
 #define MICROPY_ALLOC_PATH_MAX (32)
diff --git a/python/port/port.cpp b/python/port/port.cpp
index 76c707372..21c9645df 100644
--- a/python/port/port.cpp
+++ b/python/port/port.cpp
@@ -163,10 +163,6 @@ extern "C" {
 }
 
 void MicroPython::init(void * heapStart, void * heapEnd) {
-#if __EMSCRIPTEN__
-  static mp_obj_t pystack[1024];
-  mp_pystack_init(pystack, &pystack[MP_ARRAY_SIZE(pystack)]);
-#endif
   /* We delimit the stack part that will be used by Python. The stackTop is the
    * address of the first object that can be allocated on Python stack. This
    * boundaries are used: