diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0a97a015..7729c810 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -397,6 +397,7 @@ list(APPEND SOURCE_FILES
         displayapp/screens/Alarm.cpp
         displayapp/screens/Styles.cpp
         displayapp/screens/WeatherSymbols.cpp
+        displayapp/screens/ASM.cpp
         displayapp/Colors.cpp
         displayapp/widgets/Counter.cpp
         displayapp/widgets/PageIndicator.cpp
diff --git a/src/components/fs/FS.cpp b/src/components/fs/FS.cpp
index 95b40824..6064a5fa 100644
--- a/src/components/fs/FS.cpp
+++ b/src/components/fs/FS.cpp
@@ -70,7 +70,11 @@ int FS::FileWrite(lfs_file_t* file_p, const uint8_t* buff, uint32_t size) {
 }
 
 int FS::FileSeek(lfs_file_t* file_p, uint32_t pos) {
-  return lfs_file_seek(&lfs, file_p, pos, LFS_SEEK_SET);
+  return FileSeek(file_p, pos, LFS_SEEK_SET);
+}
+
+int FS::FileSeek(lfs_file_t* file_p, uint32_t pos, int whence) {
+  return lfs_file_seek(&lfs, file_p, pos, whence);
 }
 
 int FS::FileDelete(const char* fileName) {
diff --git a/src/components/fs/FS.h b/src/components/fs/FS.h
index aba30509..9daa1d39 100644
--- a/src/components/fs/FS.h
+++ b/src/components/fs/FS.h
@@ -17,6 +17,7 @@ namespace Pinetime {
       int FileRead(lfs_file_t* file_p, uint8_t* buff, uint32_t size);
       int FileWrite(lfs_file_t* file_p, const uint8_t* buff, uint32_t size);
       int FileSeek(lfs_file_t* file_p, uint32_t pos);
+      int FileSeek(lfs_file_t* file_p, uint32_t pos, int whence);
 
       int FileDelete(const char* fileName);
 
diff --git a/src/displayapp/UserApps.h b/src/displayapp/UserApps.h
index 67bbfa7d..d88d4842 100644
--- a/src/displayapp/UserApps.h
+++ b/src/displayapp/UserApps.h
@@ -2,6 +2,7 @@
 #include "displayapp/apps/Apps.h"
 #include "Controllers.h"
 
+#include "displayapp/screens/ASM.h"
 #include "displayapp/screens/Alarm.h"
 #include "displayapp/screens/Dice.h"
 #include "displayapp/screens/Timer.h"
diff --git a/src/displayapp/apps/Apps.h.in b/src/displayapp/apps/Apps.h.in
index 2104a267..fd4bd70a 100644
--- a/src/displayapp/apps/Apps.h.in
+++ b/src/displayapp/apps/Apps.h.in
@@ -42,7 +42,8 @@ namespace Pinetime {
       SettingChimes,
       SettingShakeThreshold,
       SettingBluetooth,
-      Error
+      Error,
+      ASM
     };
 
     enum class WatchFace : uint8_t {
diff --git a/src/displayapp/apps/CMakeLists.txt b/src/displayapp/apps/CMakeLists.txt
index d7858760..824671c5 100644
--- a/src/displayapp/apps/CMakeLists.txt
+++ b/src/displayapp/apps/CMakeLists.txt
@@ -2,6 +2,7 @@ if(DEFINED ENABLE_USERAPPS)
     set(USERAPP_TYPES ${ENABLE_USERAPPS} CACHE STRING "List of user apps to build into the firmware")
 else ()
     set(DEFAULT_USER_APP_TYPES "Apps::StopWatch")
+    set(DEFAULT_USER_APP_TYPES "${DEFAULT_USER_APP_TYPES}, Apps::ASM")
     set(DEFAULT_USER_APP_TYPES "${DEFAULT_USER_APP_TYPES}, Apps::Alarm")
     set(DEFAULT_USER_APP_TYPES "${DEFAULT_USER_APP_TYPES}, Apps::Timer")
     set(DEFAULT_USER_APP_TYPES "${DEFAULT_USER_APP_TYPES}, Apps::Steps")
diff --git a/src/displayapp/screens/ASM.cpp b/src/displayapp/screens/ASM.cpp
new file mode 100644
index 00000000..5c5a1302
--- /dev/null
+++ b/src/displayapp/screens/ASM.cpp
@@ -0,0 +1,564 @@
+#include "ASM.h"
+
+#include <libraries/log/nrf_log.h>
+#include <assert.h>
+#include <cstdio>
+
+using namespace Pinetime::Applications::Screens;
+
+constexpr lv_font_t* fonts[] = {
+  &fontawesome_weathericons,
+  &jetbrains_mono_42,
+  &jetbrains_mono_76,
+  &jetbrains_mono_bold_20,
+  &jetbrains_mono_extrabold_compressed,
+  &lv_font_sys_48,
+  &open_sans_light,
+};
+constexpr int num_fonts = sizeof(fonts) / sizeof(fonts[0]);
+
+constexpr uint32_t handler_return_pc_mark = 1 << 31;
+
+struct CallbackInfo {
+  ASM* instance;
+  uint32_t callback_pc;
+};
+
+static void event_handler(lv_obj_t* obj, lv_event_t event) {
+  CallbackInfo* cbInfo = static_cast<CallbackInfo*>(lv_obj_get_user_data(obj));
+  cbInfo->instance->OnObjectEvent(obj, event);
+}
+
+ASM::ASM(Controllers::DateTime& dateTimeController,
+         const Controllers::Battery& batteryController,
+         const Controllers::Ble& bleController,
+         Controllers::FS& fsController)
+  : dateTimeController(dateTimeController), batteryController(batteryController), bleController(bleController), fs(fsController) {
+
+  int result = fsController.FileOpen(&file, "program.bin", LFS_O_RDONLY);
+  asm_assert(result >= 0);
+
+  result = fsController.FileSeek(&file, 0, LFS_SEEK_END);
+  asm_assert(result >= 0);
+  program_size = result;
+  fsController.FileSeek(&file, 0, LFS_SEEK_SET);
+
+  populate_cache(0);
+
+  Refresh();
+}
+
+ASM::~ASM() {
+  if (taskRefresh != nullptr) {
+    lv_task_del(taskRefresh);
+  }
+  if (statusIcons) {
+    lv_obj_del(statusIcons->GetObject());
+  }
+
+  fs.FileClose(&file);
+
+  // We don't need to clean the screen since all objects are deleted when their shared_ptr is dropped
+  // lv_obj_clean(lv_scr_act());
+}
+
+void ASM::populate_cache(size_t pos) {
+  int result = fs.FileSeek(&file, pos);
+  asm_assert(result >= 0);
+
+  result = fs.FileRead(&file, cache, cache_size);
+  asm_assert(result >= 0);
+
+  cache_start = pos;
+}
+
+void ASM::run() {
+  bool stop = false;
+
+  while (!stop && pc < program_size) {
+    OpcodeShort opcode = static_cast<OpcodeShort>(read_byte(pc));
+    if (static_cast<uint8_t>(opcode) & (1 << 7)) {
+      // Long opcode
+      OpcodeLong opcode = static_cast<OpcodeLong>(read_u16(pc));
+
+      pc += 2;
+
+      switch (opcode) {
+        default:
+          NRF_LOG_ERROR("Unknown opcode: 0x%04X", opcode);
+          break;
+      }
+    } else {
+      pc++;
+
+      switch (opcode) {
+        case OpcodeShort::WaitRefresh:
+          stop = true;
+          break;
+
+        case OpcodeShort::Push0:
+          push(std::make_shared<ValueInteger>(0));
+          break;
+
+        case OpcodeShort::PushU8:
+          push(std::make_shared<ValueInteger>(read_byte(pc)));
+          pc++;
+          break;
+
+        case OpcodeShort::PushU16:
+          push(std::make_shared<ValueInteger>(read_u16(pc)));
+          pc += 2;
+          break;
+
+        case OpcodeShort::PushU24:
+          push(std::make_shared<ValueInteger>(read_u24(pc)));
+          pc += 3;
+          break;
+
+        case OpcodeShort::PushU32:
+          push(std::make_shared<ValueInteger>(read_u32(pc)));
+          pc += 4;
+          break;
+
+        case OpcodeShort::PushEmptyString:
+          push(std::make_shared<ValueString>(new char[1] {0}, 1));
+          break;
+
+        case OpcodeShort::Duplicate:
+          push(stack[stack_pointer - 1]);
+          break;
+
+        case OpcodeShort::Pop:
+          pop();
+          break;
+
+        case OpcodeShort::LoadString: {
+          uint32_t ptr = pop_uint32();
+
+          int length = read_byte(ptr);
+          char* text = new char[length + 1];
+          text[length] = '\0';
+
+          for (int i = 0; i < length; i++) {
+            text[i] = read_byte(ptr + 1 + i);
+          }
+
+          push(std::make_shared<ValueString>(text, length + 1));
+          break;
+        }
+
+        case OpcodeShort::StoreLocal:
+          locals[read_byte(pc++)] = pop();
+          break;
+
+        case OpcodeShort::LoadLocal:
+          push(locals[read_byte(pc++)]);
+          break;
+
+        case OpcodeShort::Branch: {
+          if (doBranch(pop_uint32()))
+            stop = true;
+          break;
+        }
+
+        case OpcodeShort::BranchIfTrue: {
+          uint32_t to = pop_uint32();
+          auto cond = pop();
+
+          if (cond->isTruthy() && doBranch(to))
+            stop = true;
+          break;
+        }
+
+        case OpcodeShort::Call: {
+          uint32_t next = pc;
+          pc = pop_uint32();
+          push(std::make_shared<ValueInteger>(next));
+          break;
+        }
+
+        case OpcodeShort::StartPeriodicRefresh:
+          if (taskRefresh == nullptr) {
+            taskRefresh = lv_task_create(RefreshTaskCallback, LV_DISP_DEF_REFR_PERIOD, LV_TASK_PRIO_MID, this);
+          }
+          break;
+
+        case OpcodeShort::StopPeriodicRefresh:
+          if (taskRefresh != nullptr) {
+            lv_task_del(taskRefresh);
+            taskRefresh = nullptr;
+          }
+          break;
+
+        case OpcodeShort::SetLabelText: {
+          auto str = pop<ValueString>(String);
+          auto obj = pop<ValueLvglObject>(LvglObject);
+
+          lv_label_set_text(obj->obj, str->str);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetArcRange: {
+          uint32_t max = pop_uint32();
+          uint32_t min = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_arc_set_range(obj->obj, min, max);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetArcRotation: {
+          uint32_t rot = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_arc_set_rotation(obj->obj, rot);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetArcBgAngles: {
+          uint32_t end = pop_uint32();
+          uint32_t start = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_arc_set_bg_angles(obj->obj, start, end);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetArcAdjustable: {
+          auto val = pop();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_arc_set_adjustable(obj->obj, val->isTruthy());
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetArcStartAngle: {
+          uint32_t angle = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_arc_set_start_angle(obj->obj, angle);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetArcValue: {
+          uint32_t value = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_arc_set_value(obj->obj, value);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::CreateLabel:
+          push(std::make_shared<ValueLvglObject>(lv_label_create(lv_scr_act(), NULL)));
+          break;
+
+        case OpcodeShort::CreateButton:
+          push(std::make_shared<ValueLvglObject>(lv_btn_create(lv_scr_act(), NULL)));
+          break;
+
+        case OpcodeShort::CreateArc:
+          push(std::make_shared<ValueLvglObject>(lv_arc_create(lv_scr_act(), NULL)));
+          break;
+
+        case OpcodeShort::SetObjectAlign: {
+          int16_t y = pop_uint32();
+          int16_t x = pop_uint32();
+          uint8_t align = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_obj_align(obj->obj, lv_scr_act(), align, x, y);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetObjectSize: {
+          int16_t h = pop_uint32();
+          int16_t w = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          lv_obj_set_size(obj->obj, w, h);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetObjectParent: {
+          auto parent = pop<ValueLvglObject>(LvglObject);
+          auto child = pop<ValueLvglObject>(LvglObject);
+          lv_obj_set_parent(child->obj, parent->obj);
+          push(child);
+          break;
+        }
+
+        case OpcodeShort::SetStyleLocalInt:
+        case OpcodeShort::SetStyleLocalFont:
+        case OpcodeShort::SetStyleLocalColor: {
+          uint32_t value = pop_uint32();
+          uint32_t prop = pop_uint32();
+          uint32_t part = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+
+          switch (opcode) {
+            case OpcodeShort::SetStyleLocalInt:
+              _lv_obj_set_style_local_int(obj->obj, part, prop, value);
+              break;
+
+            case OpcodeShort::SetStyleLocalColor:
+              _lv_obj_set_style_local_color(obj->obj, part, prop, lv_color_hex(value));
+              break;
+
+            case OpcodeShort::SetStyleLocalFont: {
+              if (value < num_fonts) {
+                _lv_obj_set_style_local_ptr(obj->obj, part, prop, fonts[value]);
+              }
+              break;
+            }
+
+            default:
+              break;
+          }
+
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::SetEventHandler: {
+          uint32_t cb_pc = pop_uint32();
+          auto obj = pop<ValueLvglObject>(LvglObject);
+          CallbackInfo* cb = new CallbackInfo {this, cb_pc};
+
+          lv_obj_set_user_data(obj->obj, cb);
+          lv_obj_set_event_cb(obj->obj, event_handler);
+          push(obj);
+          break;
+        }
+
+        case OpcodeShort::Add:
+          push(std::make_shared<ValueInteger>(pop_uint32() + pop_uint32()));
+          break;
+
+        case OpcodeShort::Subtract: {
+          uint32_t b = pop_uint32();
+          uint32_t a = pop_uint32();
+          push(std::make_shared<ValueInteger>(a - b));
+          break;
+        }
+
+        case OpcodeShort::Multiply:
+          push(std::make_shared<ValueInteger>(pop_uint32() * pop_uint32()));
+          break;
+
+        case OpcodeShort::Divide: {
+          uint32_t b = pop_uint32();
+          uint32_t a = pop_uint32();
+          push(std::make_shared<ValueInteger>(a / b));
+          break;
+        }
+
+        case OpcodeShort::GrowString: {
+          auto len = pop_uint32();
+          auto str = pop<ValueString>(String);
+
+          size_t new_cap = len + str->capacity;
+
+          char* new_str = new char[new_cap];
+          memcpy(new_str, str->str, str->capacity);
+
+          push(std::make_shared<ValueString>(new_str, new_cap));
+          break;
+        }
+
+        case OpcodeShort::ClearString: {
+          auto str = pop<ValueString>(String);
+          if (str->capacity > 0)
+            str->str[0] = '\0';
+
+          push(str);
+          break;
+        }
+
+        case OpcodeShort::Concat: {
+          auto b = pop();
+          auto a = pop();
+
+          if (a->type() == String && b->type() == String) {
+            auto aString = static_cast<ValueString*>(a.get());
+            auto bString = static_cast<ValueString*>(b.get());
+
+            int len_a = strlen(aString->str);
+            int len_b = strlen(bString->str);
+
+            size_t new_len = len_a + len_b + 1;
+
+            if (aString->capacity >= new_len) {
+              strcat(aString->str, bString->str);
+
+              push(a);
+            } else {
+              char* s = new char[new_len + 1];
+              strcpy(s, aString->str);
+              strcat(s, bString->str);
+
+              push(std::make_shared<ValueString>(s, new_len + 1));
+            }
+          } else if (a->type() == String && b->type() == Integer) {
+            auto aString = static_cast<ValueString*>(a.get());
+            auto bInt = static_cast<ValueInteger*>(b.get());
+
+            size_t aLen = strlen(aString->str);
+            size_t need_cap = aLen + 12 + 1;
+
+            if (aString->capacity - aLen >= need_cap) {
+              snprintf(aString->str + aLen, aString->capacity - aLen, "%lu", bInt->i);
+
+              push(a);
+            } else {
+              char* s = new char[need_cap];
+              memcpy(s, aString->str, aLen);
+              snprintf(s + aLen, need_cap - aLen, "%lu", bInt->i);
+
+              push(std::make_shared<ValueString>(s, need_cap));
+            }
+          } else {
+            asm_assert(false);
+          }
+          break;
+        }
+
+        case OpcodeShort::PushCurrentDateTime: {
+          auto time = dateTimeController.CurrentDateTime();
+          std::tm tm {
+            .tm_sec = dateTimeController.Seconds(),
+            .tm_min = dateTimeController.Minutes(),
+            .tm_hour = dateTimeController.Hours(),
+            .tm_mday = dateTimeController.Day(),
+            .tm_mon = static_cast<int>(dateTimeController.Month()) - 1,
+            .tm_year = dateTimeController.Year() - 1900,
+            .tm_wday = static_cast<int>(dateTimeController.DayOfWeek()),
+            .tm_yday = dateTimeController.DayOfYear() - 1,
+          };
+
+          push(std::make_shared<ValueDateTime>(time, tm));
+          break;
+        }
+
+        case OpcodeShort::PushCurrentTicks:
+          push(std::make_shared<ValueInteger>((xTaskGetTickCount() * configTICK_RATE_HZ) / 1000));
+          break;
+
+        case OpcodeShort::FormatDateTime: {
+          auto fmt = pop<ValueString>(String);
+          auto time = pop<ValueDateTime>(DateTime);
+
+          constexpr int max_len = 16;
+          char* str = new char[max_len]; // TODO: Allow user to reuse string in stack
+
+          strftime(str, max_len, fmt->str, &time->tm);
+
+          push(std::make_shared<ValueString>(str, max_len));
+          break;
+        }
+
+        case OpcodeShort::RealignObject:
+          lv_obj_realign(pop<ValueLvglObject>(LvglObject)->obj);
+          break;
+
+        case OpcodeShort::ShowStatusIcons:
+          if (!statusIcons) {
+            statusIcons = std::make_unique<Widgets::StatusIcons>(batteryController, bleController);
+            statusIcons->Create();
+          }
+          break;
+
+        case OpcodeShort::Equals: {
+          auto b = pop();
+          auto a = pop();
+          push(std::make_shared<ValueInteger>(a.get()->compare(b.get()) == 0 ? 1 : 0));
+          break;
+        }
+
+        case OpcodeShort::Greater: {
+          auto b = pop();
+          auto a = pop();
+          push(std::make_shared<ValueInteger>(a.get()->compare(b.get()) > 0 ? 1 : 0));
+          break;
+        }
+
+        case OpcodeShort::Lesser: {
+          auto b = pop();
+          auto a = pop();
+          push(std::make_shared<ValueInteger>(a.get()->compare(b.get()) < 0 ? 1 : 0));
+          break;
+        }
+
+        case OpcodeShort::Negate:
+          push(std::make_shared<ValueInteger>(pop().get()->isTruthy() ? 0 : 1));
+          break;
+
+        case OpcodeShort::GetDateTimeHour: {
+          auto time = pop<ValueDateTime>(DateTime);
+          push(std::make_shared<ValueInteger>(time->tm.tm_hour));
+          break;
+        }
+
+        case OpcodeShort::GetDateTimeMinute: {
+          auto time = pop<ValueDateTime>(DateTime);
+          push(std::make_shared<ValueInteger>(time->tm.tm_min));
+          break;
+        }
+
+        case OpcodeShort::GetDateTimeSecond: {
+          auto time = pop<ValueDateTime>(DateTime);
+          push(std::make_shared<ValueInteger>(time->tm.tm_sec));
+          break;
+        }
+
+        default:
+          NRF_LOG_ERROR("Unknown opcode: 0x%02X", opcode);
+          break;
+      }
+    }
+  }
+}
+
+void ASM::Refresh() {
+  run();
+
+  if (statusIcons) {
+    statusIcons->Update();
+  }
+}
+
+void ASM::_asm_assert(bool condition, const char* msg) {
+  if (!condition) {
+    // TODO: Handle better
+
+    if (msg)
+      NRF_LOG_ERROR("Assertion failed: %s", msg);
+
+    for (;;) {
+    }
+  }
+}
+
+bool ASM::doBranch(uint32_t to) {
+  if ((to & handler_return_pc_mark) != 0) {
+    pc = to & ~handler_return_pc_mark;
+    return true;
+  }
+
+  pc = to;
+  return false;
+}
+
+void ASM::OnObjectEvent(lv_obj_t* obj, lv_event_t event) {
+  if (event != LV_EVENT_CLICKED)
+    return;
+
+  CallbackInfo* cb = static_cast<CallbackInfo*>(lv_obj_get_user_data(obj));
+
+  if (cb) {
+    push(std::make_shared<ValueInteger>(pc | handler_return_pc_mark));
+    pc = cb->callback_pc;
+
+    run();
+  }
+}
diff --git a/src/displayapp/screens/ASM.h b/src/displayapp/screens/ASM.h
new file mode 100644
index 00000000..ae257f29
--- /dev/null
+++ b/src/displayapp/screens/ASM.h
@@ -0,0 +1,319 @@
+#pragma once
+
+#include "displayapp/screens/Screen.h"
+#include "displayapp/apps/Apps.h"
+#include "displayapp/Controllers.h"
+#include "displayapp/widgets/StatusIcons.h"
+#include "components/datetime/DateTimeController.h"
+#include "Symbols.h"
+
+#include <cassert>
+#include <memory>
+#include <chrono>
+
+#if DEBUG
+  #define STRINGIZE_DETAIL(x)   #x
+  #define STRINGIZE(x)          STRINGIZE_DETAIL(x)
+  #define asm_assert(condition) _asm_assert(condition, __FILE__ ":" STRINGIZE(__LINE__) " " #condition)
+#else
+  #define asm_assert(condition) _asm_assert(condition, NULL)
+#endif
+
+namespace Pinetime {
+  namespace Applications {
+    namespace Screens {
+      class ASM : public Screen {
+      public:
+        ASM(Controllers::DateTime&, const Controllers::Battery&, const Controllers::Ble&, Controllers::FS&);
+        ~ASM();
+
+        void Refresh() override;
+
+        void OnObjectEvent(lv_obj_t* obj, lv_event_t event);
+
+      private:
+        static constexpr int num_slots = 16;
+        static constexpr int max_locals = 16;
+        static constexpr int stack_size = 32;
+        static constexpr int cache_size = 16;
+
+        enum DataType : uint8_t { Integer, String, LvglObject, DateTime };
+
+        // TODO: Use fancy C++ type stuff
+        struct Value {
+          virtual DataType type() = 0;
+          virtual int compare(Value* other) = 0;
+          virtual bool isTruthy() = 0;
+        };
+
+        struct ValueInteger : public Value {
+          uint32_t i;
+
+          ValueInteger(uint32_t i) : i(i) {
+          }
+
+          DataType type() override {
+            return Integer;
+          }
+
+          int compare(Value* other) override {
+            if (other->type() != Integer) {
+              return -1;
+            }
+
+            auto otherInt = static_cast<ValueInteger*>(other)->i;
+
+            if (i < otherInt) {
+              return -1;
+            } else if (i > otherInt) {
+              return 1;
+            }
+
+            return 0;
+          }
+
+          bool isTruthy() override {
+            return i != 0;
+          }
+        };
+
+        struct ValueString : public Value {
+          char* str;
+          uint16_t capacity;
+
+          ValueString(char* str, uint16_t cap) : str(str), capacity(cap) {
+          }
+
+          ~ValueString() {
+            delete[] str;
+          }
+
+          DataType type() override {
+            return String;
+          }
+
+          int compare(Value* other) override {
+            if (other->type() != String) {
+              return -1;
+            }
+
+            return strcmp(str, static_cast<ValueString*>(other)->str);
+          }
+
+          bool isTruthy() override {
+            return capacity > 0 && str[0] != '\0';
+          }
+        };
+
+        struct ValueLvglObject : public Value {
+          lv_obj_t* obj;
+
+          ValueLvglObject(lv_obj_t* obj) : obj(obj) {
+          }
+
+          ~ValueLvglObject() {
+            lv_obj_del(obj);
+          }
+
+          DataType type() override {
+            return LvglObject;
+          }
+
+          int compare(Value*) override {
+            return -1;
+          }
+
+          bool isTruthy() override {
+            return obj != nullptr;
+          }
+        };
+
+        struct ValueDateTime : public Value {
+          std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> time;
+          std::tm tm;
+
+          ValueDateTime(std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> time, std::tm tm)
+            : time(time), tm(tm) {
+          }
+
+          DataType type() override {
+            return DateTime;
+          }
+
+          int compare(Value* other) override {
+            if (other->type() != DateTime) {
+              return -1;
+            }
+
+            auto otherTime = static_cast<ValueDateTime*>(other)->time;
+
+            if (time < otherTime) {
+              return -1;
+            } else if (time > otherTime) {
+              return 1;
+            }
+
+            return 0;
+          }
+
+          bool isTruthy() override {
+            return true;
+          }
+        };
+
+        enum class OpcodeShort : uint8_t {
+          StoreLocal,
+          LoadLocal,
+          Branch,
+          BranchIfTrue,
+          Call,
+          Push0,
+          PushU8,
+          PushU16,
+          PushU24,
+          PushU32,
+          PushEmptyString,
+          PushCurrentDateTime,
+          PushCurrentTicks,
+          Duplicate,
+          Pop,
+          LoadString,
+
+          StartPeriodicRefresh,
+          StopPeriodicRefresh,
+          ShowStatusIcons,
+
+          CreateLabel,
+          CreateButton,
+          CreateArc,
+          SetLabelText,
+          SetArcRange,
+          SetArcRotation,
+          SetArcBgAngles,
+          SetArcAdjustable,
+          SetArcStartAngle,
+          SetArcValue,
+          SetObjectAlign,
+          SetObjectSize,
+          SetObjectParent,
+          SetStyleLocalInt,
+          SetStyleLocalColor,
+          SetStyleLocalOpa,
+          SetStyleLocalFont,
+          SetEventHandler,
+          RealignObject,
+          WaitRefresh,
+
+          Add,
+          Subtract,
+          Multiply,
+          Divide,
+          Equals,
+          Greater,
+          Lesser,
+          Negate,
+
+          GrowString,
+          ClearString,
+          Concat,
+          FormatDateTime,
+
+          GetDateTimeHour,
+          GetDateTimeMinute,
+          GetDateTimeSecond
+        };
+
+        enum class OpcodeLong : uint16_t {};
+
+        void populate_cache(size_t pos);
+
+        uint8_t read_byte(size_t pos) {
+          if (pos < cache_start || pos >= cache_start + cache_size) {
+            populate_cache(pos);
+          }
+
+          return cache[pos - cache_start];
+        }
+
+        uint16_t read_u16(size_t pos) {
+          return static_cast<uint16_t>(read_byte(pos + 1) << 8 | read_byte(pos));
+        }
+
+        uint32_t read_u24(size_t pos) {
+          return static_cast<uint32_t>(read_byte(pos + 2) << 16 | read_byte(pos + 1) << 8 | read_byte(pos));
+        }
+
+        uint32_t read_u32(size_t pos) {
+          return static_cast<uint32_t>(read_byte(pos + 3) << 24 | read_byte(pos + 2) << 16 | read_byte(pos + 1) << 8 | read_byte(pos));
+        }
+
+        lfs_file_t file;
+        uint8_t cache[cache_size];
+        size_t cache_start;
+        size_t program_size;
+        size_t pc = 0;
+
+        std::shared_ptr<Value> locals[max_locals] = {};
+
+        std::shared_ptr<Value> stack[stack_size] = {};
+        uint8_t stack_pointer = 0;
+
+        lv_task_t* taskRefresh = nullptr;
+
+        Controllers::DateTime& dateTimeController;
+        const Controllers::Battery& batteryController;
+        const Controllers::Ble& bleController;
+        Controllers::FS& fs;
+        std::unique_ptr<Widgets::StatusIcons> statusIcons;
+
+        void run();
+        void _asm_assert(bool condition, const char* msg);
+        bool doBranch(uint32_t to);
+
+        std::shared_ptr<Value> pop() {
+          asm_assert(stack_pointer > 0);
+
+          stack_pointer--;
+
+          auto v = stack[stack_pointer];
+          stack[stack_pointer] = nullptr;
+
+          return v;
+        }
+
+        template <typename T>
+        std::shared_ptr<T> pop(DataType wantType)
+          requires(std::is_base_of_v<Value, T>)
+        {
+          auto v = pop();
+          asm_assert(v->type() == wantType);
+
+          return std::static_pointer_cast<T>(v);
+        }
+
+        uint32_t pop_uint32() {
+          return pop<ValueInteger>(Integer)->i;
+        }
+
+        void push(std::shared_ptr<Value> v) {
+          asm_assert(stack_pointer < stack_size);
+
+          stack[stack_pointer++] = v;
+        }
+      };
+    }
+
+    template <>
+    struct AppTraits<Apps::ASM> {
+      static constexpr Apps app = Apps::ASM;
+      static constexpr const char* icon = Screens::Symbols::eye;
+
+      static Screens::Screen* Create(AppControllers& controllers) {
+        return new Screens::ASM(controllers.dateTimeController,
+                                controllers.batteryController,
+                                controllers.bleController,
+                                controllers.filesystem);
+      };
+    };
+  };
+}
\ No newline at end of file