diff --git a/bootloader/slot.cpp b/bootloader/slot.cpp
new file mode 100644
index 000000000..ff2020214
--- /dev/null
+++ b/bootloader/slot.cpp
@@ -0,0 +1,8 @@
+#include <bootloader/slot.h>
+
+namespace Bootloader {
+
+  const struct Slot* s_slotA = reinterpret_cast<const struct Slot*>(0x90000000);
+  const struct Slot* s_slotB = reinterpret_cast<const struct Slot*>(0x90400000);
+
+}
diff --git a/bootloader/slot.h b/bootloader/slot.h
new file mode 100644
index 000000000..6190fcf8d
--- /dev/null
+++ b/bootloader/slot.h
@@ -0,0 +1,25 @@
+#ifndef BOOTLOADER_SLOT
+#define BOOTLOADER_SLOT
+
+#include <stdint.h>
+
+namespace Bootloader {
+
+struct Slot {
+  uint32_t unknown;
+  uint32_t signature_offset;
+  uint32_t magik_header;
+  char version[8];
+  char patch_level[8];
+  uint32_t magik_footer;
+  uint32_t* stack_pointer;
+  void(*main_pointer)();
+};
+
+extern const struct Slot* s_slotA;
+extern const struct Slot* s_slotB;
+
+}
+
+
+#endif
\ No newline at end of file