diff --git a/include/global.h b/include/global.h
index 5de8b410b5..b57cc26049 100644
--- a/include/global.h
+++ b/include/global.h
@@ -497,6 +497,7 @@ struct SaveBlock2
 extern struct SaveBlock2 *gSaveBlock2Ptr;
 
 extern u8 UpdateSpritePaletteWithTime(u8);
+extern bool8 IsAccurateGBA(void);
 
 struct SecretBaseParty
 {
diff --git a/src/main.c b/src/main.c
index 3125716e25..985b9185b7 100644
--- a/src/main.c
+++ b/src/main.c
@@ -432,3 +432,13 @@ void ClearPokemonCrySongs(void)
 {
     CpuFill16(0, gPokemonCrySongs, MAX_POKEMON_CRIES * sizeof(struct PokemonCrySong));
 }
+
+// TODO: Needs to be updated if compiling for a different processor than the GBA's
+bool8 IsAccurateGBA(void) { // tests to see whether running on either an accurate emulator in >=2020, or real hardware
+  u32 code[5] = {0xFF1EE12F, 0xE1DF00B0, 0xE12FFF1E, 0xAAAABBBB, 0xCCCCDDDD}; // ARM: _;ldrh r0, [pc];bx lr
+  u32 func = (u32) &code[0];
+  if (func & 3) // not word aligned; safer to just return false here
+    return FALSE;
+  func = (func & ~3) | 0x2; // misalign PC to test PC-relative loading
+  return ((u32 (*)(void)) func)() == code[3] >> 16;
+}