7 files changed, 38 insertions, 20 deletions
diff --git a/arm9/asm/OS_emulator.s b/arm9/asm/OS_emulator.s
deleted file mode 100644
index 69207a5e..00000000
--- a/arm9/asm/OS_emulator.s
+++ /dev/null
@@ -1,19 +0,0 @@
-    .include "asm/macros.inc"
-    .include "global.inc"
-
-    .text
-
-	arm_func_start OS_GetConsoleType
-OS_GetConsoleType: ; 0x020CBBC0
-	ldr r0, _020CBBD0 ; =0x82000001
-	ldr r1, _020CBBD4 ; =0x02106828
-	str r0, [r1, #0x0]
-	bx lr
-	.balign 4
-_020CBBD0: .word 0x82000001
-_020CBBD4: .word 0x02106828
-
-	arm_func_start OS_IsRunOnEmulator
-OS_IsRunOnEmulator:
-	mov r0, #0x0
-	bx lr
diff --git a/arm9/lib/include/OS_emulator.h b/arm9/lib/include/OS_emulator.h
new file mode 100644
index 00000000..54105258
--- /dev/null
+++ b/arm9/lib/include/OS_emulator.h
@@ -0,0 +1,13 @@
+//
+// Created by red031000 on 2020-05-05.
+//
+
+#ifndef POKEDIAMOND_OS_EMULATOR_H
+#define POKEDIAMOND_OS_EMULATOR_H
+
+#include "consts.h"
+
+BOOL OS_IsRunOnEmulator();
+u32 OS_GetConsoleType();
+
+#endif //POKEDIAMOND_OS_EMULATOR_H
diff --git a/arm9/lib/include/OS_init.h b/arm9/lib/include/OS_init.h
index 1ff2837c..d2497836 100644
--- a/arm9/lib/include/OS_init.h
+++ b/arm9/lib/include/OS_init.h
@@ -11,6 +11,7 @@
 #include "OS_thread.h"
 #include "OS_protectionRegion.h"
 #include "OS_entropy.h"
+#include "OS_emulator.h"
 #include "OS_arena.h"
 #include "OS_alloc.h"
 #include "OS_system.h"
diff --git a/arm9/lib/include/consts.h b/arm9/lib/include/consts.h
index e07fe323..81330924 100644
--- a/arm9/lib/include/consts.h
+++ b/arm9/lib/include/consts.h
@@ -48,6 +48,10 @@
 #define HW_C6_PR_2GB               0x3c
 #define HW_C6_PR_4GB               0x3e
 
+#define OSi_CONSOLE_NOT_DETECT     0xffffffff
+
+#define OS_CONSOLE_NITRO           0x80000000
+#define OS_CONSOLE_DEV_CARD        0x02000000
 #define OS_CONSOLE_SIZE_MASK       0x00000003
 #define OS_CONSOLE_SIZE_4MB        0x00000001
 
diff --git a/arm9/lib/src/OS_arena.c b/arm9/lib/src/OS_arena.c
index eb04e60b..ae05b49c 100644
--- a/arm9/lib/src/OS_arena.c
+++ b/arm9/lib/src/OS_arena.c
@@ -5,8 +5,8 @@
 #include "consts.h"
 #include "OS_arena.h"
 #include "OS_protectionRegion.h"
+#include "OS_emulator.h"
 
-extern u32 OS_GetConsoleType();
 extern BOOL OSi_MainExArenaEnabled;
 extern BOOL OSi_Initialized;  // TODO: located at 0x021d36f0
 void SDK_MAIN_ARENA_LO(); // TODO: technically this should be defined in the lcf
diff --git a/arm9/lib/src/OS_emulator.c b/arm9/lib/src/OS_emulator.c
new file mode 100644
index 00000000..1be0e163
--- /dev/null
+++ b/arm9/lib/src/OS_emulator.c
@@ -0,0 +1,18 @@
+//
+// Created by red031000 on 2020-05-05.
+//
+
+#include "OS_emulator.h"
+#include "function_target.h"
+
+extern u32 OSi_ConsoleTypeCache; //todo fix bss
+
+ARM_FUNC BOOL OS_IsRunOnEmulator() {
+    return FALSE;
+}
+
+ARM_FUNC u32 OS_GetConsoleType() {
+    OSi_ConsoleTypeCache = OS_CONSOLE_NITRO | OS_CONSOLE_DEV_CARD | OS_CONSOLE_SIZE_4MB;
+
+    return OSi_ConsoleTypeCache;
+}
diff --git a/arm9/undefined_syms.txt b/arm9/undefined_syms.txt
index 72e1c07e..a76e7783 100644
--- a/arm9/undefined_syms.txt
+++ b/arm9/undefined_syms.txt
@@ -16,6 +16,7 @@ Unk_02106A00 = 0x02106A00;
 Unk_02106A04 = 0x02106A04;
 
 // .bss
+OSi_ConsoleTypeCache = 0x02106828;
 gBacklightTop = 0x02106FA0;
 gBacklightTop_2 = 0x02106FA0;
 gUnknown21C48B8 = 0x021C48B8;