diff --git a/config/SOUE01/splits.txt b/config/SOUE01/splits.txt
index be914da8..6fad7717 100644
--- a/config/SOUE01/splits.txt
+++ b/config/SOUE01/splits.txt
@@ -256,6 +256,7 @@ d/d_lang.cpp:
 d/d_main.cpp:
 	.text       start:0x80054F90 end:0x80055170 align:16
 	.sbss       start:0x805751D0 end:0x805751E0
+	.bss        start:0x80597758 end:0x80597A70
 
 d/d_pad.cpp:
 	.text       start:0x80055170 end:0x8005961C align:16
diff --git a/config/SOUE01/symbols.txt b/config/SOUE01/symbols.txt
index 19e43777..c9998e05 100644
--- a/config/SOUE01/symbols.txt
+++ b/config/SOUE01/symbols.txt
@@ -2239,9 +2239,9 @@ getCurrentLanguage__Fv = .text:0x80054F50; // type:function size:0x38
 fn_80054F90 = .text:0x80054F90; // type:function size:0x18
 fn_80054FB0 = .text:0x80054FB0; // type:function size:0x24
 fn_80054FE0 = .text:0x80054FE0; // type:function size:0x20
-dMain__Create = .text:0x80055000; // type:function size:0x28
-dMain__Execute = .text:0x80055030; // type:function size:0x14
-dMain__main01 = .text:0x80055050; // type:function size:0x28
+Create__5dMainFv = .text:0x80055000; // type:function size:0x28
+Execute__5dMainFv = .text:0x80055030; // type:function size:0x14
+main01__5dMainFPv = .text:0x80055050; // type:function size:0x28
 main = .text:0x80055080; // type:function size:0xE4 scope:global
 control_mpls_callback__4dPadFll = .text:0x80055170; // type:function size:0x38
 isDeviceTypeMpls__4dPadFUl = .text:0x800551B0; // type:function size:0x24
@@ -42180,7 +42180,7 @@ layoutResHeap__5dHeap = .sbss:0x805751C0; // type:object size:0x4 data:4byte
 fontHeap__5dHeap = .sbss:0x805751C4; // type:object size:0x4 data:4byte
 HBMHeap__5dHeap = .sbss:0x805751C8; // type:object size:0x4 data:4byte
 lbl_805751D0 = .sbss:0x805751D0; // type:object size:0x8 data:4byte
-dMain__g_InitialTime = .sbss:0x805751D8; // type:object size:0x8 data:4byte
+g_InitialTime__5dMain = .sbss:0x805751D8; // type:object size:0x8 data:4byte
 m_connected__Q24dPad4ex_c = .sbss:0x805751E0; // type:object size:0x4
 sInstance__13dPadManager_c = .sbss:0x805751E8; // type:object size:0x8 data:4byte
 LINK_ROT = .sbss:0x805751F0; // type:object size:0x2 data:2byte
diff --git a/include/d/d_main.h b/include/d/d_main.h
new file mode 100644
index 00000000..09537513
--- /dev/null
+++ b/include/d/d_main.h
@@ -0,0 +1,13 @@
+#ifndef D_MAIN_H
+#define D_MAIN_H
+
+#include "rvl/OS.h"
+
+namespace dMain {
+    void Create();
+    void Execute();
+    void *main01(void *arg);
+    OSTime g_InitialTime;
+};
+
+#endif // D_MAIN_H
diff --git a/include/d/d_sys.h b/include/d/d_sys.h
index 7557307d..2bb13c1e 100644
--- a/include/d/d_sys.h
+++ b/include/d/d_sys.h
@@ -7,14 +7,22 @@
 
 class dSys_c {
 public:
+    static void setBlack(bool);
     /* Frame rate values: 1 - 60fps, 2 - 30fps */
     static void setFrameRate(u8);
     static u8 getFrameRate();
 
     static void setClearColor(nw4r::ut::Color clr);
 
+    static void create();
+    static void execute();
+
     static EGG::Heap *ms_RootHeapMem1;
     static EGG::Heap *ms_RootHeapMem2;
 };
 
+namespace dSystem {
+void fixHeaps();
+};
+
 #endif
diff --git a/include/rvl/OS/OSThread.h b/include/rvl/OS/OSThread.h
index 871ce0a7..f315c558 100644
--- a/include/rvl/OS/OSThread.h
+++ b/include/rvl/OS/OSThread.h
@@ -12,6 +12,8 @@ extern "C" {
 
 #define OS_THREAD_STACK_MAGIC 0xDEADBABE
 
+typedef s32 OSPriority;
+
 typedef enum {
     OS_THREAD_STATE_EXITED = 0,
     OS_THREAD_STATE_READY = 1,
@@ -97,6 +99,7 @@ s32 OSSuspendThread(OSThread *thread);
 void OSSleepThread(OSThreadQueue *queue);
 void OSWakeupThread(OSThreadQueue *queue);
 BOOL OSSetThreadPriority(OSThread *thread, s32 prio);
+OSPriority OSGetThreadPriority(OSThread *thread);
 void OSClearStack(u8 val);
 void OSSleepTicks(s64 ticks);
 
diff --git a/include/toBeSorted/d_lib.h b/include/toBeSorted/d_lib.h
new file mode 100644
index 00000000..0a4787ca
--- /dev/null
+++ b/include/toBeSorted/d_lib.h
@@ -0,0 +1,6 @@
+#ifndef D_LIB_H
+#define D_LIB_H
+
+void fn_80006C20();
+
+#endif // D_LIB_H
diff --git a/include/toBeSorted/mpls.h b/include/toBeSorted/mpls.h
new file mode 100644
index 00000000..561c5bff
--- /dev/null
+++ b/include/toBeSorted/mpls.h
@@ -0,0 +1,7 @@
+#ifndef MPLS_H
+#define MPLS_H
+
+void fn_80006CE0(int, char **);
+void fn_80006D60();
+
+#endif // MPLS_H
diff --git a/src/d/d_main.cpp b/src/d/d_main.cpp
new file mode 100644
index 00000000..9ad27e41
--- /dev/null
+++ b/src/d/d_main.cpp
@@ -0,0 +1,54 @@
+#include "d/d_main.h"
+
+#include "d/d_sys.h"
+#include "rvl/OS.h"
+#include "toBeSorted/d_lib.h"
+#include "toBeSorted/mpls.h"
+
+OSThread MAIN_THREAD;
+
+#define STACK_SIZE 0xF000
+
+void dMain::Create() {
+    dSys_c::create();
+    dSys_c::setBlack(false);
+}
+
+void dMain::Execute() {
+    while (true) {
+        dSys_c::execute();
+    }
+}
+
+void *dMain::main01(void *arg) {
+    Create();
+    Execute();
+    return nullptr;
+}
+
+void main(int argc, char **argv) {
+    u8 pStackBase[STACK_SIZE] __attribute__((aligned(32)));
+    
+    fn_80006C20();
+    dMain::g_InitialTime = OSGetTime();
+    dSystem::fixHeaps();
+    fn_80006CE0(argc, argv);
+    fn_80006D60();
+
+    OSThread *curThread = OSGetCurrentThread();
+    OSPriority curPrio = OSGetThreadPriority(curThread);
+
+    OSCreateThread(
+        &MAIN_THREAD,
+        dMain::main01,
+        nullptr,
+        &pStackBase[STACK_SIZE],
+        STACK_SIZE,
+        curPrio,
+        0
+    );
+
+    OSResumeThread(&MAIN_THREAD);
+    OSSetThreadPriority(curThread, 31);
+    OSSuspendThread(curThread);
+}