diff --git a/include/cic6105.h b/include/cic6105.h
index 78b82ca272..794ada45de 100644
--- a/include/cic6105.h
+++ b/include/cic6105.h
@@ -3,8 +3,11 @@
 
 #include "ultra64.h"
 
-extern u32 B_80008EE0;
+extern s32 B_80008EE0;
 
+void CIC6105_AddFaultClient(void);
+void CIC6105_RemoveFaultClient(void);
+void func_80001640(void);
 void func_80001720(void);
 
 #endif
diff --git a/include/variables.h b/include/variables.h
index b25f7f31d8..c7d16e3ae2 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -40,9 +40,9 @@ extern OSViContext* __osViCurr;
 extern OSViContext* __osViNext;
 extern OSViMode osViModeFpalLan1;
 extern u32 __additional_scanline;
-extern u8 gBuildTeam[];
-extern u8 gBuildDate[];
-extern u8 gBuildMakeOption[];
+extern const char gBuildTeam[];
+extern const char gBuildDate[];
+extern const char gBuildMakeOption[];
 extern OSMesgQueue gPiMgrCmdQueue;
 extern OSViMode gViConfigMode;
 extern u8 gViConfigModeType;
diff --git a/src/boot/boot_main.c b/src/boot/boot_main.c
index 2f09bbd778..e67c768755 100644
--- a/src/boot/boot_main.c
+++ b/src/boot/boot_main.c
@@ -4,6 +4,8 @@
 #include "cic6105.h"
 #endif
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128 gc-jp:128 gc-jp-ce:128 gc-jp-mq:128 gc-us:128 gc-us-mq:128"
+
 StackEntry sBootThreadInfo;
 OSThread sIdleThread;
 STACK(sIdleThreadStack, 0x400);
diff --git a/src/boot/cic6105.c b/src/boot/cic6105.c
index 6e5515b931..9cb5c3e393 100644
--- a/src/boot/cic6105.c
+++ b/src/boot/cic6105.c
@@ -1,3 +1,85 @@
+#include "global.h"
 #include "cic6105.h"
+#include "fault.h"
 
-u32 B_80008EE0;
+// TODO N64 fault.c functions
+void func_800AE1E0_unknown(s32, s32);
+void func_800AE258_unknown(const char*, ...);
+
+s32 func_80001714(void);
+
+extern u64 cic6105ucodeTextStart[];
+
+OSTask D_800067C0_unknown = {
+    4, 0, rspbootTextStart, 0x3E8, cic6105ucodeTextStart, 0x20, (u64*)gBuildTeam, 8, NULL, 0, NULL, 0, NULL, 0, NULL, 0,
+};
+
+s32 B_80008EE0;
+s32 B_80008EE4;
+FaultClient sCIC6105FaultClient;
+s32 B_80008EF8;
+s32 B_80008EFC;
+
+void func_800014D0(void) {
+    R_AUDIOMGR_DEBUG_LEVEL = AUDIOMGR_DEBUG_LEVEL_NO_RSP;
+}
+
+void func_800014E8(void) {
+    R_AUDIOMGR_DEBUG_LEVEL = AUDIOMGR_DEBUG_LEVEL_NONE;
+}
+
+void CIC6105_FaultClient(void) {
+    s32 spStatus;
+
+    spStatus = IO_READ(SP_STATUS_REG);
+    func_800AE1E0_unknown(48, 200);
+    if (spStatus & SP_STATUS_SIG7) {
+        func_800AE258_unknown("OCARINA %08x %08x", B_80008EF8, B_80008EFC);
+    } else {
+        func_800AE258_unknown("LEGEND %08x %08x", B_80008EF8, B_80008EFC);
+    }
+    func_800AE1E0_unknown(40, 184);
+    func_800AE258_unknown("ROM_F");
+    func_800AE258_unknown(" [Creator:%s]", gBuildTeam);
+    func_800AE1E0_unknown(56, 192);
+    func_800AE258_unknown("[Date:%s]", gBuildDate);
+    func_800AE1E0_unknown(96, 32);
+    func_800AE258_unknown("I LOVE YOU %08x", func_80001714());
+}
+
+void CIC6105_AddFaultClient(void) {
+    Fault_AddClient(&sCIC6105FaultClient, CIC6105_FaultClient, NULL, NULL);
+}
+
+void CIC6105_RemoveFaultClient(void) {
+    Fault_RemoveClient(&sCIC6105FaultClient);
+}
+
+void func_80001640(void) {
+    OSScTask sp38;
+    OSMesgQueue queue;
+    OSMesg msg;
+
+    osCreateMesgQueue(&queue, &msg, 1);
+    sp38.next = NULL;
+    sp38.flags = OS_SC_NEEDS_RSP;
+    sp38.msgQueue = &queue;
+    sp38.msg = (OSMesg)0;
+    sp38.framebuffer = 0;
+    sp38.list = D_800067C0_unknown;
+    osSendMesg(&gScheduler.cmdQueue, &sp38, OS_MESG_BLOCK);
+    Sched_Notify(&gScheduler);
+    osRecvMesg(&queue, NULL, 1);
+    B_80008EF8 = IO_READ(SP_DMEM_START + 0xFF4);
+    B_80008EFC = IO_READ(SP_DMEM_START + 0xFFC);
+    func_80001714();
+}
+
+s32 func_80001714(void) {
+    return 0;
+}
+
+void func_80001720(void) {
+    B_80008EE0 = IO_READ(0x002FB1F4);
+    B_80008EE4 = IO_READ(0x002FE1C0);
+}
diff --git a/src/boot/yaz0.c b/src/boot/yaz0.c
index 8ea1a52959..6e56fbbe36 100644
--- a/src/boot/yaz0.c
+++ b/src/boot/yaz0.c
@@ -1,5 +1,7 @@
 #include "global.h"
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128 gc-jp:128 gc-jp-ce:128 gc-jp-mq:128 gc-us:128 gc-us-mq:128"
+
 ALIGNED(16) u8 sYaz0DataBuffer[0x400];
 u8* sYaz0DataBufferEnd;
 uintptr_t sYaz0CurRomStart;
diff --git a/src/boot/z_std_dma.c b/src/boot/z_std_dma.c
index bc1a5ca216..c331ea0c83 100644
--- a/src/boot/z_std_dma.c
+++ b/src/boot/z_std_dma.c
@@ -24,6 +24,8 @@
 #include "n64dd.h"
 #endif
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128 gc-jp:128 gc-jp-ce:128 gc-jp-mq:128 gc-us:128 gc-us-mq:128"
+
 StackEntry sDmaMgrStackInfo;
 OSMesgQueue sDmaMgrMsgQueue;
 OSMesg sDmaMgrMsgBuf[32];
diff --git a/src/code/game.c b/src/code/game.c
index e10d650fbf..7a53acdda8 100644
--- a/src/code/game.c
+++ b/src/code/game.c
@@ -1,6 +1,8 @@
 #include "global.h"
 #include "terminal.h"
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128 gc-jp:128 gc-jp-ce:128 gc-jp-mq:128 gc-us:128 gc-us-mq:128"
+
 SpeedMeter D_801664D0;
 VisCvg sVisCvg;
 VisZBuf sVisZBuf;
diff --git a/src/code/graph.c b/src/code/graph.c
index 1fffacac5e..747416399b 100644
--- a/src/code/graph.c
+++ b/src/code/graph.c
@@ -4,6 +4,8 @@
 #define GFXPOOL_HEAD_MAGIC 0x1234
 #define GFXPOOL_TAIL_MAGIC 0x5678
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128"
+
 /**
  * The time at which the previous `Graph_Update` ended.
  */
diff --git a/src/code/main.c b/src/code/main.c
index 1b67009cbd..2e46ae825b 100644
--- a/src/code/main.c
+++ b/src/code/main.c
@@ -1,5 +1,10 @@
 #include "global.h"
 #include "terminal.h"
+#include "versions.h"
+#if PLATFORM_N64
+#include "cic6105.h"
+#include "n64dd.h"
+#endif
 
 extern u8 _buffersSegmentEnd[];
 
@@ -52,8 +57,20 @@ void Main(void* arg) {
     gAppNmiBufferPtr = (PreNmiBuff*)osAppNMIBuffer;
     PreNmiBuff_Init(gAppNmiBufferPtr);
     Fault_Init();
+#if PLATFORM_N64
+    func_800ADA80();
+    if ((u8)B_80121AE1 != 0) {
+        systemHeapStart = (uintptr_t)&D_801E8090;
+        SysCfb_Init(1);
+    } else {
+        func_800ADAF8();
+        systemHeapStart = (uintptr_t)_buffersSegmentEnd;
+        SysCfb_Init(0);
+    }
+#else
     SysCfb_Init(0);
     systemHeapStart = (uintptr_t)_buffersSegmentEnd;
+#endif
     fb = (uintptr_t)SysCfb_GetFbPtr(0);
     gSystemHeapSize = fb - systemHeapStart;
     PRINTF(T("システムヒープ初期化 %08x-%08x %08x\n", "System heap initalization %08x-%08x %08x\n"), systemHeapStart,
@@ -97,6 +114,11 @@ void Main(void* arg) {
     StackCheck_Init(&sSchedStackInfo, sSchedStack, STACK_TOP(sSchedStack), 0, 0x100, "sched");
     Sched_Init(&gScheduler, STACK_TOP(sSchedStack), THREAD_PRI_SCHED, gViConfigModeType, 1, &gIrqMgr);
 
+#if PLATFORM_N64
+    CIC6105_AddFaultClient();
+    func_80001640();
+#endif
+
     IrqMgr_AddClient(&gIrqMgr, &irqClient, &irqMgrMsgQueue);
 
     StackCheck_Init(&sAudioStackInfo, sAudioStack, STACK_TOP(sAudioStack), 0, 0x100, "audio");
@@ -119,14 +141,19 @@ void Main(void* arg) {
         if (msg == NULL) {
             break;
         }
-        if (*msg == OS_SC_PRE_NMI_MSG) {
-            PRINTF(T("main.c: リセットされたみたいだよ\n", "main.c: Looks like it's been reset\n"));
-            PreNmiBuff_SetReset(gAppNmiBufferPtr);
+        switch (*msg) {
+            case OS_SC_PRE_NMI_MSG:
+                PRINTF(T("main.c: リセットされたみたいだよ\n", "main.c: Looks like it's been reset\n"));
+                PreNmiBuff_SetReset(gAppNmiBufferPtr);
+                break;
         }
     }
 
     PRINTF(T("mainproc 後始末\n", "mainproc Cleanup\n"));
     osDestroyThread(&sGraphThread);
     RcpUtils_Reset();
+#if PLATFORM_N64
+    CIC6105_RemoveFaultClient();
+#endif
     PRINTF(T("mainproc 実行終了\n", "mainproc End of execution\n"));
 }
diff --git a/src/code/sched.c b/src/code/sched.c
index fbfc42dc07..ef34a4f6ad 100644
--- a/src/code/sched.c
+++ b/src/code/sched.c
@@ -45,6 +45,8 @@
 #define RDP_DONE_MSG 668
 #define NOTIFY_MSG 670 // original name: ENTRY_MSG
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128 gc-jp:128 gc-jp-ce:128 gc-jp-mq:128 gc-us:128 gc-us-mq:128"
+
 OSTime sRSPGfxTimeStart;
 OSTime sRSPAudioTimeStart;
 OSTime sRSPOtherTimeStart;
diff --git a/src/code/speed_meter.c b/src/code/speed_meter.c
index a9ddee0714..13e2622c61 100644
--- a/src/code/speed_meter.c
+++ b/src/code/speed_meter.c
@@ -1,3 +1,5 @@
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128"
+
 #include "global.h"
 #include "terminal.h"
 
diff --git a/src/code/sys_cfb.c b/src/code/sys_cfb.c
index 28019c3e7d..3d5457913a 100644
--- a/src/code/sys_cfb.c
+++ b/src/code/sys_cfb.c
@@ -1,5 +1,7 @@
 #include "global.h"
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128"
+
 uintptr_t sSysCfbFbPtr[2];
 uintptr_t sSysCfbEnd;
 
diff --git a/src/code/sys_matrix.c b/src/code/sys_matrix.c
index 2ca6e4cf47..550b39e4e7 100644
--- a/src/code/sys_matrix.c
+++ b/src/code/sys_matrix.c
@@ -16,6 +16,8 @@ MtxF gMtxFClear = {
 };
 // clang-format on
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128"
+
 MtxF* sMatrixStack;   // "Matrix_stack"
 MtxF* sCurrentMatrix; // "Matrix_now"
 
diff --git a/src/code/z_debug.c b/src/code/z_debug.c
index 3e6e184944..d668f490a6 100644
--- a/src/code/z_debug.c
+++ b/src/code/z_debug.c
@@ -12,6 +12,8 @@ typedef struct InputCombo {
     /* 0x2 */ u16 press;
 } InputCombo; // size = 0x4
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128 gc-jp:128 gc-jp-ce:128 gc-jp-mq:128 gc-us:128 gc-us-mq:128"
+
 RegEditor* gRegEditor;
 
 DebugCamTextBufferEntry sDebugCamTextBuffer[22];
diff --git a/src/code/z_player_call.c b/src/code/z_player_call.c
index 38812cb0f6..2235c8b3d8 100644
--- a/src/code/z_player_call.c
+++ b/src/code/z_player_call.c
@@ -2,6 +2,8 @@
 
 #define FLAGS (ACTOR_FLAG_0 | ACTOR_FLAG_2 | ACTOR_FLAG_4 | ACTOR_FLAG_5 | ACTOR_FLAG_25 | ACTOR_FLAG_26)
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128 gc-jp:128 gc-jp-ce:128 gc-jp-mq:128 gc-us:128 gc-us-mq:128"
+
 void (*sPlayerCallInitFunc)(Actor* thisx, PlayState* play);
 void (*sPlayerCallDestroyFunc)(Actor* thisx, PlayState* play);
 void (*sPlayerCallUpdateFunc)(Actor* thisx, PlayState* play);
diff --git a/src/code/z_skin.c b/src/code/z_skin.c
index 69a14f0656..ab3b8624a4 100644
--- a/src/code/z_skin.c
+++ b/src/code/z_skin.c
@@ -1,5 +1,7 @@
 #include "global.h"
 
+#pragma increment_block_number "gc-eu:128 gc-eu-mq:128"
+
 MtxF gSkinLimbMatrices[60]; // holds matrices for each limb of the skeleton currently being drawn
 
 static s32 sUnused;
diff --git a/tools/disasm/ntsc-1.2/functions.txt b/tools/disasm/ntsc-1.2/functions.txt
index 36010b319d..f63400871a 100644
--- a/tools/disasm/ntsc-1.2/functions.txt
+++ b/tools/disasm/ntsc-1.2/functions.txt
@@ -21,12 +21,13 @@ Yaz0_DecompressImpl = 0x8000127C; // type:func
 Yaz0_Decompress = 0x800013E4; // type:func
 Locale_Init = 0x80001430; // type:func
 Locale_ResetRegion = 0x800014BC; // type:func
-func_800014E8_unknown = 0x800014E8; // type:func
-func_800014FC_unknown = 0x800014FC; // type:func
-func_800015E8_unknown = 0x800015E8; // type:func
-func_8000161C_unknown = 0x8000161C; // type:func
-func_80001640_unknown = 0x80001640; // type:func
-func_80001714_unknown = 0x80001714; // type:func
+func_800014D0 = 0x800014D0; // type:func
+func_800014E8 = 0x800014E8; // type:func
+CIC6105_FaultClient = 0x800014FC; // type:func
+CIC6105_AddFaultClient = 0x800015E8; // type:func
+CIC6105_RemoveFaultClient = 0x8000161C; // type:func
+func_80001640 = 0x80001640; // type:func
+func_80001714 = 0x80001714; // type:func
 func_80001720 = 0x80001720; // type:func
 osSyncPrintfUnused = 0x80001750; // type:func
 osSyncPrintf = 0x8000176C; // type:func
diff --git a/tools/disasm/ntsc-1.2/variables.txt b/tools/disasm/ntsc-1.2/variables.txt
index e03651359f..9d08423a88 100644
--- a/tools/disasm/ntsc-1.2/variables.txt
+++ b/tools/disasm/ntsc-1.2/variables.txt
@@ -26,3 +26,33 @@ gBitFlags = 0x800F9240; // size:0x80 type:u32[32]
 gSfxDefaultPos = 0x801049D4; // size:0xC type:Vec3f
 gSfxDefaultFreqAndVolScale = 0x801049E0; // size:0x4 type:f32
 gSfxDefaultReverb = 0x801049E8; // size:0x1 type:s8
+B_80008EE0 = 0x80008EE0; // size:0x4 type:s32
+B_80008EE4 = 0x80008EE4; // size:0x4 type:s32
+sCIC6105FaultClient = 0x80008EE8; // size:0x10 type:FaultClient
+B_80008EF8 = 0x80008EF8; // size:0x4 type:s32
+B_80008EFC = 0x80008EFC; // size:0x4 type:s32
+gAppNmiBufferPtr = 0x8011D970; // size:0x4 type:PreNmiBuff*
+sSerialEventQueue = 0x801217E0; // size:0x18 type:OSMesgQueue
+sSerialMsgBuf = 0x801217F8; // size:0x4 type:OSMesg[1]
+sIrqMgrStackInfo = 0x801214E8;
+sIrqMgrStack = 0x80120F68;
+gIrqMgr = 0x8011E038; // size:0x280 type:IrqMgr
+sSchedStackInfo = 0x80121488;
+sSchedStack = 0x8011FC68;
+gScheduler = 0x8011D978; // size:0x258 type:Scheduler
+gViConfigModeType = 0x80008350; // size:0x1 type:u8
+sAudioStackInfo = 0x801214A8;
+sAudioStack = 0x80120268;
+gAudioMgr = 0x80121548; // size:0x298 type:AudioMgr
+sPadMgrStackInfo = 0x801214C8;
+sPadMgrStack = 0x80120A68;
+gPadMgr = 0x8011DBD0; // size:0x468 type:PadMgr
+sSerialEventQueue = 0x801217E0;
+sGraphStackInfo = 0x80121468;
+sGraphStack = 0x8011E468;
+sGraphThread = 0x8011E2B8;
+rspbootTextStart = 0x800065C0;
+rspbootTextEnd = 0x80006720;
+cic6105ucodeTextStart = 0x80006720;
+gBuildTeam = 0x80006D30;
+gBuildDate = 0x80006D3C;
diff --git a/undefined_syms.txt b/undefined_syms.txt
index eda4353687..6b1d6f5cad 100644
--- a/undefined_syms.txt
+++ b/undefined_syms.txt
@@ -16,6 +16,11 @@ D_06000000 = 0x06000000;
 func_80001720 = 0x80001720;
 osInitialize = 0x80003230;
 
+// cic6105.c
+cic6105ucodeTextStart = 0x80006720;
+func_800AE258_unknown = 0x800AE258;
+func_800AE1E0_unknown = 0x800AE1E0;
+
 // code_n64dd_800AD410.c
 func_800ADCD8_unknown = 0x800ADCD8;
 func_800AE170_unknown = 0x800AE170;