diff --git a/data/unk_80009410.data.s b/data/unk_80009410.data.s
deleted file mode 100644
index 175b179a58..0000000000
--- a/data/unk_80009410.data.s
+++ /dev/null
@@ -1,27 +0,0 @@
-.include "macro.inc"
-
-/* assembler directives */
-.set noat      /* allow manual use of $at */
-.set noreorder /* don't insert nops after branches */
-.set gp=64     /* allow use of 64-bit general purpose registers */
-
-.section .data
-
-.balign 16
-
-/* Unused */
-glabel D_80009410
-    .word osStopThread
-    .word __osSetHWIntrRoutine
-#if PLATFORM_N64
-    .word osEPiWriteIo
-    .word osEPiReadIo
-#endif
-    .word __osSetFpcCsr
-    .word __osGetFpcCsr
-    .word __osGetHWIntrRoutine
-    .word __osSetHWIntrRoutine
-    .word osViGetNextFramebuffer
-#if !PLATFORM_N64
-    .word bcmp
-#endif
diff --git a/include/gfx.h b/include/gfx.h
index edc6217a3d..2c3d2b0a87 100644
--- a/include/gfx.h
+++ b/include/gfx.h
@@ -5,6 +5,7 @@
 #include "ultra64/gbi.h"
 #include "sched.h"
 #include "thga.h"
+#include "versions.h"
 
 // Texture memory size, 4 KiB
 #define TMEM_SIZE 0x1000
@@ -46,8 +47,10 @@ typedef struct GraphicsContext {
     /* 0x02E8 */ s32 fbIdx;
     /* 0x02EC */ void (*callback)(struct GraphicsContext*, void*);
     /* 0x02F0 */ void* callbackParam;
+#if OOT_VERSION >= PAL_1_0
     /* 0x02F4 */ f32 xScale;
     /* 0x02F8 */ f32 yScale;
+#endif
     /* 0x02FC */ char unk_2FC[0x04];
 } GraphicsContext; // size = 0x300
 
diff --git a/include/sched.h b/include/sched.h
index e170817015..2d20e7ec09 100644
--- a/include/sched.h
+++ b/include/sched.h
@@ -3,6 +3,7 @@
 
 #include "ultra64.h"
 #include "irqmgr.h"
+#include "versions.h"
 
 #define OS_SC_NEEDS_RDP     0x0001  // Task uses the RDP
 #define OS_SC_NEEDS_RSP     0x0002  // Task uses the RSP
@@ -27,8 +28,10 @@ typedef struct CfbInfo {
     /* 0x10 */ u8 unk_10;           // set to 0, never read
     /* 0x11 */ s8 updateRate;       // how many VIs should elapse before next swap
     /* 0x12 */ s8 updateTimer;      // counts down (in VIs) from updateRate to 0, swaps the framebuffer at 0
+#if OOT_VERSION >= PAL_1_0
     /* 0x14 */ f32 xScale;
     /* 0x18 */ f32 yScale;
+#endif
 } CfbInfo; // size = 0x1C
 
 typedef struct OSScTask {
diff --git a/spec b/spec
index 6ea4769395..74d2cfe2a2 100644
--- a/spec
+++ b/spec
@@ -15,9 +15,11 @@ beginseg
     name "boot"
     address 0x80000460
     include "$(BUILD_DIR)/src/boot/boot_main.o"
-    include "$(BUILD_DIR)/data/unk_80009410.data.o"
     include "$(BUILD_DIR)/src/boot/idle.o"
+#if OOT_VERSION >= PAL_1_0
     include "$(BUILD_DIR)/src/boot/viconfig.o"
+#endif
+    include "$(BUILD_DIR)/src/boot/carthandle.o"
     include "$(BUILD_DIR)/src/boot/z_std_dma.o"
     include "$(BUILD_DIR)/src/boot/yaz0.o"
     include "$(BUILD_DIR)/src/boot/z_locale.o"
@@ -41,8 +43,10 @@ beginseg
     include "$(BUILD_DIR)/src/libultra/io/piacs.o"
     include "$(BUILD_DIR)/src/libultra/os/sendmesg.o"
     include "$(BUILD_DIR)/src/libultra/os/stopthread.o"
+#if OOT_VERSION >= PAL_1_0
     include "$(BUILD_DIR)/src/libultra/io/viextendvstart.o"
     include "$(BUILD_DIR)/src/libultra/io/vimodepallan1.o"
+#endif
     include "$(BUILD_DIR)/src/libultra/os/recvmesg.o"
 #if !PLATFORM_N64
     include "$(BUILD_DIR)/src/libultra/os/initialize.o"
@@ -92,7 +96,9 @@ beginseg
     include "$(BUILD_DIR)/src/libultra/os/setthreadpri.o"
     include "$(BUILD_DIR)/src/libultra/os/getthreadpri.o"
     include "$(BUILD_DIR)/src/libultra/io/epirawread.o"
+#if OOT_VERSION >= PAL_1_0
     include "$(BUILD_DIR)/src/libultra/io/viswapbuf.o"
+#endif
     include "$(BUILD_DIR)/src/libultra/io/epirawdma.o"
 #if !PLATFORM_N64
     include "$(BUILD_DIR)/src/libultra/libc/bcmp.o"
@@ -113,11 +119,16 @@ beginseg
 #if OOT_PAL_N64
     include "$(BUILD_DIR)/src/libultra/io/vimodentsclan1.o"
     include "$(BUILD_DIR)/src/libultra/io/vimodempallan1.o"
+#endif
+#if OOT_VERSION < PAL_1_0
+    include "$(BUILD_DIR)/src/libultra/io/vimodepallan1.o"
 #endif
     include "$(BUILD_DIR)/src/libultra/io/viswapcontext.o"
     include "$(BUILD_DIR)/src/libultra/io/pigetcmdq.o"
     include "$(BUILD_DIR)/src/libultra/io/epiread.o"
+#if OOT_VERSION >= PAL_1_0
     include "$(BUILD_DIR)/src/libultra/io/visetspecial.o"
+#endif
     include "$(BUILD_DIR)/src/libultra/io/cartrominit.o"
 #if OOT_PAL_N64 || OOT_DEBUG
     include "$(BUILD_DIR)/src/libultra/io/vimodefpallan1.o"
@@ -143,8 +154,10 @@ beginseg
     include "$(BUILD_DIR)/src/libultra/io/vimgr.o"
     include "$(BUILD_DIR)/src/libultra/io/vigetcurrcontext.o"
     include "$(BUILD_DIR)/src/libultra/os/startthread.o"
+#if OOT_VERSION >= PAL_1_0
     include "$(BUILD_DIR)/src/libultra/io/visetyscale.o"
     include "$(BUILD_DIR)/src/libultra/io/visetxscale.o"
+#endif
     include "$(BUILD_DIR)/src/libultra/os/sethwintrroutine.o"
     include "$(BUILD_DIR)/src/libultra/os/gethwintrroutine.o"
 #if !PLATFORM_N64
@@ -452,6 +465,15 @@ beginseg
     number 7
 endseg
 
+#if OOT_NTSC && OOT_VERSION < NTSC_1_2
+beginseg
+    name "jpn_message_data_static"
+    romalign 0x1000
+    include "$(BUILD_DIR)/assets/text/jpn_message_data_static.o"
+    number 8
+endseg
+#endif
+
 beginseg
     name "message_texture_static"
     romalign 0x1000
@@ -466,7 +488,7 @@ beginseg
     number 10
 endseg
 
-#if OOT_NTSC
+#if OOT_NTSC && OOT_VERSION >= NTSC_1_2
 beginseg
     name "jpn_message_data_static"
     romalign 0x1000
@@ -807,6 +829,9 @@ beginseg
     include "$(BUILD_DIR)/src/libultra/libc/string.o"
 #endif
     include "$(BUILD_DIR)/src/libultra/io/sp.o"
+#if OOT_VERSION < PAL_1_0
+    include "$(BUILD_DIR)/src/libultra/io/viswapbuf.o"
+#endif
 #if !PLATFORM_N64
     include "$(BUILD_DIR)/src/libultra/mgu/mtxident.o"
 #endif
@@ -828,6 +853,9 @@ beginseg
     include "$(BUILD_DIR)/src/libultra/gu/ortho.o"
     include "$(BUILD_DIR)/src/libultra/gu/cosf.o"
     include "$(BUILD_DIR)/src/libultra/gu/libm_vals.o"
+#if OOT_VERSION < PAL_1_0
+    include "$(BUILD_DIR)/src/libultra/io/visetspecial.o"
+#endif
     include "$(BUILD_DIR)/src/libultra/gu/coss.o"
 #if PLATFORM_N64
     include "$(BUILD_DIR)/src/libultra/os/settime.o"
@@ -851,7 +879,7 @@ beginseg
     include "$(BUILD_DIR)/src/libultra/mgu/translate.o"
 #endif
     include "$(BUILD_DIR)/src/libultra/io/contramwrite.o"
-#if !OOT_PAL_N64 && !OOT_DEBUG
+#if OOT_VERSION == NTSC_1_2 || (PLATFORM_GC && !OOT_DEBUG)
     include "$(BUILD_DIR)/src/libultra/io/vimodefpallan1.o"
 #endif
 #if !OOT_DEBUG
@@ -886,6 +914,9 @@ beginseg
     include "$(BUILD_DIR)/src/libultra/mgu/mtxf2l.o"
 #endif
     include "$(BUILD_DIR)/src/libultra/libc/llcvt.o"
+#if OOT_VERSION < PAL_1_0
+    include "$(BUILD_DIR)/src/libultra/io/visetyscale.o"
+#endif
     include "$(BUILD_DIR)/src/libultra/io/vigetcurrframebuf.o"
     include "$(BUILD_DIR)/src/libultra/io/spsetpc.o"
     include "$(BUILD_DIR)/src/libc/sqrt.o"
diff --git a/src/boot/carthandle.c b/src/boot/carthandle.c
new file mode 100644
index 0000000000..16d3160b55
--- /dev/null
+++ b/src/boot/carthandle.c
@@ -0,0 +1,3 @@
+#include "ultra64.h"
+
+OSPiHandle* gCartHandle = NULL;
diff --git a/src/boot/idle.c b/src/boot/idle.c
index eca094e640..7128309e00 100644
--- a/src/boot/idle.c
+++ b/src/boot/idle.c
@@ -6,19 +6,33 @@
 #pragma increment_block_number "gc-eu:64 gc-eu-mq:64 gc-jp:64 gc-jp-ce:64 gc-jp-mq:64 gc-us:64 gc-us-mq:64 ntsc-1.2:64"
 
 OSThread sMainThread;
+#if OOT_VERSION < PAL_1_0
+STACK(sMainStack, 0x800);
+#else
 STACK(sMainStack, 0x900);
+#endif
 StackEntry sMainStackInfo;
 OSMesg sPiMgrCmdBuff[50];
 OSMesgQueue gPiMgrCmdQueue;
 OSViMode gViConfigMode;
-u8 gViConfigModeType;
 
-s8 D_80009430 = 1;
-vu8 gViConfigBlack = true;
-u8 gViConfigAdditionalScanLines = 0;
-u32 gViConfigFeatures = OS_VI_DITHER_FILTER_ON | OS_VI_GAMMA_OFF;
-f32 gViConfigXScale = 1.0;
-f32 gViConfigYScale = 1.0;
+#if OOT_VERSION < PAL_1_0
+u8 gViConfigModeType = OS_VI_NTSC_LPN1;
+#else
+u8 gViConfigModeType;
+#endif
+
+// Unused
+void* D_80009410[] = {
+    osStopThread,  __osSetHWIntrRoutine,
+#if PLATFORM_N64
+    osEPiWriteIo,  osEPiReadIo,
+#endif
+    __osSetFpcCsr, __osGetFpcCsr,        __osGetHWIntrRoutine, __osSetHWIntrRoutine, osViGetNextFramebuffer,
+#if !PLATFORM_N64
+    bcmp,
+#endif
+};
 
 void Main_ThreadEntry(void* arg) {
     OSTime time;
@@ -60,9 +74,11 @@ void Idle_ThreadEntry(void* arg) {
 
     osCreateViManager(OS_PRIORITY_VIMGR);
 
+#if OOT_VERSION >= PAL_1_0
     gViConfigFeatures = OS_VI_GAMMA_OFF | OS_VI_DITHER_FILTER_ON;
     gViConfigXScale = 1.0f;
     gViConfigYScale = 1.0f;
+#endif
 
 #if OOT_DEBUG
     // Allow both 60 Hz and 50 Hz
@@ -110,11 +126,17 @@ void Idle_ThreadEntry(void* arg) {
     }
 #endif
 
+#if OOT_VERSION < PAL_1_0
+    osViSetMode(&gViConfigMode);
+    osViBlack(true);
+#else
     D_80009430 = 1;
     osViSetMode(&gViConfigMode);
     ViConfig_UpdateVi(true);
     osViBlack(true);
     osViSwapBuffer((void*)0x803DA80); //! @bug Invalid vram address (probably intended to be 0x803DA800)
+#endif
+
     osCreatePiManager(OS_PRIORITY_PIMGR, &gPiMgrCmdQueue, sPiMgrCmdBuff, ARRAY_COUNT(sPiMgrCmdBuff));
     StackCheck_Init(&sMainStackInfo, sMainStack, STACK_TOP(sMainStack), 0, 0x400, "main");
     osCreateThread(&sMainThread, THREAD_ID_MAIN, Main_ThreadEntry, arg, STACK_TOP(sMainStack), THREAD_PRI_MAIN_INIT);
diff --git a/src/boot/viconfig.c b/src/boot/viconfig.c
index 4ac95122c7..ae50922e63 100644
--- a/src/boot/viconfig.c
+++ b/src/boot/viconfig.c
@@ -1,8 +1,12 @@
 #include "global.h"
 #include "terminal.h"
 
-// this should probably go elsewhere but right now viconfig.o is the only object between idle and z_std_dma
-OSPiHandle* gCartHandle = NULL;
+s8 D_80009430 = 1;
+vu8 gViConfigBlack = true;
+u8 gViConfigAdditionalScanLines = 0;
+u32 gViConfigFeatures = OS_VI_DITHER_FILTER_ON | OS_VI_GAMMA_OFF;
+f32 gViConfigXScale = 1.0;
+f32 gViConfigYScale = 1.0;
 
 void ViConfig_UpdateVi(u32 black) {
     if (black) {
diff --git a/src/boot/z_locale.c b/src/boot/z_locale.c
index 2ff79fb013..6d60af64b4 100644
--- a/src/boot/z_locale.c
+++ b/src/boot/z_locale.c
@@ -1,6 +1,7 @@
 #include "global.h"
 #include "region.h"
 #include "terminal.h"
+#include "versions.h"
 
 s32 gCurrentRegion = 0;
 
@@ -29,9 +30,11 @@ void Locale_Init(void) {
         case 'E': // "NTSC-U (North America)"
             gCurrentRegion = REGION_US;
             break;
+#if OOT_VERSION >= PAL_1_0
         case 'P': // "PAL (Europe)"
             gCurrentRegion = REGION_EU;
             break;
+#endif
         default:
             PRINTF(VT_COL(RED, WHITE));
             PRINTF(T("z_locale_init: 日本用かアメリカ用か判別できません\n",
diff --git a/src/code/game.c b/src/code/game.c
index 45362fb586..2b665e0d8d 100644
--- a/src/code/game.c
+++ b/src/code/game.c
@@ -2,6 +2,7 @@
 #include "fault.h"
 #include "libc64/os_malloc.h"
 #include "terminal.h"
+#include "versions.h"
 #if PLATFORM_N64
 #include "n64dd.h"
 #endif
@@ -281,6 +282,14 @@ void GameState_Update(GameState* gameState) {
 
     func_800C4344(gameState);
 
+#if OOT_VERSION < PAL_1_0
+    if (R_VI_MODE_EDIT_STATE != VI_MODE_EDIT_STATE_INACTIVE) {
+        ViMode_Update(&sViMode, &gameState->input[0]);
+        gfxCtx->viMode = &sViMode.customViMode;
+        gfxCtx->viFeatures = sViMode.viFeatures;
+    }
+#endif
+
 #if OOT_DEBUG
     if (SREG(63) == 1u) {
         if (R_VI_MODE_EDIT_STATE < VI_MODE_EDIT_STATE_INACTIVE) {
diff --git a/src/code/graph.c b/src/code/graph.c
index 5aadf9cc80..2ecd87dd12 100644
--- a/src/code/graph.c
+++ b/src/code/graph.c
@@ -2,6 +2,7 @@
 #include "fault.h"
 #include "terminal.h"
 #include "ucode_disas.h"
+#include "versions.h"
 
 #define GFXPOOL_HEAD_MAGIC 0x1234
 #define GFXPOOL_TAIL_MAGIC 0x5678
@@ -140,10 +141,17 @@ void Graph_Init(GraphicsContext* gfxCtx) {
     gfxCtx->gfxPoolIdx = 0;
     gfxCtx->fbIdx = 0;
     gfxCtx->viMode = NULL;
+
+#if OOT_VERSION < PAL_1_0
+    gfxCtx->viFeatures = 0;
+#else
     gfxCtx->viFeatures = gViConfigFeatures;
     gfxCtx->xScale = gViConfigXScale;
     gfxCtx->yScale = gViConfigYScale;
+#endif
+
     osCreateMesgQueue(&gfxCtx->queue, gfxCtx->msgBuff, ARRAY_COUNT(gfxCtx->msgBuff));
+
 #if OOT_DEBUG
     func_800D31F0();
     Fault_AddClient(&sGraphFaultClient, Graph_FaultClient, NULL, NULL);
@@ -272,8 +280,10 @@ void Graph_TaskSet00(GraphicsContext* gfxCtx) {
 
         cfb->viMode = gfxCtx->viMode;
         cfb->viFeatures = gfxCtx->viFeatures;
+#if OOT_VERSION >= PAL_1_0
         cfb->xScale = gfxCtx->xScale;
         cfb->yScale = gfxCtx->yScale;
+#endif
         cfb->unk_10 = 0;
         cfb->updateRate = R_UPDATE_RATE;
 
diff --git a/src/code/sched.c b/src/code/sched.c
index 77860aa511..3374da65e6 100644
--- a/src/code/sched.c
+++ b/src/code/sched.c
@@ -41,6 +41,7 @@
  */
 #include "global.h"
 #include "fault.h"
+#include "versions.h"
 
 #define RSP_DONE_MSG 667
 #define RDP_DONE_MSG 668
@@ -53,7 +54,7 @@ OSTime sRSPAudioTimeStart;
 OSTime sRSPOtherTimeStart;
 OSTime sRDPTimeStart;
 
-#if OOT_DEBUG
+#if OOT_VERSION < PAL_1_0 || OOT_DEBUG
 vs32 sSchedDebugPrintfEnabled = false;
 
 #define SCHED_DEBUG_PRINTF        \
@@ -115,10 +116,29 @@ void Sched_SwapFrameBufferImpl(CfbInfo* cfbInfo) {
 #endif
     }
 
+#if OOT_VERSION < PAL_1_0
+    if (cfbInfo->viMode != NULL) {
+        osViSetMode(cfbInfo->viMode);
+        osViSetSpecialFeatures(cfbInfo->viFeatures);
+    }
+    if (1) {}
+    if (1) {}
+    if (1) {}
+    if (1) {}
+    if (1) {}
+#endif
+
     cfbInfo->unk_10 = 0;
 }
 
 void Sched_SwapFrameBuffer(Scheduler* sc, CfbInfo* cfbInfo) {
+#if OOT_VERSION < PAL_1_0
+    Sched_SwapFrameBufferImpl(cfbInfo);
+    if (sc->isFirstSwap) {
+        osViBlack(false);
+        sc->isFirstSwap = false;
+    }
+#else
     if (sc->isFirstSwap) {
         sc->isFirstSwap = false;
 
@@ -127,6 +147,7 @@ void Sched_SwapFrameBuffer(Scheduler* sc, CfbInfo* cfbInfo) {
         }
     }
     Sched_SwapFrameBufferImpl(cfbInfo);
+#endif
 }
 
 void Sched_HandlePreNMI(Scheduler* sc) {
@@ -162,7 +183,12 @@ void Sched_HandlePreNMI(Scheduler* sc) {
 
 void Sched_HandleNMI(Scheduler* sc) {
     // black the screen and reset the VI y scale just in time for NMI reset
+#if OOT_VERSION < PAL_1_0
+    osViSetYScale(1.0f);
+    osViBlack(true);
+#else
     ViConfig_UpdateVi(true);
+#endif
 }
 
 /**
@@ -424,6 +450,13 @@ void Sched_RunTask(Scheduler* sc, OSScTask* spTask, OSScTask* dpTask) {
 
         // If the task also uses the RDP, set current running RDP task
         if (spTask == dpTask && sc->curRDPTask == NULL) {
+#if OOT_VERSION < PAL_1_0
+            // Unknown SCHED_DEBUG_PRINTF calls
+            if (sSchedDebugPrintfEnabled) {}
+            if (sSchedDebugPrintfEnabled) {}
+            if (sSchedDebugPrintfEnabled) {}
+#endif
+
             sc->curRDPTask = dpTask;
             sRDPTimeStart = sRSPGfxTimeStart;
         }
@@ -467,7 +500,9 @@ void Sched_HandleNotification(Scheduler* sc) {
 void Sched_HandleRetrace(Scheduler* sc) {
     SCHED_DEBUG_PRINTF("%08d:scHandleRetrace %08x\n", (u32)OS_CYCLES_TO_USEC(osGetTime()), osViGetCurrentFramebuffer());
 
+#if OOT_VERSION >= PAL_1_0
     ViConfig_UpdateBlack();
+#endif
     sc->retraceCount++;
 
     // Retrace handlers run after VI context swap. The last swap buffer may now be the current buffer.
@@ -649,6 +684,12 @@ void Sched_Init(Scheduler* sc, void* stack, OSPri priority, u8 viModeType, UNK_T
     // Create message queues for receiving interrupt events and tasks
     osCreateMesgQueue(&sc->interruptQueue, sc->interruptMsgBuf, ARRAY_COUNT(sc->interruptMsgBuf));
     osCreateMesgQueue(&sc->cmdQueue, sc->cmdMsgBuf, ARRAY_COUNT(sc->cmdMsgBuf));
+
+#if OOT_VERSION < PAL_1_0
+    osViBlack(true);
+    osViSetSpecialFeatures(OS_VI_DITHER_FILTER_ON | OS_VI_GAMMA_OFF);
+#endif
+
     osSetEventMesg(OS_EVENT_SP, &sc->interruptQueue, (OSMesg)RSP_DONE_MSG);
     osSetEventMesg(OS_EVENT_DP, &sc->interruptQueue, (OSMesg)RDP_DONE_MSG);
     IrqMgr_AddClient(irqMgr, &sc->irqClient, &sc->interruptQueue);
diff --git a/src/code/z_prenmi.c b/src/code/z_prenmi.c
index 29ea097d68..e1bb151453 100644
--- a/src/code/z_prenmi.c
+++ b/src/code/z_prenmi.c
@@ -1,5 +1,6 @@
 #include "global.h"
 #include "terminal.h"
+#include "versions.h"
 
 void func_80092320(PreNMIState* this) {
     this->state.running = false;
@@ -17,7 +18,12 @@ void PreNMI_Update(PreNMIState* this) {
     }
 
     if (this->timer == 0) {
+#if OOT_VERSION < PAL_1_0
+        osViSetYScale(1.0f);
+        osViBlack(true);
+#else
         ViConfig_UpdateVi(true);
+#endif
         func_80092320(this);
         return;
     }