diff --git a/ld_script.txt b/ld_script.txt
index 78d27eb7f..2ab0f780b 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -110,6 +110,7 @@ SECTIONS {
         asm/reset_rtc_screen.o(.text);
         src/start_menu.o(.text);
         asm/start_menu.o(.text);
+        src/tileset_anims.o(.text);
         src/palette.o(.text);
         src/sound.o(.text);
         asm/battle_anim.o(.text);
@@ -356,6 +357,7 @@ SECTIONS {
         data/reset_rtc_screen.o(.rodata);
         data/start_menu.o(.rodata);
         data/tileset.o(.rodata);
+        src/tileset_anims.o(.rodata);
         src/palette.o(.rodata);
         data/fanfares.o(.rodata);
         data/battle_anims.o(.rodata);
diff --git a/src/palette.c b/src/palette.c
index ed7eb99b3..d60efdbc5 100644
--- a/src/palette.c
+++ b/src/palette.c
@@ -3,7 +3,6 @@
 #include "palette.h"
 #include "decompress.h"
 #include "gpu_regs.h"
-#include "battle.h"
 #include "task.h"
 
 enum
@@ -42,8 +41,6 @@ struct PaletteStruct
     u8 ps_field_9;
 };
 
-static void cur_mapheader_run_tileset1_func(void);
-static void cur_mapheader_run_tileset2_func(void);
 static void unused_sub_80A1CDC(struct PaletteStruct *, u32 *);
 static void unused_sub_80A1E40(struct PaletteStruct *, u32 *);
 static void unused_sub_80A1F00(struct PaletteStruct *);
@@ -56,11 +53,6 @@ static void UpdateBlendRegisters(void);
 static bool8 IsSoftwarePaletteFadeFinishing(void);
 static void sub_80A2D54(u8 taskId);
 
-static EWRAM_DATA struct {
-    const u16 *src;
-    u16 *dest;
-    u16 size;
-} sTilesetDMA3TransferBuffer[20] = {0};
 EWRAM_DATA u16 gPlttBufferUnfaded[0x200] = {0};
 EWRAM_DATA u16 gPlttBufferFaded[0x200] = {0};
 EWRAM_DATA struct PaletteStruct sPaletteStructs[0x10] = {0};
@@ -69,54 +61,6 @@ static EWRAM_DATA u32 gFiller_2037FE0 = 0;
 static EWRAM_DATA u32 sPlttBufferTransferPending = 0;
 EWRAM_DATA u8 gPaletteDecompressionBuffer[0x400] = {0};
 
-extern const u16 *const gUnknown_08510764[];
-extern const u16 *const gUnknown_08512574[];
-extern const u16 *const gUnknown_08512E54[];
-extern const u16 *const gUnknown_08513174[];
-extern const u16 *const gUnknown_08513684[];
-extern const u16 *const gUnknown_08513894[];
-extern const u16 *const gUnknown_085143E4[];
-extern const u16 *const gUnknown_085145F4[];
-extern const u16 *const gUnknown_08514E04[];
-extern u16 *const gUnknown_08515344[];
-extern u16 *const gUnknown_08515364[];
-extern const u16 *const gUnknown_08515384[];
-extern const u16 *const gUnknown_085153B4[];
-extern const u16 *const gUnknown_085153E4[];
-extern const u16 *const gUnknown_085153F4[];
-extern  u16 *const gUnknown_08515804[];
-extern const u16 *const gUnknown_08515824[];
-extern const u16 *const gUnknown_08515964[];
-extern const u16 *const gUnknown_08515D8C[];
-extern  u16 *const gUnknown_085161BC[];
-extern const u16 *const gUnknown_085161DC[];
-extern const u16 *const gUnknown_085164FC[];
-extern const u16 *const gUnknown_0851680C[];
-extern const u16 *const gUnknown_08516B1C[];
-extern const u16 *const gUnknown_08516D2C[];
-extern const u16 *const gUnknown_08516E3C[];
-extern const u16 *const gUnknown_08517A44[];
-extern const u16 *const gUnknown_08517A50[];
-extern const u16 *const gUnknown_08517BFC[];
-extern const u16 *const gUnknown_08517C0C[];
-extern const u16 *const gUnknown_08518034[];
-extern const u16 *const gUnknown_0851829C[];
-extern const u16 *const gUnknown_085202C4[];
-extern const u16 *const gUnknown_08524864[];
-extern const u16 *const gUnknown_08524870[];
-
-extern const u16 gUnknown_08D85640[];
-extern const u16 gUnknown_08D85660[];
-extern const u16 gUnknown_08D85680[];
-extern const u16 gUnknown_08D856A0[];
-
-static const u16 *const gUnknown_0852487C[] = {
-    gUnknown_08D85640,
-    gUnknown_08D85660,
-    gUnknown_08D85680,
-    gUnknown_08D856A0,
-};
-
 static const struct PaletteStructTemplate gDummyPaletteStructTemplate = {
     .uid = 0xFFFF,
     .pst_field_B_5 = 1
@@ -131,801 +75,6 @@ static const u8 gUnknown_0852489C[] = {
     31, 31
 };
 
-// tileset
-
-IWRAM_DATA u8 sTilesetDMA3TransferBufferSize;
-IWRAM_DATA u16 sPrimaryTilesetCBCounter;
-IWRAM_DATA u16 sPrimaryTilesetCBBufferSize;
-IWRAM_DATA u16 sSecondaryTilesetCBCounter;
-IWRAM_DATA u16 sSecondaryTilesetCBBufferSize;
-IWRAM_DATA void (*sPrimaryTilesetCB)(u16);
-IWRAM_DATA void (*sSecondaryTilesetCB)(u16);
-
-static void sub_80A0954(void)
-{
-    sTilesetDMA3TransferBufferSize = 0;
-    CpuFill32(0, sTilesetDMA3TransferBuffer, sizeof sTilesetDMA3TransferBuffer);
-}
-
-static void sub_80A0980(const u16 *a0, u16 *a1, u16 a2)
-{
-    if (sTilesetDMA3TransferBufferSize < 20)
-    {
-        sTilesetDMA3TransferBuffer[sTilesetDMA3TransferBufferSize].src = a0;
-        sTilesetDMA3TransferBuffer[sTilesetDMA3TransferBufferSize].dest = a1;
-        sTilesetDMA3TransferBuffer[sTilesetDMA3TransferBufferSize].size = a2;
-        sTilesetDMA3TransferBufferSize ++;
-    }
-}
-
-void sub_80A09D0(void)
-{
-    int i;
-
-    for (i = 0; i < sTilesetDMA3TransferBufferSize; i ++)
-    {
-        DmaCopy16(3, sTilesetDMA3TransferBuffer[i].src, sTilesetDMA3TransferBuffer[i].dest, sTilesetDMA3TransferBuffer[i].size);
-    }
-    sTilesetDMA3TransferBufferSize = 0;
-}
-
-void cur_mapheader_run_tileset_funcs_after_some_cpuset(void)
-{
-    sub_80A0954();
-    cur_mapheader_run_tileset1_func();
-    cur_mapheader_run_tileset2_func();
-}
-
-void sub_80A0A2C(void)
-{
-    cur_mapheader_run_tileset2_func();
-}
-
-void sub_80A0A38(void)
-{
-    sub_80A0954();
-    if (++sPrimaryTilesetCBCounter >= sPrimaryTilesetCBBufferSize)
-        sPrimaryTilesetCBCounter = 0;
-    if (++sSecondaryTilesetCBCounter >= sSecondaryTilesetCBBufferSize)
-        sSecondaryTilesetCBCounter = 0;
-    if (sPrimaryTilesetCB)
-        sPrimaryTilesetCB(sPrimaryTilesetCBCounter);
-    if (sSecondaryTilesetCB)
-        sSecondaryTilesetCB(sSecondaryTilesetCBCounter);
-}
-
-static void cur_mapheader_run_tileset1_func(void)
-{
-    sPrimaryTilesetCBCounter = 0;
-    sPrimaryTilesetCBBufferSize = 0;
-    sPrimaryTilesetCB = NULL;
-    if (gMapHeader.mapData->primaryTileset && gMapHeader.mapData->primaryTileset->callback)
-        gMapHeader.mapData->primaryTileset->callback();
-}
-
-static void cur_mapheader_run_tileset2_func(void)
-{
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = 0;
-    sSecondaryTilesetCB = NULL;
-    if (gMapHeader.mapData->secondaryTileset && gMapHeader.mapData->secondaryTileset->callback)
-        gMapHeader.mapData->secondaryTileset->callback();
-}
-
-void TilesetCb_General(void)
-{
-    static void sub_80A0B70(u16);
-
-    sPrimaryTilesetCBCounter = 0;
-    sPrimaryTilesetCBBufferSize = 0x100;
-    sPrimaryTilesetCB = sub_80A0B70;
-}
-
-void TilesetCb_InsideBuilding(void)
-{
-    static void sub_80A0BB4(u16);
-
-    sPrimaryTilesetCBCounter = 0;
-    sPrimaryTilesetCBBufferSize = 0x100;
-    sPrimaryTilesetCB = sub_80A0BB4;
-}
-
-static void sub_80A0B70(u16 timer)
-{
-    static void sub_80A0BCC(u16);
-    static void sub_80A0BF4(u16);
-    static void sub_80A0C1C(u16);
-    static void sub_80A0C44(u16);
-    static void sub_80A12AC(u16);
-
-    if ((timer & 0x0F) == 0)
-        sub_80A0BCC(timer >> 4);
-    if ((timer & 0x0F) == 1)
-        sub_80A0BF4(timer >> 4);
-    if ((timer & 0x0F) == 2)
-        sub_80A0C1C(timer >> 4);
-    if ((timer & 0x0F) == 3)
-        sub_80A0C44(timer >> 4);
-    if ((timer & 0x0F) == 4)
-        sub_80A12AC(timer >> 4);
-}
-
-static void sub_80A0BB4(u16 timer)
-{
-    static void sub_80A1688(u16);
-
-    if ((timer & 0x7) == 0)
-        sub_80A1688(timer >> 3);
-}
-
-static void sub_80A0BCC(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08510764[idx], (u16 *)(BG_VRAM + 0x3F80), 0x80);
-}
-
-static void sub_80A0BF4(u16 timer)
-{
-    u8 idx;
-
-    idx = timer % 8;
-    sub_80A0980(gUnknown_08512574[idx], (u16 *)(BG_VRAM + 0x3600), 0x3C0);
-}
-
-static void sub_80A0C1C(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 8;
-    sub_80A0980(gUnknown_08512E54[idx], (u16 *)(BG_VRAM + 0x3a00), 0x140);
-}
-
-static void sub_80A0C44(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08513174[idx], (u16 *)(BG_VRAM + 0x3e00), 0xc0);
-}
-
-void TilesetCb_Petalburg(void)
-{
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = NULL;
-}
-
-void TilesetCb_Rustboro(void)
-{
-    static void sub_80A103C(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A103C;
-}
-
-void TilesetCb_Dewford(void)
-{
-    static void sub_80A10B8(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A10B8;
-}
-
-void TilesetCb_Slateport(void)
-{
-    static void sub_80A10D0(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A10D0;
-}
-
-void TilesetCb_Mauville(void)
-{
-    static void sub_80A10E8(u16);
-
-    sSecondaryTilesetCBCounter = sPrimaryTilesetCBCounter;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A10E8;
-}
-
-void TilesetCb_Lavaridge(void)
-{
-    static void sub_80A115C(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A115C;
-}
-
-void TilesetCb_Fallarbor(void)
-{
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = NULL;
-}
-
-void TilesetCb_Fortree(void)
-{
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = NULL;
-}
-
-void TilesetCb_Lilycove(void)
-{
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = NULL;
-}
-
-void TilesetCb_Mossdeep(void)
-{
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = NULL;
-}
-
-void TilesetCb_EverGrande(void)
-{
-    static void sub_80A1188(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A1188;
-}
-
-void TilesetCb_Pacifidlog(void)
-{
-    static void sub_80A11FC(u16);
-
-    sSecondaryTilesetCBCounter = sPrimaryTilesetCBCounter;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A11FC;
-}
-
-void TilesetCb_Sootopolis(void)
-{
-    static void sub_80A122C(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A122C;
-}
-
-void TilesetCb_BattleFrontierOutsideWest(void)
-{
-    static void sub_80A127C(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A127C;
-}
-
-void TilesetCb_BattleFrontierOutsideEast(void)
-{
-    static void sub_80A1294(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A1294;
-}
-
-void TilesetCb_Underwater(void)
-{
-    static void sub_80A1244(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = 128;
-    sSecondaryTilesetCB = sub_80A1244;
-}
-
-void TilesetCb_SootopolisGym(void)
-{
-    static void sub_80A15D8(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = 240;
-    sSecondaryTilesetCB = sub_80A15D8;
-}
-
-void TilesetCb_Cave(void)
-{
-    static void sub_80A1260(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A1260;
-}
-
-void TilesetCb_EliteFour(void)
-{
-    static void sub_80A15F0(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = 128;
-    sSecondaryTilesetCB = sub_80A15F0;
-}
-
-void TilesetCb_MauvilleGym(void)
-{
-    static void sub_80A15C0(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A15C0;
-}
-
-void TilesetCb_BikeShop(void)
-{
-    static void sub_80A161C(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A161C;
-}
-
-void TilesetCb_BattlePyramid(void)
-{
-    static void sub_80A1634(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A1634;
-}
-
-void TilesetCb_BattleDome(void)
-{
-    static void sub_80A1658(u16);
-
-    sSecondaryTilesetCBCounter = 0;
-    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
-    sSecondaryTilesetCB = sub_80A1658;
-}
-
-static void sub_80A103C(u16 timer)
-{
-    static void sub_80A1434(u16, u8);
-    static void sub_80A1470(u16);
-
-    if ((timer & 0x07) == 0)
-    {
-        sub_80A1434(timer >> 3, 0);
-        sub_80A1470(timer >> 3);
-    }
-    if ((timer & 0x07) == 1)
-        sub_80A1434(timer >> 3, 1);
-    if ((timer & 0x07) == 2)
-        sub_80A1434(timer >> 3, 2);
-    if ((timer & 0x07) == 3)
-        sub_80A1434(timer >> 3, 3);
-    if ((timer & 0x07) == 4)
-        sub_80A1434(timer >> 3, 4);
-    if ((timer & 0x07) == 5)
-        sub_80A1434(timer >> 3, 5);
-    if ((timer & 0x07) == 6)
-        sub_80A1434(timer >> 3, 6);
-    if ((timer & 0x07) == 7)
-        sub_80A1434(timer >> 3, 7);
-}
-
-static void sub_80A10B8(u16 timer)
-{
-    static void sub_80A1520(u16);
-
-    if ((timer & 7) == 0)
-        sub_80A1520(timer >> 3);
-}
-
-static void sub_80A10D0(u16 timer)
-{
-    static void sub_80A1598(u16);
-
-    if ((timer & 15) == 0)
-        sub_80A1598(timer >> 4);
-}
-
-static void sub_80A10E8(u16 timer)
-{
-    static void sub_80A1394(u16, u8);
-
-    if ((timer & 0x07) == 0)
-        sub_80A1394(timer >> 3, 0);
-    if ((timer & 0x07) == 1)
-        sub_80A1394(timer >> 3, 1);
-    if ((timer & 0x07) == 2)
-        sub_80A1394(timer >> 3, 2);
-    if ((timer & 0x07) == 3)
-        sub_80A1394(timer >> 3, 3);
-    if ((timer & 0x07) == 4)
-        sub_80A1394(timer >> 3, 4);
-    if ((timer & 0x07) == 5)
-        sub_80A1394(timer >> 3, 5);
-    if ((timer & 0x07) == 6)
-        sub_80A1394(timer >> 3, 6);
-    if ((timer & 0x07) == 7)
-        sub_80A1394(timer >> 3, 7);
-}
-
-static void sub_80A115C(u16 timer)
-{
-    static void sub_80A12D4(u8);
-    static void sub_80A1498(u16);
-
-    if ((timer & 0x0F) == 0)
-        sub_80A12D4(timer >> 4);
-    if ((timer & 0x0F) == 1)
-        sub_80A1498(timer >> 4);
-}
-
-static void sub_80A1188(u16 timer)
-{
-    static void sub_80A14C0(u16, u8);
-
-    if ((timer & 0x07) == 0)
-        sub_80A14C0(timer >> 3, 0);
-    if ((timer & 0x07) == 1)
-        sub_80A14C0(timer >> 3, 1);
-    if ((timer & 0x07) == 2)
-        sub_80A14C0(timer >> 3, 2);
-    if ((timer & 0x07) == 3)
-        sub_80A14C0(timer >> 3, 3);
-    if ((timer & 0x07) == 4)
-        sub_80A14C0(timer >> 3, 4);
-    if ((timer & 0x07) == 5)
-        sub_80A14C0(timer >> 3, 5);
-    if ((timer & 0x07) == 6)
-        sub_80A14C0(timer >> 3, 6);
-    if ((timer & 0x07) == 7)
-        sub_80A14C0(timer >> 3, 7);
-}
-
-static void sub_80A11FC(u16 timer)
-{
-    static void sub_80A131C(u8);
-    static void sub_80A136C(u8);
-
-    if ((timer & 0x0F) == 0)
-        sub_80A131C(timer >> 4);
-    if ((timer & 0x0F) == 1)
-        sub_80A136C(timer >> 4);
-}
-
-static void sub_80A122C(u16 timer)
-{
-    static void sub_80A1798(u16);
-
-    if ((timer & 0x0F) == 0)
-        sub_80A1798(timer >> 4);
-}
-
-static void sub_80A1244(u16 timer)
-{
-    static void sub_80A1344(u8);
-
-    if ((timer & 0x0F) == 0)
-        sub_80A1344(timer >> 4);
-}
-
-static void sub_80A1260(u16 timer)
-{
-    static void sub_80A14F8(u16);
-
-    if ((timer & 0x0F) == 1)
-        sub_80A14F8(timer >> 4);
-}
-
-static void sub_80A127C(u16 timer)
-{
-    static void sub_80A1548(u16);
-
-    if ((timer & 0x07) == 0)
-        sub_80A1548(timer >> 3);
-}
-
-static void sub_80A1294(u16 timer)
-{
-    static void sub_80A1570(u16);
-
-    if ((timer & 0x07) == 0)
-        sub_80A1570(timer >> 3);
-}
-
-static void sub_80A12AC(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08513684[idx], (u16 *)(BG_VRAM + 0x3c00), 0x140);
-}
-
-static void sub_80A12D4(u8 timer)
-{
-    u8 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08513894[idx], (u16 *)(BG_VRAM + 0x6400), 0x80);
-
-    idx = (timer + 2) % 4;
-    sub_80A0980(gUnknown_08513894[idx], (u16 *)(BG_VRAM + 0x6480), 0x80);
-}
-
-static void sub_80A131C(u8 timer)
-{
-    u8 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_085143E4[idx], (u16 *)(BG_VRAM + 0x7a00), 0x3C0);
-}
-
-static void sub_80A1344(u8 timer)
-{
-    u8 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_085145F4[idx], (u16 *)(BG_VRAM + 0x7e00), 0x80);
-}
-
-static void sub_80A136C(u8 timer)
-{
-    u8 idx;
-
-    idx = timer % 8;
-    sub_80A0980(gUnknown_08514E04[idx], (u16 *)(BG_VRAM + 0x7e00), 0x100);
-}
-
-static void sub_80A1394(u16 timer_div, u8 timer_mod)
-{
-    timer_div -= timer_mod;
-    if (timer_div < 12) // almost certainly a typo
-    {
-        timer_div %= 12;
-        sub_80A0980(gUnknown_08515384[timer_div], gUnknown_08515344[timer_mod], 0x80);
-        sub_80A0980(gUnknown_085153B4[timer_div], gUnknown_08515364[timer_mod], 0x80);
-    }
-    else
-    {
-        timer_div %= 4;
-        sub_80A0980(gUnknown_085153E4[timer_div], gUnknown_08515344[timer_mod], 0x80);
-        sub_80A0980(gUnknown_085153F4[timer_div], gUnknown_08515364[timer_mod], 0x80);
-    }
-}
-
-static void sub_80A1434(u16 timer_div, u8 timer_mod)
-{
-    timer_div -= timer_mod;
-    timer_div %= 8;
-    if (gUnknown_08515824[timer_div])
-        sub_80A0980(gUnknown_08515824[timer_div], gUnknown_08515804[timer_mod], 0x80);
-}
-
-static void sub_80A1470(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 2;
-    sub_80A0980(gUnknown_08515964[idx], (u16 *)(BG_VRAM + 0x7800), 0x80);
-}
-
-static void sub_80A1498(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08515D8C[idx], (u16 *)(BG_VRAM + 0x5400), 0x80);
-}
-
-static void sub_80A14C0(u16 timer_div, u8 timer_mod)
-{
-    timer_div -= timer_mod;
-    timer_div %= 8;
-
-    sub_80A0980(gUnknown_085161DC[timer_div], gUnknown_085161BC[timer_mod], 0x80);
-}
-
-static void sub_80A14F8(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08515D8C[idx], (u16 *)(BG_VRAM + 0x7400), 0x80);
-}
-
-static void sub_80A1520(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_085164FC[idx], (u16 *)(BG_VRAM + 0x5540), 0xC0);
-}
-
-static void sub_80A1548(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_0851680C[idx], (u16 *)(BG_VRAM + 0x5b40), 0xC0);
-}
-
-static void sub_80A1570(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08516B1C[idx], (u16 *)(BG_VRAM + 0x5b40), 0xC0);
-}
-
-static void sub_80A1598(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08516D2C[idx], (u16 *)(BG_VRAM + 0x5c00), 0x80);
-}
-
-static void sub_80A15C0(u16 timer)
-{
-    static void sub_80A1748(u16);
-
-    if ((timer & 1) == 0)
-        sub_80A1748(timer >> 1);
-}
-
-static void sub_80A15D8(u16 timer)
-{
-    static void sub_80A16B0(u16);
-
-    if ((timer & 7) == 0)
-        sub_80A16B0(timer >> 3);
-}
-
-static void sub_80A15F0(u16 timer)
-{
-    static void sub_80A1720(u16);
-    static void sub_80A16F8(u16);
-
-    if ((timer & 0x3f) == 1)
-        sub_80A1720(timer >> 6);
-    if ((timer & 0x07) == 1)
-        sub_80A16F8(timer >> 3);
-}
-static void sub_80A161C(u16 timer)
-{
-    static void sub_80A1770(u16);
-
-    if ((timer & 3) == 0)
-        sub_80A1770(timer >> 2);
-}
-
-static void sub_80A1634(u16 timer)
-{
-    static void sub_80A17C0(u16);
-    static void sub_80A17EC(u16);
-
-    if ((timer & 7) == 0)
-    {
-        sub_80A17C0(timer >> 3);
-        sub_80A17EC(timer >> 3);
-    }
-}
-
-static void sub_80A1658(u16 timer)
-{
-    static void sub_80A1818(u16);
-
-    if ((timer & 3) == 0)
-        sub_80A1818(timer >> 2);
-}
-
-static void sub_80A1670(u16 timer)
-{
-    static void sub_80A1884(u16);
-
-    if ((timer & 3) == 0)
-        sub_80A1884(timer >> 2);
-}
-
-static void sub_80A1688(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 2;
-    sub_80A0980(gUnknown_08516E3C[idx], (u16 *)(BG_VRAM + 0x3e00), 0x80);
-}
-
-static void sub_80A16B0(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 3;
-    sub_80A0980(gUnknown_08517A44[idx], (u16 *)(BG_VRAM + 0x7e00), 0x180);
-    sub_80A0980(gUnknown_08517A50[idx], (u16 *)(BG_VRAM + 0x7a00), 0x280);
-}
-
-static void sub_80A16F8(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 4;
-    sub_80A0980(gUnknown_08517BFC[idx], (u16 *)(BG_VRAM + 0x7f00), 0x20);
-}
-
-static void sub_80A1720(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 2;
-    sub_80A0980(gUnknown_08517C0C[idx], (u16 *)(BG_VRAM + 0x7c00), 0x80);
-}
-
-static void sub_80A1748(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 2;
-    sub_80A0980(gUnknown_08518034[idx], (u16 *)(BG_VRAM + 0x5200), 0x200);
-}
-
-static void sub_80A1770(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 2;
-    sub_80A0980(gUnknown_0851829C[idx], (u16 *)(BG_VRAM + 0x7e00), 0x120);
-}
-
-static void sub_80A1798(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 8;
-    sub_80A0980(gUnknown_085202C4[idx], (u16 *)(BG_VRAM + 0x5e00), 0xc00);
-}
-
-static void sub_80A17C0(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 3;
-    sub_80A0980(gUnknown_08524864[idx], (u16 *)(BG_VRAM + 0x52e0), 0x100);
-}
-
-static void sub_80A17EC(u16 timer)
-{
-    u16 idx;
-
-    idx = timer % 3;
-    sub_80A0980(gUnknown_08524870[idx], (u16 *)(BG_VRAM + 0x50e0), 0x100);
-}
-
-// palette
-
-static void sub_80A1818(u16 a1)
-{
-    CpuCopy16(gUnknown_0852487C[a1 & 0x3], gPlttBufferUnfaded + 0x80, 32);
-    BlendPalette(0x80, 0x10, gPaletteFade.y, gPaletteFade.blendColor & 0x7FFF);
-    if ((u8)FindTaskIdByFunc(sub_8149DFC) != 0xFF )
-    {
-        sSecondaryTilesetCB = sub_80A1670;
-        sSecondaryTilesetCBBufferSize = 0x20;
-    }
-}
-
-static void sub_80A1884(u16 a1)
-{
-    CpuCopy16(gUnknown_0852487C[a1 & 0x3], gPlttBufferUnfaded + 0x80, 32);
-    if ((u8)FindTaskIdByFunc(sub_8149DFC) == 0xFF )
-    {
-        BlendPalette(0x80, 0x10, gPaletteFade.y, gPaletteFade.blendColor & 0x7FFF);
-        if (!--sSecondaryTilesetCBBufferSize)
-            sSecondaryTilesetCB = NULL;
-    }
-}
-
 void LoadCompressedPalette(const void *src, u16 offset, u16 size)
 {
     LZDecompressWram(src, gPaletteDecompressionBuffer);
diff --git a/src/tileset_anims.c b/src/tileset_anims.c
new file mode 100644
index 000000000..5eb470a07
--- /dev/null
+++ b/src/tileset_anims.c
@@ -0,0 +1,865 @@
+
+// Includes
+#include "global.h"
+#include "palette.h"
+#include "blend_palette.h"
+#include "battle.h"
+#include "task.h"
+
+// Static type declarations
+
+// Static RAM declarations
+
+static EWRAM_DATA struct {
+    const u16 *src;
+    u16 *dest;
+    u16 size;
+} sTilesetDMA3TransferBuffer[20] = {0};
+
+static u8 sTilesetDMA3TransferBufferSize;
+static u16 sPrimaryTilesetCBCounter;
+static u16 sPrimaryTilesetCBBufferSize;
+static u16 sSecondaryTilesetCBCounter;
+static u16 sSecondaryTilesetCBBufferSize;
+static void (*sPrimaryTilesetCB)(u16);
+static void (*sSecondaryTilesetCB)(u16);
+
+// Static ROM declarations
+
+static void cur_mapheader_run_tileset1_func(void);
+static void cur_mapheader_run_tileset2_func(void);
+
+// .rodata
+
+extern const u16 *const gUnknown_08510764[];
+extern const u16 *const gUnknown_08512574[];
+extern const u16 *const gUnknown_08512E54[];
+extern const u16 *const gUnknown_08513174[];
+extern const u16 *const gUnknown_08513684[];
+extern const u16 *const gUnknown_08513894[];
+extern const u16 *const gUnknown_085143E4[];
+extern const u16 *const gUnknown_085145F4[];
+extern const u16 *const gUnknown_08514E04[];
+extern u16 *const gUnknown_08515344[];
+extern u16 *const gUnknown_08515364[];
+extern const u16 *const gUnknown_08515384[];
+extern const u16 *const gUnknown_085153B4[];
+extern const u16 *const gUnknown_085153E4[];
+extern const u16 *const gUnknown_085153F4[];
+extern  u16 *const gUnknown_08515804[];
+extern const u16 *const gUnknown_08515824[];
+extern const u16 *const gUnknown_08515964[];
+extern const u16 *const gUnknown_08515D8C[];
+extern  u16 *const gUnknown_085161BC[];
+extern const u16 *const gUnknown_085161DC[];
+extern const u16 *const gUnknown_085164FC[];
+extern const u16 *const gUnknown_0851680C[];
+extern const u16 *const gUnknown_08516B1C[];
+extern const u16 *const gUnknown_08516D2C[];
+extern const u16 *const gUnknown_08516E3C[];
+extern const u16 *const gUnknown_08517A44[];
+extern const u16 *const gUnknown_08517A50[];
+extern const u16 *const gUnknown_08517BFC[];
+extern const u16 *const gUnknown_08517C0C[];
+extern const u16 *const gUnknown_08518034[];
+extern const u16 *const gUnknown_0851829C[];
+extern const u16 *const gUnknown_085202C4[];
+extern const u16 *const gUnknown_08524864[];
+extern const u16 *const gUnknown_08524870[];
+
+extern const u16 gUnknown_08D85640[];
+extern const u16 gUnknown_08D85660[];
+extern const u16 gUnknown_08D85680[];
+extern const u16 gUnknown_08D856A0[];
+
+static const u16 *const gUnknown_0852487C[] = {
+    gUnknown_08D85640,
+    gUnknown_08D85660,
+    gUnknown_08D85680,
+    gUnknown_08D856A0,
+};
+
+// .text
+
+static void sub_80A0954(void)
+{
+    sTilesetDMA3TransferBufferSize = 0;
+    CpuFill32(0, sTilesetDMA3TransferBuffer, sizeof sTilesetDMA3TransferBuffer);
+}
+
+static void sub_80A0980(const u16 *a0, u16 *a1, u16 a2)
+{
+    if (sTilesetDMA3TransferBufferSize < 20)
+    {
+        sTilesetDMA3TransferBuffer[sTilesetDMA3TransferBufferSize].src = a0;
+        sTilesetDMA3TransferBuffer[sTilesetDMA3TransferBufferSize].dest = a1;
+        sTilesetDMA3TransferBuffer[sTilesetDMA3TransferBufferSize].size = a2;
+        sTilesetDMA3TransferBufferSize ++;
+    }
+}
+
+void sub_80A09D0(void)
+{
+    int i;
+
+    for (i = 0; i < sTilesetDMA3TransferBufferSize; i ++)
+    {
+        DmaCopy16(3, sTilesetDMA3TransferBuffer[i].src, sTilesetDMA3TransferBuffer[i].dest, sTilesetDMA3TransferBuffer[i].size);
+    }
+    sTilesetDMA3TransferBufferSize = 0;
+}
+
+void cur_mapheader_run_tileset_funcs_after_some_cpuset(void)
+{
+    sub_80A0954();
+    cur_mapheader_run_tileset1_func();
+    cur_mapheader_run_tileset2_func();
+}
+
+void sub_80A0A2C(void)
+{
+    cur_mapheader_run_tileset2_func();
+}
+
+void sub_80A0A38(void)
+{
+    sub_80A0954();
+    if (++sPrimaryTilesetCBCounter >= sPrimaryTilesetCBBufferSize)
+        sPrimaryTilesetCBCounter = 0;
+    if (++sSecondaryTilesetCBCounter >= sSecondaryTilesetCBBufferSize)
+        sSecondaryTilesetCBCounter = 0;
+    if (sPrimaryTilesetCB)
+        sPrimaryTilesetCB(sPrimaryTilesetCBCounter);
+    if (sSecondaryTilesetCB)
+        sSecondaryTilesetCB(sSecondaryTilesetCBCounter);
+}
+
+static void cur_mapheader_run_tileset1_func(void)
+{
+    sPrimaryTilesetCBCounter = 0;
+    sPrimaryTilesetCBBufferSize = 0;
+    sPrimaryTilesetCB = NULL;
+    if (gMapHeader.mapData->primaryTileset && gMapHeader.mapData->primaryTileset->callback)
+        gMapHeader.mapData->primaryTileset->callback();
+}
+
+static void cur_mapheader_run_tileset2_func(void)
+{
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = 0;
+    sSecondaryTilesetCB = NULL;
+    if (gMapHeader.mapData->secondaryTileset && gMapHeader.mapData->secondaryTileset->callback)
+        gMapHeader.mapData->secondaryTileset->callback();
+}
+
+void TilesetCb_General(void)
+{
+    static void sub_80A0B70(u16);
+
+    sPrimaryTilesetCBCounter = 0;
+    sPrimaryTilesetCBBufferSize = 0x100;
+    sPrimaryTilesetCB = sub_80A0B70;
+}
+
+void TilesetCb_InsideBuilding(void)
+{
+    static void sub_80A0BB4(u16);
+
+    sPrimaryTilesetCBCounter = 0;
+    sPrimaryTilesetCBBufferSize = 0x100;
+    sPrimaryTilesetCB = sub_80A0BB4;
+}
+
+static void sub_80A0B70(u16 timer)
+{
+    static void sub_80A0BCC(u16);
+    static void sub_80A0BF4(u16);
+    static void sub_80A0C1C(u16);
+    static void sub_80A0C44(u16);
+    static void sub_80A12AC(u16);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A0BCC(timer >> 4);
+    if ((timer & 0x0F) == 1)
+        sub_80A0BF4(timer >> 4);
+    if ((timer & 0x0F) == 2)
+        sub_80A0C1C(timer >> 4);
+    if ((timer & 0x0F) == 3)
+        sub_80A0C44(timer >> 4);
+    if ((timer & 0x0F) == 4)
+        sub_80A12AC(timer >> 4);
+}
+
+static void sub_80A0BB4(u16 timer)
+{
+    static void sub_80A1688(u16);
+
+    if ((timer & 0x7) == 0)
+        sub_80A1688(timer >> 3);
+}
+
+static void sub_80A0BCC(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08510764[idx], (u16 *)(BG_VRAM + 0x3F80), 0x80);
+}
+
+static void sub_80A0BF4(u16 timer)
+{
+    u8 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_08512574[idx], (u16 *)(BG_VRAM + 0x3600), 0x3C0);
+}
+
+static void sub_80A0C1C(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_08512E54[idx], (u16 *)(BG_VRAM + 0x3a00), 0x140);
+}
+
+static void sub_80A0C44(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08513174[idx], (u16 *)(BG_VRAM + 0x3e00), 0xc0);
+}
+
+void TilesetCb_Petalburg(void)
+{
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = NULL;
+}
+
+void TilesetCb_Rustboro(void)
+{
+    static void sub_80A103C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A103C;
+}
+
+void TilesetCb_Dewford(void)
+{
+    static void sub_80A10B8(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A10B8;
+}
+
+void TilesetCb_Slateport(void)
+{
+    static void sub_80A10D0(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A10D0;
+}
+
+void TilesetCb_Mauville(void)
+{
+    static void sub_80A10E8(u16);
+
+    sSecondaryTilesetCBCounter = sPrimaryTilesetCBCounter;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A10E8;
+}
+
+void TilesetCb_Lavaridge(void)
+{
+    static void sub_80A115C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A115C;
+}
+
+void TilesetCb_Fallarbor(void)
+{
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = NULL;
+}
+
+void TilesetCb_Fortree(void)
+{
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = NULL;
+}
+
+void TilesetCb_Lilycove(void)
+{
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = NULL;
+}
+
+void TilesetCb_Mossdeep(void)
+{
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = NULL;
+}
+
+void TilesetCb_EverGrande(void)
+{
+    static void sub_80A1188(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1188;
+}
+
+void TilesetCb_Pacifidlog(void)
+{
+    static void sub_80A11FC(u16);
+
+    sSecondaryTilesetCBCounter = sPrimaryTilesetCBCounter;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A11FC;
+}
+
+void TilesetCb_Sootopolis(void)
+{
+    static void sub_80A122C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A122C;
+}
+
+void TilesetCb_BattleFrontierOutsideWest(void)
+{
+    static void sub_80A127C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A127C;
+}
+
+void TilesetCb_BattleFrontierOutsideEast(void)
+{
+    static void sub_80A1294(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1294;
+}
+
+void TilesetCb_Underwater(void)
+{
+    static void sub_80A1244(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = 128;
+    sSecondaryTilesetCB = sub_80A1244;
+}
+
+void TilesetCb_SootopolisGym(void)
+{
+    static void sub_80A15D8(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = 240;
+    sSecondaryTilesetCB = sub_80A15D8;
+}
+
+void TilesetCb_Cave(void)
+{
+    static void sub_80A1260(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1260;
+}
+
+void TilesetCb_EliteFour(void)
+{
+    static void sub_80A15F0(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = 128;
+    sSecondaryTilesetCB = sub_80A15F0;
+}
+
+void TilesetCb_MauvilleGym(void)
+{
+    static void sub_80A15C0(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A15C0;
+}
+
+void TilesetCb_BikeShop(void)
+{
+    static void sub_80A161C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A161C;
+}
+
+void TilesetCb_BattlePyramid(void)
+{
+    static void sub_80A1634(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1634;
+}
+
+void TilesetCb_BattleDome(void)
+{
+    static void sub_80A1658(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1658;
+}
+
+static void sub_80A103C(u16 timer)
+{
+    static void sub_80A1434(u16, u8);
+    static void sub_80A1470(u16);
+
+    if ((timer & 0x07) == 0)
+    {
+        sub_80A1434(timer >> 3, 0);
+        sub_80A1470(timer >> 3);
+    }
+    if ((timer & 0x07) == 1)
+        sub_80A1434(timer >> 3, 1);
+    if ((timer & 0x07) == 2)
+        sub_80A1434(timer >> 3, 2);
+    if ((timer & 0x07) == 3)
+        sub_80A1434(timer >> 3, 3);
+    if ((timer & 0x07) == 4)
+        sub_80A1434(timer >> 3, 4);
+    if ((timer & 0x07) == 5)
+        sub_80A1434(timer >> 3, 5);
+    if ((timer & 0x07) == 6)
+        sub_80A1434(timer >> 3, 6);
+    if ((timer & 0x07) == 7)
+        sub_80A1434(timer >> 3, 7);
+}
+
+static void sub_80A10B8(u16 timer)
+{
+    static void sub_80A1520(u16);
+
+    if ((timer & 7) == 0)
+        sub_80A1520(timer >> 3);
+}
+
+static void sub_80A10D0(u16 timer)
+{
+    static void sub_80A1598(u16);
+
+    if ((timer & 15) == 0)
+        sub_80A1598(timer >> 4);
+}
+
+static void sub_80A10E8(u16 timer)
+{
+    static void sub_80A1394(u16, u8);
+
+    if ((timer & 0x07) == 0)
+        sub_80A1394(timer >> 3, 0);
+    if ((timer & 0x07) == 1)
+        sub_80A1394(timer >> 3, 1);
+    if ((timer & 0x07) == 2)
+        sub_80A1394(timer >> 3, 2);
+    if ((timer & 0x07) == 3)
+        sub_80A1394(timer >> 3, 3);
+    if ((timer & 0x07) == 4)
+        sub_80A1394(timer >> 3, 4);
+    if ((timer & 0x07) == 5)
+        sub_80A1394(timer >> 3, 5);
+    if ((timer & 0x07) == 6)
+        sub_80A1394(timer >> 3, 6);
+    if ((timer & 0x07) == 7)
+        sub_80A1394(timer >> 3, 7);
+}
+
+static void sub_80A115C(u16 timer)
+{
+    static void sub_80A12D4(u8);
+    static void sub_80A1498(u16);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A12D4(timer >> 4);
+    if ((timer & 0x0F) == 1)
+        sub_80A1498(timer >> 4);
+}
+
+static void sub_80A1188(u16 timer)
+{
+    static void sub_80A14C0(u16, u8);
+
+    if ((timer & 0x07) == 0)
+        sub_80A14C0(timer >> 3, 0);
+    if ((timer & 0x07) == 1)
+        sub_80A14C0(timer >> 3, 1);
+    if ((timer & 0x07) == 2)
+        sub_80A14C0(timer >> 3, 2);
+    if ((timer & 0x07) == 3)
+        sub_80A14C0(timer >> 3, 3);
+    if ((timer & 0x07) == 4)
+        sub_80A14C0(timer >> 3, 4);
+    if ((timer & 0x07) == 5)
+        sub_80A14C0(timer >> 3, 5);
+    if ((timer & 0x07) == 6)
+        sub_80A14C0(timer >> 3, 6);
+    if ((timer & 0x07) == 7)
+        sub_80A14C0(timer >> 3, 7);
+}
+
+static void sub_80A11FC(u16 timer)
+{
+    static void sub_80A131C(u8);
+    static void sub_80A136C(u8);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A131C(timer >> 4);
+    if ((timer & 0x0F) == 1)
+        sub_80A136C(timer >> 4);
+}
+
+static void sub_80A122C(u16 timer)
+{
+    static void sub_80A1798(u16);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A1798(timer >> 4);
+}
+
+static void sub_80A1244(u16 timer)
+{
+    static void sub_80A1344(u8);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A1344(timer >> 4);
+}
+
+static void sub_80A1260(u16 timer)
+{
+    static void sub_80A14F8(u16);
+
+    if ((timer & 0x0F) == 1)
+        sub_80A14F8(timer >> 4);
+}
+
+static void sub_80A127C(u16 timer)
+{
+    static void sub_80A1548(u16);
+
+    if ((timer & 0x07) == 0)
+        sub_80A1548(timer >> 3);
+}
+
+static void sub_80A1294(u16 timer)
+{
+    static void sub_80A1570(u16);
+
+    if ((timer & 0x07) == 0)
+        sub_80A1570(timer >> 3);
+}
+
+static void sub_80A12AC(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08513684[idx], (u16 *)(BG_VRAM + 0x3c00), 0x140);
+}
+
+static void sub_80A12D4(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08513894[idx], (u16 *)(BG_VRAM + 0x6400), 0x80);
+
+    idx = (timer + 2) % 4;
+    sub_80A0980(gUnknown_08513894[idx], (u16 *)(BG_VRAM + 0x6480), 0x80);
+}
+
+static void sub_80A131C(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_085143E4[idx], (u16 *)(BG_VRAM + 0x7a00), 0x3C0);
+}
+
+static void sub_80A1344(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_085145F4[idx], (u16 *)(BG_VRAM + 0x7e00), 0x80);
+}
+
+static void sub_80A136C(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_08514E04[idx], (u16 *)(BG_VRAM + 0x7e00), 0x100);
+}
+
+static void sub_80A1394(u16 timer_div, u8 timer_mod)
+{
+    timer_div -= timer_mod;
+    if (timer_div < 12) // almost certainly a typo
+    {
+        timer_div %= 12;
+        sub_80A0980(gUnknown_08515384[timer_div], gUnknown_08515344[timer_mod], 0x80);
+        sub_80A0980(gUnknown_085153B4[timer_div], gUnknown_08515364[timer_mod], 0x80);
+    }
+    else
+    {
+        timer_div %= 4;
+        sub_80A0980(gUnknown_085153E4[timer_div], gUnknown_08515344[timer_mod], 0x80);
+        sub_80A0980(gUnknown_085153F4[timer_div], gUnknown_08515364[timer_mod], 0x80);
+    }
+}
+
+static void sub_80A1434(u16 timer_div, u8 timer_mod)
+{
+    timer_div -= timer_mod;
+    timer_div %= 8;
+    if (gUnknown_08515824[timer_div])
+        sub_80A0980(gUnknown_08515824[timer_div], gUnknown_08515804[timer_mod], 0x80);
+}
+
+static void sub_80A1470(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08515964[idx], (u16 *)(BG_VRAM + 0x7800), 0x80);
+}
+
+static void sub_80A1498(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08515D8C[idx], (u16 *)(BG_VRAM + 0x5400), 0x80);
+}
+
+static void sub_80A14C0(u16 timer_div, u8 timer_mod)
+{
+    timer_div -= timer_mod;
+    timer_div %= 8;
+
+    sub_80A0980(gUnknown_085161DC[timer_div], gUnknown_085161BC[timer_mod], 0x80);
+}
+
+static void sub_80A14F8(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08515D8C[idx], (u16 *)(BG_VRAM + 0x7400), 0x80);
+}
+
+static void sub_80A1520(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_085164FC[idx], (u16 *)(BG_VRAM + 0x5540), 0xC0);
+}
+
+static void sub_80A1548(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_0851680C[idx], (u16 *)(BG_VRAM + 0x5b40), 0xC0);
+}
+
+static void sub_80A1570(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08516B1C[idx], (u16 *)(BG_VRAM + 0x5b40), 0xC0);
+}
+
+static void sub_80A1598(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08516D2C[idx], (u16 *)(BG_VRAM + 0x5c00), 0x80);
+}
+
+static void sub_80A15C0(u16 timer)
+{
+    static void sub_80A1748(u16);
+
+    if ((timer & 1) == 0)
+        sub_80A1748(timer >> 1);
+}
+
+static void sub_80A15D8(u16 timer)
+{
+    static void sub_80A16B0(u16);
+
+    if ((timer & 7) == 0)
+        sub_80A16B0(timer >> 3);
+}
+
+static void sub_80A15F0(u16 timer)
+{
+    static void sub_80A1720(u16);
+    static void sub_80A16F8(u16);
+
+    if ((timer & 0x3f) == 1)
+        sub_80A1720(timer >> 6);
+    if ((timer & 0x07) == 1)
+        sub_80A16F8(timer >> 3);
+}
+static void sub_80A161C(u16 timer)
+{
+    static void sub_80A1770(u16);
+
+    if ((timer & 3) == 0)
+        sub_80A1770(timer >> 2);
+}
+
+static void sub_80A1634(u16 timer)
+{
+    static void sub_80A17C0(u16);
+    static void sub_80A17EC(u16);
+
+    if ((timer & 7) == 0)
+    {
+        sub_80A17C0(timer >> 3);
+        sub_80A17EC(timer >> 3);
+    }
+}
+
+static void sub_80A1658(u16 timer)
+{
+    static void sub_80A1818(u16);
+
+    if ((timer & 3) == 0)
+        sub_80A1818(timer >> 2);
+}
+
+static void sub_80A1670(u16 timer)
+{
+    static void sub_80A1884(u16);
+
+    if ((timer & 3) == 0)
+        sub_80A1884(timer >> 2);
+}
+
+static void sub_80A1688(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08516E3C[idx], (u16 *)(BG_VRAM + 0x3e00), 0x80);
+}
+
+static void sub_80A16B0(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 3;
+    sub_80A0980(gUnknown_08517A44[idx], (u16 *)(BG_VRAM + 0x7e00), 0x180);
+    sub_80A0980(gUnknown_08517A50[idx], (u16 *)(BG_VRAM + 0x7a00), 0x280);
+}
+
+static void sub_80A16F8(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08517BFC[idx], (u16 *)(BG_VRAM + 0x7f00), 0x20);
+}
+
+static void sub_80A1720(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08517C0C[idx], (u16 *)(BG_VRAM + 0x7c00), 0x80);
+}
+
+static void sub_80A1748(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08518034[idx], (u16 *)(BG_VRAM + 0x5200), 0x200);
+}
+
+static void sub_80A1770(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_0851829C[idx], (u16 *)(BG_VRAM + 0x7e00), 0x120);
+}
+
+static void sub_80A1798(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_085202C4[idx], (u16 *)(BG_VRAM + 0x5e00), 0xc00);
+}
+
+static void sub_80A17C0(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 3;
+    sub_80A0980(gUnknown_08524864[idx], (u16 *)(BG_VRAM + 0x52e0), 0x100);
+}
+
+static void sub_80A17EC(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 3;
+    sub_80A0980(gUnknown_08524870[idx], (u16 *)(BG_VRAM + 0x50e0), 0x100);
+}
+
+static void sub_80A1818(u16 a1)
+{
+    CpuCopy16(gUnknown_0852487C[a1 & 0x3], gPlttBufferUnfaded + 0x80, 32);
+    BlendPalette(0x80, 0x10, gPaletteFade.y, gPaletteFade.blendColor & 0x7FFF);
+    if ((u8)FindTaskIdByFunc(sub_8149DFC) != 0xFF )
+    {
+        sSecondaryTilesetCB = sub_80A1670;
+        sSecondaryTilesetCBBufferSize = 0x20;
+    }
+}
+
+static void sub_80A1884(u16 a1)
+{
+    CpuCopy16(gUnknown_0852487C[a1 & 0x3], gPlttBufferUnfaded + 0x80, 32);
+    if ((u8)FindTaskIdByFunc(sub_8149DFC) == 0xFF )
+    {
+        BlendPalette(0x80, 0x10, gPaletteFade.y, gPaletteFade.blendColor & 0x7FFF);
+        if (!--sSecondaryTilesetCBBufferSize)
+            sSecondaryTilesetCB = NULL;
+    }
+}
diff --git a/sym_bss.txt b/sym_bss.txt
index 16f14da51..3416b67df 100644
--- a/sym_bss.txt
+++ b/sym_bss.txt
@@ -17,6 +17,7 @@ gUnknown_03000000: @ 3000000
     .include "src/field_camera.o"
     .include "src/script.o"
     .include "src/scrcmd.o"
+    .include "src/tileset_anims.o"
     .include "src/palette.o"
     .include "src/sound.o"
 
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 8549f1679..7848dcc7c 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -747,6 +747,7 @@ gUnknown_02037621: @ 2037621
 gUnknown_02037622: @ 2037622
 	.space 0x2
 
+	.include "src/tileset_anims.o"
 	.include "src/palette.o"
     .include "src/sound.o"