Decompile asm/tileset.s into src/palette.c

2 files changed, 871 insertions, 24 deletions

diff --git a/src/palette.c b/src/palette.c
index aa9a84e4c..4c09206ba 100644
--- a/src/palette.c
+++ b/src/palette.c
@@ -28,7 +28,7 @@ struct PaletteStructTemplate
 
 struct PaletteStruct
 {
-    struct PaletteStructTemplate *base;
+    const struct PaletteStructTemplate *base;
     u32 ps_field_4_0:1;
     u16 ps_field_4_1:1;
     u32 baseDestOffset:9;
@@ -48,6 +48,11 @@ extern void _call_via_r1(u32 a1, void *a2);
 
 extern void BlendPalette(u16, u16, u8, u16);
 
+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};
@@ -56,13 +61,72 @@ EWRAM_DATA u32 gFiller_2037FE0 = 0;
 EWRAM_DATA u32 sPlttBufferTransferPending = 0;
 EWRAM_DATA u8 gPaletteDecompressionBuffer[0x400] = {0};
 
-extern struct PaletteStructTemplate gDummyPaletteStructTemplate;
-extern void *gUnknown_0852487C;
-extern u8 gUnknown_0852489C[];
+extern const u16 *const gUnknown_08510764[];
+extern const u16 *const gUnknown_085112C4[];
+extern const u16 *const gUnknown_08511BCC[];
+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,
+};
 
-extern u16 gUnknown_03000F3C;
-extern void *gUnknown_03000F44;
+static const struct PaletteStructTemplate gDummyPaletteStructTemplate = {
+    .uid = 0xFFFF,
+    .pst_field_B_5 = 1
+};
+static const u8 gUnknown_0852489C[] = {
+     0,  0,  0,  0,  0,
+     5,  5,  5,  5,  5,
+    11, 11, 11, 11, 11,
+    16, 16, 16, 16, 16,
+    21, 21, 21, 21, 21,
+    27, 27, 27, 27, 27,
+    31, 31
+};
 
+void cur_mapheader_run_tileset1_func(void);
+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 *);
@@ -74,30 +138,798 @@ static u8 UpdateHardwarePaletteFade(void);
 static void UpdateBlendRegisters(void);
 static bool8 IsSoftwarePaletteFadeFinishing(void);
 
+// 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);
+
+void sub_80A0954(void)
+{
+    sTilesetDMA3TransferBufferSize = 0;
+    CpuFill32(0, sTilesetDMA3TransferBuffer, sizeof sTilesetDMA3TransferBuffer);
+}
+
+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);
+}
+
+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();
+}
+
+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)
+{
+    void sub_80A0B70(u16);
+
+    sPrimaryTilesetCBCounter = 0;
+    sPrimaryTilesetCBBufferSize = 0x100;
+    sPrimaryTilesetCB = sub_80A0B70;
+}
+
+void TilesetCb_InsideBuilding(void)
+{
+    void sub_80A0BB4(u16);
+
+    sPrimaryTilesetCBCounter = 0;
+    sPrimaryTilesetCBBufferSize = 0x100;
+    sPrimaryTilesetCB = sub_80A0BB4;
+}
+
+void sub_80A0B70(u16 timer)
+{
+    void sub_80A0BCC(u16);
+    void sub_80A0BF4(u16);
+    void sub_80A0C1C(u16);
+    void sub_80A0C44(u16);
+    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);
+}
+
+void sub_80A0BB4(u16 timer)
+{
+    void sub_80A1688(u16);
+    if ((timer & 0x7) == 0)
+        sub_80A1688(timer >> 3);
+}
+
+void sub_80A0BCC(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08510764[idx], (u16 *)(VRAM + 0x3F80), 0x80);
+}
+
+void sub_80A0BF4(u16 timer)
+{
+    u8 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_08512574[idx], (u16 *)(VRAM + 0x3600), 0x3C0);
+}
+
+void sub_80A0C1C(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_08512E54[idx], (u16 *)(VRAM + 0x3a00), 0x140);
+}
+
+void sub_80A0C44(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08513174[idx], (u16 *)(VRAM + 0x3e00), 0xc0);
+}
+
+void TilesetCb_Petalburg(void)
+{
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = NULL;
+}
+
+void TilesetCb_Rustboro(void)
+{
+    void sub_80A103C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A103C;
+}
+
+void TilesetCb_Dewford(void)
+{
+    void sub_80A10B8(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A10B8;
+}
+
+void TilesetCb_Slateport(void)
+{
+    void sub_80A10D0(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A10D0;
+}
+
+void TilesetCb_Mauville(void)
+{
+    void sub_80A10E8(u16);
+
+    sSecondaryTilesetCBCounter = sPrimaryTilesetCBCounter;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A10E8;
+}
+
+void TilesetCb_Lavaridge(void)
+{
+    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)
+{
+    void sub_80A1188(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1188;
+}
+
+void TilesetCb_Pacifidlog(void)
+{
+    void sub_80A11FC(u16);
+
+    sSecondaryTilesetCBCounter = sPrimaryTilesetCBCounter;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A11FC;
+}
+
+void TilesetCb_Sootopolis(void)
+{
+    void sub_80A122C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A122C;
+}
+
+void TilesetCb_BattleFrontierOutsideWest(void)
+{
+    void sub_80A127C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A127C;
+}
+
+void TilesetCb_BattleFrontierOutsideEast(void)
+{
+    void sub_80A1294(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1294;
+}
+
+void TilesetCb_Underwater(void)
+{
+    void sub_80A1244(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = 128;
+    sSecondaryTilesetCB = sub_80A1244;
+}
+
+void TilesetCb_SootopolisGym(void)
+{
+    void sub_80A15D8(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = 240;
+    sSecondaryTilesetCB = sub_80A15D8;
+}
+
+void TilesetCb_Cave(void)
+{
+    void sub_80A1260(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1260;
+}
+
+void TilesetCb_EliteFour(void)
+{
+    void sub_80A15F0(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = 128;
+    sSecondaryTilesetCB = sub_80A15F0;
+}
+
+void TilesetCb_MauvilleGym(void)
+{
+    void sub_80A15C0(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A15C0;
+}
+
+void TilesetCb_BikeShop(void)
+{
+    void sub_80A161C(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A161C;
+}
+
+void TilesetCb_BattlePyramid(void)
+{
+    void sub_80A1634(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1634;
+}
+
+void TilesetCb_BattleDome(void)
+{
+    void sub_80A1658(u16);
+
+    sSecondaryTilesetCBCounter = 0;
+    sSecondaryTilesetCBBufferSize = sPrimaryTilesetCBBufferSize;
+    sSecondaryTilesetCB = sub_80A1658;
+}
+
+void sub_80A103C(u16 timer)
+{
+    void sub_80A1434(u16, u8);
+    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);
+}
+
+void sub_80A10B8(u16 timer)
+{
+    void sub_80A1520(u16);
+
+    if ((timer & 7) == 0)
+        sub_80A1520(timer >> 3);
+}
+
+void sub_80A10D0(u16 timer)
+{
+    void sub_80A1598(u16);
+
+    if ((timer & 15) == 0)
+        sub_80A1598(timer >> 4);
+}
+
+void sub_80A10E8(u16 timer)
+{
+    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);
+}
+
+void sub_80A115C(u16 timer)
+{
+    void sub_80A12D4(u8);
+    void sub_80A1498(u16);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A12D4(timer >> 4);
+    if ((timer & 0x0F) == 1)
+        sub_80A1498(timer >> 4);
+}
+
+void sub_80A1188(u16 timer)
+{
+    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);
+}
+
+void sub_80A11FC(u16 timer)
+{
+    void sub_80A131C(u8);
+    void sub_80A136C(u8);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A131C(timer >> 4);
+    if ((timer & 0x0F) == 1)
+        sub_80A136C(timer >> 4);
+}
+
+void sub_80A122C(u16 timer)
+{
+    void sub_80A1798(u16);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A1798(timer >> 4);
+}
+
+void sub_80A1244(u16 timer)
+{
+    void sub_80A1344(u8);
+
+    if ((timer & 0x0F) == 0)
+        sub_80A1344(timer >> 4);
+}
+
+void sub_80A1260(u16 timer)
+{
+    void sub_80A14F8(u16);
+
+    if ((timer & 0x0F) == 1)
+        sub_80A14F8(timer >> 4);
+}
+
+void sub_80A127C(u16 timer)
+{
+    void sub_80A1548(u16);
+
+    if ((timer & 0x07) == 0)
+        sub_80A1548(timer >> 3);
+}
+
+void sub_80A1294(u16 timer)
+{
+    void sub_80A1570(u16);
+
+    if ((timer & 0x07) == 0)
+        sub_80A1570(timer >> 3);
+}
+
+void sub_80A12AC(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08513684[idx], (u16 *)(VRAM + 0x3c00), 0x140);
+}
+
+void sub_80A12D4(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08513894[idx], (u16 *)(VRAM + 0x6400), 0x80);
+
+    idx = (timer + 2) % 4;
+    sub_80A0980(gUnknown_08513894[idx], (u16 *)(VRAM + 0x6480), 0x80);
+}
+
+void sub_80A131C(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_085143E4[idx], (u16 *)(VRAM + 0x7a00), 0x3C0);
+}
+
+void sub_80A1344(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_085145F4[idx], (u16 *)(VRAM + 0x7e00), 0x80);
+}
+
+void sub_80A136C(u8 timer)
+{
+    u8 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_08514E04[idx], (u16 *)(VRAM + 0x7e00), 0x100);
+}
+
+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 &= 3;
+        sub_80A0980(gUnknown_085153E4[timer_div], gUnknown_08515344[timer_mod], 0x80);
+        sub_80A0980(gUnknown_085153F4[timer_div], gUnknown_08515364[timer_mod], 0x80);
+    }
+}
+
+void sub_80A1434(u16 timer_div, u8 timer_mod)
+{
+    timer_div -= timer_mod;
+    timer_div &= 0x7;
+    if (gUnknown_08515824[timer_div])
+        sub_80A0980(gUnknown_08515824[timer_div], gUnknown_08515804[timer_mod], 0x80);
+}
+
+void sub_80A1470(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08515964[idx], (u16 *)(VRAM + 0x7800), 0x80);
+}
+
+void sub_80A1498(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08515D8C[idx], (u16 *)(VRAM + 0x5400), 0x80);
+}
+
+void sub_80A14C0(u16 timer_div, u8 timer_mod)
+{
+    timer_div -= timer_mod;
+    timer_div &= 7;
+
+    sub_80A0980(gUnknown_085161DC[timer_div], gUnknown_085161BC[timer_mod], 0x80);
+}
+
+void sub_80A14F8(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08515D8C[idx], (u16 *)(VRAM + 0x7400), 0x80);
+}
+
+void sub_80A1520(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_085164FC[idx], (u16 *)(VRAM + 0x5540), 0xC0);
+}
+
+void sub_80A1548(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_0851680C[idx], (u16 *)(VRAM + 0x5b40), 0xC0);
+}
+
+void sub_80A1570(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08516B1C[idx], (u16 *)(VRAM + 0x5b40), 0xC0);
+}
+
+void sub_80A1598(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08516D2C[idx], (u16 *)(VRAM + 0x5c00), 0x80);
+}
+
+void sub_80A15C0(u16 timer)
+{
+    void sub_80A1748(u16);
+
+    if ((timer & 1) == 0)
+        sub_80A1748(timer >> 1);
+}
+
+void sub_80A15D8(u16 timer)
+{
+    void sub_80A16B0(u16);
+
+    if ((timer & 7) == 0)
+        sub_80A16B0(timer >> 3);
+}
+
+void sub_80A15F0(u16 timer)
+{
+    void sub_80A1720(u16);
+    void sub_80A16F8(u16);
+
+    if ((timer & 0x3f) == 1)
+        sub_80A1720(timer >> 6);
+    if ((timer & 0x07) == 1)
+        sub_80A16F8(timer >> 3);
+}
+void sub_80A161C(u16 timer)
+{
+    void sub_80A1770(u16);
+
+    if ((timer & 3) == 0)
+        sub_80A1770(timer >> 2);
+}
+
+void sub_80A1634(u16 timer)
+{
+    void sub_80A17C0(u16);
+    void sub_80A17EC(u16);
+
+    if ((timer & 7) == 0)
+    {
+        sub_80A17C0(timer >> 3);
+        sub_80A17EC(timer >> 3);
+    }
+}
+
+void sub_80A1658(u16 timer)
+{
+    void sub_80A1818(u16);
+
+    if ((timer & 3) == 0)
+        sub_80A1818(timer >> 2);
+}
+
+void sub_80A1670(u16 timer)
+{
+    void sub_80A1884(u16);
+
+    if ((timer & 3) == 0)
+        sub_80A1884(timer >> 2);
+}
+
+void sub_80A1688(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08516E3C[idx], (u16 *)(VRAM + 0x3e00), 0x80);
+}
+
+void sub_80A16B0(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 3;
+    sub_80A0980(gUnknown_08517A44[idx], (u16 *)(VRAM + 0x7e00), 0x180);
+    sub_80A0980(gUnknown_08517A50[idx], (u16 *)(VRAM + 0x7a00), 0x280);
+}
+
+void sub_80A16F8(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 4;
+    sub_80A0980(gUnknown_08517BFC[idx], (u16 *)(VRAM + 0x7f00), 0x20);
+}
+
+void sub_80A1720(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08517C0C[idx], (u16 *)(VRAM + 0x7c00), 0x80);
+}
+
+void sub_80A1748(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_08518034[idx], (u16 *)(VRAM + 0x5200), 0x200);
+}
+
+void sub_80A1770(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 2;
+    sub_80A0980(gUnknown_0851829C[idx], (u16 *)(VRAM + 0x7e00), 0x120);
+}
+
+void sub_80A1798(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 8;
+    sub_80A0980(gUnknown_085202C4[idx], (u16 *)(VRAM + 0x5e00), 0xc00);
+}
+
+void sub_80A17C0(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 3;
+    sub_80A0980(gUnknown_08524864[idx], (u16 *)(VRAM + 0x52e0), 0x100);
+}
+
+void sub_80A17EC(u16 timer)
+{
+    u16 idx;
+
+    idx = timer % 3;
+    sub_80A0980(gUnknown_08524870[idx], (u16 *)(VRAM + 0x50e0), 0x100);
+}
+
+// palette
+
 void sub_80A1818(u16 a1)
 {
-  void **v1 = &gUnknown_0852487C;
-  CpuSet(v1[a1 & 0x3], gPlttBufferUnfaded + 0x80, 0x10);
-  BlendPalette(0x80, 0x10, gPaletteFade.y, gPaletteFade.blendColor & 0x7FFF);
-  if ((u8)FindTaskIdByFunc(sub_8149DFC) != 0xFF )
-  {
-    gUnknown_03000F44 = sub_80A1670;
-    gUnknown_03000F3C = 0x20;
-  }
-  return;
+    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;
+    }
 }
 
 void sub_80A1884(u16 a1)
 {
-  void **v1 = &gUnknown_0852487C;
-  CpuSet(v1[a1 & 0x3], gPlttBufferUnfaded + 0x80, 0x10);
-  if ((u8)FindTaskIdByFunc(sub_8149DFC) == 0xFF )
-  {
-    BlendPalette(0x80, 0x10, gPaletteFade.y, gPaletteFade.blendColor & 0x7FFF);
-    if (!--gUnknown_03000F3C)
-        gUnknown_03000F44 = 0;
-  }
-  return;
+    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)
diff --git a/src/scrcmd.c b/src/scrcmd.c
new file mode 100644
index 000000000..b56a53caf
--- /dev/null
+++ b/src/scrcmd.c
@@ -0,0 +1,15 @@
+
+// Includes
+#include "global.h"
+
+// Static type declarations
+
+// Static RAM declarations
+
+IWRAM_DATA u8 gUnknown_03000F30;
+
+// Static ROM declarations
+
+// .rodata
+
+// .text