diff --git a/src/battle_anim_effects_2.c b/src/battle_anim_effects_2.c
index 92bca01f2..5dd584386 100755
--- a/src/battle_anim_effects_2.c
+++ b/src/battle_anim_effects_2.c
@@ -3079,7 +3079,7 @@ void AnimTask_FakeOut(u8 taskId)
     SetGpuReg(REG_OFFSET_WININ, WININ_WIN0_BG_ALL | WININ_WIN0_OBJ | WININ_WIN1_ALL);
     SetGpuReg(REG_OFFSET_WINOUT, WINOUT_WIN01_ALL | WINOUT_WINOBJ_ALL);
     SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_BG3 | BLDCNT_EFFECT_DARKEN);
-    SetGpuReg(REG_OFFSET_BLDY, 0x10);
+    SetGpuReg(REG_OFFSET_BLDY, 16);
     gTasks[taskId].data[0] = win0v;
     gTasks[taskId].data[1] = win0h;
     gTasks[taskId].func = AnimTask_FakeOut_Step1;
diff --git a/src/battle_anim_ghost.c b/src/battle_anim_ghost.c
index b52932b46..e7cd4b253 100644
--- a/src/battle_anim_ghost.c
+++ b/src/battle_anim_ghost.c
@@ -950,7 +950,7 @@ void AnimTask_CurseStretchingBlackBg(u8 taskId)
     SetGpuReg(REG_OFFSET_WINOUT, ((WINOUT_WIN01_BG_ALL | WINOUT_WIN01_OBJ) |
                                     (WINOUT_WINOBJ_BG_ALL | WINOUT_WINOBJ_OBJ | WINOUT_WINOBJ_CLR)));
     SetGpuReg(REG_OFFSET_BLDCNT, (BLDCNT_TGT1_BG3 | BLDCNT_EFFECT_DARKEN));
-    SetGpuReg(REG_OFFSET_BLDY, 0x10);
+    SetGpuReg(REG_OFFSET_BLDY, 16);
 
     if (GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER || IsContest())
         startX = 40;
diff --git a/src/battle_main.c b/src/battle_main.c
index 323053bdf..741461b0b 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -2047,7 +2047,7 @@ static u8 CreateNPCTrainerParty(struct Pokemon *party, u16 trainerNum, bool8 fir
 void sub_8038A04(void) // unused
 {
     if (REG_VCOUNT < 0xA0 && REG_VCOUNT >= 0x6F)
-        SetGpuReg(REG_OFFSET_BG0CNT, 0x9800);
+        SetGpuReg(REG_OFFSET_BG0CNT, BGCNT_SCREENBASE(24) | BGCNT_TXT256x512);
 }
 
 void VBlankCB_Battle(void)
diff --git a/src/battle_transition.c b/src/battle_transition.c
index ed518eaf8..1b484f7c5 100644
--- a/src/battle_transition.c
+++ b/src/battle_transition.c
@@ -1250,12 +1250,12 @@ static void sub_814669C(struct Task *task)
     task->tData2 = 0;
     task->tData4 = 0;
     task->tData5 = 0x4000;
-    sTransitionStructPtr->WININ = 63;
+    sTransitionStructPtr->WININ = WININ_WIN0_ALL;
     sTransitionStructPtr->WINOUT = 0;
     sTransitionStructPtr->WIN0H = DISPLAY_WIDTH;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
-    sTransitionStructPtr->BLDCNT = 0x3F41;
-    sTransitionStructPtr->BLDALPHA = (task->tData1 << 8) | (task->tData2);
+    sTransitionStructPtr->BLDCNT = BLDCNT_TGT1_BG0 | BLDCNT_EFFECT_BLEND | BLDCNT_TGT2_ALL;
+    sTransitionStructPtr->BLDALPHA = BLDALPHA_BLEND(task->tData2, task->tData1);
 
     for (i = 0; i < 160; i++)
     {
@@ -1480,7 +1480,7 @@ static bool8 Phase2_BigPokeball_Func3(struct Task *task)
         task->tData2++;
         task->tData3 = 2;
     }
-    sTransitionStructPtr->BLDALPHA = (task->tData1 << 8) | task->tData2;
+    sTransitionStructPtr->BLDALPHA = BLDALPHA_BLEND(task->tData2, task->tData1);
     if (task->tData2 > 15)
         task->tState++;
     task->tData4 += 8;
@@ -1500,7 +1500,7 @@ static bool8 Phase2_BigPokeball_Func4(struct Task *task)
         task->tData1--;
         task->tData3 = 2;
     }
-    sTransitionStructPtr->BLDALPHA = (task->tData1 << 8) | task->tData2;
+    sTransitionStructPtr->BLDALPHA = BLDALPHA_BLEND(task->tData2, task->tData1);
     if (task->tData1 == 0)
         task->tState++;
     task->tData4 += 8;
@@ -1731,7 +1731,7 @@ static bool8 Phase2_Clockwise_BlackFade_Func1(struct Task *task)
     ScanlineEffect_Clear();
 
     sTransitionStructPtr->WININ = 0;
-    sTransitionStructPtr->WINOUT = 63;
+    sTransitionStructPtr->WINOUT = WINOUT_WIN01_ALL;
     sTransitionStructPtr->WIN0H = -3855;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
 
@@ -1999,7 +1999,7 @@ static bool8 Phase2_Wave_Func1(struct Task *task)
     InitTransitionStructVars();
     ScanlineEffect_Clear();
 
-    sTransitionStructPtr->WININ = 63;
+    sTransitionStructPtr->WININ = WININ_WIN0_ALL;
     sTransitionStructPtr->WINOUT = 0;
     sTransitionStructPtr->WIN0H = DISPLAY_WIDTH;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
@@ -2111,8 +2111,8 @@ static bool8 Phase2_Mugshot_Func1(struct Task *task)
     task->tData1 = 0;
     task->tData2 = 1;
     task->tData3 = 239;
-    sTransitionStructPtr->WININ = 63;
-    sTransitionStructPtr->WINOUT = 62;
+    sTransitionStructPtr->WININ = WININ_WIN0_ALL;
+    sTransitionStructPtr->WINOUT = WINOUT_WIN01_BG1 | WINOUT_WIN01_BG2 | WINOUT_WIN01_BG3 | WINOUT_WIN01_OBJ | WINOUT_WIN01_CLR;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
 
     for (i = 0; i < 160; i++)
@@ -2258,7 +2258,7 @@ static bool8 Phase2_Mugshot_Func6(struct Task *task)
         task->tState++;
         task->tData3 = 0;
         task->tData4 = 0;
-        sTransitionStructPtr->BLDCNT = 0xBF;
+        sTransitionStructPtr->BLDCNT = BLDCNT_TGT1_ALL | BLDCNT_EFFECT_LIGHTEN;
         SetVBlankCallback(VBlankCB1_Phase2_Mugshots);
     }
     return FALSE;
@@ -2505,7 +2505,7 @@ static bool8 Phase2_Slice_Func1(struct Task *task)
 
     task->tData2 = 256;
     task->tData3 = 1;
-    sTransitionStructPtr->WININ = 63;
+    sTransitionStructPtr->WININ = WININ_WIN0_ALL;
     sTransitionStructPtr->WINOUT = 0;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
     sTransitionStructPtr->VBlank_DMA = FALSE;
@@ -2606,7 +2606,7 @@ static bool8 Phase2_ShredSplit_Func1(struct Task *task)
     InitTransitionStructVars();
     ScanlineEffect_Clear();
 
-    sTransitionStructPtr->WININ = 63;
+    sTransitionStructPtr->WININ = WININ_WIN0_ALL;
     sTransitionStructPtr->WINOUT = 0;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
 
@@ -2779,7 +2779,7 @@ static bool8 Phase2_Blackhole_Func1(struct Task *task)
     ScanlineEffect_Clear();
 
     sTransitionStructPtr->WININ = 0;
-    sTransitionStructPtr->WINOUT = 63;
+    sTransitionStructPtr->WINOUT = WINOUT_WIN01_ALL;
     sTransitionStructPtr->WIN0H = DISPLAY_WIDTH;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
 
@@ -3116,7 +3116,7 @@ static bool8 Phase2_Rayquaza_Func3(struct Task *task)
     InitTransitionStructVars();
     ScanlineEffect_Clear();
 
-    SetGpuReg(REG_OFFSET_BG0CNT, 0x9A08);
+    SetGpuReg(REG_OFFSET_BG0CNT, BGCNT_CHARBASE(2) | BGCNT_SCREENBASE(26) | BGCNT_TXT256x512);
     GetBg0TilesDst(&tilemap, &tileset);
     CpuFill16(0, tilemap, 0x800);
     CpuCopy16(sRayquaza_Tileset, tileset, 0x2000);
@@ -3207,7 +3207,7 @@ static bool8 Phase2_Rayquaza_Func9(struct Task *task)
         u16 i;
 
         sTransitionStructPtr->WININ = 0;
-        sTransitionStructPtr->WINOUT = 63;
+        sTransitionStructPtr->WINOUT = WINOUT_WIN01_ALL;
         sTransitionStructPtr->WIN0H = DISPLAY_WIDTH;
         sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
 
@@ -3255,10 +3255,10 @@ static bool8 Phase2_WhiteFade_Func1(struct Task *task)
     InitTransitionStructVars();
     ScanlineEffect_Clear();
 
-    sTransitionStructPtr->BLDCNT = 0xBF;
+    sTransitionStructPtr->BLDCNT = BLDCNT_TGT1_ALL | BLDCNT_EFFECT_LIGHTEN;
     sTransitionStructPtr->BLDY = 0;
-    sTransitionStructPtr->WININ = 0x1E;
-    sTransitionStructPtr->WINOUT = 0x3F;
+    sTransitionStructPtr->WININ = WININ_WIN0_BG1 | WININ_WIN0_BG2 | WININ_WIN0_BG3 | WININ_WIN0_OBJ;
+    sTransitionStructPtr->WINOUT = WINOUT_WIN01_ALL;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
 
     for (i = 0; i < 160; i++)
@@ -3314,10 +3314,10 @@ static bool8 Phase2_WhiteFade_Func4(struct Task *task)
     SetVBlankCallback(0);
     SetHBlankCallback(0);
 
-    sTransitionStructPtr->WIN0H = 0xF0;
+    sTransitionStructPtr->WIN0H = DISPLAY_WIDTH;
     sTransitionStructPtr->BLDY = 0;
     sTransitionStructPtr->BLDCNT = 0xFF;
-    sTransitionStructPtr->WININ = 0x3F;
+    sTransitionStructPtr->WININ = WININ_WIN0_ALL;
 
     SetVBlankCallback(VBlankCB1_Phase2_WhiteFade);
 
@@ -3468,7 +3468,7 @@ static bool8 Phase2_Shards_Func1(struct Task *task)
     InitTransitionStructVars();
     ScanlineEffect_Clear();
 
-    sTransitionStructPtr->WININ = 0x3F;
+    sTransitionStructPtr->WININ = WININ_WIN0_ALL;
     sTransitionStructPtr->WINOUT = 0;
     sTransitionStructPtr->WIN0V = DISPLAY_HEIGHT;
 
@@ -3895,8 +3895,8 @@ static bool8 Phase2_FrontierLogoWave_Func1(struct Task *task)
     task->tData5 = 0;
     task->tData6 = 16;
     task->tData7 = 2560;
-    sTransitionStructPtr->BLDCNT = 0x3F41;
-    sTransitionStructPtr->BLDALPHA = (task->tData6 << 8) | (task->tData5);
+    sTransitionStructPtr->BLDCNT = BLDCNT_TGT1_BG0 | BLDCNT_EFFECT_BLEND | BLDCNT_TGT2_ALL;
+    sTransitionStructPtr->BLDALPHA = BLDALPHA_BLEND(task->tData5, task->tData6);
     REG_BLDCNT = sTransitionStructPtr->BLDCNT;
     REG_BLDALPHA = sTransitionStructPtr->BLDALPHA;
     GetBg0TilesDst(&tilemap, &tileset);
@@ -3965,7 +3965,7 @@ static bool8 Phase2_FrontierLogoWave_Func4(struct Task *task)
         else if (task->tData6 > 0)
             task->tData6--;
 
-        sTransitionStructPtr->BLDALPHA = (task->tData6 << 8) | (task->tData5);
+        sTransitionStructPtr->BLDALPHA = BLDALPHA_BLEND(task->tData5, task->tData6);
     }
 
     for (i = 0; i < 160; i++, var6 += var8)
diff --git a/src/berry_blender.c b/src/berry_blender.c
index 39e1dca08..d47aa707d 100644
--- a/src/berry_blender.c
+++ b/src/berry_blender.c
@@ -1426,7 +1426,7 @@ static void CB2_StartBlenderLink(void)
         sBerryBlender->centerScale += 4;
         if (sBerryBlender->centerScale > 255)
         {
-            SetGpuRegBits(REG_OFFSET_BG2CNT, 2);
+            SetGpuRegBits(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(2));
             sBerryBlender->mainState++;
             sBerryBlender->centerScale = 256;
             sBerryBlender->arrowPos = sArrowStartPos[sArrowStartPosIds[sBerryBlender->numPlayers - 2]];
@@ -1726,7 +1726,7 @@ static void CB2_StartBlenderLocal(void)
             sBerryBlender->mainState++;
             sBerryBlender->centerScale = 256;
             sBerryBlender->arrowPos = sArrowStartPos[sArrowStartPosIds[sBerryBlender->numPlayers - 2]];
-            SetGpuRegBits(REG_OFFSET_BG2CNT, 2);
+            SetGpuRegBits(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(2));
             sBerryBlender->framesToWait = 0;
             PlaySE(SE_TRUCK_DOOR);
             PrintPlayerNames();
diff --git a/src/diploma.c b/src/diploma.c
index 8652430e7..dca0912e3 100644
--- a/src/diploma.c
+++ b/src/diploma.c
@@ -51,18 +51,18 @@ void CB2_ShowDiploma(void)
 {
     SetVBlankCallback(NULL);
     SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG3CNT, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG2CNT, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG1CNT, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG0CNT, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG3HOFS, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG3VOFS, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG2HOFS, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG2VOFS, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG1HOFS, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG1VOFS, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG0HOFS, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BG0VOFS, DISPCNT_MODE_0);
+    SetGpuReg(REG_OFFSET_BG3CNT, 0);
+    SetGpuReg(REG_OFFSET_BG2CNT, 0);
+    SetGpuReg(REG_OFFSET_BG1CNT, 0);
+    SetGpuReg(REG_OFFSET_BG0CNT, 0);
+    SetGpuReg(REG_OFFSET_BG3HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG3VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0VOFS, 0);
     // why doesn't this one use the dma manager either?
     DmaFill16(3, 0, VRAM, VRAM_SIZE);
     DmaFill32(3, 0, OAM, OAM_SIZE);
@@ -129,12 +129,12 @@ static void DisplayDiplomaText(void)
 {
     if (HasAllMons())
     {
-        SetGpuReg(REG_OFFSET_BG1HOFS, DISPCNT_BG0_ON);
+        SetGpuReg(REG_OFFSET_BG1HOFS, DISPLAY_WIDTH + 16);
         StringCopy(gStringVar1, gText_DexNational);
     }
     else
     {
-        SetGpuReg(REG_OFFSET_BG1HOFS, DISPCNT_MODE_0);
+        SetGpuReg(REG_OFFSET_BG1HOFS, 0);
         StringCopy(gStringVar1, gText_DexHoenn);
     }
     StringExpandPlaceholders(gStringVar4, gText_PokedexDiploma);
@@ -173,9 +173,9 @@ static void InitDiplomaBg(void)
     SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
     ShowBg(0);
     ShowBg(1);
-    SetGpuReg(REG_OFFSET_BLDCNT, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BLDALPHA, DISPCNT_MODE_0);
-    SetGpuReg(REG_OFFSET_BLDY, DISPCNT_MODE_0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
 }
 
 static const struct WindowTemplate sDiplomaWinTemplates[2] =
diff --git a/src/evolution_scene.c b/src/evolution_scene.c
index 59316835f..39e917161 100644
--- a/src/evolution_scene.c
+++ b/src/evolution_scene.c
@@ -1125,7 +1125,7 @@ static void Task_TradeEvolutionScene(u8 taskId)
             var = gSprites[sEvoStructPtr->preEvoSpriteId].oam.paletteNum + 16;
             sEvoGraphicsTaskId = EvolutionSparkles_SpiralUpward(var);
             gTasks[taskId].tState++;
-            SetGpuReg(REG_OFFSET_BG3CNT, 0x603);
+            SetGpuReg(REG_OFFSET_BG3CNT, BGCNT_PRIORITY(3) | BGCNT_SCREENBASE(6));
         }
         break;
     case T_EVOSTATE_SPARKLE_ARC:
diff --git a/src/option_menu.c b/src/option_menu.c
index a210c9502..0174b69db 100644
--- a/src/option_menu.c
+++ b/src/option_menu.c
@@ -187,7 +187,7 @@ void CB2_InitOptionMenu(void)
         SetGpuReg(REG_OFFSET_WIN0V, 0);
         SetGpuReg(REG_OFFSET_WININ, WININ_WIN0_BG0);
         SetGpuReg(REG_OFFSET_WINOUT, WINOUT_WIN01_BG0 | WINOUT_WIN01_BG1 | WINOUT_WIN01_CLR);
-        SetGpuReg(REG_OFFSET_BLDCNT, 193);
+        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_BG0 | BLDCNT_EFFECT_DARKEN);
         SetGpuReg(REG_OFFSET_BLDALPHA, 0);
         SetGpuReg(REG_OFFSET_BLDY, 4);
         SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON | DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
diff --git a/src/title_screen.c b/src/title_screen.c
index 21d10495c..cf356cefa 100644
--- a/src/title_screen.c
+++ b/src/title_screen.c
@@ -600,7 +600,7 @@ void CB2_InitTitleScreen(void)
         SetGpuReg(REG_OFFSET_WINOUT, WINOUT_WIN01_BG_ALL | WINOUT_WIN01_OBJ | WINOUT_WINOBJ_ALL);
         SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_BG2 | BLDCNT_EFFECT_LIGHTEN);
         SetGpuReg(REG_OFFSET_BLDALPHA, 0);
-        SetGpuReg(REG_OFFSET_BLDY, 0xC);
+        SetGpuReg(REG_OFFSET_BLDY, 12);
         SetGpuReg(REG_OFFSET_BG0CNT, BGCNT_PRIORITY(3) | BGCNT_CHARBASE(2) | BGCNT_SCREENBASE(26) | BGCNT_16COLOR | BGCNT_TXT256x256);
         SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(2) | BGCNT_CHARBASE(3) | BGCNT_SCREENBASE(27) | BGCNT_16COLOR | BGCNT_TXT256x256);
         SetGpuReg(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(1) | BGCNT_CHARBASE(0) | BGCNT_SCREENBASE(9) | BGCNT_256COLOR | BGCNT_AFF256x256);