diff --git a/engine/battle/battle_transition.asm b/engine/battle/battle_transition.asm
index af120fdd3..e4c99be6c 100644
--- a/engine/battle/battle_transition.asm
+++ b/engine/battle/battle_transition.asm
@@ -315,7 +315,7 @@ StartTrainerBattle_SetUpForWavyOutro:
 
 	call StartTrainerBattle_NextScene
 
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 	xor a
 	ldh [hLYOverrideStart], a
diff --git a/engine/battle/sliding_intro.asm b/engine/battle/sliding_intro.asm
index e002247a4..bda859cb4 100644
--- a/engine/battle/sliding_intro.asm
+++ b/engine/battle/sliding_intro.asm
@@ -4,7 +4,7 @@ BattleIntroSlidingPics:
 	ld a, BANK(wLYOverrides)
 	ldh [rSVBK], a
 	call .subfunction1
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 	call .subfunction2
 	xor a
diff --git a/engine/battle_anims/bg_effects.asm b/engine/battle_anims/bg_effects.asm
index c3c9ea6a5..04234a020 100644
--- a/engine/battle_anims/bg_effects.asm
+++ b/engine/battle_anims/bg_effects.asm
@@ -978,7 +978,7 @@ BattleBGEffect_Whirlpool:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	ldh [hLCDCPointer], a
 	xor a
 	ldh [hLYOverrideStart], a
@@ -998,7 +998,7 @@ BattleBGEffect_Whirlpool:
 
 BattleBGEffect_30:
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	call BattleBGEffect_SetLCDStatCustoms1
 	call EndBattleBGEffect
 	ret
@@ -1051,7 +1051,7 @@ BattleBGEffect_Psychic:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 	xor a
 	ldh [hLYOverrideStart], a
@@ -1088,7 +1088,7 @@ BattleBGEffect_Teleport:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	lb de, 6, 5
 	call Functionc8f2e
@@ -1112,7 +1112,7 @@ BattleBGEffect_NightShade:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ld hl, BG_EFFECT_STRUCT_03
 	add hl, bc
@@ -1142,7 +1142,7 @@ BattleBGEffect_DoubleTeam:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1233,7 +1233,7 @@ BattleBGEffect_AcidArmor:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ld hl, BG_EFFECT_STRUCT_03
 	add hl, bc
@@ -1295,7 +1295,7 @@ BattleBGEffect_Withdraw:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1344,7 +1344,7 @@ BattleBGEffect_Dig:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1410,7 +1410,7 @@ BattleBGEffect_Tackle:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1444,7 +1444,7 @@ BattleBGEffect_25:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms2
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1575,7 +1575,7 @@ BattleBGEffect_2d:
 BGEffect2d_2f_zero:
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1618,7 +1618,7 @@ BattleBGEffect_26:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1656,7 +1656,7 @@ BattleBGEffect_2c:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1710,7 +1710,7 @@ BattleBGEffect_28:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ret
 
@@ -1752,7 +1752,7 @@ BattleBGEffect_BounceDown:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	call BattleBGEffect_SetLCDStatCustoms2
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -1909,7 +1909,7 @@ BattleBGEffect_2b:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
 	add hl, bc
@@ -1950,7 +1950,7 @@ BattleBGEffect_1c:
 	call BattleBGEffects_IncrementJumptable
 	ld a, $e4
 	call BattleBGEffects_SetLYOverrides
-	ld a, rBGP - $ff00
+	ld a, LOW(rBGP)
 	ldh [hLCDCPointer], a
 	xor a
 	ldh [hLYOverrideStart], a
@@ -2175,7 +2175,7 @@ BattleBGEffect_VibrateMon:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	call BattleBGEffect_SetLCDStatCustoms1
 	ldh a, [hLYOverrideEnd]
 	inc a
@@ -2220,7 +2220,7 @@ BattleBGEffect_WobbleMon:
 .zero
 	call BattleBGEffects_IncrementJumptable
 	call BattleBGEffects_ClearLYOverrides
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 	xor a
 	ldh [hLYOverrideStart], a
diff --git a/engine/battle_anims/functions.asm b/engine/battle_anims/functions.asm
index 93d960189..e6e21382d 100644
--- a/engine/battle_anims/functions.asm
+++ b/engine/battle_anims/functions.asm
@@ -1137,7 +1137,7 @@ BattleAnimFunction_0D:
 	dw .four
 .zero
 	call BattleAnim_IncAnonJumptableIndex
-	ld a, rSCY - $ff00
+	ld a, LOW(rSCY)
 	ldh [hLCDCPointer], a
 	ld a, $58
 	ldh [hLYOverrideStart], a
diff --git a/engine/events/magnet_train.asm b/engine/events/magnet_train.asm
index 1146b73b6..1a037ef41 100644
--- a/engine/events/magnet_train.asm
+++ b/engine/events/magnet_train.asm
@@ -242,7 +242,7 @@ MagnetTrain_InitLYOverrides:
 	ld bc, wLYOverridesBackupEnd - wLYOverridesBackup
 	ld a, [wMagnetTrainInitPosition]
 	call ByteFill
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 	ret
 
diff --git a/engine/gfx/load_push_oam.asm b/engine/gfx/load_push_oam.asm
index 0605e5803..8fa69d0de 100644
--- a/engine/gfx/load_push_oam.asm
+++ b/engine/gfx/load_push_oam.asm
@@ -1,5 +1,5 @@
 WriteOAMDMACodeToHRAM::
-	ld c, hTransferVirtualOAM - $ff00
+	ld c, LOW(hTransferVirtualOAM)
 	ld b, .PushOAMEnd - .PushOAM
 	ld hl, .PushOAM
 .loop
diff --git a/engine/movie/credits.asm b/engine/movie/credits.asm
index 4ea997b9f..462c30523 100644
--- a/engine/movie/credits.asm
+++ b/engine/movie/credits.asm
@@ -68,7 +68,7 @@ Credits::
 	xor a
 	call ByteFill
 
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 
 	call GetCreditsPalette
diff --git a/engine/movie/crystal_intro.asm b/engine/movie/crystal_intro.asm
index bb9cd6936..8bbfb9be8 100644
--- a/engine/movie/crystal_intro.asm
+++ b/engine/movie/crystal_intro.asm
@@ -1994,7 +1994,7 @@ Intro_ResetLYOverrides:
 
 	pop af
 	ldh [rSVBK], a
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 	ret
 
diff --git a/engine/movie/title.asm b/engine/movie/title.asm
index 0f5519210..26b30c3ee 100644
--- a/engine/movie/title.asm
+++ b/engine/movie/title.asm
@@ -177,7 +177,7 @@ _TitleScreen:
 	call ByteFill
 
 ; Let LCD Stat know we're messing around with SCX
-	ld a, rSCX - $ff00
+	ld a, LOW(rSCX)
 	ldh [hLCDCPointer], a
 
 	pop af
diff --git a/home/lcd.asm b/home/lcd.asm
index 7b78e5688..68edf9b0f 100644
--- a/home/lcd.asm
+++ b/home/lcd.asm
@@ -2,7 +2,7 @@
 
 Unreferenced_Function547::
 	ldh a, [hLCDCPointer]
-	cp rSCX - $ff00
+	cp LOW(rSCX)
 	ret nz
 	ld c, a
 	ld a, [wLYOverrides]