diff --git a/Makefile b/Makefile
index c9d0cc2..60133ea 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ endif
 
 %.o: dep = $(shell tools/scan_includes $(@D)/$*.asm)
 %.o: %.asm $$(dep)
-	rgbasm -h -Wunmapped-char=0 -l -o $@ $<
+	rgbasm -Wunmapped-char=0 -o $@ $<
 
 $(ROM): $(OBJS) contents/contents.link
 	rgblink -n $(ROM:.gbc=.sym) -m $(ROM:.gbc=.map) -l contents/contents.link -o $@ $(OBJS)
diff --git a/audio/engine_0f.asm b/audio/engine_0f.asm
index d16dab5..a7fe674 100644
--- a/audio/engine_0f.asm
+++ b/audio/engine_0f.asm
@@ -365,9 +365,9 @@ Func_3c180: ; 0x3c180
 	jp nz, .asm_3c18f
 	call Func_3c40d
 	ld a, [wde98]
-	ld [rNR50], a
+	ldh [rNR50], a
 	ld a, [wde99]
-	ld [rNR51], a
+	ldh [rNR51], a
 	ret
 
 Func_3c24d: ; 0x3c24d
@@ -399,7 +399,7 @@ Func_3c26e: ; 0x3c26e
 	bit 3, [hl]
 	jr z, .asm_3c27b
 	ld a, [wde9a]
-	ld [rNR10], a
+	ldh [rNR10], a
 .asm_3c27b
 	bit 5, [hl]
 	jr nz, .asm_3c2ba
@@ -410,53 +410,53 @@ Func_3c26e: ; 0x3c26e
 	bit 1, [hl]
 	jr z, .asm_3c295
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_3c295
 	bit 2, [hl]
 	jr z, .asm_3c2a5
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_3c2a5
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR11]
+	ldh a, [rNR11]
 	and $3f
 	or d
-	ld [rNR11], a
+	ldh [rNR11], a
 	ret
 
 .asm_3c2b4
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ret
 
 .asm_3c2ba
 	ld a, $8
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 .asm_3c2c6
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR11], a
+	ldh [rNR11], a
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 Func_3c2e0: ; 0x3c2e0
@@ -471,53 +471,53 @@ Func_3c2e0: ; 0x3c2e0
 	bit 1, [hl]
 	jr z, .asm_3c2fe
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_3c2fe
 	bit 2, [hl]
 	jr z, .asm_3c30e
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_3c30e
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR21]
+	ldh a, [rNR21]
 	and $3f
 	or d
-	ld [rNR21], a
+	ldh [rNR21], a
 	ret
 
 .asm_3c31d
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ret
 
 .asm_3c323
 	ld a, $8
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 .asm_3c32f
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR21], a
+	ldh [rNR21], a
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 Func_3c349: ; 0x3c349
@@ -532,47 +532,47 @@ Func_3c349: ; 0x3c349
 	bit 1, [hl]
 	jr z, .asm_3c367
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
-	ld [rNR34], a
+	ldh [rNR34], a
 .asm_3c367
 	bit 2, [hl]
 	ret z
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_BankF
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 .asm_3c381
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ret
 
 .asm_3c387
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	ret
 
 .asm_3c38b
 	ld a, $3f
-	ld [rNR31], a
+	ldh [rNR31], a
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_BankF
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 LoadWavePattern_BankF: ; 0x3c3a6
@@ -601,7 +601,7 @@ LoadWavePattern_BankF: ; 0x3c3a6
 	ld a, [wde92]
 	and $f0
 	sla a
-	ld [rNR32], a  ; set volume of wave channel
+	ldh [rNR32], a  ; set volume of wave channel
 	ret
 
 Func_3c3cf: ; 0x3c3cf
@@ -614,32 +614,32 @@ Func_3c3cf: ; 0x3c3cf
 	bit 1, [hl]
 	jr z, .asm_3c3e4
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 .asm_3c3e4
 	bit 2, [hl]
 	ret z
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_3c3f1
 	ld a, $8
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_3c3fa
 	ld a, $3f
-	ld [rNR41], a
+	ldh [rNR41], a
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 Func_3c40d: ; 0x3c40d
@@ -1133,7 +1133,7 @@ Func_3c670: ; 0x3c670
 	cp $4
 	jr nz, .asm_3c6f6
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 .asm_3c6f6
 	ld hl, $0002
@@ -1834,7 +1834,7 @@ Func_3cb06: ; 0x3cb06
 	cp $0
 	ret nz
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 	ret
 
diff --git a/audio/engine_10.asm b/audio/engine_10.asm
index 37b6b18..1bf888a 100644
--- a/audio/engine_10.asm
+++ b/audio/engine_10.asm
@@ -360,9 +360,9 @@ Func_40180:
 	jp nz, .asm_4018f
 	call Func_4040d
 	ld a, [wde98]
-	ld [rNR50], a
+	ldh [rNR50], a
 	ld a, [wde99]
-	ld [rNR51], a
+	ldh [rNR51], a
 	ret
 
 Func_4024d:
@@ -394,7 +394,7 @@ Func_4026e:
 	bit 3, [hl]
 	jr z, .asm_4027b
 	ld a, [wde9a]
-	ld [rNR10], a
+	ldh [rNR10], a
 .asm_4027b
 	bit 5, [hl]
 	jr nz, .asm_402ba
@@ -405,53 +405,53 @@ Func_4026e:
 	bit 1, [hl]
 	jr z, .asm_40295
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_40295
 	bit 2, [hl]
 	jr z, .asm_402a5
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_402a5
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR11]
+	ldh a, [rNR11]
 	and $3f
 	or d
-	ld [rNR11], a
+	ldh [rNR11], a
 	ret
 
 .asm_402b4
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ret
 
 .asm_402ba
 	ld a, $8
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 .asm_402c6
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR11], a
+	ldh [rNR11], a
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 Func_402e0:
@@ -466,53 +466,53 @@ Func_402e0:
 	bit 1, [hl]
 	jr z, .asm_402fe
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_402fe
 	bit 2, [hl]
 	jr z, .asm_4030e
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_4030e
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR21]
+	ldh a, [rNR21]
 	and $3f
 	or d
-	ld [rNR21], a
+	ldh [rNR21], a
 	ret
 
 .asm_4031d
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ret
 
 .asm_40323
 	ld a, $8
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 .asm_4032f
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR21], a
+	ldh [rNR21], a
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 Func_40349:
@@ -527,47 +527,47 @@ Func_40349:
 	bit 1, [hl]
 	jr z, .asm_40367
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
-	ld [rNR34], a
+	ldh [rNR34], a
 .asm_40367
 	bit 2, [hl]
 	ret z
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank10
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 .asm_40381
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ret
 
 .asm_40387
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	ret
 
 .asm_4038b
 	ld a, $3f
-	ld [rNR31], a
+	ldh [rNR31], a
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank10
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 LoadWavePattern_Bank10:
@@ -596,7 +596,7 @@ LoadWavePattern_Bank10:
 	ld a, [wde92]
 	and $f0
 	sla a
-	ld [rNR32], a  ; set volume of wave channel
+	ldh [rNR32], a  ; set volume of wave channel
 	ret
 
 Func_403cf:
@@ -609,32 +609,32 @@ Func_403cf:
 	bit 1, [hl]
 	jr z, .asm_403e4
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 .asm_403e4
 	bit 2, [hl]
 	ret z
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_403f1
 	ld a, $8
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_403fa
 	ld a, $3f
-	ld [rNR41], a
+	ldh [rNR41], a
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 Func_4040d:
@@ -1128,7 +1128,7 @@ Func_40670:
 	cp $4
 	jr nz, .asm_406f6
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 .asm_406f6
 	ld hl, $0002
@@ -1829,7 +1829,7 @@ Func_40b06:
 	cp $0
 	ret nz
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 	ret
 
diff --git a/audio/engine_11.asm b/audio/engine_11.asm
index 323c278..064bae6 100644
--- a/audio/engine_11.asm
+++ b/audio/engine_11.asm
@@ -360,9 +360,9 @@ Func_44180:
 	jp nz, .asm_4418f
 	call Func_4440d
 	ld a, [wde98]
-	ld [rNR50], a
+	ldh [rNR50], a
 	ld a, [wde99]
-	ld [rNR51], a
+	ldh [rNR51], a
 	ret
 
 Func_4424d:
@@ -394,7 +394,7 @@ Func_4426e:
 	bit 3, [hl]
 	jr z, .asm_4427b
 	ld a, [wde9a]
-	ld [rNR10], a
+	ldh [rNR10], a
 .asm_4427b
 	bit 5, [hl]
 	jr nz, .asm_442ba
@@ -405,53 +405,53 @@ Func_4426e:
 	bit 1, [hl]
 	jr z, .asm_44295
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_44295
 	bit 2, [hl]
 	jr z, .asm_442a5
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_442a5
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR11]
+	ldh a, [rNR11]
 	and $3f
 	or d
-	ld [rNR11], a
+	ldh [rNR11], a
 	ret
 
 .asm_442b4
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ret
 
 .asm_442ba
 	ld a, $8
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 .asm_442c6
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR11], a
+	ldh [rNR11], a
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 Func_442e0:
@@ -466,53 +466,53 @@ Func_442e0:
 	bit 1, [hl]
 	jr z, .asm_442fe
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_442fe
 	bit 2, [hl]
 	jr z, .asm_4430e
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_4430e
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR21]
+	ldh a, [rNR21]
 	and $3f
 	or d
-	ld [rNR21], a
+	ldh [rNR21], a
 	ret
 
 .asm_4431d
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ret
 
 .asm_44323
 	ld a, $8
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 .asm_4432f
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR21], a
+	ldh [rNR21], a
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 Func_44349:
@@ -527,47 +527,47 @@ Func_44349:
 	bit 1, [hl]
 	jr z, .asm_44367
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
-	ld [rNR34], a
+	ldh [rNR34], a
 .asm_44367
 	bit 2, [hl]
 	ret z
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank11
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 .asm_44381
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ret
 
 .asm_44387
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	ret
 
 .asm_4438b
 	ld a, $3f
-	ld [rNR31], a
+	ldh [rNR31], a
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank11
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 LoadWavePattern_Bank11:
@@ -596,7 +596,7 @@ LoadWavePattern_Bank11:
 	ld a, [wde92]
 	and $f0
 	sla a
-	ld [rNR32], a  ; set volume of wave channel
+	ldh [rNR32], a  ; set volume of wave channel
 	ret
 
 Func_443cf:
@@ -609,32 +609,32 @@ Func_443cf:
 	bit 1, [hl]
 	jr z, .asm_443e4
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 .asm_443e4
 	bit 2, [hl]
 	ret z
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_443f1
 	ld a, $8
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_443fa
 	ld a, $3f
-	ld [rNR41], a
+	ldh [rNR41], a
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 Func_4440d:
@@ -1128,7 +1128,7 @@ Func_44670:
 	cp $4
 	jr nz, .asm_446f6
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 .asm_446f6
 	ld hl, $0002
@@ -1829,7 +1829,7 @@ Func_44b06:
 	cp $0
 	ret nz
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 	ret
 
diff --git a/audio/engine_12.asm b/audio/engine_12.asm
index b67f231..03b0b98 100644
--- a/audio/engine_12.asm
+++ b/audio/engine_12.asm
@@ -360,9 +360,9 @@ Func_48180:
 	jp nz, .asm_4818f
 	call Func_4840d
 	ld a, [wde98]
-	ld [rNR50], a
+	ldh [rNR50], a
 	ld a, [wde99]
-	ld [rNR51], a
+	ldh [rNR51], a
 	ret
 
 Func_4824d:
@@ -394,7 +394,7 @@ Func_4826e:
 	bit 3, [hl]
 	jr z, .asm_4827b
 	ld a, [wde9a]
-	ld [rNR10], a
+	ldh [rNR10], a
 .asm_4827b
 	bit 5, [hl]
 	jr nz, .asm_482ba
@@ -405,53 +405,53 @@ Func_4826e:
 	bit 1, [hl]
 	jr z, .asm_48295
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_48295
 	bit 2, [hl]
 	jr z, .asm_482a5
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_482a5
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR11]
+	ldh a, [rNR11]
 	and $3f
 	or d
-	ld [rNR11], a
+	ldh [rNR11], a
 	ret
 
 .asm_482b4
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ret
 
 .asm_482ba
 	ld a, $8
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 .asm_482c6
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR11], a
+	ldh [rNR11], a
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 Func_482e0:
@@ -466,53 +466,53 @@ Func_482e0:
 	bit 1, [hl]
 	jr z, .asm_482fe
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_482fe
 	bit 2, [hl]
 	jr z, .asm_4830e
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_4830e
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR21]
+	ldh a, [rNR21]
 	and $3f
 	or d
-	ld [rNR21], a
+	ldh [rNR21], a
 	ret
 
 .asm_4831d
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ret
 
 .asm_48323
 	ld a, $8
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 .asm_4832f
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR21], a
+	ldh [rNR21], a
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 Func_48349:
@@ -527,47 +527,47 @@ Func_48349:
 	bit 1, [hl]
 	jr z, .asm_48367
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
-	ld [rNR34], a
+	ldh [rNR34], a
 .asm_48367
 	bit 2, [hl]
 	ret z
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank12
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 .asm_48381
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ret
 
 .asm_48387
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	ret
 
 .asm_4838b
 	ld a, $3f
-	ld [rNR31], a
+	ldh [rNR31], a
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank12
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 LoadWavePattern_Bank12:
@@ -596,7 +596,7 @@ LoadWavePattern_Bank12:
 	ld a, [wde92]
 	and $f0
 	sla a
-	ld [rNR32], a  ; set volume of wave channel
+	ldh [rNR32], a  ; set volume of wave channel
 	ret
 
 Func_483cf:
@@ -609,32 +609,32 @@ Func_483cf:
 	bit 1, [hl]
 	jr z, .asm_483e4
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 .asm_483e4
 	bit 2, [hl]
 	ret z
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_483f1
 	ld a, $8
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_483fa
 	ld a, $3f
-	ld [rNR41], a
+	ldh [rNR41], a
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 Func_4840d:
@@ -1128,7 +1128,7 @@ Func_48670:
 	cp $4
 	jr nz, .asm_486f6
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 .asm_486f6
 	ld hl, $0002
@@ -1829,7 +1829,7 @@ Func_48b06:
 	cp $0
 	ret nz
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 	ret
 
diff --git a/audio/engine_13.asm b/audio/engine_13.asm
index 725cb7c..274b0fe 100644
--- a/audio/engine_13.asm
+++ b/audio/engine_13.asm
@@ -360,9 +360,9 @@ Func_4c180:
 	jp nz, .asm_4c18f
 	call Func_4c40d
 	ld a, [wde98]
-	ld [rNR50], a
+	ldh [rNR50], a
 	ld a, [wde99]
-	ld [rNR51], a
+	ldh [rNR51], a
 	ret
 
 Func_4c24d:
@@ -394,7 +394,7 @@ Func_4c26e:
 	bit 3, [hl]
 	jr z, .asm_4c27b
 	ld a, [wde9a]
-	ld [rNR10], a
+	ldh [rNR10], a
 .asm_4c27b
 	bit 5, [hl]
 	jr nz, .asm_4c2ba
@@ -405,53 +405,53 @@ Func_4c26e:
 	bit 1, [hl]
 	jr z, .asm_4c295
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_4c295
 	bit 2, [hl]
 	jr z, .asm_4c2a5
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 .asm_4c2a5
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR11]
+	ldh a, [rNR11]
 	and $3f
 	or d
-	ld [rNR11], a
+	ldh [rNR11], a
 	ret
 
 .asm_4c2b4
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ret
 
 .asm_4c2ba
 	ld a, $8
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 .asm_4c2c6
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR11], a
+	ldh [rNR11], a
 	ld a, [wde92]
-	ld [rNR12], a
+	ldh [rNR12], a
 	ld a, [wde93]
-	ld [rNR13], a
+	ldh [rNR13], a
 	ld a, [wde94]
 	or $80
-	ld [rNR14], a
+	ldh [rNR14], a
 	ret
 
 Func_4c2e0:
@@ -466,53 +466,53 @@ Func_4c2e0:
 	bit 1, [hl]
 	jr z, .asm_4c2fe
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_4c2fe
 	bit 2, [hl]
 	jr z, .asm_4c30e
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 .asm_4c30e
 	bit 0, [hl]
 	ret z
 	ld a, [wde91]
 	ld d, a
-	ld a, [rNR21]
+	ldh a, [rNR21]
 	and $3f
 	or d
-	ld [rNR21], a
+	ldh [rNR21], a
 	ret
 
 .asm_4c31d
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ret
 
 .asm_4c323
 	ld a, $8
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 .asm_4c32f
 	ld hl, wde91
 	ld a, $3f
 	or [hl]
-	ld [rNR21], a
+	ldh [rNR21], a
 	ld a, [wde92]
-	ld [rNR22], a
+	ldh [rNR22], a
 	ld a, [wde93]
-	ld [rNR23], a
+	ldh [rNR23], a
 	ld a, [wde94]
 	or $80
-	ld [rNR24], a
+	ldh [rNR24], a
 	ret
 
 Func_4c349:
@@ -527,47 +527,47 @@ Func_4c349:
 	bit 1, [hl]
 	jr z, .asm_4c367
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
-	ld [rNR34], a
+	ldh [rNR34], a
 .asm_4c367
 	bit 2, [hl]
 	ret z
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank13
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 .asm_4c381
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ret
 
 .asm_4c387
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	ret
 
 .asm_4c38b
 	ld a, $3f
-	ld [rNR31], a
+	ldh [rNR31], a
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	call LoadWavePattern_Bank13
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, [wde93]
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, [wde94]
 	or $80
-	ld [rNR34], a
+	ldh [rNR34], a
 	ret
 
 LoadWavePattern_Bank13:
@@ -596,7 +596,7 @@ LoadWavePattern_Bank13:
 	ld a, [wde92]
 	and $f0
 	sla a
-	ld [rNR32], a  ; set volume of wave channel
+	ldh [rNR32], a  ; set volume of wave channel
 	ret
 
 Func_4c3cf:
@@ -609,32 +609,32 @@ Func_4c3cf:
 	bit 1, [hl]
 	jr z, .asm_4c3e4
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 .asm_4c3e4
 	bit 2, [hl]
 	ret z
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_4c3f1
 	ld a, $8
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 .asm_4c3fa
 	ld a, $3f
-	ld [rNR41], a
+	ldh [rNR41], a
 	ld a, [wde92]
-	ld [rNR42], a
+	ldh [rNR42], a
 	ld a, [wde93]
-	ld [rNR43], a
+	ldh [rNR43], a
 	ld a, $80
-	ld [rNR44], a
+	ldh [rNR44], a
 	ret
 
 Func_4c40d:
@@ -1128,7 +1128,7 @@ Func_4c670:
 	cp $4
 	jr nz, .asm_4c6f6
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 .asm_4c6f6
 	ld hl, $0002
@@ -1829,7 +1829,7 @@ Func_4cb06:
 	cp $0
 	ret nz
 	xor a
-	ld [rNR10], a
+	ldh [rNR10], a
 	ld [wde9a], a
 	ret
 
diff --git a/audio/pikapcm.asm b/audio/pikapcm.asm
index 6b4bbfe..c055e62 100644
--- a/audio/pikapcm.asm
+++ b/audio/pikapcm.asm
@@ -12,64 +12,64 @@ PlayPikachuSoundClip: ; 0x50000
 	di
 	ld b, $4
 .asm_50010
-	ld a, [rLY]
+	ldh a, [rLY]
 	and a
 	jr nz, .asm_50010
 	dec b
 	jr nz, .asm_50010
 	xor a
-	ld [rNR50], a
-	ld [rNR51], a
+	ldh [rNR50], a
+	ldh [rNR51], a
 	ld a, $80
-	ld [rNR52], a
+	ldh [rNR52], a
 	xor a
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld hl, wd84b
 	ld c, $30
 	ld b, $10
 .asm_5002b
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	ld [hli], a
 	ld a, $ff
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	dec b
 	jr nz, .asm_5002b
 	ld a, $80
-	ld [rNR30], a
+	ldh [rNR30], a
 	ld a, $ff
-	ld [rNR31], a
+	ldh [rNR31], a
 	ld a, $20
-	ld [rNR32], a
+	ldh [rNR32], a
 	ld a, $ff
-	ld [rNR33], a
+	ldh [rNR33], a
 	ld a, $87
-	ld [rNR34], a
+	ldh [rNR34], a
 	ld a, $77
-	ld [rNR50], a
+	ldh [rNR50], a
 	ld a, $44
-	ld [rNR51], a
+	ldh [rNR51], a
 	pop hl
 	call PlayPikachuPCM
 	xor a
-	ld [rNR50], a
-	ld [rNR51], a
-	ld [rNR52], a
+	ldh [rNR50], a
+	ldh [rNR51], a
+	ldh [rNR52], a
 	ld hl, wd84b
 	ld c, $30
 	ld b, $10
 .asm_50062
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	dec b
 	jr nz, .asm_50062
 	ld a, $77
-	ld [rNR50], a
+	ldh [rNR50], a
 	ld a, $ff
-	ld [rNR51], a
+	ldh [rNR51], a
 	ld a, $80
-	ld [rNR52], a
+	ldh [rNR52], a
 	ei
 	ret
 
@@ -129,7 +129,7 @@ LoadNextSoundClipSample: ; 0x51f94
 	and $80
 	srl a
 	srl a
-	ld [rNR32], a
+	ldh [rNR32], a
 	sla d
 	ret
 
diff --git a/engine/high_scores_screen.asm b/engine/high_scores_screen.asm
index 9acd6f0..275d803 100644
--- a/engine/high_scores_screen.asm
+++ b/engine/high_scores_screen.asm
@@ -406,7 +406,7 @@ Func_cd6c: ; 0xcd6c
 	call PlaySoundEffect
 .asm_cdc6
 	xor a
-	ld [rRP], a
+	ldh [rRP], a
 	ld hl, wScreenState
 	dec [hl]
 	ret
@@ -544,7 +544,7 @@ Func_cdce: ; 0xcdce
 	ret
 
 Func_ceca: ; 0xceca
-	ld a, [rLY]
+	ldh a, [rLY]
 	and a
 	jr nz, Func_ceca
 	ei
@@ -573,7 +573,7 @@ SendHighScores: ; 0xced1
 .asm_cefa
 	ld b, $2
 	ld c, $56
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	and b
 	jr z, .asm_cf09
 	ldh a, [hNumFramesSinceLastVBlank]
diff --git a/engine/pinball_game/draw_sprites/draw_gengar_bonus_sprites.asm b/engine/pinball_game/draw_sprites/draw_gengar_bonus_sprites.asm
index 76aa5f0..f6a24cc 100644
--- a/engine/pinball_game/draw_sprites/draw_gengar_bonus_sprites.asm
+++ b/engine/pinball_game/draw_sprites/draw_gengar_bonus_sprites.asm
@@ -66,7 +66,7 @@ Func_19033: ; 0x19033
 .asm_19036
 	call Func_19070
 	jr nc, .asm_19042
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr z, .asm_19036
 	ret
@@ -165,7 +165,7 @@ Func_190c6: ; 0x190c6
 .asm_190c9
 	call Func_19104
 	jr nc, .asm_190d5
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr z, .asm_190c9
 	ret
@@ -278,7 +278,7 @@ Func_1918c: ; 0x1918c
 .asm_1918f
 	call Func_191cb
 	jr nc, .asm_1919b
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr z, .asm_1918f
 	ret
diff --git a/engine/pinball_game/draw_sprites/draw_sprites.asm b/engine/pinball_game/draw_sprites/draw_sprites.asm
index 4684a7b..b8ac95f 100644
--- a/engine/pinball_game/draw_sprites/draw_sprites.asm
+++ b/engine/pinball_game/draw_sprites/draw_sprites.asm
@@ -26,11 +26,11 @@ UnusedFunc_84fd:
 	and a
 	jr z, .not_cgb
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	xor a
 	call .FillAttrsOrBGMap
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 .not_cgb
 	ld a, $81
 	call .FillAttrsOrBGMap
diff --git a/engine/pinball_game/flippers.asm b/engine/pinball_game/flippers.asm
index f2f814b..e85dec0 100644
--- a/engine/pinball_game/flippers.asm
+++ b/engine/pinball_game/flippers.asm
@@ -139,16 +139,16 @@ CheckLeftFlipperCollision:
 	ld hl, wBallXPos
 	ld c, (hBallXPos & $ff)
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [wPreviousLeftFlipperState]
 	ldh [hPreviousFlipperState], a
@@ -171,18 +171,18 @@ CheckRightFlipperCollision: ; 0xe226
 	ld a, [hli]  ; Invert the ball's x position, so that the flipper collision bytes are mirrored.
 	sub $1
 	cpl
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
 	sbc 160
 	cpl
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [wPreviousRightFlipperState]
 	ldh [hPreviousFlipperState], a
diff --git a/engine/pinball_game/stage_init/init_stages.asm b/engine/pinball_game/stage_init/init_stages.asm
index c218688..606b111 100644
--- a/engine/pinball_game/stage_init/init_stages.asm
+++ b/engine/pinball_game/stage_init/init_stages.asm
@@ -3,7 +3,7 @@ InitializeCurrentStage: ; 0x8311
 	ld bc, $0a00
 	call ClearData
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld a, [wd805]
 	and a
 	jr nz, .asm_8331
@@ -20,7 +20,7 @@ InitializeCurrentStage: ; 0x8311
 	call __memset_8
 .asm_833c
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	call ResetDataForStageInitialization
 	ld a, [wCurrentStage]
 	call CallInFollowingTable
diff --git a/engine/pinball_game/stage_init/init_unused_stage.asm b/engine/pinball_game/stage_init/init_unused_stage.asm
index 6051e62..d149b63 100644
--- a/engine/pinball_game/stage_init/init_unused_stage.asm
+++ b/engine/pinball_game/stage_init/init_unused_stage.asm
@@ -4,12 +4,12 @@ Func_18000: ; 0x18000
 	ld bc, $0a00
 	call ClearData
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	hlCoord 0, 0, vBGWin
 	ld bc, $0400
 	call ClearData
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld hl, wWhichVoltorb
 	ld bc, $032e
 	call ClearData
diff --git a/engine/pokedex.asm b/engine/pokedex.asm
index 7c26474..06f1832 100644
--- a/engine/pokedex.asm
+++ b/engine/pokedex.asm
@@ -453,14 +453,14 @@ Func_282e9: ; 0x282e9
 	ld bc, $0200
 	call LoadVRAMData
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld a, BANK(PokedexBGAttributes)
 	ld hl, PokedexBGAttributes
 	ld de, vBGWin
 	ld bc, $0200
 	call LoadVRAMData
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	call Func_28972
 	call Func_28a8a
 	call Func_28ad1
@@ -1552,7 +1552,7 @@ Func_28a15: ; 0x28a15
 	inc de
 	inc de
 	hlCoord 16, 7, vBGMap
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr nz, .asm_28a7a
 	ld a, [de]
@@ -1788,7 +1788,7 @@ Func_28bf5: ; 0x28bf5
 .asm_28c04
 	push bc
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld hl, MonAnimatedPicPointers
 	add hl, bc
 	ld a, Bank(MonAnimatedPicPointers)
@@ -1807,7 +1807,7 @@ Func_28bf5: ; 0x28bf5
 	ld bc, $0300
 	call LoadOrCopyVRAMData
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	pop bc
 	push bc
 	ld a, [wCurPokedexIndex]
@@ -2046,7 +2046,7 @@ Func_28d71: ; 0x28d71
 
 Func_28d88: ; 0x28d88
 	push af
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr nz, .asm_28d92
 	pop af
diff --git a/engine/select_gameboy_target_menu.asm b/engine/select_gameboy_target_menu.asm
index 7079545..568639b 100644
--- a/engine/select_gameboy_target_menu.asm
+++ b/engine/select_gameboy_target_menu.asm
@@ -48,12 +48,12 @@ InitSelectGameboyTargetMenu: ; 0x800a
 
 LoadGameboyTargetMenuGfx: ; 0x8049
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld c, $ff
 	call FillTilesVRAM
 	call FillBackgroundsVRAM
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld c, $0
 	call FillTilesVRAM
 	call FillBackgroundsVRAM
diff --git a/home.asm b/home.asm
index 7234b28..1dabcaa 100644
--- a/home.asm
+++ b/home.asm
@@ -47,33 +47,33 @@ Start: ; 0x150
 	ld sp, hGameBoyColorFlag
 	di
 	xor a
-	ld [rIF], a
-	ld a, [rLCDC]    ; LCD Control
+	ldh [rIF], a
+	ldh a, [rLCDC]    ; LCD Control
 	bit 7, a         ; Check if LCD Display is enabled
 	jr nz, .LCDDisplayEnabled
 	set 7, a
-	ld [rLCDC], a
+	ldh [rLCDC], a
 .LCDDisplayEnabled
 	ld bc, $0002
 	call SGBWait1750
 .waitForVBlank
-	ld a, [rLY]   ; LY register (LCDC Y-Coordinate)
+	ldh a, [rLY]   ; LY register (LCDC Y-Coordinate)
 	cp 145          ; > 144 means V-Blank
 	jr c, .waitForVBlank
 	ld a, $81
-	ld [rLCDC], a   ; Enable LCD Display
+	ldh [rLCDC], a   ; Enable LCD Display
 	xor a
-	ld [rBGP], a   ; Clear Palette Data
-	ld [rOBP0], a
-	ld [rOBP1], a
+	ldh [rBGP], a   ; Clear Palette Data
+	ldh [rOBP0], a
+	ldh [rOBP1], a
 	ld bc, $0002
 	call SGBWait1750
 .waitForVBlank2
-	ld a, [rLY]   ; LY register (LCDC Y-Coordinate)
+	ldh a, [rLY]   ; LY register (LCDC Y-Coordinate)
 	cp 145          ; > 144 means V-Blank
 	jr c, .waitForVBlank2
 	xor a
-	ld [rLCDC], a   ; Disable LCD Display
+	ldh [rLCDC], a   ; Disable LCD Display
 	ld hl, wc000
 	ld bc, $2000
 	call ClearData  ; Clear WRAM Bank 0
@@ -144,7 +144,7 @@ Start: ; 0x150
 	ld [wd917], a
 .asm_222
 	ld a, $1
-	ld [rIE], a  ; Only enable LCD Status interrupt
+	ldh [rIE], a  ; Only enable LCD Status interrupt
 	ei
 	ld a, $ff
 	ld [wRNGModulus], a
@@ -173,7 +173,7 @@ SoftReset:
 	di
 	ld sp, hGameBoyColorFlag
 	xor a
-	ld [rIF], a
+	ldh [rIF], a
 	ld bc, $2
 	call SGBWait1750
 	ld hl, wc000
@@ -233,7 +233,7 @@ SoftReset:
 	ld [wd917], a
 .asm_02d5
 	ld a, $1
-	ld [rIE], a
+	ldh [rIE], a
 	ei
 	ld a, $ff
 	ld [wRNGModulus], a
@@ -254,42 +254,42 @@ VBlank: ; 0x2f2
 	push hl
 	call hPushSprite ; sprite DMA transfer
 	ldh a, [hLCDC]
-	ld [rLCDC], a
+	ldh [rLCDC], a
 	call Func_113a
 	ei
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp $90
 	jr c, .asm_328
 	ld hl, hSTAT
 	ld c, rSTAT - $ff00
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	inc c
 	ld a, [hli] ;hWY
-	ld [$ff00+c], a ;into FF4A
+	ldh [$ff00+c], a ;into FF4A
 	inc c
 	ld a, [hli]
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 .asm_328
 	ldh a, [hLYC]
 	ldh [hLastLYC], a
@@ -345,13 +345,13 @@ VBlank: ; 0x2f2
 	ld a, $1
 	ld [wUpdateAudioEngineUsingTimerInterrupt], a
 	ld a, -68
-	ld [rTMA], a
+	ldh [rTMA], a
 	ld a, $0
-	ld [rTAC], a
+	ldh [rTAC], a
 	ld hl, rIE
 	set 2, [hl]
 	ld a, $4
-	ld [rTAC], a ; Timer interrupt will fire ~60 times per second
+	ldh [rTAC], a ; Timer interrupt will fire ~60 times per second
 .skipTimerToggle
 	ld hl, MBC5SRamBank
 	ld a, [wd917]
@@ -378,7 +378,7 @@ VBlank: ; 0x2f2
 	reti
 
 FadeAndSoftReset:
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr z, .LCD_disabled
 	call FadeOut
@@ -391,10 +391,10 @@ FadeAndSoftReset:
 	res 1, [hl] ; disable STAT interrupt
 	xor a
 	ld [MBC5SRamEnable], a
-	ld [rSB], a
-	ld [rSC], a
-	ld [rIE], a
-	ld [rNR52], a
+	ldh [rSB], a
+	ldh [rSC], a
+	ldh [rIE], a
+	ldh [rNR52], a
 	ldh a, [hGameBoyColorFlagBackup]
 	ldh [hGameBoyColorFlag], a
 	jp SoftReset
@@ -455,7 +455,7 @@ Timer: ; 0x418
 	ld [wUpdateAudioEngineUsingTimerInterrupt], a
 	; disable timer
 	ld a, $0
-	ld [rTAC], a
+	ldh [rTAC], a
 	ld hl, rIE
 	res 2, [hl]
 .skipTimer
@@ -494,7 +494,7 @@ Joypad: ; 0x467
 	reti
 
 DelayFrame: ; 0x468
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	ret z
 	ld hl, hNumFramesSinceLastVBlank
@@ -595,14 +595,14 @@ BankSwitch: ; 0x54f
 	jp hl
 
 DisableLCD: ; 0x576
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	ret z
 	ldh a, [hLCDC]
 	res 7, a
 	ldh [hLCDC], a
 .asm_581
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr nz, .asm_581
 	ret
@@ -613,7 +613,7 @@ EnableLCD: ; 0x588
 	call nz, .UpdatePals
 	ldh a, [hLCDC]
 	set 7, a
-	ld [rLCDC], a
+	ldh [rLCDC], a
 	ldh [hLCDC], a
 	ret
 
@@ -674,15 +674,15 @@ GreyscalePalette:
 	RGB 0, 0, 0
 
 VBlankIntDisable:
-	ld a, [rIE]
+	ldh a, [rIE]
 	res 0, a
-	ld [rIE], a
+	ldh [rIE], a
 	ret
 
 VBlankIntEnable:
-	ld a, [rIE]
+	ldh a, [rIE]
 	set 0, a
-	ld [rIE], a
+	ldh [rIE], a
 	ret
 
 WriteDMACodeToHRAM: ; 0x5f7
@@ -703,7 +703,7 @@ WriteDMACodeToHRAM: ; 0x5f7
 DMARoutine:
 ; This routine is initially loaded into hPushSprite by WriteDMACodeToHRAM.
 	ld a, (wSpriteBuffer >> 8)
-	ld [rDMA], a   ; start DMA
+	ldh [rDMA], a   ; start DMA
 	ld a, $28
 .waitLoop               ; wait for DMA to finish
 	dec a
@@ -714,7 +714,7 @@ DMARoutine:
 WaitForLCD: ; 0x60f
 ; Wait for LCD controller to stop reading from both OAM and VRAM because
 ; CPU can't access OAM, VRAM, or palette data ($ff69, $ff6b) during this time.
-	ld a, [rSTAT]    ; LCDC Status register
+	ldh a, [rSTAT]    ; LCDC Status register
 	and $3
 	jr nz, WaitForLCD
 	ld a, $a
@@ -924,11 +924,11 @@ DrawBottomMessageBox: ; 0xe69
 ; Draws the current scrolling bottom message box to VRAM during V-Blank.
 ; Note, this only applies to the 1-tile high message bar. When it displays, things like Ball Bonus summary, and
 ; the Save/Cancel menu, this is not used to draw the message buffer.
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp $90
 	jr nc, DrawBottomMessageBox ; ensure we're in V-Blank
 .asm_e6f
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, .asm_e6f
 	ld a, $a
@@ -1001,7 +1001,7 @@ Load4BottomMessageBytes: ; 0xeef
 	ret
 
 Write4BottomMessageBytes: ; 0xef8
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, Write4BottomMessageBytes
 	ld a, b
@@ -1029,7 +1029,7 @@ StatIntrTogglePinballWindow:
 ; gameplay.
 	ld hl, hLastLYC
 	ld c, [hl]
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp c
 	jp c, StatIntrDone
 	inc c
@@ -1047,10 +1047,10 @@ StatIntrTogglePinballWindow:
 	ld a, [hl]
 	and $3
 	jr nz, .waitForHBlank
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	and $80 ; enable LCD display
 	or c
-	ld [rLCDC], a
+	ldh [rLCDC], a
 	jp StatIntrDone
 
 StatIntrTogglePokedexWindow: ; 0xfea
@@ -1058,7 +1058,7 @@ StatIntrTogglePokedexWindow: ; 0xfea
 	ldh a, [hLYCSub]
 	cp [hl]
 	jr nz, .asm_1015
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp [hl]
 	jp nz, StatIntrDone
 	ldh a, [hLCDC]
@@ -1071,16 +1071,16 @@ StatIntrTogglePokedexWindow: ; 0xfea
 	ld a, [hl]
 	and $3
 	jr nz, .waitForHBlank
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	and $80 ; enable LCD display
 	or c
-	ld [rLCDC], a
+	ldh [rLCDC], a
 	ld a, b
-	ld [rSCY], a
+	ldh [rSCY], a
 	jp StatIntrDone
 
 .asm_1015
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp [hl]
 	jr nz, .asm_1037
 	ldh a, [hLastLYC]
@@ -1096,14 +1096,14 @@ StatIntrTogglePokedexWindow: ; 0xfea
 	and $3
 	jr nz, .waitForHBlank_2
 	ld a, c
-	ld [rSCY], a
+	ldh [rSCY], a
 	ld a, b
-	ld [rLYC], a
+	ldh [rLYC], a
 	jp StatIntrDone
 
 .asm_1037
 	ld hl, hLYCSub
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp [hl]
 	jp nz, StatIntrDone
 	ldh a, [hLCDC]
@@ -1116,17 +1116,17 @@ StatIntrTogglePokedexWindow: ; 0xfea
 	ld a, [hl]
 	and $3
 	jr nz, .waitForHBlank_3
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	and $80
 	or c
-	ld [rLCDC], a
+	ldh [rLCDC], a
 	ld a, b
-	ld [rSCY], a
+	ldh [rSCY], a
 	jp StatIntrDone
 
 StatIntrToggleHighScoresWindow:
 	ld hl, hLastLYC
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp [hl]
 	jr z, .asm_1069
 	dec a
@@ -1143,14 +1143,14 @@ StatIntrToggleHighScoresWindow:
 	and $3
 	jr nz, .waitForHBlank
 	ld a, b
-	ld [rSCY], a
+	ldh [rSCY], a
 	ld a, c
-	ld [rLYC], a
+	ldh [rLYC], a
 	jp StatIntrDone
 
 .asm_1080
 	ld hl, hLYCSub
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp [hl]
 	jr z, .asm_108d
 	dec a
@@ -1165,7 +1165,7 @@ StatIntrToggleHighScoresWindow:
 	and $3
 	jr nz, .waitForHBlank_2
 	ld a, b
-	ld [rSCY], a
+	ldh [rSCY], a
 	jp StatIntrDone
 
 StatIntrNothing2: ; 0x109e
@@ -1220,11 +1220,11 @@ QueueGraphicsToLoadWithFunc: ; 0x10c5
 ;		 hl: pointer to data
 ;		  a: bank of data
 	push af
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr z, .skip_wait_ly
 .wait_ly
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp $88
 	jr nc, .wait_ly
 .skip_wait_ly
@@ -1272,16 +1272,16 @@ QueueGraphicsToLoadWithFunc: ; 0x10c5
 	ld [hl], e
 	ld hl, wd7fb
 	inc [hl]
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	ret nz
-	ld a, [rIE]
+	ldh a, [rIE]
 	push af
 	res 0, a
-	ld [rIE], a
+	ldh [rIE], a
 	call Func_113a
 	pop af
-	ld [rIE], a
+	ldh [rIE], a
 	ret
 
 Func_1129: ; 0x1129
@@ -1372,10 +1372,10 @@ LoadTileLists: ; 0x117b
 
 LoadTileListsBank1: ; 0x118d
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	call LoadTileLists
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	ret
 
 Func_1198:
@@ -1430,10 +1430,10 @@ Func_11b5: ; 11b5 (0:11b5)
 
 Func_11c7:
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	call Func_11b5
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	ret
 
 Func_11d2:
@@ -1521,7 +1521,7 @@ Func_11d2:
 
 Func_122e:
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld h, d
 	ld l, e
 	ldh a, [hLoadedROMBank]
@@ -1531,7 +1531,7 @@ Func_122e:
 	and a
 	jr nz, .asm_1240
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	ret
 
 .asm_1240
diff --git a/home/copy.asm b/home/copy.asm
index 57f54c0..387015f 100644
--- a/home/copy.asm
+++ b/home/copy.asm
@@ -1,17 +1,17 @@
 Func_61b: ; 0x61b
-	ld a, [rLY]  ; LY register (LCDC Y-Coordinate)
+	ldh a, [rLY]  ; LY register (LCDC Y-Coordinate)
 	cp $40
 	jr c, .asm_625
 	cp $80
 	jr c, .asm_63d
 .asm_625
-	ld a, [rLY]  ; LY register (LCDC Y-Coordinate)
+	ldh a, [rLY]  ; LY register (LCDC Y-Coordinate)
 	cp $40
 	jr c, .asm_625
 	cp $80
 	jr nc, .asm_625
 .asm_62f
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, .asm_62f  ; wait for lcd controller to finish transferring data
 	ld a, $15
@@ -189,7 +189,7 @@ LoadVideoData: ; 0x6a4
 	rr c
 	rl a
 	and $1  ; checks bit 1 of the last word in the data struct
-	ld [rVBK], a  ; set VRAM Bank
+	ldh [rVBK], a  ; set VRAM Bank
 .copyByte
 	ld a, [hli]
 	ld [de], a
@@ -199,7 +199,7 @@ LoadVideoData: ; 0x6a4
 	or b  ; does bc = 0?
 	jr nz, .copyByte
 	xor a
-	ld [rVBK], a  ; set VRAM Bank to Bank 0
+	ldh [rVBK], a  ; set VRAM Bank to Bank 0
 	pop af
 	ldh [hLoadedROMBank], a
 	ld [MBC5RomBank], a  ; reload the previous ROM Bank
@@ -281,7 +281,7 @@ LoadVRAMData: ; 0x73f
 .loop
 	call Func_61b
 .waitForHBlank
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, .waitForHBlank
 	ld a, [hli]
@@ -416,7 +416,7 @@ Func_7dc: ; 0x7dc
 .asm_80e
 	call Func_61b
 .asm_811
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, .asm_811
 	ld a, [hli]
@@ -473,7 +473,7 @@ PutTileInVRAM: ; 0x848
 	call WaitForLCD
 	call Func_61b
 .asm_84f
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, .asm_84f  ; wait for lcd controller to finish transferring data
 	pop af
@@ -485,15 +485,15 @@ Func_858: ; 0x858
 	call WaitForLCD
 	call Func_61b
 .asm_85f
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, .asm_85f
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	pop af
 	ld [hl], a
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	ret
 
 LoadBillboardPaletteMap: ; 0x86f
@@ -504,11 +504,11 @@ LoadBillboardPaletteMap: ; 0x86f
 	ldh a, [hROMBankBuffer]
 	ldh [hLoadedROMBank], a
 	ld [MBC5RomBank], a
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr nz, .asm_8ac
 	ld a, $1
-	ld [rVBK], a
+	ldh [rVBK], a
 	ld b, $4
 .loop
 	push bc
@@ -536,7 +536,7 @@ LoadBillboardPaletteMap: ; 0x86f
 	dec b
 	jr nz, .loop
 	xor a
-	ld [rVBK], a
+	ldh [rVBK], a
 	pop af
 	ldh [hLoadedROMBank], a
 	ld [MBC5RomBank], a
@@ -586,7 +586,7 @@ Func_8e1: ; 0x8e1
 	ldh a, [hROMBankBuffer]
 	ldh [hLoadedROMBank], a
 	ld [MBC5RomBank], a
-	ld a, [rLCDC]
+	ldh a, [rLCDC]
 	bit 7, a
 	jr nz, .asm_902
 	ld a, c
diff --git a/home/ir.asm b/home/ir.asm
index bf70f09..6ec0fdb 100644
--- a/home/ir.asm
+++ b/home/ir.asm
@@ -1,6 +1,6 @@
 Func_1be3: ; 0x1be3
 	ld a, $c0
-	ld [rRP], a
+	ldh [rRP], a
 	ld a, $ff
 	ld [wd8ea], a
 	xor a
@@ -11,7 +11,7 @@ Func_1be3: ; 0x1be3
 	inc b
 	jr nz, .loop
 	ld hl, wd8eb
-	ld a, [rKEY1]
+	ldh a, [rKEY1]
 	bit 7, a
 	jr z, .normalSpeed
 	ld [hl], $e
@@ -40,7 +40,7 @@ Func_1be3: ; 0x1be3
 Func_1c1b: ; 0x1c1b
 	inc d
 	ret z
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	bit 1, a
 	jr z, Func_1c1b
 	ret
@@ -48,14 +48,14 @@ Func_1c1b: ; 0x1c1b
 Func_1c23: ; 0x1c23
 	inc d
 	ret z
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	bit 1, a
 	jr nz, Func_1c23
 	ret
 
 Func_1c2b: ; 0x1c2b
 	ld a, $c1
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 .asm_1c2e
 	dec d
 	jr nz, .asm_1c2e
@@ -63,7 +63,7 @@ Func_1c2b: ; 0x1c2b
 
 Func_1c32: ; 0x1c32
 	ld a, $c0
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 .asm_1c35
 	dec d
 	jr nz, .asm_1c35
@@ -77,7 +77,7 @@ Func_1c39:
 .asm_1c41
 	ld b, $2
 	ld c, rRP % $100
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	and b
 	jr z, Func_1c50
 	ldh a, [hNumFramesSinceLastVBlank]
@@ -171,7 +171,7 @@ Func_1ca1: ; 0x1ca1
 
 Func_1cef:
 	xor a
-	ld [rRP], a
+	ldh [rRP], a
 	ld a, $ff
 	ld [wd8ea], a
 	ret
diff --git a/home/joypad.asm b/home/joypad.asm
index e6351bb..84b2754 100644
--- a/home/joypad.asm
+++ b/home/joypad.asm
@@ -4,28 +4,28 @@ ReadJoypad: ; 0xab8
 ; some registers the game uses during gameplay. It remembers the joypad state
 ; from the current frame, previous frame, and two frames ago.
 	ld a, $20
-	ld [rJOYP], a
-	ld a, [rJOYP]
-	ld a, [rJOYP]
+	ldh [rJOYP], a
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
 	and $f
 	swap a
 	ld b, a
 	ld a, $30
-	ld [rJOYP], a
+	ldh [rJOYP], a
 	ld a, $10
-	ld [rJOYP], a
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
+	ldh [rJOYP], a
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
 	and $f
 	or b
 	cpl  ; a contains currently-pressed buttons
 	ldh [hJoypadState], a
 	ld a, $30
-	ld [rJOYP], a
+	ldh [rJOYP], a
 	ldh a, [hJoypadState]
 	ld hl, hPreviousJoypadState
 	xor [hl]  ; a contains buttons that are different from previous frame
diff --git a/home/palettes.asm b/home/palettes.asm
index 468d9dd..61a8064 100644
--- a/home/palettes.asm
+++ b/home/palettes.asm
@@ -16,14 +16,14 @@ SetAllPalettesWhite: ; 0xb66
 	ld c, $20
 .asm_b7d
 	ld a, b
-	ld [rBGPI], a
+	ldh [rBGPI], a
 	inc b
-	ld a, [rBGPD]
+	ldh a, [rBGPD]
 	ld [hli], a
 	ld a, b
-	ld [rBGPI], a
+	ldh [rBGPI], a
 	inc b
-	ld a, [rBGPD]
+	ldh a, [rBGPD]
 	ld [hli], a
 	dec c
 	jr nz, .asm_b7d
@@ -31,14 +31,14 @@ SetAllPalettesWhite: ; 0xb66
 	ld c, $20
 .asm_b92
 	ld a, b
-	ld [rOBPI], a
+	ldh [rOBPI], a
 	inc b
-	ld a, [rOBPD]
+	ldh a, [rOBPD]
 	ld [hli], a
 	ld a, b
-	ld [rOBPI], a
+	ldh [rOBPI], a
 	inc b
-	ld a, [rOBPD]
+	ldh a, [rOBPD]
 	ld [hli], a
 	dec c
 	jr nz, .asm_b92
@@ -369,16 +369,16 @@ FadeOutStep: ; 0xd11
 
 SetFadedPalettes: ; 0d61
 ; Sets the current palette data to the faded palettes.
-	ld a, [rIE]
+	ldh a, [rIE]
 	res 0, a
-	ld [rIE], a
+	ldh [rIE], a
 	ld hl, wFadeBGPaletteData
 	ld de, rBGPI
 	ld a, $80
 	ld [de], a
 	inc de
 .waitForVBlank
-	ld a, [rLY]
+	ldh a, [rLY]
 	cp $90
 	jr c, .waitForVBlank
 	ld b, $10
@@ -409,9 +409,9 @@ SetFadedPalettes: ; 0d61
 	ld [de], a
 	dec b
 	jr nz, .loadOBJColorsLoop
-	ld a, [rIE]
+	ldh a, [rIE]
 	set 0, a
-	ld [rIE], a
+	ldh [rIE], a
 	ret
 
 LoadCurrentPalettesIntoFadePalettes: ; 0xd9d
@@ -424,27 +424,27 @@ LoadCurrentPalettesIntoFadePalettes: ; 0xd9d
 .asm_da4
 	call Func_61b
 .asm_da7
-	ld a, [rSTAT]
+	ldh a, [rSTAT]
 	and $3
 	jr nz, .asm_da7  ; wait for lcd controller to finish transferring data
 	ld a, b
 	ld [de], a
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	ld [hli], a
 	inc b
 	ld a, b
 	ld [de], a
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	ld [hli], a
 	inc b
 	ld a, b
 	ld [de], a
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	ld [hli], a
 	inc b
 	ld a, b
 	ld [de], a
-	ld a, [$ff00+c]
+	ldh a, [$ff00+c]
 	ld [hli], a
 	inc b
 	nop
diff --git a/home/serial.asm b/home/serial.asm
index 676da86..fde7ee3 100644
--- a/home/serial.asm
+++ b/home/serial.asm
@@ -41,11 +41,11 @@ Func_1502: ; 1502 (0:1502)
 	ld hl, SerialTranfserData_18ff
 	add hl, bc
 	ld a, [hl]
-	ld [rSB], a
+	ldh [rSB], a
 	ld a, $1
-	ld [rSC], a
+	ldh [rSC], a
 	ld a, $81
-	ld [rSC], a
+	ldh [rSC], a
 	ld a, [wd8b9]
 	cp $2
 	ret nz
@@ -65,10 +65,10 @@ Func_1527: ; 1527 (0:1527)
 	ld a, [wd8bc]
 	ld h, a
 	add hl, bc
-	ld a, [rSB]
+	ldh a, [rSB]
 	ld [wd8c8 + 1], a
 	ld a, [hl]
-	ld [rSB], a
+	ldh [rSB], a
 	ld l, a
 	ld a, [wd8c3]
 	add l
@@ -77,9 +77,9 @@ Func_1527: ; 1527 (0:1527)
 	adc $0
 	ld [wd8c4], a
 	ld a, $1
-	ld [rSC], a
+	ldh [rSC], a
 	ld a, $81
-	ld [rSC], a
+	ldh [rSC], a
 	ld hl, wd8b9
 	inc [hl]
 	jr nz, .asm_1560
@@ -159,24 +159,24 @@ Func_15e1: ; 15e1 (0:15e1)
 	ld hl, wd8c3
 	add hl, bc
 	ld a, [hl]
-	ld [rSB], a
+	ldh [rSB], a
 	ld a, $1
-	ld [rSC], a
+	ldh [rSC], a
 	ld a, $81
-	ld [rSC], a
+	ldh [rSC], a
 	ld hl, wd8b2
 	inc [hl]
 	ret
 
 Func_15f8: ; 15f8 (0:15f8)
-	ld a, [rSB]
+	ldh a, [rSB]
 	ld [wd8c8], a
 	xor a
-	ld [rSB], a
+	ldh [rSB], a
 	ld a, $1
-	ld [rSC], a
+	ldh [rSC], a
 	ld a, $81
-	ld [rSC], a
+	ldh [rSC], a
 	ld hl, wd8c6
 	inc [hl]
 	ld a, [hl]
@@ -193,7 +193,7 @@ Func_1612: ; 1612 (0:1612)
 	jr z, .asm_1625
 	ld [wd86e + 1], a
 .asm_1625
-	ld a, [rSB]
+	ldh a, [rSB]
 	ld [wd8c7], a
 	cp $ff
 	jr nz, .asm_163a
@@ -229,13 +229,13 @@ Func_165f: ; 165f (0:165f)
 
 Func_1660:
 	xor a
-	ld [rSC], a
+	ldh [rSC], a
 Func_1663: ; 1663 (0:1663)
 	ret
 
 Func_1664:
 	push af
-	ld a, [rSC]
+	ldh a, [rSC]
 	bit 7, a
 	jr nz, .asm_1679
 	push bc
@@ -273,14 +273,14 @@ Func_167b: ; 0x167b
 
 Func_169d:
 	xor a
-	ld [rSC], a
-	ld [rSB], a
+	ldh [rSC], a
+	ldh [rSB], a
 	; fallthrough
 
 Func_16a2: ; 0x16a2
 	xor a
-	ld [rSB], a
-	ld [rSC], a
+	ldh [rSB], a
+	ldh [rSC], a
 	ld [wd8ad], a
 	dec a
 	ld [wd8c7], a
@@ -805,10 +805,10 @@ Func_19e5: ; 0x19e5
 	ld [wd8b9], a
 	ld [wd8db], a
 	ld a, [SerialTranfserData_18ff]
-	ld [rSB], a
+	ldh [rSB], a
 	ld a, $1
-	ld [rSC], a
+	ldh [rSC], a
 	ld a, $81
-	ld [rSC], a
+	ldh [rSC], a
 	ld a, $f0
 	ret
diff --git a/home/sgb.asm b/home/sgb.asm
index f9f9b88..326c9c4 100644
--- a/home/sgb.asm
+++ b/home/sgb.asm
@@ -14,9 +14,9 @@ FarSendSGBPackets: ; 0x12a1
 .loop
 	push bc
 	ld a, $0
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	ld a, $30
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	ld b, $10
 .inner_loop
 	ld e, $8
@@ -28,18 +28,18 @@ FarSendSGBPackets: ; 0x12a1
 	jr nz, .got_data
 	ld a, $20
 .got_data
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	ld a, $30
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	rr d
 	dec e
 	jr nz, .innermost_loop
 	dec b
 	jr nz, .inner_loop
 	ld a, $20
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	ld a, $30
-	ld [$ff00+c], a
+	ldh [$ff00+c], a
 	pop bc
 	dec b
 	jr z, .quit
@@ -69,30 +69,30 @@ InitSGB: ; 0x12f8
 	ld hl, Data_38010
 	call FarSendSGBPackets
 	call SGBWait7000
-	ld a, [rJOYP]
+	ldh a, [rJOYP]
 	and $3
 	cp $3
 	jr nz, .asm_1346
 	ld a, $20
-	ld [rJOYP], a
-	ld a, [rJOYP]
-	ld a, [rJOYP]
+	ldh [rJOYP], a
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
 	ld a, $30
-	ld [rJOYP], a
+	ldh [rJOYP], a
 	ld a, $10
-	ld [rJOYP], a
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
+	ldh [rJOYP], a
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
 	ld a, $30
-	ld [rJOYP], a
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
-	ld a, [rJOYP]
+	ldh [rJOYP], a
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
+	ldh a, [rJOYP]
 	and $3
 	cp $3
 	jr nz, .asm_1346
@@ -121,7 +121,7 @@ FarSendSGBPacket_BGMapRows: ; 0x1353
 	push af
 	push hl
 	ld a, $e4
-	ld [rBGP], a
+	ldh [rBGP], a
 	ld de, $0010
 	add hl, de
 	ld de, vTilesSH ; tiles
@@ -141,7 +141,7 @@ FarSendSGBPacket_BGMapRows: ; 0x1353
 	dec c
 	jr nz, .row
 	ld a, $81
-	ld [rLCDC], a
+	ldh [rLCDC], a
 	ld bc, $0005
 	call SGBWait1750
 	pop hl
@@ -150,9 +150,9 @@ FarSendSGBPacket_BGMapRows: ; 0x1353
 	ld bc, $0006
 	call SGBWait1750
 	ldh a, [hBGP]
-	ld [rBGP], a
+	ldh [rBGP], a
 	ldh a, [hLCDC]
-	ld [rLCDC], a
+	ldh [rLCDC], a
 	pop af
 	ldh [hLoadedROMBank], a
 	ld [MBC5RomBank], a