diff --git a/test/hwtests/sound/ch3_reset_nop_nr4init_freq7ff_read_ff30_ds_1_cgb04c_out10.asm b/test/hwtests/sound/ch3_reset_nop_nr4init_freq7ff_read_ff30_ds_1_cgb04c_out10.asm
new file mode 100644
index 00000000..7e13ef1f
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nop_nr4init_freq7ff_read_ff30_ds_1_cgb04c_out10.asm
@@ -0,0 +1,130 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	c0
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 30
+	ldff(00), a
+	xor a, a
+	ldff(ff), a
+	inc a
+	ldff(4d), a
+	stop, 00
+	ldff(4d), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	nop
+	ldff(1e), a
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nop_nr4init_freq7ff_read_ff30_ds_2_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nop_nr4init_freq7ff_read_ff30_ds_2_cgb04c_out32.asm
new file mode 100644
index 00000000..afa8f95b
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nop_nr4init_freq7ff_read_ff30_ds_2_cgb04c_out32.asm
@@ -0,0 +1,131 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	c0
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 30
+	ldff(00), a
+	xor a, a
+	ldff(ff), a
+	inc a
+	ldff(4d), a
+	stop, 00
+	ldff(4d), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	nop
+	ldff(1e), a
+	nop
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_1_dmg08_cgb04c_out10.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_1_dmg08_cgb04c_out10.asm
new file mode 100644
index 00000000..511b12f9
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_1_dmg08_cgb04c_out10.asm
@@ -0,0 +1,120 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_2_dmg08_outFF_cgb04c_out10.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_2_dmg08_outFF_cgb04c_out10.asm
new file mode 100644
index 00000000..12055581
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_2_dmg08_outFF_cgb04c_out10.asm
@@ -0,0 +1,121 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_3_dmg08_outFF_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_3_dmg08_outFF_cgb04c_out32.asm
new file mode 100644
index 00000000..b6f0a03b
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_3_dmg08_outFF_cgb04c_out32.asm
@@ -0,0 +1,122 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_4_dmg08_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_4_dmg08_cgb04c_out32.asm
new file mode 100644
index 00000000..6195a4cf
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_read_ff30_4_dmg08_cgb04c_out32.asm
@@ -0,0 +1,123 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	nop
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_1_dmg08_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_1_dmg08_cgb04c_out32.asm
new file mode 100644
index 00000000..1f4ee045
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_1_dmg08_cgb04c_out32.asm
@@ -0,0 +1,123 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	xor a, a
+	ldff(30), a
+	ldff(26), a
+	ldff a, (31)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_2_dmg08_out32_cgb04c_out00.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_2_dmg08_out32_cgb04c_out00.asm
new file mode 100644
index 00000000..5c428e8a
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_2_dmg08_out32_cgb04c_out00.asm
@@ -0,0 +1,124 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	xor a, a
+	nop
+	ldff(30), a
+	ldff(26), a
+	ldff a, (31)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_3_dmg08_cgb04c_out00.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_3_dmg08_cgb04c_out00.asm
new file mode 100644
index 00000000..acfb2548
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_3_dmg08_cgb04c_out00.asm
@@ -0,0 +1,125 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	xor a, a
+	nop
+	nop
+	ldff(30), a
+	ldff(26), a
+	ldff a, (31)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_4_dmg08_out32_cgb04c_out00.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_4_dmg08_out32_cgb04c_out00.asm
new file mode 100644
index 00000000..c9873daa
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fd_write_ff30_4_dmg08_out32_cgb04c_out00.asm
@@ -0,0 +1,126 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fd
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	xor a, a
+	nop
+	nop
+	nop
+	ldff(30), a
+	ldff(26), a
+	ldff a, (31)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_1_dmg08_outFF_cgb04c_out10.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_1_dmg08_outFF_cgb04c_out10.asm
new file mode 100644
index 00000000..8eae4a3e
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_1_dmg08_outFF_cgb04c_out10.asm
@@ -0,0 +1,120 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fe
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_2_dmg08_outFF_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_2_dmg08_outFF_cgb04c_out32.asm
new file mode 100644
index 00000000..d38967b8
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_2_dmg08_outFF_cgb04c_out32.asm
@@ -0,0 +1,121 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fe
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_3_dmg08_outFF_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_3_dmg08_outFF_cgb04c_out32.asm
new file mode 100644
index 00000000..c4a23479
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_3_dmg08_outFF_cgb04c_out32.asm
@@ -0,0 +1,122 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fe
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_4_dmg08_outFF_cgb04c_out54.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_4_dmg08_outFF_cgb04c_out54.asm
new file mode 100644
index 00000000..d2294d56
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7fe_read_ff30_4_dmg08_outFF_cgb04c_out54.asm
@@ -0,0 +1,123 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, fe
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	nop
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_1_dmg08_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_1_dmg08_cgb04c_out32.asm
new file mode 100644
index 00000000..babd3242
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_1_dmg08_cgb04c_out32.asm
@@ -0,0 +1,120 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_2_dmg08_cgb04c_out54.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_2_dmg08_cgb04c_out54.asm
new file mode 100644
index 00000000..57100015
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_2_dmg08_cgb04c_out54.asm
@@ -0,0 +1,121 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_ds_1_cgb04c_out10.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_ds_1_cgb04c_out10.asm
new file mode 100644
index 00000000..c9c03e9a
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_ds_1_cgb04c_out10.asm
@@ -0,0 +1,129 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	c0
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 30
+	ldff(00), a
+	xor a, a
+	ldff(ff), a
+	inc a
+	ldff(4d), a
+	stop, 00
+	ldff(4d), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_ds_2_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_ds_2_cgb04c_out32.asm
new file mode 100644
index 00000000..c6c8cf62
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_read_ff30_ds_2_cgb04c_out32.asm
@@ -0,0 +1,130 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	c0
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 30
+	ldff(00), a
+	xor a, a
+	ldff(ff), a
+	inc a
+	ldff(4d), a
+	stop, 00
+	ldff(4d), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	nop
+	nop
+	ldff a, (30)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7ff_write_ff30_ds_1_cgb04c_out32.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_write_ff30_ds_1_cgb04c_out32.asm
new file mode 100644
index 00000000..b14f6886
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_write_ff30_ds_1_cgb04c_out32.asm
@@ -0,0 +1,131 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	c0
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 30
+	ldff(00), a
+	xor a, a
+	ldff(ff), a
+	inc a
+	ldff(4d), a
+	stop, 00
+	ldff(4d), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	xor a, a
+	ldff(30), a
+	ldff(26), a
+	ldff a, (31)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+
diff --git a/test/hwtests/sound/ch3_reset_nr4init_freq7ff_write_ff30_ds_2_cgb04c_out00.asm b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_write_ff30_ds_2_cgb04c_out00.asm
new file mode 100644
index 00000000..1c0e0322
--- /dev/null
+++ b/test/hwtests/sound/ch3_reset_nr4init_freq7ff_write_ff30_ds_2_cgb04c_out00.asm
@@ -0,0 +1,132 @@
+.size 8000
+
+.text@100
+	jp lbegin
+
+.data@143
+	c0
+
+.text@150
+lbegin:
+	xor a, a
+	ldff(26), a
+	ld a, 30
+	ldff(00), a
+	xor a, a
+	ldff(ff), a
+	inc a
+	ldff(4d), a
+	stop, 00
+	ldff(4d), a
+	ld a, 10
+	ld b, 22
+	ld c, 30
+	ld d, 10
+lbegin_init_wave_ram:
+	ldff(c), a
+	inc c
+	add a, b
+	dec d
+	jrnz lbegin_init_wave_ram
+	ld a, 80
+	ldff(26), a
+	ld a, 80
+	ldff(1a), a
+	ld a, ff
+	ldff(1d), a
+	ld a, 87
+	ldff(1e), a
+	xor a, a
+	nop
+	ldff(30), a
+	ldff(26), a
+	ldff a, (31)
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, 00
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	pop af
+	ld b, a
+	swap a
+	and a, 0f
+	ld(9800), a
+	ld a, b
+	and a, 0f
+	ld(9801), a
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+	00 00 08 08 22 22 41 41
+	7f 7f 41 41 41 41 41 41
+	00 00 7e 7e 41 41 41 41
+	7e 7e 41 41 41 41 7e 7e
+	00 00 3e 3e 41 41 40 40
+	40 40 40 40 41 41 3e 3e
+	00 00 7e 7e 41 41 41 41
+	41 41 41 41 41 41 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 40 40 40 40
+	7f 7f 40 40 40 40 40 40
+