diff --git a/asm/rom_4CEA8.s b/asm/rom_4CEA8.s
index 41f6e3c..1135899 100644
--- a/asm/rom_4CEA8.s
+++ b/asm/rom_4CEA8.s
@@ -6842,61 +6842,3 @@ _080507C0:
 	bx r0
 	.align 2, 0
 _080507D0: .4byte gUnknown_086B0FAC
-
-	thumb_func_start sub_507D4
-sub_507D4: @ 0x080507D4
-	push {r4, r5, lr}
-	movs r1, #0
-	ldr r0, _08050834 @ =gCurrentPinballGame
-	ldr r4, [r0]
-	movs r2, #0xc2
-	lsls r2, r2, #2
-	adds r0, r4, r2
-	ldrh r0, [r0]
-	cmp r0, #0x63
-	bls _080507F8
-	ldr r1, _08050838 @ =0x0000070C
-	adds r0, r4, r1
-	ldrh r0, [r0]
-	movs r1, #0x14
-	bl __umodsi3
-	lsls r0, r0, #0x10
-	lsrs r1, r0, #0x12
-_080507F8:
-	lsls r0, r1, #3
-	ldr r2, _0805083C @ =gUnknown_086B0E6C
-	adds r3, r0, r2
-	adds r5, r2, #0
-	adds r5, #0x28
-	adds r0, r4, #0
-	adds r0, #0x6a
-	movs r1, #0
-	ldrsh r0, [r0, r1]
-	cmp r0, #0xaf
-	bgt _0805081E
-	ldr r1, _08050840 @ =0x040000D4
-	ldr r0, [r3]
-	str r0, [r1]
-	ldr r0, [r2, #0x28]
-	str r0, [r1, #4]
-	ldr r0, _08050844 @ =0x80000020
-	str r0, [r1, #8]
-	ldr r0, [r1, #8]
-_0805081E:
-	ldr r1, _08050840 @ =0x040000D4
-	ldr r0, [r3, #4]
-	str r0, [r1]
-	ldr r0, [r5, #4]
-	str r0, [r1, #4]
-	ldr r0, _08050844 @ =0x80000020
-	str r0, [r1, #8]
-	ldr r0, [r1, #8]
-	pop {r4, r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08050834: .4byte gCurrentPinballGame
-_08050838: .4byte 0x0000070C
-_0805083C: .4byte gUnknown_086B0E6C
-_08050840: .4byte 0x040000D4
-_08050844: .4byte 0x80000020
diff --git a/expected_objs/sub_507D4.o b/expected_objs/sub_507D4.o
deleted file mode 100644
index b2e110a..0000000
Binary files a/expected_objs/sub_507D4.o and /dev/null differ
diff --git a/include/global.h b/include/global.h
index d93392c..b733dd9 100644
--- a/include/global.h
+++ b/include/global.h
@@ -604,7 +604,8 @@ struct PinballGame
     /*0x6E4*/ struct Vector16 unk6E4;
     /*0x6E8*/ u8 filler6E8[0x6];
     /*0x6EE*/ u16 unk6EE;
-    /*0x6F0*/ u8 filler6F0[0x1E];
+    /*0x6F0*/ u8 filler6F0[0x1C];
+    /*0x70C*/ u16 unk70C;
     /*0x70E*/ s8 unk70E;
     /*0x70F*/ s8 unk70F;
     /*0x710*/ s8 hLight; // 'H' light indicator in Ruby/Sapphire field
diff --git a/src/rom_50AD4.c b/src/rom_50AD4.c
index de32510..9c70086 100644
--- a/src/rom_50AD4.c
+++ b/src/rom_50AD4.c
@@ -1,6 +1,33 @@
 #include "global.h"
 #include "main.h"
 
+struct Unk_086B0E6C
+{
+    const u8 *unk0[5][2];
+    u8 *unk28[2];
+};
+extern const struct Unk_086B0E6C gUnknown_086B0E6C;
+
+void sub_507D4(void)
+{
+    s16 index;
+    const u8 *const *src;
+    u8 *const *dest;
+
+    index = 0;
+    if (gCurrentPinballGame->unk308 >= 100)
+        index = (gCurrentPinballGame->unk70C % 20) / 4;
+
+    src = gUnknown_086B0E6C.unk0[index];
+    dest = gUnknown_086B0E6C.unk28;
+    if (gCurrentPinballGame->unk6A < 176)
+    {
+        DmaCopy16(3, src[0], dest[0], 0x40);
+    }
+
+    DmaCopy16(3, src[1], dest[1], 0x40);
+}
+
 void RubyBoardProcess_0A_50848(void)
 {
     s16 i;