diff --git a/asm/non_matching/code_0807CC3C/sub_0807D46C.inc b/asm/non_matching/code_0807CC3C/sub_0807D46C.inc
deleted file mode 100644
index ad1dee94..00000000
--- a/asm/non_matching/code_0807CC3C/sub_0807D46C.inc
+++ /dev/null
@@ -1,346 +0,0 @@
-
-	.syntax unified
-
-	.text
-
-	push {r4, r5, r6, r7, lr}
-	mov r7, sl
-	mov r6, sb
-	mov r5, r8
-	push {r5, r6, r7}
-	sub sp, #8
-	str r0, [sp]
-	str r1, [sp, #4]
-	ldr r0, _0807D494 @ =gRoomControls
-	ldrb r2, [r0, #0x10]
-	mov sb, r0
-	cmp r2, #1
-	bne _0807D488
-	b _0807D5C4
-_0807D488:
-	cmp r2, #1
-	bgt _0807D498
-	cmp r2, #0
-	beq _0807D4A4
-	b _0807D6CC
-	.align 2, 0
-_0807D494: .4byte gRoomControls
-_0807D498:
-	cmp r2, #2
-	beq _0807D4A4
-	cmp r2, #3
-	bne _0807D4A2
-	b _0807D5C4
-_0807D4A2:
-	b _0807D6CC
-_0807D4A4:
-	mov r1, sb
-	movs r2, #0xa
-	ldrsh r0, [r1, r2]
-	ldrh r1, [r1, #6]
-	subs r5, r0, r1
-	cmp r5, #7
-	ble _0807D4B4
-	subs r5, #8
-_0807D4B4:
-	mov r3, sb
-	ldr r0, [r3, #0x30]
-	movs r2, #0x2e
-	ldrsh r0, [r0, r2]
-	subs r0, r0, r1
-	subs r3, r0, #4
-	mov r8, r3
-	cmp r3, #7
-	ble _0807D4CA
-	subs r0, #0xc
-	mov r8, r0
-_0807D4CA:
-	mov r0, sb
-	movs r2, #0xc
-	ldrsh r1, [r0, r2]
-	ldrh r0, [r0, #8]
-	subs r1, r1, r0
-	mov ip, r1
-	cmp r1, #7
-	ble _0807D4E0
-	movs r3, #8
-	rsbs r3, r3, #0
-	add ip, r3
-_0807D4E0:
-	mov r1, sb
-	ldrh r0, [r1, #0x18]
-	lsls r0, r0, #3
-	mov r2, r8
-	subs r0, r2, r0
-	adds r7, r5, #0
-	adds r7, #0xf8
-	cmp r0, r5
-	blt _0807D548
-	mov r1, ip
-	asrs r3, r1, #3
-	lsls r1, r3, #8
-	ldr r2, [sp]
-	adds r1, r2, r1
-	asrs r0, r0, #3
-	lsls r2, r0, #1
-	adds r4, r1, r2
-	movs r1, #0x1f
-	ands r0, r1
-	lsls r0, r0, #1
-	ldr r2, [sp, #4]
-	adds r6, r2, r0
-	ands r3, r1
-	lsls r2, r3, #5
-	mov r3, sb
-	ldrh r0, [r3, #0x20]
-	lsls r1, r0, #0x10
-	lsrs r0, r1, #0x10
-	cmp r0, #0xaf
-	bhi _0807D520
-	lsrs r3, r1, #0x13
-	b _0807D522
-_0807D520:
-	movs r3, #0x16
-_0807D522:
-	adds r7, r5, #0
-	adds r7, #0xf8
-	cmp r3, #0
-	ble _0807D548
-	ldr r0, _0807D55C @ =0x000003FF
-	mov sl, r0
-_0807D52E:
-	lsls r0, r2, #1
-	adds r0, r0, r6
-	ldrh r1, [r4]
-	strh r1, [r0]
-	movs r1, #0x80
-	lsls r1, r1, #1
-	adds r4, r4, r1
-	adds r2, #0x20
-	mov r0, sl
-	ands r2, r0
-	subs r3, #1
-	cmp r3, #0
-	bgt _0807D52E
-_0807D548:
-	mov r1, sb
-	ldrh r0, [r1, #0x18]
-	adds r0, #1
-	lsls r0, r0, #3
-	add r0, r8
-	ldrh r2, [r1, #0x1e]
-	cmp r7, r2
-	blt _0807D560
-	adds r1, r7, #0
-	b _0807D566
-	.align 2, 0
-_0807D55C: .4byte 0x000003FF
-_0807D560:
-	movs r3, #0x80
-	lsls r3, r3, #1
-	adds r1, r5, r3
-_0807D566:
-	cmp r0, r1
-	blt _0807D56C
-	b _0807D6CC
-_0807D56C:
-	mov r1, ip
-	asrs r3, r1, #3
-	lsls r1, r3, #8
-	ldr r2, [sp]
-	adds r1, r2, r1
-	asrs r0, r0, #3
-	lsls r2, r0, #1
-	adds r4, r1, r2
-	movs r1, #0x1f
-	ands r0, r1
-	lsls r0, r0, #1
-	ldr r2, [sp, #4]
-	adds r6, r2, r0
-	ands r3, r1
-	lsls r2, r3, #5
-	mov r3, sb
-	ldrh r0, [r3, #0x20]
-	lsls r1, r0, #0x10
-	lsrs r0, r1, #0x10
-	cmp r0, #0xaf
-	bhi _0807D59A
-	lsrs r3, r1, #0x13
-	b _0807D59C
-_0807D59A:
-	movs r3, #0x16
-_0807D59C:
-	cmp r3, #0
-	bgt _0807D5A2
-	b _0807D6CC
-_0807D5A2:
-	movs r7, #0x80
-	lsls r7, r7, #1
-	ldr r5, _0807D5C0 @ =0x000003FF
-_0807D5A8:
-	lsls r0, r2, #1
-	adds r0, r0, r6
-	ldrh r1, [r4]
-	strh r1, [r0]
-	adds r4, r4, r7
-	adds r2, #0x20
-	ands r2, r5
-	subs r3, #1
-	cmp r3, #0
-	bgt _0807D5A8
-	b _0807D6CC
-	.align 2, 0
-_0807D5C0: .4byte 0x000003FF
-_0807D5C4:
-	mov r1, sb
-	movs r2, #0xc
-	ldrsh r0, [r1, r2]
-	ldrh r2, [r1, #8]
-	subs r5, r0, r2
-	cmp r5, #7
-	ble _0807D5D4
-	subs r5, #8
-_0807D5D4:
-	mov r3, sb
-	movs r0, #0xa
-	ldrsh r1, [r3, r0]
-	ldrh r0, [r3, #6]
-	subs r1, r1, r0
-	mov r8, r1
-	cmp r1, #7
-	ble _0807D5EA
-	movs r1, #8
-	rsbs r1, r1, #0
-	add r8, r1
-_0807D5EA:
-	mov r3, sb
-	ldr r0, [r3, #0x30]
-	movs r1, #0x32
-	ldrsh r0, [r0, r1]
-	subs r0, r0, r2
-	subs r2, r0, #4
-	mov ip, r2
-	cmp r2, #7
-	ble _0807D600
-	subs r0, #0xc
-	mov ip, r0
-_0807D600:
-	mov r3, sb
-	ldrh r0, [r3, #0x18]
-	lsls r0, r0, #3
-	mov r1, ip
-	subs r0, r1, r0
-	adds r7, r5, #0
-	adds r7, #0xa8
-	movs r2, #0xb0
-	adds r2, r2, r5
-	mov sl, r2
-	cmp r0, r5
-	blt _0807D66A
-	asrs r2, r0, #3
-	lsls r0, r2, #8
-	ldr r3, [sp]
-	adds r0, r3, r0
-	mov r1, r8
-	asrs r3, r1, #3
-	lsls r1, r3, #1
-	adds r4, r0, r1
-	movs r0, #0x1f
-	ands r2, r0
-	lsls r2, r2, #6
-	ldr r1, [sp, #4]
-	adds r6, r1, r2
-	adds r2, r0, #0
-	ands r2, r3
-	mov r3, sb
-	ldrh r0, [r3, #0x1e]
-	lsls r1, r0, #0x10
-	lsrs r0, r1, #0x10
-	cmp r0, #0xff
-	bhi _0807D646
-	lsrs r3, r1, #0x13
-	b _0807D648
-_0807D646:
-	movs r3, #0x20
-_0807D648:
-	adds r7, r5, #0
-	adds r7, #0xa8
-	adds r5, #0xb0
-	mov sl, r5
-	cmp r3, #0
-	ble _0807D66A
-	movs r5, #0x1f
-_0807D656:
-	lsls r0, r2, #1
-	adds r0, r0, r6
-	ldrh r1, [r4]
-	strh r1, [r0]
-	adds r4, #2
-	adds r2, #1
-	ands r2, r5
-	subs r3, #1
-	cmp r3, #0
-	bgt _0807D656
-_0807D66A:
-	mov r1, sb
-	ldrh r0, [r1, #0x18]
-	adds r0, #1
-	lsls r0, r0, #3
-	add r0, ip
-	mov r2, sl
-	ldrh r1, [r1, #0x20]
-	cmp r7, r1
-	blt _0807D67E
-	adds r2, r7, #0
-_0807D67E:
-	cmp r0, r2
-	bge _0807D6CC
-	asrs r2, r0, #3
-	lsls r0, r2, #8
-	ldr r1, [sp]
-	adds r0, r1, r0
-	mov r1, r8
-	asrs r3, r1, #3
-	lsls r1, r3, #1
-	adds r4, r0, r1
-	movs r0, #0x1f
-	ands r2, r0
-	lsls r2, r2, #6
-	ldr r1, [sp, #4]
-	adds r6, r1, r2
-	adds r2, r0, #0
-	ands r2, r3
-	mov r3, sb
-	ldrh r0, [r3, #0x1e]
-	lsls r1, r0, #0x10
-	lsrs r0, r1, #0x10
-	cmp r0, #0xff
-	bhi _0807D6B0
-	lsrs r3, r1, #0x13
-	b _0807D6B2
-_0807D6B0:
-	movs r3, #0x20
-_0807D6B2:
-	cmp r3, #0
-	ble _0807D6CC
-	movs r5, #0x1f
-_0807D6B8:
-	lsls r0, r2, #1
-	adds r0, r0, r6
-	ldrh r1, [r4]
-	strh r1, [r0]
-	adds r4, #2
-	adds r2, #1
-	ands r2, r5
-	subs r3, #1
-	cmp r3, #0
-	bgt _0807D6B8
-_0807D6CC:
-	add sp, #8
-	pop {r3, r4, r5}
-	mov r8, r3
-	mov sb, r4
-	mov sl, r5
-	pop {r4, r5, r6, r7, pc}
-
-	.syntax divided
diff --git a/src/screenTilemap.c b/src/screenTilemap.c
index a57a0cf8..55ad4a55 100644
--- a/src/screenTilemap.c
+++ b/src/screenTilemap.c
@@ -80,7 +80,136 @@ void sub_0807D280(u16* mapspecial, u16* bgbuffer) {
     }
 }
 
-ASM_FUNC("asm/non_matching/code_0807CC3C/sub_0807D46C.inc", void sub_0807D46C(u32 unk_1, u32 unk_2))
+void sub_0807D46C(u16* mapSpecial, u16* bgBuffer) {
+    s32 index, r0, r1, r2, r5, r8, r12;
+    u16 *r4, *r6;
+
+    switch (gRoomControls.scroll_direction) {
+        case 0:
+        case 2:
+            r5 = gRoomControls.scroll_x - gRoomControls.origin_x;
+            if (r5 > 7) {
+                r5 -= 8;
+            }
+
+            r8 = (gRoomControls.camera_target)->x.HALF.HI - gRoomControls.origin_x - 4;
+            if (r8 > 7) {
+                r8 = r8 - 8;
+            }
+
+            r12 = gRoomControls.scroll_y - gRoomControls.origin_y;
+            if (r12 > 7) {
+                r12 -= 8;
+            }
+
+            r0 = r8 - (gRoomControls.unk_18 * 8);
+            if (r0 >= r5) {
+                r4 = mapSpecial + ((r12 >> 3) * 0x80) + (r0 >> 3);
+                r6 = bgBuffer + ((r0 >> 3) & 0x1f);
+                r2 = ((r12 >> 3) & 0x1f) << 5;
+
+                if (gRoomControls.height < 0xb0) {
+                    index = gRoomControls.height >> 0x3;
+                } else {
+                    index = 0x16;
+                }
+
+                while (index > 0) {
+                    // TODO r4 index with index
+                    r6[r2] = *r4;
+                    r4 += 0x80;
+                    r2 = (r2 + 0x20) & 0x3ff;
+                    index--;
+                }
+            }
+
+            r0 = (gRoomControls.unk_18 + 1) * 8 + r8;
+            if (r5 + 0xf8 >= gRoomControls.width) {
+                r1 = r5 + 0xf8;
+            } else {
+                r1 = r5 + 0x100;
+            }
+            if (r0 < r1) {
+                r4 = mapSpecial + ((r12 >> 3) * 0x80) + (r0 >> 3);
+                r6 = bgBuffer + ((r0 >> 3) & 0x1f);
+                r2 = (r12 >> 3 & 0x1f) << 5;
+
+                if (gRoomControls.height < 0xb0) {
+                    index = gRoomControls.height >> 3;
+                } else {
+                    index = 0x16;
+                }
+
+                while (index > 0) {
+                    r6[r2] = *r4;
+                    r4 += 0x80;
+                    r2 = (r2 + 0x20) & 0x3ff;
+                    index--;
+                }
+            }
+            break;
+        case 1:
+        case 3:
+            r5 = gRoomControls.scroll_y - gRoomControls.origin_y;
+            if (r5 > 7) {
+                r5 -= 8;
+            }
+
+            r8 = gRoomControls.scroll_x - gRoomControls.origin_x;
+            if (r8 > 7) {
+                r8 -= 8;
+            }
+
+            r12 = (gRoomControls.camera_target)->y.HALF.HI - gRoomControls.origin_y - 4;
+            if (r12 > 7) {
+                r12 = r12 - 8;
+            }
+
+            r0 = r12 + gRoomControls.unk_18 * -8;
+            if (r0 >= r5) {
+                r4 = mapSpecial + ((r0 >> 3) * 0x80) + (r8 >> 3);
+                r6 = bgBuffer + (((r0 >> 3) & 0x1f) << 5);
+                r2 = ((r8 >> 3) & 0x1f);
+
+                if (gRoomControls.width < 0x100) {
+                    index = gRoomControls.width >> 3;
+                } else {
+                    index = 0x20;
+                }
+
+                while (index > 0) {
+                    r6[r2] = *r4;
+                    r4 += 1;
+                    r2 = (r2 + 1) & 0x1f;
+                    index--;
+                }
+            }
+
+            r0 = (gRoomControls.unk_18 + 1) * 8 + r12;
+            if (r5 + 0xa8 >= gRoomControls.height) {
+                r2 = r5 + 0xa8;
+            } else {
+                r2 = r5 + 0xb0;
+            }
+            if (r0 < r2) {
+                r4 = mapSpecial + ((r0 >> 3) * 0x80) + (r8 >> 3);
+                r6 = bgBuffer + (((r0 >> 3) & 0x1f) << 5);
+                r2 = ((r8 >> 3) & 0x1f);
+                if (gRoomControls.width < 0x100) {
+                    index = gRoomControls.width >> 3;
+                } else {
+                    index = 0x20;
+                }
+                while (index > 0) {
+                    r6[r2] = *r4;
+                    r4 += 0x1;
+                    r2 = (r2 + 0x1) & 0x1f;
+                    index--;
+                }
+            }
+            break;
+    }
+}
 
 void sub_0807D6D8(u16* mapSpecial, u16* bgBuffer) {
     s32 Unk1a;