diff --git a/asm/non_matching/manager1B/Manager1B_Main.inc b/asm/non_matching/manager1B/Manager1B_Main.inc
deleted file mode 100644
index 6a4b50b7..00000000
--- a/asm/non_matching/manager1B/Manager1B_Main.inc
+++ /dev/null
@@ -1,72 +0,0 @@
-	.syntax unified
-	push {r4, r5, lr}
-	adds r4, r0, #0
-	bl EntityHasDuplicateID
-	cmp r0, #0
-	beq _0805B3C4
-	bl DeleteThisEntity
-_0805B3C4:
-	ldrb r0, [r4, #0xa]
-	lsls r0, r0, #2
-	ldr r1, _0805B438 @ =gUnk_08108C28
-	adds r5, r0, r1
-	ldrb r0, [r4, #0xc]
-	cmp r0, #0
-	bne _0805B41E
-	movs r0, #1
-	strb r0, [r4, #0xc]
-	ldrb r1, [r4, #0x10]
-	movs r0, #0x20
-	orrs r0, r1
-	strb r0, [r4, #0x10]
-	adds r0, r4, #0
-	movs r1, #6
-	bl sub_0805E3A0
-	ldrb r0, [r4, #0xa]
-	cmp r0, #0
-	beq _0805B3F6
-	ldr r1, _0805B43C @ =sub_0805B4B4
-	adds r0, r4, #0
-	movs r2, #0
-	bl sub_08052D74
-_0805B3F6:
-	ldr r0, _0805B440 @ =gRoomControls
-	ldrh r1, [r0, #0x20]
-	movs r0, #0x80
-	lsls r0, r0, #1
-	subs r1, r0, r1
-	cmp r1, #0
-	bge _0805B406
-	movs r1, #0
-_0805B406:
-	movs r0, #2
-	ldrsb r0, [r5, r0]
-	adds r0, r1, r0
-	str r0, [r4, #0x20]
-	ldr r1, _0805B444 @ =gUnk_08108C54
-	ldrb r0, [r5, #1]
-	lsls r0, r0, #2
-	adds r0, r0, r1
-	ldr r1, [r0]
-	adds r0, r4, #0
-	bl _call_via_r1
-_0805B41E:
-	ldr r0, _0805B440 @ =gRoomControls
-	ldrh r0, [r0]
-	cmp r0, #0
-	bne _0805B436
-	ldr r0, _0805B444 @ =gUnk_08108C54
-	ldrb r1, [r5, #1]
-	lsls r1, r1, #2
-	adds r1, r1, r0
-	ldr r1, [r1]
-	adds r0, r4, #0
-	bl _call_via_r1
-_0805B436:
-	pop {r4, r5, pc}
-	.align 2, 0
-_0805B438: .4byte gUnk_08108C28
-_0805B43C: .4byte sub_0805B4B4
-_0805B440: .4byte gRoomControls
-_0805B444: .4byte gUnk_08108C54
-	.syntax divided
diff --git a/asm/non_matching/manager1B/sub_0805B448.inc b/asm/non_matching/manager1B/sub_0805B448.inc
deleted file mode 100644
index 167281fe..00000000
--- a/asm/non_matching/manager1B/sub_0805B448.inc
+++ /dev/null
@@ -1,23 +0,0 @@
-	.syntax unified
-	push {r4, lr}
-	ldr r4, _0805B46C @ =gScreen
-	ldr r3, _0805B470 @ =gRoomControls
-	movs r2, #0xa
-	ldrsh r1, [r3, r2]
-	ldrh r2, [r3, #6]
-	subs r1, r1, r2
-	asrs r1, r1, #2
-	strh r1, [r4, #0x2e]
-	movs r2, #0xc
-	ldrsh r1, [r3, r2]
-	ldrh r2, [r3, #8]
-	subs r1, r1, r2
-	asrs r1, r1, #1
-	ldr r0, [r0, #0x20]
-	adds r0, r0, r1
-	strh r0, [r4, #0x30]
-	pop {r4, pc}
-	.align 2, 0
-_0805B46C: .4byte gScreen
-_0805B470: .4byte gRoomControls
-	.syntax divided
diff --git a/asm/non_matching/manager1B/sub_0805B474.inc b/asm/non_matching/manager1B/sub_0805B474.inc
deleted file mode 100644
index 59158767..00000000
--- a/asm/non_matching/manager1B/sub_0805B474.inc
+++ /dev/null
@@ -1,31 +0,0 @@
-	.syntax unified
-	push {r4, r5, lr}
-	ldr r5, _0805B4A8 @ =gRoomControls
-	movs r0, #0xc
-	ldrsh r1, [r5, r0]
-	ldrh r4, [r5, #8]
-	subs r1, r1, r4
-	lsls r0, r1, #1
-	adds r0, r0, r1
-	lsls r0, r0, #5
-	ldrh r1, [r5, #0x20]
-	subs r1, #0xa0
-	bl __divsi3
-	ldr r2, _0805B4AC @ =gScreen
-	adds r4, r4, r0
-	strh r4, [r2, #0x30]
-	ldrh r0, [r5, #0x1e]
-	ldr r1, _0805B4B0 @ =0xFFFFFF00
-	adds r0, r0, r1
-	lsrs r1, r0, #0x1f
-	adds r0, r0, r1
-	asrs r0, r0, #1
-	ldrh r1, [r5, #0xa]
-	subs r1, r1, r0
-	strh r1, [r2, #0x2e]
-	pop {r4, r5, pc}
-	.align 2, 0
-_0805B4A8: .4byte gRoomControls
-_0805B4AC: .4byte gScreen
-_0805B4B0: .4byte 0xFFFFFF00
-	.syntax divided
diff --git a/asm/non_matching/manager1B/sub_0805B4B4.inc b/asm/non_matching/manager1B/sub_0805B4B4.inc
deleted file mode 100644
index b0e254c9..00000000
--- a/asm/non_matching/manager1B/sub_0805B4B4.inc
+++ /dev/null
@@ -1,14 +0,0 @@
-	.syntax unified
-	push {r4, lr}
-	adds r4, r0, #0
-	ldrb r0, [r4, #0xa]
-	bl sub_0805B4D0
-	ldrb r0, [r4, #0xa]
-	cmp r0, #2
-	bne _0805B4C8
-	bl sub_0806D0F8
-_0805B4C8:
-	adds r0, r4, #0
-	bl Manager1B_Main
-	pop {r4, pc}
-	.syntax divided
diff --git a/asm/non_matching/manager1B/sub_0805B4D0.inc b/asm/non_matching/manager1B/sub_0805B4D0.inc
deleted file mode 100644
index 8be13a26..00000000
--- a/asm/non_matching/manager1B/sub_0805B4D0.inc
+++ /dev/null
@@ -1,51 +0,0 @@
-	.syntax unified
-	push {r4, r5, lr}
-	adds r5, r0, #0
-	ldr r0, _0805B528 @ =gUnk_08108C5C
-	adds r0, r5, r0
-	ldrb r0, [r0]
-	bl LoadGfxGroup
-	ldr r4, _0805B52C @ =gScreen
-	ldr r0, _0805B530 @ =0x00001E07
-	strh r0, [r4, #0x2c]
-	ldrh r1, [r4]
-	movs r2, #0x80
-	lsls r2, r2, #4
-	adds r0, r2, #0
-	orrs r0, r1
-	strh r0, [r4]
-	ldr r2, _0805B534 @ =gRoomControls
-	movs r1, #0xa
-	ldrsh r0, [r2, r1]
-	ldrh r1, [r2, #6]
-	subs r0, r0, r1
-	asrs r0, r0, #2
-	strh r0, [r4, #0x2e]
-	movs r1, #0xc
-	ldrsh r0, [r2, r1]
-	ldrh r1, [r2, #8]
-	subs r0, r0, r1
-	asrs r3, r0, #1
-	ldrh r1, [r2, #0x20]
-	movs r0, #0x80
-	lsls r0, r0, #1
-	subs r2, r0, r1
-	cmp r2, #0
-	bge _0805B516
-	movs r2, #0
-_0805B516:
-	ldr r0, _0805B538 @ =gUnk_08108C44
-	lsls r1, r5, #1
-	adds r1, r1, r0
-	adds r0, r3, r2
-	ldrh r1, [r1]
-	adds r0, r0, r1
-	strh r0, [r4, #0x30]
-	pop {r4, r5, pc}
-	.align 2, 0
-_0805B528: .4byte gUnk_08108C5C
-_0805B52C: .4byte gScreen
-_0805B530: .4byte 0x00001E07
-_0805B534: .4byte gRoomControls
-_0805B538: .4byte gUnk_08108C44
-	.syntax divided
diff --git a/src/manager/manager1B.c b/src/manager/manager1B.c
index e04dca81..37cb856e 100644
--- a/src/manager/manager1B.c
+++ b/src/manager/manager1B.c
@@ -1,12 +1,83 @@
 
 #include "manager.h"
+#include "functions.h"
+#include "screen.h"
 
-ASM_FUNC("asm/non_matching/manager1B/Manager1B_Main.inc", void Manager1B_Main())
+typedef struct {
+    Manager manager;
+    u32 field_0x20;
+} Manager1B;
 
-ASM_FUNC("asm/non_matching/manager1B/sub_0805B448.inc", void sub_0805B448())
+extern u8 gUnk_08108C28[];
+extern void (*const gUnk_08108C54[])(Manager1B*);
 
-ASM_FUNC("asm/non_matching/manager1B/sub_0805B474.inc", void sub_0805B474())
+void sub_0805B4B4(Manager1B*);
 
-ASM_FUNC("asm/non_matching/manager1B/sub_0805B4B4.inc", void sub_0805B4B4())
+void sub_0806D0F8(void); // in bigGoron?
 
-ASM_FUNC("asm/non_matching/manager1B/sub_0805B4D0.inc", void sub_0805B4D0())
+extern u8 gUnk_08108C5C[];
+extern u16 gUnk_08108C44[];
+
+void Manager1B_Main(Manager1B* this) {
+    s32 iVar3;
+    u8* tmp;
+
+    if (EntityHasDuplicateID((Entity*)this) != 0) {
+        DeleteThisEntity();
+    }
+    tmp = gUnk_08108C28 + this->manager.unk_0a * 4;
+    if (this->manager.action == 0) {
+        this->manager.action = 1;
+        this->manager.unk_10 |= 0x20;
+        sub_0805E3A0(this, 6);
+        if (this->manager.unk_0a != 0) {
+            sub_08052D74(this, sub_0805B4B4, NULL);
+        }
+        iVar3 = 0x100 - (u32)gRoomControls.height;
+        if (iVar3 < 0) {
+            iVar3 = 0;
+        }
+        this->field_0x20 = iVar3 + (s8)tmp[2];
+        gUnk_08108C54[tmp[1]](this);
+    }
+    if (gRoomControls.unk2 == 0) {
+        gUnk_08108C54[tmp[1]](this);
+    }
+}
+
+void sub_0805B448(Manager1B* this) {
+    gScreen.affine.bg3xOffset = (gRoomControls.roomScrollX - gRoomControls.roomOriginX) >> 2;
+    gScreen.affine.bg3yOffset = ((gRoomControls.roomScrollY - gRoomControls.roomOriginY) >> 1) + this->field_0x20;
+}
+
+void sub_0805B474(Manager1B* this) {
+    s32 tmp = ((gRoomControls.roomScrollY - gRoomControls.roomOriginY) * 0x60) /
+                     (gRoomControls.height - 0xa0);
+    gScreen.affine.bg3yOffset = gRoomControls.roomOriginY + tmp;
+    gScreen.affine.bg3xOffset = gRoomControls.roomScrollX - ((gRoomControls.width - 0x100) / 2);
+}
+
+void sub_0805B4B4(Manager1B* this) {
+    sub_0805B4D0(this->manager.unk_0a);
+    if (this->manager.unk_0a == 2) {
+        sub_0806D0F8();
+    }
+    Manager1B_Main(this);
+}
+
+void sub_0805B4D0(u32 param_1) {
+    s32 iVar1;
+    u32 uVar2;
+
+    LoadGfxGroup(gUnk_08108C5C[param_1]);
+    gScreen.affine.bg3Control = 0x1e07;
+    gScreen.lcd.displayControl |= 0x800;
+    gScreen.affine.bg3xOffset = (gRoomControls.roomScrollX - gRoomControls.roomOriginX) >> 2;
+
+    uVar2 = (gRoomControls.roomScrollY - gRoomControls.roomOriginY) >> 1;
+    iVar1 = 0x100 - gRoomControls.height;
+    if (iVar1 < 0) {
+        iVar1 = 0;
+    }
+    gScreen.affine.bg3yOffset = uVar2 + iVar1+gUnk_08108C44[param_1];
+}
diff --git a/src/manager/manager2B.c b/src/manager/manager2B.c
index b3601007..29cc7462 100644
--- a/src/manager/manager2B.c
+++ b/src/manager/manager2B.c
@@ -37,7 +37,7 @@ typedef struct {
     u16 field_0x3e;
 } Manager2B;
 
-extern void (*const gUnk_08108D30[])(Entity*);
+extern void (*const gUnk_08108D30[])(Manager2B*);
 
 extern u8 gEntCount;