From 035c0b0ecd03f890f3f8ed13ae5cdc3f98c941db Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Sun, 19 Nov 2017 18:34:28 -0500
Subject: [PATCH] sub_800C744

---
 asm/link_rfu.s     | 64 ----------------------------------------------
 include/link_rfu.h |  2 +-
 src/link_rfu.c     | 44 +++++++++++++++++++++++++++++--
 3 files changed, 43 insertions(+), 67 deletions(-)

diff --git a/asm/link_rfu.s b/asm/link_rfu.s
index 169279f43..e33e66ed2 100644
--- a/asm/link_rfu.s
+++ b/asm/link_rfu.s
@@ -5,70 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800C744
-sub_800C744: @ 800C744
-	push {r4,lr}
-	adds r3, r0, 0
-	ldr r0, =gUnknown_03004140
-	ldrb r1, [r0, 0x7]
-	adds r4, r0, 0
-	cmp r1, 0x5
-	bne _0800C76E
-	movs r2, 0x1
-	strb r2, [r4, 0x6]
-	strb r1, [r4, 0x4]
-	ldrh r0, [r4, 0x1C]
-	strh r0, [r4, 0x1A]
-	lsls r0, 16
-	cmp r0, 0
-	beq _0800C76C
-	movs r0, 0x6
-	strb r0, [r4, 0x7]
-	b _0800C76E
-	.pool
-_0800C76C:
-	strb r2, [r4, 0x7]
-_0800C76E:
-	ldrb r0, [r4, 0x7]
-	cmp r0, 0x1
-	bne _0800C798
-	strb r0, [r4, 0x6]
-	movs r0, 0x5
-	strb r0, [r4, 0x4]
-	adds r0, r3, 0
-	movs r1, 0x8C
-	bl __umodsi3
-	strh r0, [r4, 0x1A]
-	movs r1, 0x8C
-	subs r1, r0
-	strh r1, [r4, 0x1C]
-	lsls r0, 16
-	cmp r0, 0
-	beq _0800C794
-	movs r0, 0x2
-	b _0800C796
-_0800C794:
-	movs r0, 0x3
-_0800C796:
-	strb r0, [r4, 0x7]
-_0800C798:
-	ldrb r0, [r4, 0x7]
-	cmp r0, 0x3
-	bne _0800C7AE
-	movs r0, 0
-	strb r0, [r4, 0x6]
-	movs r0, 0x28
-	strh r0, [r4, 0x1A]
-	movs r0, 0x4
-	strb r0, [r4, 0x7]
-	movs r0, 0x9
-	strb r0, [r4, 0x4]
-_0800C7AE:
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_800C744
-
 	thumb_func_start sub_800C7B4
 sub_800C7B4: @ 800C7B4
 	push {r4-r7,lr}
diff --git a/include/link_rfu.h b/include/link_rfu.h
index 12ff03330..7c1949bba 100644
--- a/include/link_rfu.h
+++ b/include/link_rfu.h
@@ -62,7 +62,7 @@ struct UnkRfuStruct_1 {
     /* 0x016 */ u16 unk_16;
     /* 0x018 */ u16 unk_18;
     /* 0x01a */ u16 unk_1a;
-    /* 0x01c */ u8 filler_1c[2];
+    /* 0x01c */ u16 unk_1c;
     /* 0x01e */ u16 unk_1e;
     /* 0x020 */ u16 *unk_20;
     /* 0x024 */ u8 unk_24;
diff --git a/src/link_rfu.c b/src/link_rfu.c
index 6e0d3e249..de0b782f8 100644
--- a/src/link_rfu.c
+++ b/src/link_rfu.c
@@ -471,8 +471,8 @@ void sub_800C54C(u32 a0)
         {
             sub_800C744(a0);
         }
-        do {
-
+        do
+        {
             if (gUnknown_03004140.unk_04 != 0)
             {
                 rfu_waitREQComplete();
@@ -569,3 +569,43 @@ void sub_800C54C(u32 a0)
         }
     }
 }
+
+void sub_800C744(u32 a0)
+{
+    if (gUnknown_03004140.unk_07 == 5)
+    {
+        gUnknown_03004140.unk_06 = 1;
+        gUnknown_03004140.unk_04 = 5;
+        gUnknown_03004140.unk_1a = gUnknown_03004140.unk_1c;
+        if (gUnknown_03004140.unk_1a)
+        {
+            gUnknown_03004140.unk_07 = 6;
+        }
+        else
+        {
+            gUnknown_03004140.unk_07 = 1;
+        }
+    }
+    if (gUnknown_03004140.unk_07 == 1)
+    {
+        gUnknown_03004140.unk_06 = 1;
+        gUnknown_03004140.unk_04 = 5;
+        gUnknown_03004140.unk_1a = a0 % 140;
+        gUnknown_03004140.unk_1c = 140 - gUnknown_03004140.unk_1a;
+        if (gUnknown_03004140.unk_1a)
+        {
+            gUnknown_03004140.unk_07 = 2;
+        }
+        else
+        {
+            gUnknown_03004140.unk_07 = 3;
+        }
+    }
+    if (gUnknown_03004140.unk_07 == 3)
+    {
+        gUnknown_03004140.unk_06 = 0;
+        gUnknown_03004140.unk_1a = 40;
+        gUnknown_03004140.unk_07 = 4;
+        gUnknown_03004140.unk_04 = 9;
+    }
+}