diff --git a/asm/link.s b/asm/link.s
index 2142d593e5..e51ee1380b 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -5,173 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800A0C8
-sub_800A0C8: @ 800A0C8
-	push {r4-r7,lr}
-	adds r5, r0, 0
-	adds r6, r1, 0
-	movs r7, 0
-	ldr r0, =gReceivedRemoteLinkPlayers
-	ldrb r4, [r0]
-	cmp r4, 0x1
-	beq _0800A0DA
-	b _0800A214
-_0800A0DA:
-	bl sub_800ABAC
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r5, r0
-	bgt _0800A0EA
-	cmp r0, r6
-	ble _0800A0FC
-_0800A0EA:
-	ldr r1, =gUnknown_03000D5C
-	movs r0, 0x6
-	str r0, [r1]
-	b _0800A22E
-	.pool
-_0800A0FC:
-	bl GetLinkPlayerCount
-	lsls r0, 24
-	cmp r0, 0
-	bne _0800A10E
-	ldr r0, =gUnknown_0300306C
-	strb r4, [r0]
-	bl sub_80097E8
-_0800A10E:
-	movs r6, 0
-	ldr r4, =gLinkPlayers
-	movs r5, 0
-	b _0800A134
-	.pool
-_0800A120:
-	adds r0, r4, 0
-	adds r0, 0x14
-	adds r0, r5, r0
-	ldr r1, [r0]
-	ldr r0, [r4, 0x14]
-	cmp r1, r0
-	bne _0800A130
-	adds r7, 0x1
-_0800A130:
-	adds r5, 0x1C
-	adds r6, 0x1
-_0800A134:
-	bl GetLinkPlayerCount
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r6, r0
-	blt _0800A120
-	bl GetLinkPlayerCount
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r7, r0
-	bne _0800A1AC
-	ldr r0, =gLinkPlayers
-	ldr r1, [r0, 0x14]
-	ldr r0, =0x00001133
-	cmp r1, r0
-	bne _0800A19C
-	bl sub_807A728
-	cmp r0, 0x1
-	beq _0800A184
-	cmp r0, 0x1
-	bgt _0800A178
-	cmp r0, 0
-	beq _0800A19C
-	ldr r3, =gUnknown_03000D5C
-	b _0800A22C
-	.pool
-_0800A178:
-	cmp r0, 0x2
-	beq _0800A190
-	ldr r3, =gUnknown_03000D5C
-	b _0800A22C
-	.pool
-_0800A184:
-	ldr r1, =gUnknown_03000D5C
-	movs r0, 0x4
-	b _0800A1A0
-	.pool
-_0800A190:
-	ldr r1, =gUnknown_03000D5C
-	movs r0, 0x5
-	b _0800A1A0
-	.pool
-_0800A19C:
-	ldr r1, =gUnknown_03000D5C
-	movs r0, 0x1
-_0800A1A0:
-	str r0, [r1]
-	adds r3, r1, 0
-	b _0800A22C
-	.pool
-_0800A1AC:
-	ldr r6, =gUnknown_03000D5C
-	movs r0, 0x3
-	str r0, [r6]
-	ldr r4, =gLinkPlayers
-	bl GetMultiplayerId
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 3
-	subs r1, r0
-	lsls r1, 2
-	adds r4, 0x14
-	adds r1, r4
-	ldr r5, [r1]
-	bl GetMultiplayerId
-	movs r1, 0x1
-	eors r0, r1
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 3
-	subs r1, r0
-	lsls r1, 2
-	adds r1, r4
-	ldr r1, [r1]
-	ldr r2, =0x00002266
-	cmp r5, r2
-	bne _0800A1EA
-	ldr r0, =0x00002277
-	cmp r1, r0
-	beq _0800A1F6
-_0800A1EA:
-	ldr r0, =0x00002277
-	adds r3, r6, 0
-	cmp r5, r0
-	bne _0800A22C
-	cmp r1, r2
-	bne _0800A22C
-_0800A1F6:
-	ldr r1, =gSpecialVar_0x8005
-	movs r0, 0x3
-	strh r0, [r1]
-	ldr r3, =gUnknown_03000D5C
-	b _0800A22C
-	.pool
-_0800A214:
-	ldr r0, =gUnknown_020229C8
-	ldrh r1, [r0]
-	adds r1, 0x1
-	strh r1, [r0]
-	lsls r1, 16
-	movs r0, 0x96
-	lsls r0, 18
-	ldr r3, =gUnknown_03000D5C
-	cmp r1, r0
-	bls _0800A22C
-	movs r0, 0x2
-	str r0, [r3]
-_0800A22C:
-	ldrb r0, [r3]
-_0800A22E:
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end sub_800A0C8
-
 	thumb_func_start sub_800A23C
 sub_800A23C: @ 800A23C
 	push {r4-r6,lr}
diff --git a/include/trade.h b/include/trade.h
new file mode 100644
index 0000000000..15438ff3fd
--- /dev/null
+++ b/include/trade.h
@@ -0,0 +1,12 @@
+#ifndef GUARD_TRADE_H
+#define GUARD_TRADE_H
+
+// Exported type declarations
+
+// Exported RAM declarations
+
+// Exported ROM declarations
+
+int sub_807A728(void);
+
+#endif //GUARD_TRADE_H
diff --git a/src/link.c b/src/link.c
index 66c7c58017..5d5d22cf56 100644
--- a/src/link.c
+++ b/src/link.c
@@ -13,6 +13,7 @@
 #include "gpu_regs.h"
 #include "palette.h"
 #include "task.h"
+#include "trade.h"
 #include "link.h"
 
 // Static type declarations
@@ -768,3 +769,76 @@ void sub_800A0AC(void)
     gUnknown_020229C8 = 0;
     sub_8009734();
 }
+
+u8 sub_800A0C8(int lower, int upper)
+{
+    int i;
+    int count;
+    u32 index;
+    u8 cmpVal;
+    u32 linkType1;
+    u32 linkType2;
+
+    count = 0;
+    if (gReceivedRemoteLinkPlayers == TRUE)
+    {
+        cmpVal = sub_800ABAC();
+        if (lower > cmpVal || cmpVal > upper)
+        {
+            gUnknown_03000D5C = 6;
+            return 6;
+        }
+        else
+        {
+            if (GetLinkPlayerCount() == 0)
+            {
+                gUnknown_0300306C = TRUE;
+                sub_80097E8();
+            }
+            for (i = 0, index = 0; i < GetLinkPlayerCount(); index ++, i ++)
+            {
+                if (gLinkPlayers[index].linkType == gLinkPlayers[0].linkType)
+                {
+                    count ++;
+                }
+            }
+            if (count == GetLinkPlayerCount())
+            {
+                if (gLinkPlayers[0].linkType == 0x1133)
+                {
+                    switch (sub_807A728())
+                    {
+                        case 1:
+                            gUnknown_03000D5C = 4;
+                            break;
+                        case 2:
+                            gUnknown_03000D5C = 5;
+                            break;
+                        case 0:
+                            gUnknown_03000D5C = 1;
+                            break;
+                    }
+                }
+                else
+                {
+                    gUnknown_03000D5C = 1;
+                }
+            }
+            else
+            {
+                gUnknown_03000D5C = 3;
+                linkType1 = gLinkPlayers[GetMultiplayerId()].linkType;
+                linkType2 = gLinkPlayers[GetMultiplayerId() ^ 1].linkType;
+                if ((linkType1 == 0x2266 && linkType2 == 0x2277) || (linkType1 == 0x2277 && linkType2 == 0x2266))
+                {
+                    gSpecialVar_0x8005 = 3;
+                }
+            }
+        }
+    }
+    else if (++ gUnknown_020229C8 > 600)
+    {
+        gUnknown_03000D5C = 2;
+    }
+    return gUnknown_03000D5C;
+}