diff --git a/asm/link.s b/asm/link.s
index ff0bfb3c9..828e9f8b3 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -5,69 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800A2E0
-sub_800A2E0: @ 800A2E0
-	ldr r1, =gUnknown_03000D10
-	movs r0, 0
-	strb r0, [r1, 0x8]
-	strh r0, [r1]
-	strh r0, [r1, 0x2]
-	str r0, [r1, 0x4]
-	bx lr
-	.pool
-	thumb_func_end sub_800A2E0
-
-	thumb_func_start sub_800A2F4
-sub_800A2F4: @ 800A2F4
-	push {r4-r7,lr}
-	adds r7, r0, 0
-	adds r6, r1, 0
-	ldr r4, =gUnknown_03000D10
-	ldrb r5, [r4, 0x8]
-	cmp r5, 0
-	beq _0800A30C
-	movs r0, 0
-	b _0800A34A
-	.pool
-_0800A30C:
-	bl GetMultiplayerId
-	strb r0, [r4, 0x9]
-	movs r0, 0x1
-	strb r0, [r4, 0x8]
-	strh r6, [r4, 0x2]
-	strh r5, [r4]
-	adds r0, 0xFF
-	cmp r6, r0
-	bls _0800A324
-	str r7, [r4, 0x4]
-	b _0800A336
-_0800A324:
-	ldr r5, =gUnknown_020228C4
-	cmp r7, r5
-	beq _0800A334
-	adds r0, r5, 0
-	adds r1, r7, 0
-	adds r2, r6, 0
-	bl memcpy
-_0800A334:
-	str r5, [r4, 0x4]
-_0800A336:
-	ldr r0, =0x0000bbbb
-	bl sub_8009D90
-	ldr r1, =gUnknown_03003140
-	ldr r0, =sub_800A364
-	str r0, [r1]
-	ldr r1, =gUnknown_03000D50
-	movs r0, 0
-	str r0, [r1]
-	movs r0, 0x1
-_0800A34A:
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end sub_800A2F4
-
 	thumb_func_start sub_800A364
 sub_800A364: @ 800A364
 	push {lr}
diff --git a/src/link.c b/src/link.c
index 3cb485b49..9fd243052 100644
--- a/src/link.c
+++ b/src/link.c
@@ -22,7 +22,7 @@ struct BlockTransfer
 {
     u16 pos;
     u16 size;
-    void *src;
+    const void *src;
     bool8 active;
     u8 multiplayerId;
 };
@@ -111,9 +111,10 @@ void sub_8009638(void);
 void sub_80096BC(void);
 static void c2_08009A8C(void);
 static void sub_8009AA0(u8 unused);
-void sub_8009F70(void);
-void sub_800A2E0(void);
-void sub_800A2F4(void *heapptr, size_t src);
+static void sub_8009F70(void);
+static void sub_800A2E0(void);
+bool32 sub_800A2F4(const void *src, size_t size);
+void sub_800A364(void);
 void sub_800A418(void);
 void task00_link_test(u8 taskId);
 void sub_800A588(u8 who);
@@ -671,7 +672,7 @@ bool32 sub_8009F3C(void)
     return FALSE;
 }
 
-void sub_8009F70(void)
+static void sub_8009F70(void)
 {
     if (gReceivedRemoteLinkPlayers == TRUE)
     {
@@ -884,3 +885,39 @@ void sub_800A2BC(void)
         gLinkPlayers[i] = (struct LinkPlayer){};
     }
 }
+
+static void sub_800A2E0(void)
+{
+    gUnknown_03000D10.active = FALSE;
+    gUnknown_03000D10.pos = 0;
+    gUnknown_03000D10.size = 0;
+    gUnknown_03000D10.src = NULL;
+}
+
+bool32 sub_800A2F4(const void *src, size_t size)
+{
+    if (gUnknown_03000D10.active)
+    {
+        return FALSE;
+    }
+    gUnknown_03000D10.multiplayerId = GetMultiplayerId();
+    gUnknown_03000D10.active = TRUE;
+    gUnknown_03000D10.size = size;
+    gUnknown_03000D10.pos = 0;
+    if (size > 0x100)
+    {
+        gUnknown_03000D10.src = src;
+    }
+    else
+    {
+        if (src != gUnknown_020228C4)
+        {
+            memcpy(gUnknown_020228C4, src, size);
+        }
+        gUnknown_03000D10.src = gUnknown_020228C4;
+    }
+    sub_8009D90(0xbbbb);
+    gUnknown_03003140 = sub_800A364;
+    gUnknown_03000D50 = 0;
+    return TRUE;
+}