sub_800AC34

asm/cable_club.s

@@ -426,7 +426,7 @@ sub_80B2688: @ 80B2688
 	adds r4, r0, r1
 	movs r0, 0
 	strh r0, [r4, 0xE]
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	lsrs r0, 24
 	cmp r0, 0x1
@@ -1645,7 +1645,7 @@ sub_80B3194: @ 80B3194
 	lsrs r0, 24
 	cmp r0, 0x1
 	bls _080B31DA
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	lsrs r0, 24
 	cmp r0, 0x1
@@ -2786,7 +2786,7 @@ _080B3B68:
 	lsls r0, 24
 	cmp r4, r0
 	bcc _080B3BB8
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	cmp r0, 0
 	beq _080B3B96

asm/link.s

@@ -5,100 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800ABBC
-sub_800ABBC: @ 800ABBC
-	push {lr}
-	ldr r0, =gSerialIsRFU
-	ldrb r0, [r0]
-	cmp r0, 0
-	bne _0800ABDC
-	ldr r0, =gLinkStatus
-	ldr r0, [r0]
-	lsrs r0, 5
-	movs r1, 0x1
-	ands r0, r1
-	b _0800ABE4
-	.pool
-_0800ABDC:
-	bl sub_8011AB0
-	lsls r0, 24
-	lsrs r0, 24
-_0800ABE4:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_800ABBC
-
-	thumb_func_start sub_800ABE8
-sub_800ABE8: @ 800ABE8
-	ldr r0, =gUnknown_03000D58
-	ldrb r0, [r0]
-	bx lr
-	.pool
-	thumb_func_end sub_800ABE8
-
-	thumb_func_start sub_800ABF4
-sub_800ABF4: @ 800ABF4
-	push {lr}
-	lsls r0, 16
-	lsrs r3, r0, 16
-	ldr r0, =gSerialIsRFU
-	ldrb r0, [r0]
-	cmp r0, 0x1
-	bne _0800AC0C
-	bl task_add_05_task_del_08FA224_when_no_RfuFunc
-	b _0800AC20
-	.pool
-_0800AC0C:
-	ldr r2, =gLinkCallback
-	ldr r1, [r2]
-	cmp r1, 0
-	bne _0800AC20
-	ldr r0, =sub_800AC80
-	str r0, [r2]
-	ldr r0, =gUnknown_030030E4
-	strb r1, [r0]
-	ldr r0, =gUnknown_030030F4
-	strh r3, [r0]
-_0800AC20:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_800ABF4
-
-	thumb_func_start sub_800AC34
-sub_800AC34: @ 800AC34
-	push {lr}
-	ldr r0, =gSerialIsRFU
-	ldrb r0, [r0]
-	cmp r0, 0x1
-	bne _0800AC48
-	bl task_add_05_task_del_08FA224_when_no_RfuFunc
-	b _0800AC70
-	.pool
-_0800AC48:
-	ldr r2, =gLinkCallback
-	ldr r1, [r2]
-	cmp r1, 0
-	beq _0800AC64
-	ldr r1, =gUnknown_02022B08
-	ldrh r0, [r1]
-	adds r0, 0x1
-	strh r0, [r1]
-	b _0800AC70
-	.pool
-_0800AC64:
-	ldr r0, =sub_800AC80
-	str r0, [r2]
-	ldr r0, =gUnknown_030030E4
-	strb r1, [r0]
-	ldr r0, =gUnknown_030030F4
-	strh r1, [r0]
-_0800AC70:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_800AC34
-
 	thumb_func_start sub_800AC80
 sub_800AC80: @ 800AC80
 	push {lr}

asm/link_rfu.s

@@ -7537,13 +7537,13 @@ sub_8011A9C: @ 8011A9C
 	.pool
 	thumb_func_end sub_8011A9C
 
-	thumb_func_start sub_8011AB0
+	thumb_func_start Rfu_IsMaster
-sub_8011AB0: @ 8011AB0
+Rfu_IsMaster: @ 8011AB0
 	ldr r0, =gUnknown_03005000
 	ldrb r0, [r0, 0xC]
 	bx lr
 	.pool
-	thumb_func_end sub_8011AB0
+	thumb_func_end Rfu_IsMaster
 
 	thumb_func_start LinkVSync
 LinkVSync: @ 8011ABC

asm/mystery_event_menu.s

@@ -566,7 +566,7 @@ _08178E58:
 	ands r0, r1
 	cmp r0, 0
 	beq _08178E98
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	cmp r0, 0
 	bne _08178E98

asm/pokenav.s

@@ -28128,7 +28128,7 @@ _081D4EBA:
 	thumb_func_start sub_81D4EC0
 sub_81D4EC0: @ 81D4EC0
 	push {lr}
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	cmp r0, 0
 	beq _081D4EDC
@@ -28186,7 +28186,7 @@ _081D4F20:
 	.4byte _081D4FEC
 	.4byte _081D4FF8
 _081D4F38:
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	cmp r0, 0
 	beq _081D4F88

asm/record_mixing.s

@@ -768,7 +768,7 @@ _080E73B8:
 	bl GetLinkPlayerCount_2
 	lsls r0, 24
 	lsrs r4, r0, 24
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	lsrs r0, 24
 	cmp r0, 0x1

asm/trade.s

@@ -473,7 +473,7 @@ _0807758C:
 	bcs _080775A0
 	b _08077B46
 _080775A0:
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	cmp r0, 0
 	beq _080775D8
@@ -7367,7 +7367,7 @@ _0807AFAC:
 	b _0807B0E4
 	.pool
 _0807AFBC:
-	bl sub_800ABBC
+	bl IsLinkMaster
 	lsls r0, 24
 	cmp r0, 0
 	bne _0807AFC8

include/link.h

@@ -205,7 +205,7 @@ void sub_800ADF8(void);
 void sub_800B488(void);
 void sub_800A620(void);
 void sub_8011BD0(void);
-u8 sub_800ABBC(void);
+u8 IsLinkMaster(void);
 void sub_800AC34(void);
 
 void SetLinkDebugValues(u32 seed, u32 flags);

include/link_rfu.h

@@ -21,5 +21,7 @@ u8 sub_80104F4(void);
 u8 rfu_get_multiplayer_id(void);
 bool8 sub_8010100(u8 a0);
 bool8 sub_8010500(void);
+bool8 Rfu_IsMaster(void);
+void task_add_05_task_del_08FA224_when_no_RfuFunc(void);
 
 #endif //GUARD_LINK_RFU_H

src/battle_controllers.c

@@ -793,7 +793,7 @@ static void Task_HandleSendLinkBuffersData(u8 taskId)
 
             if (GetLinkPlayerCount_2() >= var)
             {
-                if (sub_800ABBC())
+                if (IsLinkMaster())
                 {
                     sub_800A620();
                     gTasks[taskId].data[11]++;

src/link.c

@@ -107,6 +107,12 @@ EWRAM_DATA u16 gLinkTimeOutCounter = 0;
 EWRAM_DATA struct LinkPlayer gLocalLinkPlayer = {};
 EWRAM_DATA struct LinkPlayer gLinkPlayers[MAX_RFU_PLAYERS] = {};
 EWRAM_DATA struct LinkPlayer gSavedLinkPlayers[MAX_RFU_PLAYERS] = {};
+EWRAM_DATA struct {
+    u32 status;
+    u8 unk_04;
+} gUnknown_02022B00 = {};
+EWRAM_DATA u16 gUnknown_02022B08 = 0;
+EWRAM_DATA void *gUnknown_02022B0C = NULL;
 
 // Static ROM declarations
 
@@ -125,6 +131,7 @@ static u16 LinkTestCalcBlockChecksum(const u16 *src, u16 size);
 static void LinkTest_prnthex(u32 pos, u8 a0, u8 a1, u8 a2);
 static void LinkCB_RequestPlayerDataExchange(void);
 static void Task_PrintTestData(u8 taskId);
+void sub_800AC80(void);
 void sub_800AEB4(void);
 u8 sub_800B2F8(void);
 void sub_800B4A4(void);
@@ -1368,3 +1375,55 @@ u8 GetLinkPlayerCount_2(void)
 {
     return EXTRACT_PLAYER_COUNT(gLinkStatus);
 }
+
+bool8 IsLinkMaster(void)
+{
+    if (gSerialIsRFU)
+    {
+        return Rfu_IsMaster();
+    }
+    return EXTRACT_MASTER(gLinkStatus);
+}
+
+u8 sub_800ABE8(void)
+{
+    return gUnknown_03000D58;
+}
+
+void sub_800ABF4(u16 a0)
+{
+    if (gSerialIsRFU == TRUE)
+    {
+        task_add_05_task_del_08FA224_when_no_RfuFunc();
+    }
+    else
+    {
+        if (gLinkCallback == NULL)
+        {
+            gLinkCallback = sub_800AC80;
+            gUnknown_030030E4 = 0;
+            gUnknown_030030F4 = a0;
+        }
+    }
+}
+
+void sub_800AC34(void)
+{
+    if (gSerialIsRFU == TRUE)
+    {
+        task_add_05_task_del_08FA224_when_no_RfuFunc();
+    }
+    else
+    {
+        if (gLinkCallback != NULL)
+        {
+            gUnknown_02022B08 ++;
+        }
+        else
+        {
+            gLinkCallback = sub_800AC80;
+            gUnknown_030030E4 = 0;
+            gUnknown_030030F4 = 0;
+        }
+    }
+}

sym_ewram.txt

@@ -20,15 +20,6 @@ gStringVar4: @ 2021FC4
 	.include "src/string_util.o"
 	.include "src/link.o"
 
-gUnknown_02022B00: @ 2022B00
-	.space 0x8
-
-gUnknown_02022B08: @ 2022B08
-	.space 0x4
-
-gUnknown_02022B0C: @ 2022B0C
-	.space 0x4
-
 gUnknown_02022B10: @ 2022B10
 	.space 0x4