split out src/ directory into categorized subdirectories.

1 files changed, 0 insertions, 1820 deletions

diff --git a/src/link.c b/src/link.c
deleted file mode 100644
index 5858ad8bf..000000000
--- a/src/link.c
+++ /dev/null
@@ -1,1820 +0,0 @@
-#include "global.h"
-#include "link.h"
-#include "battle.h"
-#include "berry.h"
-#include "berry_blender.h"
-#include "hall_of_fame.h"
-#include "item_use.h"
-#include "main.h"
-#include "menu.h"
-#include "palette.h"
-#include "rng.h"
-#include "save.h"
-#include "songs.h"
-#include "sound.h"
-#include "sprite.h"
-#include "strings2.h"
-#include "task.h"
-#include "text.h"
-
-#define SIO_MULTI_CNT ((struct SioMultiCnt *)REG_ADDR_SIOCNT)
-
-struct BlockTransfer
-{
-    u16 pos;
-    u16 size;
-    void *src;
-    bool8 active;
-    u8 multiplayerId;
-};
-
-struct LinkTestBGInfo
-{
-    u32 screenBaseBlock;
-    u32 paletteNum;
-    u32 dummy_8;
-    u32 dummy_C;
-};
-
-extern u8 unk_2000000[];
-extern u8 unk_2004000[];
-extern u16 gBattleTypeFlags;
-
-extern u16 word_3004858;
-
-static void InitLinkTestBG(u8, u8, u8, u8);
-void InitLinkTestBG_Unused(u8, u8, u8, u8);
-void LinkTestScreen();
-static void InitLocalLinkPlayer(void);
-static void VBlankCB_LinkTest(void);
-static void InitLink(void);
-static void Task_TriggerHandshake(u8);
-static void TestBlockTransfer(u32, u32, u32);
-static void LinkTestProcessKeyInput(void);
-static void CB2_LinkTest(void);
-static void HandleReceiveRemoteLinkPlayer(u8);
-static void ProcessRecvCmds(u8);
-static void BuildSendCmd(u16);
-static void sub_8007B44(void);
-static void ResetBlockSend(void);
-static bool8 InitBlockSend(void *, u32);
-static void LinkCB_BlockSendBegin(void);
-static void LinkCB_BlockSend(void);
-static void LinkCB_BlockSendEnd(void);
-static void sub_8007E04(void);
-u32 sub_8007E40(void);
-static void SetBlockReceivedFlag(u8);
-static u16 LinkTestCalcBlockChecksum(void *, u16);
-static void PrintHexDigit(u8, u8, u8);
-static void PrintHex(u32, u8, u8, u8);
-static void LinkCB_RequestPlayerDataExchange(void);
-static void Task_PrintTestData(u8);
-bool8 sub_8008224(void);
-u8 GetDummy2(void);
-static void sub_8008350(void);
-static void sub_800837C(void);
-static void sub_80083E0(void);
-static void sub_8008454(void);
-static void sub_80084C8(void);
-static void sub_80084F4(void);
-
-static void CheckErrorStatus(void);
-static void CB2_PrintErrorMessage(void);
-static u8 IsSioMultiMaster(void);
-static void DisableSerial(void);
-static void EnableSerial(void);
-static void CheckMasterOrSlave(void);
-static void InitTimer(void);
-static void EnqueueSendCmd(u16 *);
-static void DequeueRecvCmds(u16[CMD_LENGTH][MAX_LINK_PLAYERS]);
-static void StartTransfer(void);
-static bool8 DoHandshake(void);
-static void DoRecv(void);
-static void DoSend(void);
-static void StopTimer(void);
-static void SendRecvDone(void);
-void ResetSendBuffer(void);
-void ResetRecvBuffer(void);
-
-static struct BlockTransfer sBlockSend;
-static struct BlockTransfer sBlockRecv[MAX_LINK_PLAYERS];
-static u32 sBlockSendDelayCounter;
-static u32 sDummy1;
-static u8 sDummy2;
-static u32 sPlayerDataExchangeStatus;
-static u32 sErrorLinkStatus;
-static u32 sErrorLastRecvQueueCount;
-static u32 sErrorLastSendQueueCount;
-static u32 sDummy3;
-static u8 sLinkTestLastBlockSendPos;
-static u8 sLinkTestLastBlockRecvPos[MAX_LINK_PLAYERS];
-static u8 sNumVBlanksWithoutSerialIntr;
-static bool8 sSendBufferEmpty;
-static u16 sSendNonzeroCheck;
-static u16 sRecvNonzeroCheck;
-static u8 sChecksumAvailable;
-static u8 sHandshakePlayerCount;
-
-u16 word_3002910[MAX_LINK_PLAYERS];
-u32 gLinkDebugValue1;
-struct LinkPlayerBlock localLinkPlayerBlock;
-bool8 gLinkErrorOccurred;
-u32 gLinkDebugValue2;
-bool8 gLinkPlayerPending[MAX_LINK_PLAYERS];
-struct LinkPlayer gLinkPlayers[MAX_LINK_PLAYERS];
-bool8 gBlockReceived[MAX_LINK_PLAYERS];
-u16 gLinkHeldKeys;
-u16 gLinkTimeOutCounter;
-struct LinkPlayer localLinkPlayer;
-u16 gRecvCmds[CMD_LENGTH][MAX_LINK_PLAYERS];
-u32 gLinkStatus;
-bool8 gLinkDummyBool;
-u8 byte_3002A68;
-u8 gBlockSendBuffer[BLOCK_BUFFER_SIZE];
-bool8 u8_array_3002B70[MAX_LINK_PLAYERS];
-u16 gLinkType;
-bool8 u8_array_3002B78[MAX_LINK_PLAYERS];
-u16 gBlockRecvBuffer[MAX_LINK_PLAYERS][BLOCK_BUFFER_SIZE / 2];
-bool8 gSuppressLinkErrorMessage;
-u8 gSavedLinkPlayerCount;
-u16 gSendCmd[CMD_LENGTH];
-u8 gSavedMultiplayerId;
-bool8 gReceivedRemoteLinkPlayers;
-struct LinkTestBGInfo gLinkTestBGInfo;
-void (*gLinkCallback)(void);
-struct LinkPlayer gSavedLinkPlayers[MAX_LINK_PLAYERS];
-u8 gShouldAdvanceLinkState;
-u16 gLinkTestBlockChecksums[MAX_LINK_PLAYERS];
-u8 gBlockRequestType;
-u8 gLastSendQueueCount;
-struct Link gLink;
-u8 gLastRecvQueueCount;
-u16 gLinkSavedIme;
-
-#ifdef GERMAN
-u8 deUnkValue1;
-u8 deUnkValue2;
-#endif
-
-EWRAM_DATA bool8 gLinkTestDebugValuesEnabled = {0};
-EWRAM_DATA bool8 gLinkTestDummyBool = {0};
-EWRAM_DATA u32 gFiller_20238B8 = {0};
-EWRAM_DATA u32 dword_20238BC = {0};
-EWRAM_DATA bool8 gLinkOpen = {0};
-
-static const u16 sLinkTestDigitPalette[] = INCBIN_U16("graphics/interface/link_test_digits.gbapal");
-static const u32 sLinkTestDigitTiles[] = INCBIN_U32("graphics/interface/link_test_digits.4bpp");
-
-static const u8 sDebugMessages[7][12] =
-{
-    _("せつぞく　ちゅうです"),
-    _("せつぞく　できません"),
-    _("かくにん　ちゅうです"),
-    _("かくにん　できました"),
-    _("かくにん　できません"),
-    _("かくにん　を　かくにん"),
-    _("かくにん　は　しっぱい"),
-};
-
-static const u8 sColorCodes[] = _("{HIGHLIGHT TRANSPARENT}{COLOR WHITE2}");
-
-const struct BlockRequest sBlockRequestLookupTable[5] =
-{
-    {gBlockSendBuffer, 200},
-    {gBlockSendBuffer, 200},
-    {gBlockSendBuffer, 100},
-    {gBlockSendBuffer, 220},
-    {gBlockSendBuffer, 40},
-};
-
-static const u8 sTestString[] = _("テストな");
-
-ALIGNED(4) static const u8 sMagic[] = "GameFreak inc.";
-
-ALIGNED(4) static const u8 sEmptyString[] = _("");
-
-void Task_DestroySelf(u8 taskId)
-{
-    DestroyTask(taskId);
-}
-
-static void InitLinkTestBG(u8 paletteNum, u8 bgNum, u8 screenBaseBlock, u8 charBaseBlock)
-{
-    LoadPalette(sLinkTestDigitPalette, 16 * paletteNum, 32);
-    DmaCopy16(3, sLinkTestDigitTiles, BG_CHAR_ADDR(charBaseBlock), 0x220);
-
-    gLinkTestBGInfo.screenBaseBlock = screenBaseBlock;
-    gLinkTestBGInfo.paletteNum = paletteNum;
-
-    switch (bgNum)
-    {
-    case 1:
-        REG_BG1CNT = BGCNT_PRIORITY(1) | BGCNT_SCREENBASE(screenBaseBlock) | BGCNT_CHARBASE(charBaseBlock);
-        break;
-    case 2:
-        REG_BG2CNT = BGCNT_PRIORITY(1) | BGCNT_SCREENBASE(screenBaseBlock) | BGCNT_CHARBASE(charBaseBlock);
-        break;
-    case 3:
-        REG_BG3CNT = BGCNT_PRIORITY(1) | BGCNT_SCREENBASE(screenBaseBlock) | BGCNT_CHARBASE(charBaseBlock);
-        break;
-    }
-}
-
-void InitLinkTestBG_Unused(u8 paletteNum, u8 bgNum, u8 screenBaseBlock, u8 charBaseBlock)
-{
-    LoadPalette(sLinkTestDigitPalette, 16 * paletteNum, 32);
-    DmaCopy16(3, sLinkTestDigitTiles, BG_CHAR_ADDR(charBaseBlock), 0x220);
-
-    gLinkTestBGInfo.screenBaseBlock = screenBaseBlock;
-    gLinkTestBGInfo.paletteNum = paletteNum;
-
-    *gBGControlRegs[bgNum] = (screenBaseBlock << 8) | (charBaseBlock << 2);
-}
-
-void LinkTestScreen(void)
-{
-    s32 i;
-    ResetSpriteData();
-    FreeAllSpritePalettes();
-    ResetTasks();
-    SetVBlankCallback(VBlankCB_LinkTest);
-    SetUpWindowConfig(&gWindowConfig_81E6CE4);
-    InitMenuWindow((struct WindowConfig *)&gWindowConfig_81E6CE4);
-    ResetBlockSend();
-    gLinkType = 0x1111;
-    OpenLink();
-    SeedRng(gMain.vblankCounter1);
-
-    for (i = 0; i < 4; i++)
-    {
-        // Very weird code, but nothing else seems to match.
-        // The following would have the same effect:
-        // gSaveBlock2.playerTrainerId[i] = Random();
-        u8 *trainerId = gSaveBlock2.playerTrainerId;
-        s32 r;
-        s32 mask = 0xFF;
-        trainerId[i] = (r = Random()) & mask;
-    }
-
-    InitLinkTestBG(0, 2, 4, 0);
-    REG_DISPCNT = DISPCNT_MODE_0 | DISPCNT_OBJ_ON | DISPCNT_BG0_ON | DISPCNT_BG2_ON | DISPCNT_OBJ_1D_MAP;
-    CreateTask(Task_DestroySelf, 0);
-    RunTasks();
-    AnimateSprites();
-    BuildOamBuffer();
-    UpdatePaletteFade();
-    sDummy3 = 0;
-    InitLocalLinkPlayer();
-    CreateTask(Task_PrintTestData, 0);
-    SetMainCallback2(CB2_LinkTest);
-}
-
-void sub_8007270(u8 a1)
-{
-    localLinkPlayer.lp_field_18 = a1;
-}
-
-static void InitLocalLinkPlayer(void)
-{
-    s32 i;
-
-    localLinkPlayer.trainerId = gSaveBlock2.playerTrainerId[0]
-                              | (gSaveBlock2.playerTrainerId[1] << 8)
-                              | (gSaveBlock2.playerTrainerId[2] << 16)
-                              | (gSaveBlock2.playerTrainerId[3] << 24);
-
-    for (i = 0; i < (s32)sizeof(localLinkPlayer.name); i++)
-        localLinkPlayer.name[i] = gSaveBlock2.playerName[i]; // UB: reads past the end of "playerName" array
-
-    localLinkPlayer.gender = gSaveBlock2.playerGender;
-    localLinkPlayer.linkType = gLinkType;
-    localLinkPlayer.language = gGameLanguage;
-    localLinkPlayer.version = gGameVersion + 0x4000;
-    localLinkPlayer.lp_field_2 = 0;
-}
-
-static void VBlankCB_LinkTest(void)
-{
-    LoadOam();
-    ProcessSpriteCopyRequests();
-    TransferPlttBuffer();
-}
-
-static void InitLink(void)
-{
-    s32 i;
-
-    for (i = 0; i < CMD_LENGTH; i++)
-        gSendCmd[i] = 0xEFFF;
-
-    gLinkOpen = TRUE;
-    EnableSerial();
-}
-
-static void Task_TriggerHandshake(u8 taskId)
-{
-    gTasks[taskId].data[0]++;
-
-    if (gTasks[taskId].data[0] == 5)
-    {
-        gShouldAdvanceLinkState = 1;
-        DestroyTask(taskId);
-    }
-}
-
-void OpenLink(void)
-{
-    s32 i;
-
-    ResetSerial();
-    InitLink();
-
-    gLinkCallback = LinkCB_RequestPlayerDataExchange;
-    gLinkVSyncDisabled = FALSE;
-    gLinkErrorOccurred = FALSE;
-    gSuppressLinkErrorMessage = FALSE;
-
-    ResetBlockReceivedFlags();
-
-    sDummy1 = 0;
-    byte_3002A68 = 0;
-    gLinkDummyBool = FALSE;
-    gReceivedRemoteLinkPlayers = FALSE;
-
-    for (i = 0; i < 4; i++)
-    {
-        gLinkPlayerPending[i] = TRUE;
-        u8_array_3002B78[i] = 0;
-        u8_array_3002B70[i] = 0;
-    }
-
-    CreateTask(Task_TriggerHandshake, 2);
-}
-
-void CloseLink(void)
-{
-    gReceivedRemoteLinkPlayers = FALSE;
-    gLinkOpen = FALSE;
-    DisableSerial();
-}
-
-static void TestBlockTransfer(u32 a1, u32 a2, u32 a3)
-{
-    u8 i;
-    u8 val;
-
-    if (sLinkTestLastBlockSendPos != sBlockSend.pos)
-    {
-        PrintHex(sBlockSend.pos, 2, 3, 2);
-        sLinkTestLastBlockSendPos = sBlockSend.pos;
-    }
-
-    for (i = 0; i < MAX_LINK_PLAYERS; i++)
-    {
-        if (sLinkTestLastBlockRecvPos[i] != sBlockRecv[i].pos)
-        {
-            PrintHex(sBlockRecv[i].pos, 2, i + 4, 2);
-            sLinkTestLastBlockRecvPos[i] = sBlockRecv[i].pos;
-        }
-    }
-
-    val = GetBlockReceivedStatus();
-
-    if (val == 0xF)
-    {
-        for (i = 0; i < MAX_LINK_PLAYERS; i++)
-        {
-            if ((val >> i) & 1)
-            {
-                gLinkTestBlockChecksums[i] = LinkTestCalcBlockChecksum(&gBlockRecvBuffer[i], sBlockRecv[i].size);
-                ResetBlockReceivedFlag(i);
-                if (gLinkTestBlockChecksums[i] != 834)
-                {
-                    gLinkTestDebugValuesEnabled = FALSE;
-                    gLinkTestDummyBool = FALSE;
-                }
-            }
-        }
-    }
-}
-
-static void LinkTestProcessKeyInput(void)
-{
-    if (gMain.newKeys & A_BUTTON)
-        gShouldAdvanceLinkState = 1;
-    if (gMain.heldKeys & B_BUTTON)
-        InitBlockSend(unk_2004000, 0x2004);
-    if (gMain.newKeys & L_BUTTON)
-        BeginNormalPaletteFade(-1, 0, 0x10, 0, 2);
-    if (gMain.newKeys & START_BUTTON)
-        SetSuppressLinkErrorMessage(TRUE);
-    if (gMain.newKeys & R_BUTTON)
-        TrySavingData(LINK_SAVE);
-    if (gMain.newKeys & SELECT_BUTTON)
-        sub_800832C();
-    if (gLinkTestDebugValuesEnabled)
-    {
-        u32 vblankCounter1 = gMain.vblankCounter1;
-        u8 val = gLinkVSyncDisabled;
-        if (!gLinkCallback)
-            val = gLinkVSyncDisabled | 0x10;
-        SetLinkDebugValues(vblankCounter1, val);
-    }
-}
-
-static void CB2_LinkTest(void)
-{
-    LinkTestProcessKeyInput();
-    TestBlockTransfer(1, 1, 0);
-    RunTasks();
-    AnimateSprites();
-    BuildOamBuffer();
-    UpdatePaletteFade();
-}
-
-u16 LinkMain2(u16 *heldKeys)
-{
-    u8 i;
-
-    if (!gLinkOpen)
-        return 0;
-
-    for (i = 0; i < CMD_LENGTH; i++)
-        gSendCmd[i] = 0;
-
-    gLinkHeldKeys = *heldKeys;
-
-    if (gLinkStatus & LINK_STAT_CONN_ESTABLISHED)
-    {
-        ProcessRecvCmds(SIO_MULTI_CNT->id);
-        if (gLinkCallback)
-            gLinkCallback();
-        CheckErrorStatus();
-    }
-
-    return gLinkStatus;
-}
-
-static void HandleReceiveRemoteLinkPlayer(u8 multiplayerId)
-{
-    u32 pendingLinkPlayerCount = 0;
-    s32 i;
-
-    gLinkPlayerPending[multiplayerId] = FALSE;
-
-    for (i = 0; i < GetLinkPlayerCount_2(); i++)
-        pendingLinkPlayerCount += gLinkPlayerPending[i];
-
-    if (pendingLinkPlayerCount == 0 && !gReceivedRemoteLinkPlayers)
-        gReceivedRemoteLinkPlayers = TRUE;
-}
-
-static void ProcessRecvCmds(u8 unusedParam)
-{
-    u16 i;
-    for (i = 0; i < MAX_LINK_PLAYERS; i++)
-    {
-        word_3002910[i] = 0;
-        if (!gRecvCmds[0][i])
-            continue;
-        switch (gRecvCmds[0][i])
-        {
-        case 0x2222:
-            InitLocalLinkPlayer();
-            localLinkPlayerBlock.linkPlayer = localLinkPlayer;
-            memcpy(localLinkPlayerBlock.magic1, sMagic, sizeof(localLinkPlayerBlock.magic1) - 1);
-            memcpy(localLinkPlayerBlock.magic2, sMagic, sizeof(localLinkPlayerBlock.magic2) - 1);
-            InitBlockSend(&localLinkPlayerBlock, sizeof(localLinkPlayerBlock));
-            break;
-        case 0x4444:
-            word_3002910[i] = gRecvCmds[1][i];
-            break;
-        case 0x5555:
-            byte_3002A68 = 1;
-            break;
-        case 0x5566:
-            byte_3002A68 = 1;
-            break;
-        case 0xBBBB:
-        {
-            struct BlockTransfer *blockRecv = &sBlockRecv[i];
-            blockRecv->pos = 0;
-            blockRecv->size = gRecvCmds[1][i];
-            blockRecv->multiplayerId = gRecvCmds[2][i];
-            break;
-        }
-        case 0x8888:
-            if (sBlockRecv[i].size > BLOCK_BUFFER_SIZE)
-            {
-                u16 *buffer = (u16 *)unk_2000000;
-                u16 j;
-                for (j = 0; j < CMD_LENGTH - 1; j++)
-                    buffer[(sBlockRecv[i].pos / 2) + j] = gRecvCmds[j + 1][i];
-            }
-            else
-            {
-                u16 j;
-                for (j = 0; j < CMD_LENGTH - 1; j++)
-                    gBlockRecvBuffer[i][(sBlockRecv[i].pos / 2) + j] = gRecvCmds[j + 1][i];
-            }
-
-            sBlockRecv[i].pos += (CMD_LENGTH - 1) * 2;
-
-            if (sBlockRecv[i].pos >= sBlockRecv[i].size)
-            {
-                if (gLinkPlayerPending[i] == TRUE)
-                {
-                    struct LinkPlayerBlock *block = (struct LinkPlayerBlock *)&gBlockRecvBuffer[i];
-                    struct LinkPlayer *linkPlayer = &gLinkPlayers[i];
-                    *linkPlayer = block->linkPlayer;
-
-                    if (strcmp(block->magic1, sMagic)
-                     || strcmp(block->magic2, sMagic))
-                    {
-                        SetMainCallback2(CB2_LinkError);
-                    }
-                    else
-                    {
-                        HandleReceiveRemoteLinkPlayer(i);
-                    }
-
-                    ConvertInternationalString(gLinkPlayers[i].name, gLinkPlayers[i].language);
-                }
-                else
-                {
-                    SetBlockReceivedFlag(i);
-                }
-            }
-            break;
-        case 0x5FFF:
-            u8_array_3002B78[i] = 1;
-            break;
-        case 0x2FFE:
-            u8_array_3002B70[i] = 1;
-            break;
-        case 0xAAAA:
-            sub_8007E24();
-            break;
-        case 0xAAAB:
-            sub_80516C4(i, gRecvCmds[1][i]);
-            break;
-        case 0xCCCC:
-#if defined(ENGLISH)
-            SendBlock(0, sBlockRequestLookupTable[gRecvCmds[1][i]].address, sBlockRequestLookupTable[gRecvCmds[1][i]].size);
-#elif defined(GERMAN)
-            if (deUnkValue2 == 1)
-            {
-                deUnkValue2 = 2;
-                deUnkValue1 = gRecvCmds[1][i];
-            }
-            else if (deUnkValue2 == 2 || deUnkValue2 == 3)
-            {
-                SendBlock(0, sBlockRequestLookupTable[gRecvCmds[1][i]].address, sBlockRequestLookupTable[gRecvCmds[1][i]].size);
-
-                if (deUnkValue2 == 2)
-                    deUnkValue2 = 1;
-                else
-                    deUnkValue2 = 0;
-            }
-            else
-            {
-                SendBlock(0, sBlockRequestLookupTable[gRecvCmds[1][i]].address, sBlockRequestLookupTable[gRecvCmds[1][i]].size);
-            }
-#endif
-            break;
-        case 0xCAFE:
-            word_3002910[i] = gRecvCmds[1][i];
-            break;
-        }
-    }
-}
-
-static void BuildSendCmd(u16 code)
-{
-    switch (code)
-    {
-    case 0x2222:
-        gSendCmd[0] = 0x2222;
-        gSendCmd[1] = gLinkType;
-        break;
-    case 0x2FFE:
-        gSendCmd[0] = 0x2FFE;
-        break;
-    case 0x4444:
-        gSendCmd[0] = 0x4444;
-        gSendCmd[1] = gMain.heldKeys;
-        break;
-    case 0x5555:
-        gSendCmd[0] = 0x5555;
-        break;
-    case 0x5566:
-        gSendCmd[0] = 0x5566;
-        break;
-    case 0x6666:
-        gSendCmd[0] = 0x6666;
-        gSendCmd[1] = 0;
-        break;
-    case 0x7777:
-    {
-        u8 i;
-
-        gSendCmd[0] = 0x7777;
-
-        for (i = 0; i < 5; i++)
-            gSendCmd[i + 1] = 0xEE;
-
-        break;
-    }
-    case 0xBBBB:
-        gSendCmd[0] = 0xBBBB;
-        gSendCmd[1] = sBlockSend.size;
-        gSendCmd[2] = sBlockSend.multiplayerId + 128;
-        break;
-    case 0xAAAA:
-        gSendCmd[0] = 0xAAAA;
-        break;
-    case 0xAAAB:
-        gSendCmd[0] = 0xAAAB;
-        gSendCmd[1] = gScriptItemId;
-        break;
-    case 0xCCCC:
-        gSendCmd[0] = 0xCCCC;
-        gSendCmd[1] = gBlockRequestType;
-        break;
-    case 0x5FFF:
-        gSendCmd[0] = 0x5FFF;
-        break;
-    case 0xCAFE:
-        if (!word_3004858 || gLinkTransferringData)
-            break;
-        gSendCmd[0] = 0xCAFE;
-        gSendCmd[1] = word_3004858;
-        break;
-    }
-}
-
-void sub_8007B14(void)
-{
-    gLinkCallback = sub_8007B44;
-}
-
-bool32 sub_8007B24(void)
-{
-    if (gLinkCallback == sub_8007B44)
-        return TRUE;
-    else
-        return FALSE;
-}
-
-static void sub_8007B44(void)
-{
-    if (gReceivedRemoteLinkPlayers == TRUE)
-        BuildSendCmd(0xCAFE);
-}
-
-void ClearLinkCallback(void)
-{
-    gLinkCallback = NULL;
-}
-
-void ClearLinkCallback_2(void)
-{
-    gLinkCallback = NULL;
-}
-
-u8 GetLinkPlayerCount(void)
-{
-    return EXTRACT_PLAYER_COUNT(gLinkStatus);
-}
-
-void OpenLinkTimed(void)
-{
-    sPlayerDataExchangeStatus = EXCHANGE_NOT_STARTED;
-    gLinkTimeOutCounter = 0;
-#if defined(GERMAN)
-    ResetBlockSend();
-#endif
-    OpenLink();
-}
-
-u8 GetLinkPlayerDataExchangeStatusTimed(void)
-{
-    s32 i;
-    s32 count = 0;
-    u32 index;
-
-    if (gReceivedRemoteLinkPlayers == TRUE)
-    {
-        if (GetLinkPlayerCount() == 0)
-        {
-            gLinkErrorOccurred = TRUE;
-            CloseLink();
-        }
-
-        i = 0;
-        index = 0;
-
-        while (i < GetLinkPlayerCount())
-        {
-            if (gLinkPlayers[index].linkType == gLinkPlayers[0].linkType)
-                ++count;
-            ++index;
-            ++i;
-        }
-
-        if (count == GetLinkPlayerCount())
-            sPlayerDataExchangeStatus = EXCHANGE_COMPLETE;
-        else
-            sPlayerDataExchangeStatus = EXCHANGE_IN_PROGRESS;
-    }
-    else
-    {
-        gLinkTimeOutCounter++;
-        if (gLinkTimeOutCounter > 600)
-            sPlayerDataExchangeStatus = EXCHANGE_TIMED_OUT;
-    }
-
-    return sPlayerDataExchangeStatus;
-}
-
-bool8 IsLinkPlayerDataExchangeComplete(void)
-{
-    u8 i;
-    u8 count = 0;
-    u8 isComplete;
-
-    for (i = 0; i < GetLinkPlayerCount(); i++)
-        if (gLinkPlayers[i].linkType == gLinkPlayers[0].linkType)
-            count++;
-
-    if (count == GetLinkPlayerCount())
-    {
-        isComplete = TRUE;
-        sPlayerDataExchangeStatus = EXCHANGE_COMPLETE;
-    }
-    else
-    {
-        isComplete = FALSE;
-        sPlayerDataExchangeStatus = EXCHANGE_IN_PROGRESS;
-    }
-
-    return isComplete;
-}
-
-u32 GetLinkPlayerTrainerId(u8 multiplayerId)
-{
-    return gLinkPlayers[multiplayerId].trainerId;
-}
-
-void ResetLinkPlayers(void)
-{
-    s32 i;
-    for (i = 0; i < 4; i++)
-        memset(&gLinkPlayers[i], 0, sizeof(struct LinkPlayer));
-}
-
-static void ResetBlockSend(void)
-{
-    sBlockSend.active = FALSE;
-    sBlockSend.pos = 0;
-    sBlockSend.size = 0;
-    sBlockSend.src = NULL;
-}
-
-static bool8 InitBlockSend(void *data, u32 size)
-{
-    if (sBlockSend.active)
-    {
-        return FALSE;
-    }
-    else
-    {
-        sBlockSend.multiplayerId = GetMultiplayerId();
-        sBlockSend.active = TRUE;
-        sBlockSend.size = size;
-        sBlockSend.pos = 0;
-
-        if (size > BLOCK_BUFFER_SIZE)
-        {
-            sBlockSend.src = data;
-        }
-        else
-        {
-            if (data != gBlockSendBuffer)
-                memcpy(gBlockSendBuffer, data, size);
-            sBlockSend.src = gBlockSendBuffer;
-        }
-
-        BuildSendCmd(0xBBBB);
-        gLinkCallback = LinkCB_BlockSendBegin;
-        sBlockSendDelayCounter = 0;
-        return TRUE;
-    }
-}
-
-static void LinkCB_BlockSendBegin(void)
-{
-    sBlockSendDelayCounter++;
-    if (sBlockSendDelayCounter > 2)
-        gLinkCallback = LinkCB_BlockSend;
-}
-
-static void LinkCB_BlockSend(void)
-{
-    s32 i;
-    u8 *buffer = sBlockSend.src;
-
-    gSendCmd[0] = 0x8888;
-
-    for (i = 0; i < CMD_LENGTH - 1; i++)
-    {
-        s32 offset = sBlockSend.pos + 2 * i;
-        gSendCmd[i + 1] = (buffer[offset + 1] << 8) | buffer[offset];
-    }
-
-    sBlockSend.pos += (CMD_LENGTH - 1) * 2;
-
-    if (sBlockSend.size <= sBlockSend.pos)
-    {
-        sBlockSend.active = FALSE;
-        gLinkCallback = LinkCB_BlockSendEnd;
-    }
-}
-
-static void LinkCB_BlockSendEnd(void)
-{
-    gLinkCallback = NULL;
-}
-
-static void sub_8007E04(void)
-{
-    GetMultiplayerId(); // whats the point of calling this if you dont use the multiplayer ID?
-    BuildSendCmd(0x4444);
-    dword_20238BC++;
-}
-
-void sub_8007E24(void)
-{
-    dword_20238BC = 0;
-    gLinkCallback = sub_8007E04;
-}
-
-u32 sub_8007E40(void)
-{
-    return dword_20238BC;
-}
-
-void sub_8007E4C(void)
-{
-    BuildSendCmd(0xAAAA);
-}
-
-u8 GetMultiplayerId(void)
-{
-    return SIO_MULTI_CNT->id;
-}
-
-u8 bitmask_all_link_players_but_self(void)
-{
-    return ((1 << GetMultiplayerId()) ^ 0xF);
-}
-
-bool8 SendBlock(u8 a1, void *a2, u16 a3)
-{
-    return InitBlockSend(a2, a3);
-}
-
-bool8 sub_8007E9C(u8 a1)
-{
-    if (!gLinkCallback)
-    {
-        gBlockRequestType = a1;
-        BuildSendCmd(0xCCCC);
-        return TRUE;
-    }
-    else
-    {
-        return FALSE;
-    }
-}
-
-bool8 sub_8007ECC(void)
-{
-    u8 retVal = FALSE;
-
-    if (!gLinkCallback)
-        retVal = TRUE;
-
-    return retVal;
-}
-
-u8 GetBlockReceivedStatus(void)
-{
-    return (gBlockReceived[3] << 3)
-         | (gBlockReceived[2] << 2)
-         | (gBlockReceived[1] << 1)
-         | gBlockReceived[0];
-}
-
-static void SetBlockReceivedFlag(u8 multiplayerId)
-{
-    gBlockReceived[multiplayerId] = TRUE;
-}
-
-void ResetBlockReceivedFlags(void)
-{
-    s32 i;
-    for (i = 0; i < 4; i++)
-        gBlockReceived[i] = FALSE;
-}
-
-void ResetBlockReceivedFlag(u8 multiplayerId)
-{
-    if (gBlockReceived[multiplayerId])
-        gBlockReceived[multiplayerId] = FALSE;
-}
-
-void sub_8007F4C(void)
-{
-    if ((gLinkStatus & LINK_STAT_MASTER) && EXTRACT_PLAYER_COUNT(gLinkStatus) > 1)
-        gShouldAdvanceLinkState = 1;
-}
-
-static u16 LinkTestCalcBlockChecksum(void *data, u16 size)
-{
-    u16 sum = 0;
-    u16 i;
-
-    for (i = 0; i < size / 2; i++)
-        sum += ((u16 *)data)[i];
-
-    return sum;
-}
-
-static void PrintHexDigit(u8 tileNum, u8 x, u8 y)
-{
-    u16 *tilemap = (u16 *)BG_SCREEN_ADDR(gLinkTestBGInfo.screenBaseBlock);
-    tilemap[(32 * y) + x] = (gLinkTestBGInfo.paletteNum << 12) | (tileNum + 1);
-}
-
-static void PrintHex(u32 num, u8 x, u8 y, u8 maxDigits)
-{
-    u8 buffer[16];
-    s32 i;
-
-    for (i = 0; i < maxDigits; i++)
-    {
-        buffer[i] = num & 0xF;
-        num >>= 4;
-    }
-
-    for (i = maxDigits - 1; i >= 0; i--)
-    {
-        PrintHexDigit(buffer[i], x, y);
-        x++;
-    }
-}
-
-static void LinkCB_RequestPlayerDataExchange(void)
-{
-    // Only one request needs to be sent, so only the master sends it.
-    if (gLinkStatus & LINK_STAT_MASTER)
-        BuildSendCmd(0x2222);
-    gLinkCallback = NULL;
-}
-
-void Task_PrintTestData(u8 taskId)
-{
-    s32 i;
-
-    PrintHex(gShouldAdvanceLinkState, 2, 1, 2);
-    PrintHex(gLinkStatus, 15, 1, 8);
-    PrintHex(gLink.state, 2, 10, 2);
-    PrintHex(EXTRACT_PLAYER_COUNT(gLinkStatus), 15, 10, 2);
-    PrintHex(GetMultiplayerId(), 15, 12, 2);
-    PrintHex(gLastSendQueueCount, 25, 1, 2);
-    PrintHex(gLastRecvQueueCount, 25, 2, 2);
-    PrintHex(GetBlockReceivedStatus(), 15, 5, 2);
-    PrintHex(gLinkDebugValue1, 2, 12, 8);
-    PrintHex(gLinkDebugValue2, 2, 13, 8);
-    PrintHex(GetSioMultiSI(), 25, 5, 1);
-    PrintHex(IsSioMultiMaster(), 25, 6, 1);
-    PrintHex(IsLinkConnectionEstablished(), 25, 7, 1);
-    PrintHex(HasLinkErrorOccurred(), 25, 8, 1);
-
-    for (i = 0; i < MAX_LINK_PLAYERS; i++)
-        PrintHex(gLinkTestBlockChecksums[i], 10, 4 + i, 4);
-}
-
-void SetLinkDebugValues(u32 value1, u32 value2)
-{
-    gLinkDebugValue1 = value1;
-    gLinkDebugValue2 = value2;
-}
-
-u8 sub_8008198(void)
-{
-    u8 result = 0;
-    s32 i;
-
-    for (i = 0; i < gSavedLinkPlayerCount; i++)
-        result |= (1 << i);
-
-    return result;
-}
-
-void sub_80081C8(u8 playerCount)
-{
-    s32 i;
-
-    gSavedLinkPlayerCount = playerCount;
-    gSavedMultiplayerId = GetMultiplayerId();
-
-    for (i = 0; i < 4; i++)
-        gSavedLinkPlayers[i] = gLinkPlayers[i];
-}
-
-u8 sub_800820C(void)
-{
-    return gSavedLinkPlayerCount;
-}
-
-u8 sub_8008218(void)
-{
-    return gSavedMultiplayerId;
-}
-
-bool8 sub_8008224(void)
-{
-    s32 count = 0;
-    s32 i;
-
-    for (i = 0; i < gSavedLinkPlayerCount; i++)
-        if (gLinkPlayers[i].trainerId == gSavedLinkPlayers[i].trainerId)
-            count++;
-
-    if (count == gSavedLinkPlayerCount)
-        return TRUE;
-    else
-        return FALSE;
-}
-
-void sub_800826C(void)
-{
-    u8 i;
-
-    for (i = 0; i < gSavedLinkPlayerCount; i++)
-    {
-        if (gSavedLinkPlayers[i].trainerId != gLinkPlayers[i].trainerId
-         || StringCompareWithoutExtCtrlCodes(gSavedLinkPlayers[i].name, gLinkPlayers[i].name))
-        {
-            gLinkErrorOccurred = TRUE;
-            CloseLink();
-            SetMainCallback2(CB2_LinkError);
-        }
-    }
-}
-
-void sub_80082EC(void)
-{
-    gSavedLinkPlayerCount = 0;
-    gSavedMultiplayerId = 0;
-}
-
-u8 GetLinkPlayerCount_2(void)
-{
-    return EXTRACT_PLAYER_COUNT(gLinkStatus);
-}
-
-bool8 IsLinkMaster(void)
-{
-    return EXTRACT_MASTER(gLinkStatus);
-}
-
-u8 GetDummy2(void)
-{
-    return sDummy2;
-}
-
-void sub_800832C(void)
-{
-    if (!gLinkCallback)
-    {
-        gLinkCallback = sub_8008350;
-        gLinkDummyBool = FALSE;
-    }
-}
-
-static void sub_8008350(void)
-{
-    if (gLastRecvQueueCount == 0)
-    {
-        BuildSendCmd(0x5FFF);
-        gLinkCallback = sub_800837C;
-    }
-}
-
-static void sub_800837C(void)
-{
-    s32 i;
-    s32 totalCount = GetLinkPlayerCount();
-    s32 count = 0;
-
-    for (i = 0; i < totalCount; i++)
-        if (u8_array_3002B78[i])
-            count++;
-
-    if (count == totalCount)
-    {
-        gBattleTypeFlags &= ~BATTLE_TYPE_20;
-        gLinkVSyncDisabled = TRUE;
-        CloseLink();
-        gLinkCallback = NULL;
-        gLinkDummyBool = TRUE;
-    }
-}
-
-static void sub_80083E0(void)
-{
-    s32 i;
-    s32 totalCount = GetLinkPlayerCount();
-    s32 count = 0;
-
-    for (i = 0; i < totalCount; i++)
-    {
-        if (gLinkPlayers[i].language == 1)
-            count++;
-        else if (u8_array_3002B78[i])
-            count++;
-    }
-
-    if (count == totalCount)
-    {
-        gBattleTypeFlags &= ~BATTLE_TYPE_20;
-        gLinkVSyncDisabled = TRUE;
-        CloseLink();
-        gLinkCallback = 0;
-        gLinkDummyBool = TRUE;
-    }
-}
-
-static void sub_8008454(void)
-{
-    if (gLastRecvQueueCount == 0)
-    {
-        BuildSendCmd(0x5FFF);
-        gLinkCallback = sub_80083E0;
-    }
-}
-
-void sub_8008480(void)
-{
-    if (!gLinkCallback)
-    {
-        gLinkCallback = sub_8008454;
-        gLinkDummyBool = FALSE;
-    }
-}
-
-void sub_80084A4(void)
-{
-    if (!gLinkCallback)
-        gLinkCallback = sub_80084C8;
-    gLinkDummyBool = FALSE;
-}
-
-static void sub_80084C8(void)
-{
-    if (gLastRecvQueueCount == 0)
-    {
-        BuildSendCmd(0x2FFE);
-        gLinkCallback = sub_80084F4;
-    }
-}
-
-static void sub_80084F4(void)
-{
-    u8 totalCount = GetLinkPlayerCount();
-    u8 count = 0;
-
-    while (count < totalCount && u8_array_3002B70[count])
-        count++;
-
-    if (count == totalCount)
-    {
-        u8 i;
-        for (i = 0; i < 4; i++)
-            u8_array_3002B70[i] = 0;
-        gLinkCallback = NULL;
-    }
-}
-
-static void CheckErrorStatus(void)
-{
-    if (gLinkOpen)
-    {
-        if (gLinkStatus & LINK_STAT_ERRORS)
-        {
-            if (!gSuppressLinkErrorMessage)
-            {
-                sErrorLinkStatus = gLinkStatus;
-                sErrorLastRecvQueueCount = gLastRecvQueueCount;
-                sErrorLastSendQueueCount = gLastSendQueueCount;
-                SetMainCallback2(CB2_LinkError);
-            }
-            gLinkErrorOccurred = TRUE;
-            CloseLink();
-        }
-    }
-}
-
-void CB2_LinkError(void)
-{
-    ResetSpriteData();
-    FreeAllSpritePalettes();
-    ResetPaletteFadeControl();
-    FillPalette(0, 0, 2);
-    ResetTasks();
-    SetVBlankCallback(VBlankCB_LinkTest);
-    SetUpWindowConfig(&gWindowConfig_81E7198);
-    InitMenuWindow((struct WindowConfig *)&gWindowConfig_81E7198);
-    MenuZeroFillScreen();
-    REG_BLDALPHA = 0;
-    REG_BG0VOFS = 0;
-    REG_BG0HOFS = 0;
-    REG_DISPCNT = DISPCNT_MODE_0 | DISPCNT_OBJ_1D_MAP | DISPCNT_BG0_ON;
-    gSoftResetDisabled = FALSE;
-    CreateTask(Task_DestroySelf, 0);
-    StopMapMusic();
-    RunTasks();
-    AnimateSprites();
-    BuildOamBuffer();
-    UpdatePaletteFade();
-    SetMainCallback2(CB2_PrintErrorMessage);
-}
-
-static void CB2_PrintErrorMessage(void)
-{
-    u8 array[64] __attribute__((unused)); // unused
-
-    switch (gMain.state)
-    {
-    case 0:
-        MenuPrint_PixelCoords(gMultiText_LinkError, 20, 56, 1);
-        break;
-    case 30:
-    case 60:
-        PlaySE(SE_BOO);
-        break;
-    case 90:
-        PlaySE(SE_BOO);
-        break;
-    }
-
-    if (gMain.state != 200)
-        gMain.state++;
-}
-
-u8 GetSioMultiSI(void)
-{
-    return (REG_SIOCNT >> SIO_MULTI_SI_SHIFT) & SIO_MULTI_SI_MASK;
-}
-
-static bool8 IsSioMultiMaster(void)
-{
-    bool8 isMaster = FALSE;
-
-    if ((REG_SIOCNT & SIO_MULTI_SD) && !(REG_SIOCNT & SIO_MULTI_SI))
-        isMaster = TRUE;
-
-    return isMaster;
-}
-
-bool8 IsLinkConnectionEstablished(void)
-{
-    return EXTRACT_CONN_ESTABLISHED(gLinkStatus);
-}
-
-void SetSuppressLinkErrorMessage(bool8 value)
-{
-    gSuppressLinkErrorMessage = value;
-}
-
-bool8 HasLinkErrorOccurred(void)
-{
-    return gLinkErrorOccurred;
-}
-
-static void DisableSerial(void)
-{
-    gLinkSavedIme = REG_IME;
-    REG_IME = 0;
-    REG_IE &= ~(INTR_FLAG_TIMER3 | INTR_FLAG_SERIAL);
-    REG_IME = gLinkSavedIme;
-
-    REG_SIOCNT = 0;
-    REG_TM3CNT_H = 0;
-    REG_IF = INTR_FLAG_TIMER3 | INTR_FLAG_SERIAL;
-
-    CpuFill32(0, &gLink, sizeof(gLink));
-}
-
-static void EnableSerial(void)
-{
-    gLinkSavedIme = REG_IME;
-    REG_IME = 0;
-    REG_IE &= ~(INTR_FLAG_TIMER3 | INTR_FLAG_SERIAL);
-    REG_IME = gLinkSavedIme;
-
-    REG_RCNT = 0;
-
-    REG_SIOCNT = SIO_MULTI_MODE;
-    REG_SIOCNT |= SIO_INTR_ENABLE | SIO_115200_BPS;
-
-    gLinkSavedIme = REG_IME;
-    REG_IME = 0;
-    REG_IE |= INTR_FLAG_SERIAL;
-    REG_IME = gLinkSavedIme;
-
-    REG_SIOMLT_SEND = 0;
-
-    CpuFill32(0, &gLink, sizeof(gLink));
-
-    sNumVBlanksWithoutSerialIntr = 0;
-    sSendNonzeroCheck = 0;
-    sRecvNonzeroCheck = 0;
-    sChecksumAvailable = FALSE;
-    sHandshakePlayerCount = 0;
-    gLastSendQueueCount = 0;
-    gLastRecvQueueCount = 0;
-}
-
-void ResetSerial(void)
-{
-    EnableSerial();
-    DisableSerial();
-}
-
-u32 LinkMain1(u8 *shouldAdvanceLinkState, u16 *sendCmd, u16 recvCmds[CMD_LENGTH][MAX_LINK_PLAYERS])
-{
-    u32 retVal;
-    u32 retVal2;
-
-    switch (gLink.state)
-    {
-    case LINK_STATE_START0:
-        DisableSerial();
-        gLink.state = LINK_STATE_START1;
-        break;
-    case LINK_STATE_START1:
-        if (*shouldAdvanceLinkState == 1)
-        {
-            EnableSerial();
-            gLink.state = LINK_STATE_HANDSHAKE;
-        }
-        break;
-    case LINK_STATE_HANDSHAKE:
-        switch (*shouldAdvanceLinkState)
-        {
-        case 1:
-            if (gLink.isMaster == 8 && gLink.playerCount > 1)
-                gLink.handshakeAsMaster = TRUE;
-            break;
-        case 2:
-            gLink.state = LINK_STATE_START0;
-            REG_SIOMLT_SEND = 0;
-            break;
-        default:
-            CheckMasterOrSlave();
-            break;
-        }
-        break;
-    case LINK_STATE_INIT_TIMER:
-        InitTimer();
-        gLink.state = LINK_STATE_CONN_ESTABLISHED;
-    case LINK_STATE_CONN_ESTABLISHED:
-        EnqueueSendCmd(sendCmd);
-        DequeueRecvCmds(recvCmds);
-        break;
-    }
-
-    *shouldAdvanceLinkState = 0;
-
-    retVal = gLink.localId;
-    retVal |= (gLink.playerCount << 2);
-
-    if (gLink.isMaster == 8)
-        retVal |= 0x20;
-
-    {
-        u32 receivedNothing = gLink.receivedNothing << 8;
-        u32 link_field_F = gLink.link_field_F << 9;
-        u32 hardwareError = gLink.hardwareError << 12;
-        u32 badChecksum = gLink.badChecksum << 13;
-        u32 queueFull = gLink.queueFull << 14;
-        u32 val;
-
-        if (gLink.state == LINK_STATE_CONN_ESTABLISHED)
-        {
-            val = 0x40;
-            val |= receivedNothing;
-            val |= retVal;
-            val |= link_field_F;
-            val |= hardwareError;
-            val |= badChecksum;
-            val |= queueFull;
-        }
-        else
-        {
-            val = retVal;
-            val |= receivedNothing;
-            val |= link_field_F;
-            val |= hardwareError;
-            val |= badChecksum;
-            val |= queueFull;
-        }
-
-        retVal = val;
-    }
-
-    if (gLink.lag == LAG_MASTER)
-        retVal |= 0x10000;
-
-    if (gLink.localId > 3)
-        retVal |= 0x20000;
-
-    retVal2 = retVal;
-    if (gLink.lag == LAG_SLAVE)
-        retVal2 |= 0x40000;
-
-    return retVal2;
-}
-
-static void CheckMasterOrSlave(void)
-{
-    u32 terminals = *(u32 *)REG_ADDR_SIOCNT & (SIO_MULTI_SD | SIO_MULTI_SI);
-
-    if (terminals == SIO_MULTI_SD && !gLink.localId)
-        gLink.isMaster = 8;
-    else
-        gLink.isMaster = 0;
-}
-
-static void InitTimer(void)
-{
-    if (gLink.isMaster)
-    {
-        REG_TM3CNT_L = 65339;
-        REG_TM3CNT_H = TIMER_INTR_ENABLE | TIMER_64CLK;
-
-        gLinkSavedIme = REG_IME;
-        REG_IME = 0;
-        REG_IE |= INTR_FLAG_TIMER3;
-        REG_IME = gLinkSavedIme;
-    }
-}
-
-static void EnqueueSendCmd(u16 *sendCmd)
-{
-    gLinkSavedIme = REG_IME;
-    REG_IME = 0;
-
-    if (gLink.sendQueue.count < QUEUE_CAPACITY)
-    {
-        u8 i;
-        u8 offset = gLink.sendQueue.pos + gLink.sendQueue.count;
-
-        if (offset >= QUEUE_CAPACITY)
-            offset -= QUEUE_CAPACITY;
-
-        for (i = 0; i < CMD_LENGTH; i++)
-        {
-            sSendNonzeroCheck |= *sendCmd;
-            gLink.sendQueue.data[i][offset] = *sendCmd;
-            *sendCmd = 0;
-            sendCmd++;
-        }
-    }
-    else
-    {
-        gLink.queueFull = QUEUE_FULL_SEND;
-    }
-
-    if (sSendNonzeroCheck)
-    {
-        gLink.sendQueue.count++;
-        sSendNonzeroCheck = 0;
-    }
-
-    REG_IME = gLinkSavedIme;
-    gLastSendQueueCount = gLink.sendQueue.count;
-}
-
-void DequeueRecvCmds(u16 recvCmds[CMD_LENGTH][MAX_LINK_PLAYERS])
-{
-    u8 i;
-    u8 j;
-
-    gLinkSavedIme = REG_IME;
-    REG_IME = 0;
-
-    if (gLink.recvQueue.count == 0)
-    {
-        for (i = 0; i < CMD_LENGTH; i++)
-            for (j = 0; j < gLink.playerCount; j++)
-                recvCmds[i][j] = 0;
-
-        gLink.receivedNothing = TRUE;
-    }
-    else
-    {
-        for (i = 0; i < CMD_LENGTH; i++)
-            for (j = 0; j < gLink.playerCount; j++)
-                recvCmds[i][j] = gLink.recvQueue.data[j][i][gLink.recvQueue.pos];
-
-        gLink.recvQueue.count--;
-        gLink.recvQueue.pos++;
-
-        if (gLink.recvQueue.pos >= QUEUE_CAPACITY)
-            gLink.recvQueue.pos = 0;
-
-        gLink.receivedNothing = FALSE;
-    }
-
-    REG_IME = gLinkSavedIme;
-}
-
-void LinkVSync(void)
-{
-    if (gLink.isMaster)
-    {
-        switch (gLink.state)
-        {
-        case LINK_STATE_HANDSHAKE:
-            StartTransfer();
-            break;
-        case LINK_STATE_CONN_ESTABLISHED:
-            if (gLink.serialIntrCounter > 8)
-            {
-                if (gLink.lag == LAG_MASTER)
-                    return;
-                gLink.serialIntrCounter = 0;
-            }
-            else if (gLink.hardwareError != TRUE)
-            {
-                gLink.lag = LAG_MASTER;
-                return;
-            }
-            StartTransfer();
-            break;
-        }
-    }
-    else if (gLink.state == LINK_STATE_CONN_ESTABLISHED
-          || gLink.state == LINK_STATE_HANDSHAKE)
-    {
-        sNumVBlanksWithoutSerialIntr++;
-
-        if (sNumVBlanksWithoutSerialIntr > 10)
-        {
-            if (gLink.state == LINK_STATE_CONN_ESTABLISHED)
-                gLink.lag = LAG_SLAVE;
-
-            if (gLink.state == LINK_STATE_HANDSHAKE)
-            {
-                gLink.playerCount = 0;
-                gLink.link_field_F = 0;
-            }
-        }
-    }
-}
-
-void Timer3Intr(void)
-{
-    StopTimer();
-    StartTransfer();
-}
-
-void SerialCB(void)
-{
-    gLink.localId = SIO_MULTI_CNT->id;
-
-    switch (gLink.state)
-    {
-    case LINK_STATE_CONN_ESTABLISHED:
-        gLink.hardwareError = SIO_MULTI_CNT->error;
-        DoRecv();
-        DoSend();
-        SendRecvDone();
-        break;
-    case LINK_STATE_HANDSHAKE:
-        if (DoHandshake())
-        {
-            if (gLink.isMaster)
-            {
-                gLink.state = LINK_STATE_INIT_TIMER;
-                gLink.serialIntrCounter = 8;
-            }
-            else
-            {
-                gLink.state = LINK_STATE_CONN_ESTABLISHED;
-            }
-        }
-        break;
-    }
-
-    gLink.serialIntrCounter++;
-    sNumVBlanksWithoutSerialIntr = 0;
-
-    if (gLink.serialIntrCounter == 8)
-        gLastRecvQueueCount = gLink.recvQueue.count;
-}
-
-static void StartTransfer(void)
-{
-    REG_SIOCNT |= SIO_START;
-}
-
-static bool8 DoHandshake(void)
-{
-    u8 i;
-    u8 playerCount = 0;
-    u16 minRecv = 0xFFFF;
-
-    if (gLink.handshakeAsMaster == TRUE)
-        REG_SIOMLT_SEND = MASTER_HANDSHAKE;
-    else
-        REG_SIOMLT_SEND = SLAVE_HANDSHAKE;
-
-    *(u64 *)&gLink.tempRecvBuffer[0] = REG_SIOMLT_RECV;
-    REG_SIOMLT_RECV = 0;
-
-    gLink.handshakeAsMaster = FALSE;
-
-    for (i = 0; i < 4; i++)
-    {
-        if ((gLink.tempRecvBuffer[i] & ~0x3) == SLAVE_HANDSHAKE
-         || gLink.tempRecvBuffer[i] == MASTER_HANDSHAKE)
-        {
-            playerCount++;
-
-            if (minRecv > gLink.tempRecvBuffer[i] && gLink.tempRecvBuffer[i] != 0)
-                minRecv = gLink.tempRecvBuffer[i];
-        }
-        else
-        {
-            if (gLink.tempRecvBuffer[i] != 0xFFFF)
-                playerCount = 0;
-            break;
-        }
-    }
-
-    gLink.playerCount = playerCount;
-
-    // The handshake is successful when:
-    // 1. There are multiple players.
-    // 2. The number of players agrees with the last attempt.
-    // 3. Player no. 0 is identifying as the master.
-    if (gLink.playerCount > 1
-     && gLink.playerCount == sHandshakePlayerCount
-     && gLink.tempRecvBuffer[0] == MASTER_HANDSHAKE)
-        return TRUE;
-
-    if (gLink.playerCount > 1)
-        gLink.link_field_F = (minRecv & 3) + 1;
-    else
-        gLink.link_field_F = 0;
-
-    sHandshakePlayerCount = gLink.playerCount;
-
-    return FALSE;
-}
-
-static void DoRecv(void)
-{
-    u16 recvBuffer[4];
-    u8 i;
-
-    *(u64 *)&recvBuffer[0] = REG_SIOMLT_RECV;
-
-    if (gLink.sendCmdIndex == 0)
-    {
-        for (i = 0; i < gLink.playerCount; i++)
-            if (gLink.checksum != recvBuffer[i] && sChecksumAvailable)
-                    gLink.badChecksum = TRUE;
-
-        gLink.checksum = 0;
-        sChecksumAvailable = TRUE;
-    }
-    else
-    {
-        u8 index = gLink.recvQueue.pos + gLink.recvQueue.count;
-
-        if (index >= QUEUE_CAPACITY)
-            index -= QUEUE_CAPACITY;
-
-        if (gLink.recvQueue.count < QUEUE_CAPACITY)
-        {
-            for (i = 0; i < gLink.playerCount; i++)
-            {
-                gLink.checksum += recvBuffer[i];
-                sRecvNonzeroCheck |= recvBuffer[i];
-                gLink.recvQueue.data[i][gLink.recvCmdIndex][index] = recvBuffer[i];
-            }
-        }
-        else
-        {
-            gLink.queueFull = QUEUE_FULL_RECV;
-        }
-
-        gLink.recvCmdIndex++;
-
-        if (gLink.recvCmdIndex == CMD_LENGTH && sRecvNonzeroCheck)
-        {
-            gLink.recvQueue.count++;
-            sRecvNonzeroCheck = 0;
-        }
-    }
-}
-
-static void DoSend(void)
-{
-    if (gLink.sendCmdIndex == CMD_LENGTH)
-    {
-        REG_SIOMLT_SEND = gLink.checksum;
-
-        if (!sSendBufferEmpty)
-        {
-            gLink.sendQueue.count--;
-            gLink.sendQueue.pos++;
-
-            if (gLink.sendQueue.pos >= QUEUE_CAPACITY)
-                gLink.sendQueue.pos = 0;
-        }
-        else
-        {
-            sSendBufferEmpty = FALSE;
-        }
-    }
-    else
-    {
-        if (!sSendBufferEmpty && gLink.sendQueue.count == 0)
-            sSendBufferEmpty = TRUE;
-
-        if (sSendBufferEmpty)
-            REG_SIOMLT_SEND = 0;
-        else
-            REG_SIOMLT_SEND = gLink.sendQueue.data[gLink.sendCmdIndex][gLink.sendQueue.pos];
-
-        gLink.sendCmdIndex++;
-    }
-}
-
-static void StopTimer(void)
-{
-    if (gLink.isMaster)
-    {
-        REG_TM3CNT_H &= ~TIMER_ENABLE;
-        REG_TM3CNT_L = 65339;
-    }
-}
-
-static void SendRecvDone(void)
-{
-    if (gLink.recvCmdIndex == CMD_LENGTH)
-    {
-        gLink.sendCmdIndex = 0;
-        gLink.recvCmdIndex = 0;
-    }
-    else if (gLink.isMaster)
-    {
-        REG_TM3CNT_H |= TIMER_ENABLE;
-    }
-}
-
-void ResetSendBuffer(void)
-{
-    u8 i;
-    u8 j;
-
-    gLink.sendQueue.count = 0;
-    gLink.sendQueue.pos = 0;
-
-    for (i = 0; i < CMD_LENGTH; i++)
-        for (j = 0; j < QUEUE_CAPACITY; j++)
-            gLink.sendQueue.data[i][j] = 0xEFFF;
-}
-
-void ResetRecvBuffer(void)
-{
-    u8 i;
-    u8 j;
-    u8 k;
-
-    gLink.recvQueue.count = 0;
-    gLink.recvQueue.pos = 0;
-
-    for (i = 0; i < 4; i++)
-        for (j = 0; j < CMD_LENGTH; j++)
-            for (k = 0; k < QUEUE_CAPACITY; k++)
-                gLink.recvQueue.data[i][j][k] = 0xEFFF;
-}