diff --git a/.vscode/settings.json b/.vscode/settings.json
index ac4cca7f..bd742134 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -68,7 +68,8 @@
     "roll.h": "c",
     "msghndlr.h": "c",
     "dispatch.h": "c",
-    "trk.h": "c"
+    "trk.h": "c",
+    "debuggerdriver.h": "c"
   },
   "search.useIgnoreFiles": false,
   "search.exclude": {
diff --git a/configure.py b/configure.py
index 5613bb0e..371fe507 100644
--- a/configure.py
+++ b/configure.py
@@ -252,7 +252,7 @@ cflags_trk = [
 
 cflags_odemuexi = [
     *cflags_base,
-    # TODO figure out flags
+    "-inline auto,deferred",
 ]
 
 if version_num > 0:
@@ -805,7 +805,7 @@ config.libs = [
         "cflags": cflags_odemuexi,
         "host": False,
         "objects": [
-            Object(MatchingFor("GMPE01_01"), "OdemuExi2/DebuggerDriver.c"),
+            Object(MatchingFor("GMPE01_00", "GMPE01_01"), "OdemuExi2/DebuggerDriver.c"),
         ],
     },
     {
diff --git a/src/OdemuExi2/DebuggerDriver.c b/src/OdemuExi2/DebuggerDriver.c
index eb1415a9..cbfeae99 100644
--- a/src/OdemuExi2/DebuggerDriver.c
+++ b/src/OdemuExi2/DebuggerDriver.c
@@ -22,274 +22,15 @@ static u8 SendCount = 0x80;
 #define IS_FALSE(x) !IS_TRUE(x)
 #define ROUND_UP(x, align) (((x) + (align)-1) & (-(align)))
 
-// TODO
+static void DBGEXIInit();
+static u32 DBGEXISelect(u32 v);
+static void CheckMailBox(void);
+static void MWCallback(u32 a, OSContext *b);
+static void DBGHandler(s16 a, OSContext *b);
 
-void DBGEXIInit()
-{
-    __OSMaskInterrupts(0x18000);
-    __EXIRegs[10] = 0;
-}
+void DBClose(void) { }
 
-static u32 DBGEXISelect(u32 v)
-{
-    u32 regs = __EXIRegs[10];
-    regs &= 0x405;
-    regs |= 0x80 | (v << 4);
-    __EXIRegs[10] = regs;
-    return TRUE;
-}
-
-BOOL DBGEXIDeselect(void)
-{
-    __EXIRegs[10] &= 0x405;
-    return TRUE;
-}
-
-static BOOL DBGEXISync()
-{
-    while (__EXIRegs[13] & 1)
-        ;
-
-    return TRUE;
-}
-
-static BOOL DBGEXIImm(void *buffer, s32 bytecounter, u32 write)
-{
-    u8 *tempPointer;
-    u32 writeOutValue;
-    int i;
-
-    if (write) {
-        tempPointer = buffer;
-        writeOutValue = 0;
-        for (i = 0; i < bytecounter; i++) {
-            u8 *temp = ((u8 *)buffer) + i;
-            writeOutValue |= *temp << ((3 - i) << 3);
-        }
-        __EXIRegs[14] = writeOutValue;
-    }
-
-    __EXIRegs[13] = 1 | write << 2 | (bytecounter - 1) << 4;
-    DBGEXISync();
-
-    if (!write) {
-        writeOutValue = __EXIRegs[14];
-        tempPointer = buffer;
-        for (i = 0; i < bytecounter; i++) {
-            *tempPointer++ = writeOutValue >> ((3 - i) << 3);
-        }
-    }
-
-    return TRUE;
-}
-
-static BOOL DBGWriteMailbox(u32 p1)
-{
-    u32 cmd = 0xc0000000;
-    u32 v;
-    u32 base = p1;
-    BOOL total = FALSE;
-
-    DBGEXISelect(4);
-    v = (base & 0x1fffffff) | (cmd);
-    total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 1));
-    total |= IS_FALSE(DBGEXISync());
-    total |= IS_FALSE(DBGEXIDeselect());
-
-    return IS_FALSE(total);
-}
-
-#pragma dont_inline on
-static BOOL DBGReadMailbox(u32 *p1)
-{
-    BOOL total = FALSE;
-    u32 v;
-
-    DBGEXISelect(4);
-
-    v = 0x60000000;
-    total |= IS_FALSE(DBGEXIImm(&v, 2, 1));
-    total |= IS_FALSE(DBGEXISync());
-
-    total |= IS_FALSE(DBGEXIImm(p1, 4, 0));
-    total |= IS_FALSE(DBGEXISync());
-
-    total |= IS_FALSE(DBGEXIDeselect());
-
-    return IS_FALSE(total);
-}
-#pragma dont_inline reset
-
-static BOOL DBGRead(u32 count, u32 *buffer, s32 param3)
-{
-    BOOL total = FALSE;
-    u32 *buf_p = (u32 *)buffer;
-    u32 v1;
-    u32 v;
-
-    DBGEXISelect(4);
-
-    v1 = (count & 0x1fffc) << 8 | 0x20000000;
-    total |= IS_FALSE(DBGEXIImm(&v1, sizeof(v1), 1));
-    total |= IS_FALSE(DBGEXISync());
-
-    while (param3) {
-        total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 0));
-        total |= IS_FALSE(DBGEXISync());
-
-        *buf_p++ = v;
-
-        param3 -= 4;
-        if (param3 < 0) {
-            param3 = 0;
-        }
-    }
-
-    total |= IS_FALSE(DBGEXIDeselect());
-    return IS_FALSE(total);
-}
-
-static BOOL DBGWrite(u32 count, void *buffer, s32 param3)
-{
-    BOOL total = FALSE;
-    u32 *buf_p = (u32 *)buffer;
-    u32 v1;
-    u32 v;
-
-    DBGEXISelect(4);
-
-    v1 = (count & 0x1fffc) << 8 | 0xa0000000;
-    total |= IS_FALSE(DBGEXIImm(&v1, sizeof(v1), 1));
-    total |= IS_FALSE(DBGEXISync());
-
-    while (param3 != 0) {
-        v = *buf_p++;
-
-        total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 1));
-        total |= IS_FALSE(DBGEXISync());
-
-        param3 -= 4;
-        if (param3 < 0) {
-            param3 = 0;
-        }
-    }
-
-    total |= IS_FALSE(DBGEXIDeselect());
-    return IS_FALSE(total);
-}
-
-static BOOL _DBGReadStatus(u32 *p1)
-{
-    BOOL total = FALSE;
-    u32 v;
-
-    DBGEXISelect(4);
-
-    v = 1 << 30;
-    total |= IS_FALSE(DBGEXIImm(&v, 2, 1));
-    total |= IS_FALSE(DBGEXISync());
-
-    total |= IS_FALSE(DBGEXIImm(p1, 4, 0));
-    total |= IS_FALSE(DBGEXISync());
-
-    total |= IS_FALSE(DBGEXIDeselect());
-
-    return IS_FALSE(total);
-}
-
-static BOOL DBGReadStatus(u32 *p1)
-{
-    return _DBGReadStatus(p1);
-}
-
-static void MWCallback(u32 a, OSContext *b)
-{
-    EXIInputFlag = TRUE;
-    if (MTRCallback) {
-        MTRCallback(0);
-    }
-}
-
-static void DBGHandler(s16 a, OSContext *b)
-{
-    *__PIRegs = 0x1000;
-    if (DBGCallback) {
-        DBGCallback(a, b);
-    }
-}
-
-void DBInitComm(u8 **a, MTRCallbackType b)
-{
-    BOOL interrupts = OSDisableInterrupts();
-    {
-        pEXIInputFlag = (u8 *)EXIInputFlag;
-        pEXIInputFlag = &EXIInputFlag;
-
-        *a = pEXIInputFlag;
-
-        MTRCallback = b;
-
-        DBGEXIInit();
-    }
-    OSRestoreInterrupts(interrupts);
-}
-
-void DBInitInterrupts(void)
-{
-    __OSMaskInterrupts(0x18000);
-    __OSMaskInterrupts(0x40);
-    DBGCallback = &MWCallback;
-    __OSSetInterruptHandler(0x19, DBGHandler);
-    __OSUnmaskInterrupts(0x40);
-}
-
-static void CheckMailBox(void)
-{
-    u32 v;
-    DBGReadStatus(&v);
-    if (v & 1) {
-        DBGReadMailbox(&v);
-        v &= 0x1fffffff;
-
-        if ((v & 0x1f000000) == 0x1f000000) {
-            SendMailData = v;
-            RecvDataLeng = v & 0x7fff;
-            EXIInputFlag = 1;
-        }
-    }
-}
-
-u32 DBQueryData(void)
-{
-    BOOL interrupts;
-    EXIInputFlag = 0;
-    if (!RecvDataLeng) {
-        interrupts = OSDisableInterrupts();
-        CheckMailBox();
-#if VERSION > 0
-        OSRestoreInterrupts(interrupts);
-    }
-#else
-    }
-    OSRestoreInterrupts(interrupts);
-#endif
-    return RecvDataLeng;
-}
-
-BOOL DBRead(u32 *buffer, s32 count)
-{
-    u32 interrupts = OSDisableInterrupts();
-    u32 v = SendMailData & 0x10000 ? 0x1000 : 0;
-
-    DBGRead(v + 0x1e000, buffer, ROUND_UP(count, 4));
-
-    RecvDataLeng = 0;
-    EXIInputFlag = 0;
-
-    OSRestoreInterrupts(interrupts);
-
-    return 0;
-}
+void DBOpen(void) { }
 
 BOOL DBWrite(void *src, u32 size)
 {
@@ -325,6 +66,275 @@ BOOL DBWrite(void *src, u32 size)
     return 0;
 }
 
-void DBOpen(void) { }
+BOOL DBRead(u32 *buffer, s32 count)
+{
+    u32 interrupts = OSDisableInterrupts();
+    u32 v = SendMailData & 0x10000 ? 0x1000 : 0;
 
-void DBClose(void) { }
+    DBGRead(v + 0x1e000, buffer, ROUND_UP(count, 4));
+
+    RecvDataLeng = 0;
+    EXIInputFlag = 0;
+
+    OSRestoreInterrupts(interrupts);
+
+    return 0;
+}
+
+u32 DBQueryData(void)
+{
+    BOOL interrupts;
+    EXIInputFlag = 0;
+    if (!RecvDataLeng) {
+        interrupts = OSDisableInterrupts();
+        CheckMailBox();
+#if VERSION > 0
+        OSRestoreInterrupts(interrupts);
+    }
+#else
+    }
+    OSRestoreInterrupts(interrupts);
+#endif
+    return RecvDataLeng;
+}
+
+inline static void CheckMailBox(void)
+{
+    u32 v;
+    DBGReadStatus(&v);
+    if (v & 1) {
+        DBGReadMailbox(&v);
+        v &= 0x1fffffff;
+
+        if ((v & 0x1f000000) == 0x1f000000) {
+            SendMailData = v;
+            RecvDataLeng = v & 0x7fff;
+            EXIInputFlag = 1;
+        }
+    }
+}
+
+void DBInitInterrupts(void)
+{
+    __OSMaskInterrupts(0x18000);
+    __OSMaskInterrupts(0x40);
+    DBGCallback = &MWCallback;
+    __OSSetInterruptHandler(0x19, DBGHandler);
+    __OSUnmaskInterrupts(0x40);
+}
+
+void DBInitComm(u8 **a, MTRCallbackType b)
+{
+    BOOL interrupts = OSDisableInterrupts();
+    {
+        pEXIInputFlag = (u8 *)EXIInputFlag;
+        pEXIInputFlag = &EXIInputFlag;
+
+        *a = pEXIInputFlag;
+
+        MTRCallback = b;
+
+        DBGEXIInit();
+    }
+    OSRestoreInterrupts(interrupts);
+}
+
+inline static BOOL _DBGReadStatus(u32 *p1)
+{
+    BOOL total = FALSE;
+    u32 v;
+
+    DBGEXISelect(4);
+
+    v = 1 << 30;
+    total |= IS_FALSE(DBGEXIImm(&v, 2, 1));
+    total |= IS_FALSE(DBGEXISync());
+
+    total |= IS_FALSE(DBGEXIImm(p1, 4, 0));
+    total |= IS_FALSE(DBGEXISync());
+
+    total |= IS_FALSE(DBGEXIDeselect());
+
+    return IS_FALSE(total);
+}
+
+static void DBGHandler(s16 a, OSContext *b)
+{
+    *__PIRegs = 0x1000;
+    if (DBGCallback) {
+        DBGCallback(a, b);
+    }
+}
+
+static void MWCallback(u32 a, OSContext *b)
+{
+    EXIInputFlag = TRUE;
+    if (MTRCallback) {
+        MTRCallback(0);
+    }
+}
+
+#pragma push
+#pragma dont_inline on
+static BOOL DBGReadStatus(u32 *p1)
+{
+    return _DBGReadStatus(p1);
+}
+#pragma pop
+
+static BOOL DBGWrite(u32 count, void *buffer, s32 param3)
+{
+    BOOL total = FALSE;
+    u32 *buf_p = (u32 *)buffer;
+    u32 v1;
+    u32 v;
+
+    DBGEXISelect(4);
+
+    v1 = (count & 0x1fffc) << 8 | 0xa0000000;
+    total |= IS_FALSE(DBGEXIImm(&v1, sizeof(v1), 1));
+    total |= IS_FALSE(DBGEXISync());
+
+    while (param3 != 0) {
+        v = *buf_p++;
+
+        total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 1));
+        total |= IS_FALSE(DBGEXISync());
+
+        param3 -= 4;
+        if (param3 < 0) {
+            param3 = 0;
+        }
+    }
+
+    total |= IS_FALSE(DBGEXIDeselect());
+    return IS_FALSE(total);
+}
+
+static BOOL DBGRead(u32 count, u32 *buffer, s32 param3)
+{
+    BOOL total = FALSE;
+    u32 *buf_p = (u32 *)buffer;
+    u32 v1;
+    u32 v;
+
+    DBGEXISelect(4);
+
+    v1 = (count & 0x1fffc) << 8 | 0x20000000;
+    total |= IS_FALSE(DBGEXIImm(&v1, sizeof(v1), 1));
+    total |= IS_FALSE(DBGEXISync());
+
+    while (param3) {
+        total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 0));
+        total |= IS_FALSE(DBGEXISync());
+
+        *buf_p++ = v;
+
+        param3 -= 4;
+        if (param3 < 0) {
+            param3 = 0;
+        }
+    }
+
+    total |= IS_FALSE(DBGEXIDeselect());
+    return IS_FALSE(total);
+}
+
+#define TO_BOOL(x) (((u32)__cntlzw((x)) >> 5))
+#pragma push
+#pragma dont_inline on
+static BOOL DBGReadMailbox(u32* p1)
+{
+	u32 v;
+	u32 total = 0;
+    u32 stack0, stack1, stack2;
+
+    DBGEXISelect(4);
+
+	v = 0x60000000;
+	total |= !(DBGEXIImm(&v, 2, 1) != 0);
+	DBGEXISync();
+
+	total |= !(DBGEXIImm(p1, 4, 0) != 0);
+	DBGEXISync();
+
+    DBGEXIDeselect();
+    total = TO_BOOL(total);
+	return total;
+}
+#pragma pop
+
+inline static BOOL DBGWriteMailbox(u32 p1)
+{
+    u32 cmd = 0xc0000000;
+    u32 v;
+    u32 base = p1;
+    BOOL total = FALSE;
+
+    DBGEXISelect(4);
+    v = (base & 0x1fffffff) | (cmd);
+    total |= IS_FALSE(DBGEXIImm(&v, sizeof(v), 1));
+    total |= IS_FALSE(DBGEXISync());
+    total |= IS_FALSE(DBGEXIDeselect());
+
+    return IS_FALSE(total);
+}
+
+static BOOL DBGEXIImm(void *buffer, s32 bytecounter, u32 write)
+{
+    u8 *tempPointer;
+    u32 writeOutValue;
+    int i;
+
+    if (write) {
+        tempPointer = buffer;
+        writeOutValue = 0;
+        for (i = 0; i < bytecounter; i++) {
+            u8 *temp = ((u8 *)buffer) + i;
+            writeOutValue |= *temp << ((3 - i) << 3);
+        }
+        __EXIRegs[14] = writeOutValue;
+    }
+
+    __EXIRegs[13] = 1 | write << 2 | (bytecounter - 1) << 4;
+    DBGEXISync();
+
+    if (!write) {
+        writeOutValue = __EXIRegs[14];
+        tempPointer = buffer;
+        for (i = 0; i < bytecounter; i++) {
+            *tempPointer++ = writeOutValue >> ((3 - i) << 3);
+        }
+    }
+
+    return TRUE;
+}
+
+inline static BOOL DBGEXISync()
+{
+    while (__EXIRegs[13] & 1)
+        ;
+
+    return TRUE;
+}
+
+inline BOOL DBGEXIDeselect(void)
+{
+    __EXIRegs[10] &= 0x405;
+    return TRUE;
+}
+
+inline static u32 DBGEXISelect(u32 v)
+{
+    u32 regs = __EXIRegs[10];
+    regs &= 0x405;
+    regs |= 0x80 | (v << 4);
+    __EXIRegs[10] = regs;
+    return TRUE;
+}
+
+inline static void DBGEXIInit()
+{
+    __OSMaskInterrupts(0x18000);
+    __EXIRegs[10] = 0;
+}