diff --git a/configure.py b/configure.py
index 33222ae5..619766fe 100644
--- a/configure.py
+++ b/configure.py
@@ -769,7 +769,7 @@ config.libs = [
             Object(NonMatching, "jaudio_NES/internal/driver.c"),
             Object(NonMatching, "jaudio_NES/internal/driverinterface.c"),
             Object(Matching, "jaudio_NES/internal/dsp_cardunlock.c"),
-            Object(NonMatching, "jaudio_NES/internal/dsp_GBAKey.c"),
+            Object(Matching, "jaudio_NES/internal/dsp_GBAKey.c"),
             Object(NonMatching, "jaudio_NES/internal/dspdriver.c"),
             Object(NonMatching, "jaudio_NES/internal/dspinterface.c"),
             Object(NonMatching, "jaudio_NES/internal/effect.c"),
diff --git a/include/GBA/GBAPriv.h b/include/GBA/GBAPriv.h
index 05ce2ab1..2c7359b9 100644
--- a/include/GBA/GBAPriv.h
+++ b/include/GBA/GBAPriv.h
@@ -76,7 +76,7 @@ s32 __GBASync(s32 chan);
 OSTime __GBASetDelay(s32 chan, OSTime delay);
 s32 __GBATransfer(s32 chan, u32 outputBytes, u32 inputBytes, GBATransferCallback proc);
 void __GBAX01(s32 chan, s32 ret);
-void __GBAX02(s32 chan, u8* readbuf);
+// void __GBAX02(s32 chan, u8* readbuf);
 
 #ifdef __cplusplus
 }
diff --git a/include/jaudio_NES/dsp_GBAKey.h b/include/jaudio_NES/dsp_GBAKey.h
new file mode 100644
index 00000000..6a028fec
--- /dev/null
+++ b/include/jaudio_NES/dsp_GBAKey.h
@@ -0,0 +1,16 @@
+#ifndef JAUDIO_DSP_GBAKEY_H
+#define JAUDIO_DSP_GBAKEY_H
+
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void __GBAX02(s32 chan, u8* readbuf);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* JAUDIO_DSP_GBAKEY_H */
diff --git a/include/jaudio_NES/ipldec.h b/include/jaudio_NES/ipldec.h
index e20a0cd0..7f6fd828 100644
--- a/include/jaudio_NES/ipldec.h
+++ b/include/jaudio_NES/ipldec.h
@@ -8,6 +8,7 @@
 // Global functions (all C++, so no extern C wrap).
 BOOL DspExtraTaskCheck();
 void Jac_DSPcardDecodeAsync(void*, void*, DSPCallback);
+void Jac_DSPagbDecodeAsync(void* task, void* cmd, DSPCallback callback);
 
 // IPL Decode specific structs.
 
diff --git a/src/static/dolphin/gba/GBAJoyBoot.c b/src/static/dolphin/gba/GBAJoyBoot.c
index 8346f51f..e64583e3 100644
--- a/src/static/dolphin/gba/GBAJoyBoot.c
+++ b/src/static/dolphin/gba/GBAJoyBoot.c
@@ -1,5 +1,7 @@
 #include "GBA/GBAPriv.h"
 
+#include "jaudio_NES/dsp_GBAKey.h"
+
 static volatile u8 D54[] = {
     0x18, 0xFC, 0xC0, 0x80, 0x7f, 0x40, 0x3f, 0x01, 0x00, 0x2f, 0x2f, 0x20, 0x43, 0x6f, 0x64,
     0x65, 0x64, 0x20, 0x62, 0x79, 0x20, 0x4b, 0x61, 0x77, 0x61, 0x73, 0x65, 0x64, 0x6f, 0x00,
diff --git a/src/static/dolphin/gba/GBAKey.c b/src/static/dolphin/gba/GBAKey.c
deleted file mode 100644
index b523a765..00000000
--- a/src/static/dolphin/gba/GBAKey.c
+++ /dev/null
@@ -1,21 +0,0 @@
-#include "gba/GBAPriv.h"
-#include "dolphin/dsp.h"
-
-static s32 F152(DSPTaskInfo* task) {
-    s32 chan; // r31
-    GBAControl* gba = &__GBA[chan]; // r29
-
-    for (chan = 0; chan < 4; chan++) {
-        if (&gba->task == task) {
-            return chan;
-        }
-    }
-    
-    ASSERTLINE(168, 0 <= chan && chan < 4);
-    ASSERTMSGLINE(169, FALSE, "GBA - unexpected dsp call");
-    return -1;
-}
-
-void __GBAX02(s32 chan, u8* readbuf) {
-    
-}
diff --git a/src/static/jaudio_NES/dsp_GBAKey.c b/src/static/jaudio_NES/internal/dsp_GBAKey.c
similarity index 80%
rename from src/static/jaudio_NES/dsp_GBAKey.c
rename to src/static/jaudio_NES/internal/dsp_GBAKey.c
index 386bbfbe..281f37d4 100644
--- a/src/static/jaudio_NES/dsp_GBAKey.c
+++ b/src/static/jaudio_NES/internal/dsp_GBAKey.c
@@ -1,9 +1,12 @@
-#include "gba/GBAPriv.h"
-#include "dolphin/os.h"
-#include "_mem.h"
+#undef DEBUG
+#define DEBUG 1
 
-//TODO: remove this once ipldec is decompiled
-extern void Jac_DSPagbDecodeAsync(void*, void*, void (*)(void*));
+#include "jaudio_NES/dsp_GBAKey.h"
+
+#include "jaudio_NES/ipldec.h"
+#include "gba/GBAPriv.h"
+#include "dolphin/dsp.h"
+#include "_mem.h"
 
 static s32 F152(DSPTaskInfo* task) {
     s32 chan; // r31
@@ -16,7 +19,7 @@ static s32 F152(DSPTaskInfo* task) {
         }
     }
     
-    (void)((0 <= chan && chan < 4) || (OSPanic(__FILE__, 173, "Failed assertion 0 <= chan && chan < 4"), 0));
+    ASSERTLINE(173, 0 <= chan && chan < 4);
     OSPanic(__FILE__, 174, "GBA - unexpected dsp call");
     return -1;
 }