diff --git a/configure.py b/configure.py
index 8b8eda8f..461517dc 100755
--- a/configure.py
+++ b/configure.py
@@ -1194,6 +1194,7 @@ config.libs = [
             Object(Matching, "musyx/runtime/dsp_import.c"),
             Object(Matching, "musyx/runtime/hw_dolphin.c"),
             Object(Matching, "musyx/runtime/hw_memory.c"),
+            Object(Matching, "musyx/runtime/hw_lib_dummy.c"),
             Object(Matching, "musyx/runtime/CheapReverb/creverb_fx.c"),
             Object(Matching, "musyx/runtime/CheapReverb/creverb.c"),
             Object(Matching, "musyx/runtime/StdReverb/reverb_fx.c"),
diff --git a/include/musyx/hardware.h b/include/musyx/hardware.h
index da88f97d..dc4f1d36 100644
--- a/include/musyx/hardware.h
+++ b/include/musyx/hardware.h
@@ -35,6 +35,8 @@ void hwSetFilter(unsigned long v, unsigned char mode, unsigned short coefA, unsi
 void hwLowPassFrqToCoef(unsigned long frq, unsigned short* _a0, unsigned short* _b1);
 #endif
 
+extern u32 aramSize;
+extern u8* aramBase;
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/musyx/musyx_priv.h b/include/musyx/musyx_priv.h
index 5fc82e2b..f28df748 100644
--- a/include/musyx/musyx_priv.h
+++ b/include/musyx/musyx_priv.h
@@ -513,7 +513,7 @@ typedef struct SYNTH_VOICE {
   u32 id;                                 // offset 0xF4, size 0x4
   VID_LIST* vidList;                      // offset 0xF8, size 0x4
   VID_LIST* vidMasterList;                // offset 0xFC, size 0x4
-#if MUSY_VERSION <= MUSY_VERSION_CHECK(2, 0, 0)
+#if MUSY_VERSION > MUSY_VERSION_CHECK(1, 5, 3) && MUSY_VERSION <= MUSY_VERSION_CHECK(2, 0, 0)
   u16 allocId; // offset 0x100, size 0x2
 #else
   u32 allocId;
diff --git a/include/musyx/synth.h b/include/musyx/synth.h
index 7a8c7e74..fc1c9d0d 100644
--- a/include/musyx/synth.h
+++ b/include/musyx/synth.h
@@ -36,7 +36,7 @@ bool synthIsFadeOutActive(u8 vGroup);
 /* TODO: Move this where it belongs */
 void hwSetAUXProcessingCallbacks(u8 studio, SND_AUX_CALLBACK auxA, void* userA,
                                  SND_AUX_CALLBACK auxB, void* userB);
-
+u32 voiceBlock(u8 prio);
 MSTEP* dataGetMacro(u16 mid);
 
 u32 voiceAllocate(u8 priority, u8 maxVoices, u16 allocId, u8 fxFlag);
diff --git a/src/musyx/runtime/hw_lib_dummy.c b/src/musyx/runtime/hw_lib_dummy.c
new file mode 100644
index 00000000..c8856bd3
--- /dev/null
+++ b/src/musyx/runtime/hw_lib_dummy.c
@@ -0,0 +1,4 @@
+#include "musyx/musyx.h"
+
+u32 aramSize = 0;
+u8* aramBase = NULL;
diff --git a/src/musyx/runtime/synthvoice.c b/src/musyx/runtime/synthvoice.c
index f7fad91c..6a837897 100644
--- a/src/musyx/runtime/synthvoice.c
+++ b/src/musyx/runtime/synthvoice.c
@@ -350,7 +350,7 @@ void synthInitAllocationAids() {
   voiceMusicRunning = 0;
 }
 
-u32 voiceBlock(unsigned char prio) {
+u32 voiceBlock(u8 prio) {
   u32 voice;
 
   if ((voice = voiceAllocate(prio, 0xFF, 0xFFFF, 1)) != 0xFFFFFFFF) {