diff --git a/Core/Debugger.cpp b/Core/Debugger.cpp
index 823544a..0d145b6 100644
--- a/Core/Debugger.cpp
+++ b/Core/Debugger.cpp
@@ -465,6 +465,8 @@ AddressInfo Debugger::GetRelativeAddress(AddressInfo absAddress, CpuType cpuType
 	MemoryMappings* mappings = nullptr;
 	switch(cpuType) {
 		case CpuType::Cpu: mappings = _memoryManager->GetMemoryMappings(); break;
+		case CpuType::Spc: break;
+		case CpuType::NecDsp: break;
 		case CpuType::Sa1: mappings = _cart->GetSa1()->GetMemoryMappings(); break;
 		case CpuType::Gsu: mappings = _cart->GetGsu()->GetMemoryMappings(); break;
 		case CpuType::Cx4: mappings = _cart->GetCx4()->GetMemoryMappings(); break;
diff --git a/Core/NecDspDebugger.cpp b/Core/NecDspDebugger.cpp
index 3b03c18..e510571 100644
--- a/Core/NecDspDebugger.cpp
+++ b/Core/NecDspDebugger.cpp
@@ -32,7 +32,7 @@ void NecDspDebugger::Reset()
 
 void NecDspDebugger::ProcessRead(uint16_t addr, uint8_t value, MemoryOperationType type)
 {
-	AddressInfo addressInfo = { (uint32_t)addr, type == MemoryOperationType::ExecOpCode ? SnesMemoryType::DspProgramRom : SnesMemoryType::DspDataRom };
+	AddressInfo addressInfo = { (int32_t)addr, type == MemoryOperationType::ExecOpCode ? SnesMemoryType::DspProgramRom : SnesMemoryType::DspDataRom };
 	MemoryOperationInfo operation { (uint32_t)addr, value, type };
 
 	if(type == MemoryOperationType::ExecOpCode) {
diff --git a/Libretro/Makefile.common b/Libretro/Makefile.common
index 9f541fc..c710729 100644
--- a/Libretro/Makefile.common
+++ b/Libretro/Makefile.common
@@ -80,6 +80,7 @@ SOURCES_CXX := $(LIBRETRO_DIR)/libretro.cpp \
                $(CORE_DIR)/Msu1.cpp \
                $(CORE_DIR)/Multitap.cpp \
                $(CORE_DIR)/NecDsp.cpp \
+               $(CORE_DIR)/NecDspDebugger.cpp \
                $(CORE_DIR)/NecDspDisUtils.cpp \
                $(CORE_DIR)/NotificationManager.cpp \
                $(CORE_DIR)/NtscFilter.cpp \