diff --git a/Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp b/Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp
index 00b197821..9aae38de7 100644
--- a/Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp
+++ b/Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp
@@ -134,7 +134,7 @@ R4300iOp::Func * R4300iOp::BuildInterpreter()
     Jump_Opcode[21] = BNEL;
     Jump_Opcode[22] = BLEZL;
     Jump_Opcode[23] = BGTZL;
-    Jump_Opcode[24] = UnknownOpcode;
+    Jump_Opcode[24] = DADDI;
     Jump_Opcode[25] = DADDIU;
     Jump_Opcode[26] = LDL;
     Jump_Opcode[27] = LDR;
@@ -977,6 +977,11 @@ void R4300iOp::BGTZL()
     }
 }
 
+void R4300iOp::DADDI()
+{
+    _GPR[m_Opcode.rt].DW = _GPR[m_Opcode.rs].DW + (int64_t)((int16_t)m_Opcode.immediate);
+}
+
 void R4300iOp::DADDIU()
 {
     _GPR[m_Opcode.rt].DW = _GPR[m_Opcode.rs].DW + (int64_t)((int16_t)m_Opcode.immediate);
diff --git a/Source/Project64-core/N64System/Interpreter/InterpreterOps.h b/Source/Project64-core/N64System/Interpreter/InterpreterOps.h
index c17e96d12..9963e5a6f 100644
--- a/Source/Project64-core/N64System/Interpreter/InterpreterOps.h
+++ b/Source/Project64-core/N64System/Interpreter/InterpreterOps.h
@@ -31,6 +31,7 @@ public:
     static void BNEL();
     static void BLEZL();
     static void BGTZL();
+    static void DADDI();
     static void DADDIU();
     static void LDL();
     static void LDR();
diff --git a/Source/Project64-core/N64System/Interpreter/InterpreterOps32.cpp b/Source/Project64-core/N64System/Interpreter/InterpreterOps32.cpp
index adc199e56..d13105788 100644
--- a/Source/Project64-core/N64System/Interpreter/InterpreterOps32.cpp
+++ b/Source/Project64-core/N64System/Interpreter/InterpreterOps32.cpp
@@ -43,7 +43,7 @@ R4300iOp32::Func * R4300iOp32::BuildInterpreter()
     Jump_Opcode[21] = BNEL;
     Jump_Opcode[22] = BLEZL;
     Jump_Opcode[23] = BGTZL;
-    Jump_Opcode[24] = R4300iOp::UnknownOpcode;
+    Jump_Opcode[24] = R4300iOp::DADDI;
     Jump_Opcode[25] = R4300iOp::DADDIU;
     Jump_Opcode[26] = R4300iOp::LDL;
     Jump_Opcode[27] = R4300iOp::LDR;
diff --git a/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.cpp b/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.cpp
index 8580e38f5..4adc270bc 100644
--- a/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.cpp
+++ b/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.cpp
@@ -2106,6 +2106,20 @@ void CArmRecompilerOps::LUI()
     m_RegWorkingSet.SetMipsRegState(m_Opcode.rt, CRegInfo::STATE_CONST_32_SIGN);
 }
 
+void CArmRecompilerOps::DADDI()
+{
+    if (m_Opcode.rs != 0) { WriteBack_GPR(m_Opcode.rs, false); }
+    if (m_Opcode.rt != 0) { UnMap_GPR(m_Opcode.rt, true); }
+    if (g_Settings->LoadBool(Game_32Bit))
+    {
+        CompileInterpterCall((void *)R4300iOp32::DADDI, "R4300iOp32::DADDI");
+    }
+    else
+    {
+        CompileInterpterCall((void *)R4300iOp::DADDI, "R4300iOp::DADDI");
+    }
+}
+
 void CArmRecompilerOps::DADDIU()
 {
     if (m_Opcode.rs != 0) { WriteBack_GPR(m_Opcode.rs, false); }
diff --git a/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.h b/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.h
index 4a3de5e44..bf683ec69 100644
--- a/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.h
+++ b/Source/Project64-core/N64System/Recompiler/Arm/ArmRecompilerOps.h
@@ -42,6 +42,7 @@ public:
     void ORI();
     void XORI();
     void LUI();
+    void DADDI();
     void DADDIU();
     void LDL();
     void LDR();
diff --git a/Source/Project64-core/N64System/Recompiler/CodeSection.cpp b/Source/Project64-core/N64System/Recompiler/CodeSection.cpp
index 4a5c5ea66..d2aed8b45 100644
--- a/Source/Project64-core/N64System/Recompiler/CodeSection.cpp
+++ b/Source/Project64-core/N64System/Recompiler/CodeSection.cpp
@@ -567,6 +567,7 @@ bool CCodeSection::GenerateNativeCode(uint32_t Test)
         case R4300i_BNEL: m_RecompilerOps->Compile_BranchLikely(CRecompilerOps::CompareTypeBNE, false); break;
         case R4300i_BGTZL: m_RecompilerOps->Compile_BranchLikely(CRecompilerOps::CompareTypeBGTZ, false); break;
         case R4300i_BLEZL: m_RecompilerOps->Compile_BranchLikely(CRecompilerOps::CompareTypeBLEZ, false); break;
+        case R4300i_DADDI: m_RecompilerOps->DADDI(); break;
         case R4300i_DADDIU: m_RecompilerOps->DADDIU(); break;
         case R4300i_LDL: m_RecompilerOps->LDL(); break;
         case R4300i_LDR: m_RecompilerOps->LDR(); break;
diff --git a/Source/Project64-core/N64System/Recompiler/RecompilerOps.h b/Source/Project64-core/N64System/Recompiler/RecompilerOps.h
index c3425a639..aca02728e 100644
--- a/Source/Project64-core/N64System/Recompiler/RecompilerOps.h
+++ b/Source/Project64-core/N64System/Recompiler/RecompilerOps.h
@@ -59,6 +59,7 @@ public:
     virtual void ORI() = 0;
     virtual void XORI() = 0;
     virtual void LUI() = 0;
+    virtual void DADDI() = 0;
     virtual void DADDIU() = 0;
     virtual void LDL() = 0;
     virtual void LDR() = 0;
diff --git a/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp b/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp
index 27ee78aa5..07a38139c 100644
--- a/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp
+++ b/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp
@@ -2614,6 +2614,24 @@ void CX86RecompilerOps::LUI()
     m_RegWorkingSet.SetMipsRegState(m_Opcode.rt, CRegInfo::STATE_CONST_32_SIGN);
 }
 
+void CX86RecompilerOps::DADDI()
+{
+    if (m_Opcode.rs != 0)
+    {
+        UnMap_GPR(m_Opcode.rs, true);
+    }
+
+    if (m_Opcode.rs != 0)
+    {
+        UnMap_GPR(m_Opcode.rt, true);
+    }
+
+    m_RegWorkingSet.BeforeCallDirect();
+    MoveConstToVariable(m_Opcode.Value, &R4300iOp::m_Opcode.Value, "R4300iOp::m_Opcode.Value");
+    Call_Direct((void *)R4300iOp::DADDI, "R4300iOp::DADDI");
+    m_RegWorkingSet.AfterCallDirect();
+}
+
 void CX86RecompilerOps::DADDIU()
 {
     if (m_Opcode.rs != 0)
diff --git a/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.h b/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.h
index fa593f089..00b97130e 100644
--- a/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.h
+++ b/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.h
@@ -55,6 +55,7 @@ public:
     void ORI();
     void XORI();
     void LUI();
+    void DADDI();
     void DADDIU();
     void LDL();
     void LDR();