diff --git a/src/spider/runtime/instr/Instr_000-01F.cpp b/src/spider/runtime/instr/Instr_000-01F.cpp
index b58e1ad..425ed25 100644
--- a/src/spider/runtime/instr/Instr_000-01F.cpp
+++ b/src/spider/runtime/instr/Instr_000-01F.cpp
@@ -297,14 +297,52 @@ namespace spider {
 
     void CPU::DMOD() {
         // TODO: Implement DMOD
+        fetchOperSrc();
+        fetchOperDst();
+        switch(_size){
+            case 0b00: //byte
+                _dst->_i8 = _dst->_i8 / _src->_i8, _dst->_i8 % _src->_i8;
+            case 0b01: //short
+                _dst->_i16 = _dst->_i16 / _src->_i16, _dst->_i16 % _src->_i16;
+            case 0b10: //int
+                _dst->_i32 = _dst->_i32 / _src->_i32, _dst->_i32 % _src->_i32;
+            case 0b11: //long
+                _dst->_i64 = _dst->_i64 / _src->_i64, _dst->_i64 % _src->_i64;
+        }
+        (this->*_post)();
     }
 
     void CPU::UDMD() {
         // TODO: Implement UDMD
+        fetchOperSrc();
+        fetchOperDst();
+        switch(_size){
+            case 0b00: //byte
+                _dst->_u8 = _dst->_u8 / _src->_u8, _dst->_u8 % _src->_u8;
+            case 0b01: //short
+                _dst->_u16 = _dst->_u16 / _src->_u16, _dst->_u16 % _src->_u16;
+            case 0b10: //int
+                _dst->_u32 = _dst->_u32 / _src->_u32, _dst->_u32 % _src->_u32;
+            case 0b11: //long
+                _dst->_u64 = _dst->_u64 / _src->_u64, _dst->_u64 % _src->_u64;
+        }
+        (this->*_post)();
     }
 
     void CPU::FBT() {
         // TODO: Implement FBT
+        fetchOperDst();
+        switch(_size){
+            case 0b00: //byte
+                _dst->_u8 = 1;
+            case 0b01: //short
+                _dst->_u16 = 1;
+            case 0b10: //int
+                _dst->_u32 = 1;
+            case 0b11: //long
+                _dst->_u64 = 1;
+        }
+        (this->*_post)();
     }
 
 }
diff --git a/src/spider/runtime/instr/Instr_020-03F.cpp b/src/spider/runtime/instr/Instr_020-03F.cpp
index 4ff096e..40166f7 100644
--- a/src/spider/runtime/instr/Instr_020-03F.cpp
+++ b/src/spider/runtime/instr/Instr_020-03F.cpp
@@ -9,18 +9,69 @@ namespace spider {
 
     void CPU::STB() {
         // TODO: Implement STB
+        fetchOperSrc();
+        fetchOperDst();
+        switch(_size){
+            case 0b00: //byte
+                _dst->_u8 = 1;
+            case 0b01: //short
+                _dst->_u16 = 1;
+            case 0b10: //int
+                _dst->_u32 = 1;
+            case 0b11: //long
+                _dst->_u64 = 1;
+        }
+        (this->*_post)();
     }
 
     void CPU::CRB() {
         // TODO: Implement CRB
+        fetchOperSrc();
+        fetchOperDst();
+        switch(_size){
+            case 0b00: //byte
+                _dst->_u8 = 1;
+            case 0b01: //short
+                _dst->_u16 = 1;
+            case 0b10: //int
+                _dst->_u32 = 1;
+            case 0b11: //long
+                _dst->_u64 = 1;
+        }
+        (this->*_post)();
     }
 
     void CPU::TSB() {
         // TODO: Implement TSB
+        fetchOperSrc();
+        fetchOperDst();
+        switch(_size){
+            case 0b00: //byte
+                _dst->_u8 = 1;
+            case 0b01: //short
+                _dst->_u16 = 1;
+            case 0b10: //int
+                _dst->_u32 = 1;
+            case 0b11: //long
+                _dst->_u64 = 1;
+        }
+        (this->*_post)();
     }
 
     void CPU::BOOL() {
         // TODO: Implement BOOL
+        fetchOperDst();
+        switch(_size){
+            case 0b00: //byte
+                _dst->_u8 = 1;
+            case 0b01: //short
+                _dst->_u16 = 1;
+            case 0b10: //int
+                _dst->_u32 = 1;
+            case 0b11: //long
+                _dst->_u64 = 1;
+        }
+        (this->*_post)();
     }
 
     void CPU::NOT() {