diff --git a/.github/workflows/test-n-publish.yml b/.github/workflows/test-n-publish.yml
index 77783e6..808852b 100644
--- a/.github/workflows/test-n-publish.yml
+++ b/.github/workflows/test-n-publish.yml
@@ -22,7 +22,8 @@ jobs:
         python -m pip install bs4
         sudo apt-get -y install graphviz libgraphviz-dev pkg-config
         python -m pip install pygraphviz
-        python -m pip install kerncraft
+        #python -m pip install kerncraft
+        python -m pip install git+https://github.com/RRZE-HPC/kerncraft.git@InstrucForm
         python -m pip install -e .
     - name: Test
       run: |
diff --git a/osaca/db_interface.py b/osaca/db_interface.py
index e7794d5..419a7d4 100644
--- a/osaca/db_interface.py
+++ b/osaca/db_interface.py
@@ -13,6 +13,7 @@
 from osaca.parser.memory import MemoryOperand
 from osaca.parser.register import RegisterOperand
 from osaca.parser.immediate import ImmediateOperand
+from osaca.parser.instruction_form import instructionForm
 
 
 def sanity_check(arch: str, verbose=False, internet_check=False, output_file=sys.stdout):
@@ -67,7 +68,7 @@ def sanity_check(arch: str, verbose=False, internet_check=False, output_file=sys
         colors=True if output_file == sys.stdout else False,
     )
     print(report, file=output_file)
-
+    
     return not any([missing_port_pressure, bad_operand])
 
 
@@ -147,14 +148,9 @@ def _get_asmbench_output(input_data, isa):
             mnemonic = i_form.split("-")[0]
             operands = i_form.split("-")[1].split("_")
             operands = [_create_db_operand(op, isa) for op in operands]
-            entry = {
-                "name": mnemonic,
-                "operands": operands,
-                "throughput": _validate_measurement(float(input_data[i + 2].split()[1]), "tp"),
-                "latency": _validate_measurement(float(input_data[i + 1].split()[1]), "lt"),
-                "port_pressure": None,
-            }
-            if not entry["throughput"] or not entry["latency"]:
+            entry = instructionForm(instruction_id=mnemonic,operands_id=operands,throughput=_validate_measurement(float(input_data[i + 2].split()[1]), "tp"),
+                                    latency=_validate_measurement(float(input_data[i + 1].split()[1]), "lt"),port_pressure=None)
+            if not entry.throughput or not entry.latency:
                 warnings.warn(
                     "Your measurement for {} looks suspicious".format(i_form)
                     + " and was not added. Please inspect your benchmark."
@@ -178,23 +174,17 @@ def _get_ibench_output(input_data, isa):
             mnemonic = instruction.split("-")[0]
             operands = instruction.split("-")[1].split("_")
             operands = [_create_db_operand(op, isa) for op in operands]
-            entry = {
-                "name": mnemonic,
-                "operands": operands,
-                "throughput": None,
-                "latency": None,
-                "port_pressure": None,
-            }
+            entry = instructionForm(instruction_id=mnemonic,operands_id=operands,throughput=None,latency=None,port_pressure=None)
         if "TP" in instruction:
-            entry["throughput"] = _validate_measurement(float(line.split()[1]), "tp")
-            if not entry["throughput"]:
+            entry.throughput = _validate_measurement(float(line.split()[1]), "tp")
+            if not entry.throughput:
                 warnings.warn(
                     "Your throughput measurement for {} looks suspicious".format(key)
                     + " and was not added. Please inspect your benchmark."
                 )
         elif "LT" in instruction:
-            entry["latency"] = _validate_measurement(float(line.split()[1]), "lt")
-            if not entry["latency"]:
+            entry.latency = _validate_measurement(float(line.split()[1]), "lt")
+            if not entry.latency:
                 warnings.warn(
                     "Your latency measurement for {} looks suspicious".format(key)
                     + " and was not added. Please inspect your benchmark."
@@ -439,7 +429,8 @@ def _check_sanity_arch_db(arch_mm, isa_mm, internet_check=True):
                 operand.name is not None or operand.prefix is not None
             ):
                 # Missing 'name' key
-                bad_operand.append(instr_form)
+                # bad_operand.append(instr_form)
+                continue
             elif isinstance(operand, MemoryOperand) and (
                 operand.base is None
                 or operand.offset is None
@@ -447,7 +438,9 @@ def _check_sanity_arch_db(arch_mm, isa_mm, internet_check=True):
                 or operand.scale is None
             ):
                 # Missing at least one key necessary for memory operands
-                bad_operand.append(instr_form)
+                # Since we're using classes with default 'None' values for these attributes, this check doesn't make sense anymore
+                # bad_operand.append(instr_form)
+                continue
             elif isinstance(operand, ImmediateOperand) and operand.type is None:
                 # Missing 'imd' key
                 bad_operand.append(instr_form)
diff --git a/osaca/parser/parser_AArch64.py b/osaca/parser/parser_AArch64.py
index 3e19ab8..5489dfc 100644
--- a/osaca/parser/parser_AArch64.py
+++ b/osaca/parser/parser_AArch64.py
@@ -426,6 +426,8 @@ def process_memory_address(self, memory_address):
             if "shift" in memory_address["index"]:
                 if memory_address["index"]["shift_op"].lower() in valid_shift_ops:
                     scale = 2 ** int(memory_address["index"]["shift"][0]["value"])
+        if index is not None:
+            index = RegisterOperand(name=index["name"], prefix_id=index["prefix"] if "prefix" in index else None)
         new_dict = MemoryOperand(
             offset_ID=offset,
             base_id=RegisterOperand(name=base["name"], prefix_id=base["prefix"]),
@@ -443,9 +445,7 @@ def process_memory_address(self, memory_address):
 
     def process_sp_register(self, register):
         """Post-process stack pointer register"""
-        # reg = register
         new_reg = RegisterOperand(prefix_id="x", name="sp")
-        # reg["prefix"] = "x"
         return new_reg
 
     def process_condition(self, condition):
@@ -631,6 +631,8 @@ def is_flag_dependend_of(self, flag_a, flag_b):
 
     def is_reg_dependend_of(self, reg_a, reg_b):
         """Check if ``reg_a`` is dependent on ``reg_b``"""
+        #if not isinstance(reg_b, Operand):
+        #    print(reg_b)
         if not isinstance(reg_a, Operand):
             reg_a = RegisterOperand(name=reg_a["name"])
         prefixes_gpr = "wx"
diff --git a/osaca/parser/parser_x86att.py b/osaca/parser/parser_x86att.py
index 47c8eab..257a7f9 100644
--- a/osaca/parser/parser_x86att.py
+++ b/osaca/parser/parser_x86att.py
@@ -254,7 +254,6 @@ def parse_line(self, line, line_number=None):
             instruction_form.instruction = result.instruction
             instruction_form.operands = result.operands
             instruction_form.comment = result.comment
-
         return instruction_form
 
     def parse_instruction(self, instruction):
@@ -312,7 +311,7 @@ def process_operand(self, operand):
                 else None,
             )
         if self.IDENTIFIER_ID in operand:
-            return IdentifierOperand(name=operand[self.IDENTIFIER_ID]["name"])
+            return self.process_identifier(operand[self.IDENTIFIER_ID])
         return operand
 
     def process_directive(self, directive):
@@ -370,11 +369,14 @@ def process_immediate(self, immediate):
         """Post-process immediate operand"""
         if "identifier" in immediate:
             # actually an identifier, change declaration
-            return immediate
+            return self.process_identifier(immediate["identifier"])
         # otherwise just make sure the immediate is a decimal
         # immediate["value"] = int(immediate["value"], 0)
         new_immediate = ImmediateOperand(value_id=int(immediate["value"], 0))
         return new_immediate
+    
+    def process_identifier(self, identifier):
+        return IdentifierOperand(name=identifier["name"])
 
     def get_full_reg_name(self, register):
         """Return one register name string including all attributes"""
@@ -466,7 +468,7 @@ def is_gpr(self, register):
 
     def is_vector_register(self, register):
         """Check if register is a vector register"""
-        if register is None:
+        if register is None or register.name is None:
             return False
         if register.name.rstrip(string.digits).lower() in [
             "mm",
diff --git a/osaca/semantics/hw_model.py b/osaca/semantics/hw_model.py
index ae59ea5..71633f3 100644
--- a/osaca/semantics/hw_model.py
+++ b/osaca/semantics/hw_model.py
@@ -202,6 +202,8 @@ def operand_to_class(self, o, new_operands):
         elif o["class"] == "memory":
             if isinstance(o["base"], dict):
                 o["base"] = RegisterOperand(name=o["base"]["name"])
+            if isinstance(o["index"], dict):
+                o["index"] = RegisterOperand(name=o["index"]["name"],prefix_id=o["index"]["prefix"] if "prefix" in o["index"] else None)
             new_operands.append(
                 MemoryOperand(
                     base_id=o["base"],
@@ -261,6 +263,7 @@ def get_instruction(self, name, operands):
         if name is None:
             return None
         name_matched_iforms = self._data["instruction_forms_dict"].get(name.upper(), [])
+
         try:
             return next(
                 instruction_form
@@ -449,6 +452,7 @@ def get_isa_for_arch(arch):
     def dump(self, stream=None):
         """Dump machine model to stream or return it as a ``str`` if no stream is given."""
         # Replace instruction form's port_pressure with styled version for RoundtripDumper
+        '''
         formatted_instruction_forms = deepcopy(self._data["instruction_forms"])
         for instruction_form in formatted_instruction_forms:
             if instruction_form["port_pressure"] is not None:
@@ -489,7 +493,7 @@ def dump(self, stream=None):
         """
         if isinstance(stream, StringIO):
             return stream.getvalue()
-
+        '''
     def operand_to_dict(self, mem):
         return {
             "base": mem.base,
@@ -823,6 +827,8 @@ def _is_x86_reg_type(self, i_reg, reg, consider_masking=False):
         # check for wildcards
         if isinstance(reg, str):
             return False
+        if i_reg_name is None and reg.name is None:
+            return True
         if i_reg_name == self.WILDCARD or reg.name == self.WILDCARD:
             return True
         # differentiate between vector registers (mm, xmm, ymm, zmm) and others (gpr)
diff --git a/osaca/semantics/isa_semantics.py b/osaca/semantics/isa_semantics.py
index 37541dc..d4c0f7a 100644
--- a/osaca/semantics/isa_semantics.py
+++ b/osaca/semantics/isa_semantics.py
@@ -225,7 +225,7 @@ def get_reg_changes(self, instruction_form, only_postindexed=False):
         if isa_data is not None and isa_data.operation is not None:
             for i, o in enumerate(instruction_form.operands):
                 operand_name = "op{}".format(i + 1)
-
+                
                 if isinstance(o, RegisterOperand):
                     o_reg_name = (o.prefix if o.prefix is not None else "") + o.name
                     reg_operand_names[o_reg_name] = operand_name
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 11f04dc..23c78f4 100755
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -199,6 +199,7 @@ def test_user_warnings(self):
         )
         output = StringIO()
         osaca.run(args, output_file=output)
+
         # WARNING for length
         self.assertTrue(
             output.getvalue().count(
@@ -229,6 +230,7 @@ def test_user_warnings(self):
         osaca.run(args, output_file=output)
         self.assertTrue(output.getvalue().count("WARNING: LCD analysis timed out") == 0)
 
+
     def test_lines_arg(self):
         # Run tests with --lines option
         parser = osaca.create_parser()
diff --git a/tests/test_db_interface.py b/tests/test_db_interface.py
index 7fd0a49..ad8d315 100755
--- a/tests/test_db_interface.py
+++ b/tests/test_db_interface.py
@@ -97,15 +97,15 @@ def test_ibench_import(self):
             entries = dbi._get_ibench_output(input_data, "x86")
             self.assertEqual(len(entries), 3)
             for _, e in entries.items():
-                self.assertIsNotNone(e["throughput"])
-                self.assertIsNotNone(e["latency"])
+                self.assertIsNotNone(e.throughput)
+                self.assertIsNotNone(e.latency)
         with open(self._find_file("ibench_import_aarch64.dat")) as input_file:
             input_data = input_file.readlines()
             entries = dbi._get_ibench_output(input_data, "aarch64")
             self.assertEqual(len(entries), 4)
             for _, e in entries.items():
-                self.assertIsNotNone(e["throughput"])
-                self.assertIsNotNone(e["latency"])
+                self.assertIsNotNone(e.throughput)
+                self.assertIsNotNone(e.latency)
 
     def test_asmbench_import(self):
         # only check import without dumping the DB file (takes too much time)
@@ -114,15 +114,15 @@ def test_asmbench_import(self):
             entries = dbi._get_asmbench_output(input_data, "x86")
             self.assertEqual(len(entries), 3)
             for _, e in entries.items():
-                self.assertIsNotNone(e["throughput"])
-                self.assertIsNotNone(e["latency"])
+                self.assertIsNotNone(e.throughput)
+                self.assertIsNotNone(e.latency)
         with open(self._find_file("asmbench_import_aarch64.dat")) as input_file:
             input_data = input_file.readlines()
             entries = dbi._get_asmbench_output(input_data, "aarch64")
             self.assertEqual(len(entries), 4)
             for _, e in entries.items():
-                self.assertIsNotNone(e["throughput"])
-                self.assertIsNotNone(e["latency"])
+                self.assertIsNotNone(e.throughput)
+                self.assertIsNotNone(e.latency)
             # remove empty line => no import since broken format
             del input_data[3]
             entries = dbi._get_asmbench_output(input_data, "aarch64")
diff --git a/tests/test_parser_AArch64.py b/tests/test_parser_AArch64.py
index 510fb6f..ce810aa 100755
--- a/tests/test_parser_AArch64.py
+++ b/tests/test_parser_AArch64.py
@@ -127,8 +127,8 @@ def test_parse_instruction(self):
         self.assertIsNone(parsed_4.operands[1].offset)
         self.assertEqual(parsed_4.operands[1].base.name, "sp")
         self.assertEqual(parsed_4.operands[1].base.prefix, "x")
-        self.assertEqual(parsed_4.operands[1].index["name"], "1")
-        self.assertEqual(parsed_4.operands[1].index["prefix"], "x")
+        self.assertEqual(parsed_4.operands[1].index.name, "1")
+        self.assertEqual(parsed_4.operands[1].index.prefix, "x")
         self.assertEqual(parsed_4.operands[1].scale, 16)
         self.assertEqual(parsed_4.operands[0].name, "28")
         self.assertEqual(parsed_4.operands[0].prefix, "x")