diff --git a/src/acpi/aml/namedobj.rs b/src/acpi/aml/namedobj.rs
index 203d20a..1123535 100644
--- a/src/acpi/aml/namedobj.rs
+++ b/src/acpi/aml/namedobj.rs
@@ -148,6 +148,96 @@ impl AmlExecutable for NamedObj {
                     }
                 }
             },
+            NamedObj::DefCreateBitField { ref name, ref source_buf, ref bit_index } => {
+                let local_scope_string = get_namespace_string(scope.clone(), name.clone());
+                
+                let resolved_source_buf = match source_buf.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+                let resolved_index = match bit_index.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+
+                namespace.insert(local_scope_string, AmlValue::BufferField {
+                    source_buf: resolved_source_buf,
+                    index: resolved_index,
+                    length: 1
+                });
+            },
+            NamedObj::DefCreateByteField { ref name, ref source_buf, ref byte_index } => {
+                let local_scope_string = get_namespace_string(scope.clone(), name.clone());
+                
+                let resolved_source_buf = match source_buf.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+                let resolved_index = match byte_index.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+
+                namespace.insert(local_scope_string, AmlValue::BufferField {
+                    source_buf: resolved_source_buf,
+                    index: resolved_index,
+                    length: 8
+                });
+            },
+            NamedObj::DefCreateWordField { ref name, ref source_buf, ref byte_index } => {
+                let local_scope_string = get_namespace_string(scope.clone(), name.clone());
+                
+                let resolved_source_buf = match source_buf.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+                let resolved_index = match byte_index.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+
+                namespace.insert(local_scope_string, AmlValue::BufferField {
+                    source_buf: resolved_source_buf,
+                    index: resolved_index,
+                    length: 16
+                });
+            },
+            NamedObj::DefCreateDWordField { ref name, ref source_buf, ref byte_index } => {
+                let local_scope_string = get_namespace_string(scope.clone(), name.clone());
+                
+                let resolved_source_buf = match source_buf.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+                let resolved_index = match byte_index.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+
+                namespace.insert(local_scope_string, AmlValue::BufferField {
+                    source_buf: resolved_source_buf,
+                    index: resolved_index,
+                    length: 32
+                });
+            },
+            NamedObj::DefCreateQWordField { ref name, ref source_buf, ref byte_index } => {
+                let local_scope_string = get_namespace_string(scope.clone(), name.clone());
+                
+                let resolved_source_buf = match source_buf.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+                let resolved_index = match byte_index.execute(namespace, scope.clone()) {
+                    Some(r) => Box::new(r),
+                    _ => return None
+                };
+
+                namespace.insert(local_scope_string, AmlValue::BufferField {
+                    source_buf: resolved_source_buf,
+                    index: resolved_index,
+                    length: 64
+                });
+            },
             NamedObj::DefOpRegion { ref name, ref region, ref offset, ref len } => {
                 let local_scope_string = get_namespace_string(scope.clone(), name.clone());
 
diff --git a/src/acpi/aml/namespace.rs b/src/acpi/aml/namespace.rs
index 0e99aaf..f95a25a 100644
--- a/src/acpi/aml/namespace.rs
+++ b/src/acpi/aml/namespace.rs
@@ -13,7 +13,11 @@ use super::namestring::SuperName;
 pub enum AmlValue {
     Uninitialized,
     Buffer,
-    BufferField,
+    BufferField {
+        source_buf: Box<AmlValue>,
+        index: Box<AmlValue>,
+        length: usize
+    },
     DDBHandle,
     DebugObject,
     Device(BTreeMap<String, AmlValue>),