diff --git a/crates/cpu/src/unit/alu_branch.rs b/crates/cpu/src/unit/alu_branch.rs
index 38c302f..14b4745 100644
--- a/crates/cpu/src/unit/alu_branch.rs
+++ b/crates/cpu/src/unit/alu_branch.rs
@@ -245,14 +245,12 @@ fn add_sub<C: PhantomConstCpuConfig, SrcCount: KnownSize>(
 #[hdl]
 fn logical_flags<C: PhantomConstCpuConfig>(
     global_state: Expr<GlobalState>,
-    pc: Expr<UInt<64>>,
     mop: Expr<LogicalFlagsMOp<PRegNum<C>, PRegNum<C>>>,
     src_values: Expr<Array<TraceAsString<PRegValue>, { COMMON_MOP_SRC_LEN }>>,
 ) -> Expr<TraceAsString<PRegValue>> {
     #[hdl]
-    let GlobalState { flags_mode } = global_state;
-    // TODO: finish
-    PRegValue::zeroed().to_trace_as_string()
+    let GlobalState { flags_mode: _ } = global_state;
+    LogicalFlagsMOp::operation(mop, src_values.map(|v| *v)).to_trace_as_string()
 }
 
 #[hdl]
@@ -896,10 +894,7 @@ pub fn alu_branch(config: PhantomConst<CpuConfig>, unit_index: usize) {
                         );
                     }
                     AluBranchMOp::<_, _>::LogicalFlags(mop) => {
-                        connect(
-                            dest_value,
-                            logical_flags(global_state, mop_instance.pc, mop, src_values),
-                        );
+                        connect(dest_value, logical_flags(global_state, mop, src_values));
                     }
                     AluBranchMOp::<_, _>::Logical(mop) => {
                         connect(