1 files changed, 2 insertions, 0 deletions
diff --git a/qtmips_machine/alu.cpp b/qtmips_machine/alu.cpp
index 2e36d4c..36b1ac7 100644
--- a/qtmips_machine/alu.cpp
+++ b/qtmips_machine/alu.cpp
@@ -71,6 +71,8 @@ std::uint32_t machine::alu_operate(enum AluOp operation, std::uint32_t s, std::u
             return (s < t) ? 1 : 0;
         case ALU_OP_LUI:
             return t << 16;
+        case  ALU_OP_PASS_S: // Pass s argument without change for JAL
+            return s;
         default:
             throw QTMIPS_EXCEPTION(UnsupportedAluOperation, "Unknown ALU operation", QString::number(operation, 16));
     }