
  CONST

    mtk$job_entry_exit = mtk$assembly_language_base + 1,
      {EM 'ENTER 180 MONITOR MODE' 'MCR' H16 }
      {XM 'EXIT  180 MONITOR MODE'   }

    mtk$170_entry_exit = mtk$assembly_language_base + 2,
      {EC 'ENTER NOS 170' }
      {XC 'EXIT  NOS 170' 'MCR' H16 }

    mtk$monitor_mode_trap = mtk$assembly_language_base + 3,
      {ET 'ENTER MONITOR TRAP HANDLER' 'MCR' H16 }
      {XT 'EXIT  MONITOR TRAP HANDLER'  }

    mtk$job_mode_trap = mtk$assembly_language_base + 4;
      {ET 'ENTER JOB TRAP HANDLER' 'MCR' H16 }
      {XT 'EXIT  JOB TRAP HANDLER'  }
