TIME_CONTROL

   This special parameter is use by VSI and is subject to change. Do
   not change this parameter unless VSI recommends that you do so.

   TIME_CONTROL is an SMP bit mask parameter that controls debugging
   functions. The following bits are defined:

   Bit                    Description

   0                      Obsolete.

   1 (EXE$V_SANITY)       Disables the SMP sanity timer support.

   2 (EXE$V_NOSPINWAIT)   Disables the functional behavior of the
                          SMP spinwait support.

   TIME_CONTROL is a DYNAMIC parameter.