.   The purpose of this procedure is to notify the system operator of
. a catastrophic error has occurred in the system. There is no
. point in passing the problem back up the caller-callee chain. All
. that can be done is notify the operator and stop.
.
.     OSP$SYSTEM_ERROR (ERROR_MESSAGE, STATUS)
.
. ERROR_MESSAGE: (input) This parameter specifies the error message
.     to be displayed. This parameter has been provided to indicate
.     the system area that failed without changing the status variable.
.
. STATUS: (input) This parameter specifies the status of the caller.
.     It is assumed to be abnormal and is not changed by this procedure.
.
. REGISTERS: (output) A14 - caller's P address.
.                     A15 - address of STATUS variable.
.
.                     X12 - current setting for STATUS.CONDITION
.            X13,X14,X15 - FIRST 24 bytes of ERROR_MESSAGE
.
