NAME
        ReadEClock -- Get the current value of the E-Clock. (V36)
   SYNOPSIS
        E_Freq = ReadEClock( Dest )
        D0                   A0
        ULONG ReadEClock ( struct eclockval * );
   FUNCTION
        This routine calculates the current 64 bit value of the E-Clock
        and stores it in the destination eclockval structure. the count
        rate of the E-Clock is also returned.
        A0 will be left unchanged
        This is a low overhead function designed so that very short
        intervals may be timed.
   INPUTS
        Dest -- pointer to an eclockval structure.
   RETURNS
        Dest -- the eclockval structure will contain the e-clock time
        E_Freq -- The count rate of the E-Clock (tics/sec).
   NOTES
        This function may be called from interrupts.
   SEE ALSO
   BUGS