  An upgraded analysis of $\ep$, $x_d$ and $\epp/\ep$, using the latest
determinations of the relevant experimental and theoretical parameters, is
presented. Using the recent determination of the top quark mass, $m_t=(174 \pm
17)$ GeV, our best estimate is $\epp/\ep= 3.1 \pm 2.5 $, which lies in the
range given by E731. We describe our determination of $\epp/\ep$ and make a
comparison with other similar studies. A detailed discussion of the matching of
the full theory to the effective Hamiltonian, written in terms of lattice
operators, is also given.
