  We study the structure of the $RO(G)$-graded homotopy Mackey functors of any
Eilenberg-MacLane spectrum $H\underline{M}$ for $G$ a cyclic $p$-group. When
$\underline{R}$ is a Green functor, we define orientation classes $u_V$ for
$H\underline{R}$ and deduce a generalized gold relation. We deduce the
$a_V,u_V$-isomorphism regions of the $RO(G)$-graded homotopy Mackey functors
and prove two induction theorems. As applications, we compute the positive cone
of $H\underline{\mathbb{A}}$, as well as the positive and negative cones of
$H\underline{\mathbb{Z}}$. The latter two cones are essential to the slice
spectral sequences of $MU^{((C_{2^n}))}$ and its variants.
