  A generalized Hitchin equation was proposed as the BPS equation for a large
class of four dimensional N=1 theories engineered using M5 branes. In this
paper, we show how to write down the spectral curve for the moduli space of
generalized Hitchin equations, and extract interesting N=1 dynamics out of it,
such as deformed modui space, chiral ring relation, SUSY breaking, etc.
Holomorphy plays a crucial role in our construction.
