EQUATION OF STATE FOR 2 FLAVOR QCD AT N-T=6

We calculate the two flavor equation of state for QCD on lattices with lattice spacing a=(6T)(-1) and find that cutoff effects are substanti ally reduced compared to an earlier study using a=(4T)(-1). However, i t is likely that significant cutoff effects remain. We fit the lattice data to expected forms of the free energy density for a second order phase transition at zero-quark mass, which allows us to extrapolate th e equation of state to m(q)=0 and to extract the speed of sound. We fi nd that the equation of state depends weakly on the quark mass for sma ll quark mass.