var y; varexo eps; parameters rho1 rho2; rho1 = 0.1; rho2 = 0.2; model; log(y) = rho1*log(y(-1)) + rho2*log(y(-2)) + eps; end; initval; y=1; eps=0; end; steady; check; shocks; var eps; periods 1:9; values -0.0104; end; simul(periods=100);