  The well known Sandpile model of self-organized criticality generates
avalanches of all length and time scales, without tuning any parameters. In the
original models the external drive is randomly selected. Here we investigate a
drive which depends on the present state of the system, namely the effect of
favoring sites with a certain height in the deposition process. If sites with
height three are favored, the system stays in a critical state. Our numerical
results indicate the same universality class as the original model with random
depositition, although the stationary state is approached very differently. In
constrast, when favoring sites with height two, only avalanches which cover the
entire system occur. Furthermore, we investigate the distributions of sites
with a certain height, as well as the transient processes of the different
variants of the external drive.
