displaying images very fast

[duindain]

Im trying to display a sequence of images at 40ms intervals but inbetween each image directrt seems to go to a black screen for some time is there a way to eliminate this
is it from the loading time it takes directrt to load the new image to be displayed surely there is a way to load stim into ram rather than loading from disk if that is the problem

&exp2F06F 0,0,1 40 *
&exp2F06F 0,0,1 40 *
&exp2F06F 0,0,1 40 *
&exp2F06F 0,0,1 40 *
this is what im trying to do

i have tried 0,0,0 as well and the black screen still comes up