AMOS... on which this game was developed contains a bug...or limitation. The problem is that in the case of anim files, I cannot display frames whose data size (ANIM DLTA chunk) exceeds 32kb. This limit almost been crossed by the current game... In the case of AGA with 256 colors, we are talking about twice this, even with the same image size! I have already tried to solve the problem by manipulating the original AMOS source code, but unfortunately I was not successful.
And another problem... AGA support also available in unofficielal AMOS version only ...or as an extension. :/