ok, thanks guys!,

with the bmap_create_blitpart and some changes, i at last got it working,
i have now a 1024x1024 image, and 16x16 entities, with a 64x64 texture each,
so putting all tiles on the right position, side by side , i can see the whole image.
I have noticed a small image distortion on the borders of each tile, but its not very noticeable.
im now tryin to continue the game, i will post an image of the game as i get it to evolve to a real game.