curr_ydstorg
mga_outl(M_YDSTORG, curr_ydstorg(minfo));
start = sy*vxres+sx+curr_ydstorg(minfo);
end = (sy+height-1)*vxres+sx+curr_ydstorg(minfo);
start = sy*vxres+sx+curr_ydstorg(minfo);
end = (sy+height-1)*vxres+sx+curr_ydstorg(minfo);