From Iris2

Contents 1 Ultima Online Files 2 pre 6.0 Files

Ultima Online Files

Iris2 needs the following Ultima Online (3D) Client files to work correctly:

    <DIR> Models <- whole Directory 
    <DIR> Music <- whole Directory 
    art.mul 
    artidx.mul 
    cliloc.* - every Cliloc - depends on the language 
    fonts.mul 
    gumpart.mul 
    gumpidx.mul 
    hues.mul 
    multi.idx 
    multi.mul 
    sound.mul 
    soundidx.mul 
    stitchin.def 
    body.def 
    bodyconv.def 
    equipconv.def 
    texidx.mul 
    texmaps.mul 
    tiledata.mul 
    unifont * .mul 
    speech.mul 
    radarcol.mul

also needed for 2D-Renderer

    anim.idx 
    anim.mul 
    animdata.mul 
    anim2.idx, anim2.mul, anim3.idx, anim3.mul, anim4.idx, anim4.mul, anim5.idx, anim5.mul
    animinfo.mul
    Body.def
    Bodyconv.def

depends on what Map your shard use (therefore you can edit Iris2\Data\xml\Maps.xml):

    map0.mul 
    map1.mul <- since Patch 6.0.0+ 
    map2.mul 
    map3.mul 
    map4.mul
    map5.mul
    staidx0.mul 
    staidx1.mul <- since Patch 6.0.0+ 
    staidx2.mul 
    staidx3.mul 
    staidx4.mul 
    staidx5.mul 
    statics0.mul 
    statics1.mul <- since Patch 6.0.0+ 
    statics2.mul 
    statics3.mul 
    statics4.mul 
    statics5.mul 

pre 6.0 Files

Only for Shards using or supporting the Ultima Online pre 6.0.0 Clients (see Iris2\Data\xml\Maps_pre6.xml ) statics diffs

    mapdifl*.mul 
    mapdif*.mul  - The format of this file maps exactly to Map#.mul. Each entry corresponds to the block id in Mapdifl*.mul. 

mapdiffs

    stadifi*.mul - The format of this file maps exactly to the format of staidx*.mul. 
    stadif*.mul  - The format of this file maps exactly to statics*.mul. This file is indexed by stadifi*.mul. 
    stadifl*.mul - Each entry of stadifi*.mul corresponds to the blockid in the stadifl*.mul.
                   The offset and length of the entires are the offset into stadif*.mul.