Problems with the s2r tool. Here it is below. (every step before this has been correct). $ s2r -c countchip countchip @@@@ @ @@ @@ @@ @@@@@@ @@@ @@ @@@ @@@ @@ @ @ @@ @@@ @@ @@@ @ @@ @@ @@@@ @ @@ @@@@ @ @@ @ @@@ @ @ @@ @@ @@ @@@@@@ @@ @ @@@@@ @@@@@@@ @@@@ Symbolic to Real layout converter Alliance CAD System 4.5.0, s2r 3.7 Copyright (c) 1991-2002, ASIM/LIP6/UPMC E-mail support: alliance-support@asim.lip6.fr o loading technology file : /usr/local/alliance/archi/Cygwin/etc/cmos_11 .rds o loading all level of symbolic layout : countchip o removing symbolic data structure o layout post-treating without connector, with scotchs. o replacing black boxes cif109: Layer unknown, line 11 Also, pls what is a BLACK BOX... referring to the options in s2r. Thanks GIIE --------------------------------- Do You Yahoo!? Send FREE video emails in Yahoo! Mail.