According to headers of source files, this package is released under the terms of the MIT (X11) license. Please update LICENSE in all ebuilds.
+ 29 Nov 2012; Sergey Popov <pinkbyte@gentoo.org> simh-3.3.0.ebuild, + simh-3.8.1.ebuild, simh-3.9.0-r1.ebuild: + Set proper license for package, wrt bug #444474. Thanks to Ulrich Müller for + discovering this issue