This is a request to add an ebuild for SmallBASIC to portage. Right now, the only BASIC interpreter in portage is Blassic. SmallBASIC is actively developed and looks to be a good alternative.
PLease attempt an ebuild http://www.gentoo.org/proj/en/devrel/handbook/handbook.xml?part=2&chap=1
Reopen if you have an ebuild. Meanwhile, marking LATER.