The CSK Research Institute subsidiary of CSK Corp, one of the largest Japanese software and services houses, has developed a variant of Common Lisp called CSK Amorphous Lisp, which runs on the Fujitsu Ltd FMR 70 personal computer series: used in conjunction with Joint-386 MS-DOS expansion software, the language can be used to expand the program space up as much as 4Gb; it sells for $2,000.