Amdahl Corp is finally officially making its UTS native implementation of Unix System V available on all System 370- and System 390-compatible mainframes, effectively all mainframes built by IBM Corp, Hitachi Ltd – and sold by Comparex Informationssysteme AG as well as Hitachi Data Systems – and Fujitsu Ltd. The implementation, which has always run on 370-type machines although Amdahl was reluctant to support it on other machines than its own. UTS includes native 3270 support and channel attached SNA and pricing is usage-based – charges are tied to the portion of the mainframe dedicated to the UTS system and any optional features installed. Amdahl sees a market for it from mainframe users that want to migrate to open systems over time.