Apple Computer Inc’s A/UX implementation of Unix for the Macintosh II is at last available in the US, and will be out here in April, when the company will put a UK price on it. A/UX is currently being shipped either on a monochrome workstation, or colour system, or as a development system. A/UX on an Mac II with 2Mb RAM, 80Mb hard disk, memory management unit and a 12 monochrome monitor costs $8,597. An entry-level colour version with the same configuration as the mono version but with a 13 colour monitor is $9,346. A development system is also available for $8,399 which has 4Mb RAM, 80Mb hard disk, memory manager but no display. A/UX can be put up on a current Mac only by using an upgrade bundle which includes an 80Mb disk with A/UX, 4Mb of extra memory, and a memory manager at $4,879 on an internal disk drive, and $4,979 for an external one. The operating system A/UX is being pitched at value-added resellers, government accounts and the higher education market. Software developers are claiming a couple of days or less to port applications from the original Mac operating system to A/UX, and they are also able to give their customers the familiar Macintosh user interface into their Unix applications.