Xenix
Xenix is a standard developed by Microsoft descendant of the Unix Time Sharing System Seventh Edition. Microsoft does not use the name Unix, since only the product without rights to the name of AT & T was licensed. It was ported to the Apple Lisa, DEC VAX, and Intel 8086. One of the major OEM vendors included Acer, Tandy and SCO (which also took over the later development ).
History
Microsoft Xenix
Originally Microsoft Xenix was an Intel 8086 - porting AT & T Unix Version 7 with some BSD extensions. On August 25, 1980, the first version of Xenix OS was released. Soon after, Xenix was available in different versions of manufacturers Altos, Compaq, SCO and Tandy.
Xenix was supposed to be the default operating system for PCs, designed by Microsoft. However, nothing came of it, as it is a hard disk drive ( cost at the time about $ 10,000) and 256 KB of RAM required, but these were IBM PCs shipped with 32 to 64 Kbytes of RAM.
With the launch of Microsoft OS/2-Entwicklung lost interest in Xenix.
Version History
- First Unix from Microsoft under license from AT & T
- System III for 286 or 68000
- System V for 286
OEM versions
IBM
IBM marketed in the early days still PC / ix Interactive Unix operating system for the PC. From 1985, there was IBM PC Xenix 1.0 for the AT computer, which was still based on Xenix System III. The delivered later PC Xenix 2.0 was already a Unix System V.
Intel
For its own multi-bus systems System 86/380 and system 86/330A Intel Xenix was offered 3.4 and 3.5 later next iRMX 86.
Santa Cruz Operation
The company was founded in 1979 by Larry and Doug Michels was the largest supplier and forced further technical development. The 1983 SCO Xenix 5.0 presented based largely on AT & T Unix System V Release 0 ( SVR0 ). Microsoft acquired in 1989 over 20 % of the shares of SCO.
Siemens
The Sinix for the Intel platform based on Xenix.
Tandy
The Tandy 6000 systems were shipped with Tandy Xenix 5. The models used but later SCO Xenix 4000LX.
SCO Xenix
1983 was the first UNIX system for computers with Intel processors 8086 and 8088, which was called SCO Xenix System V, delivered. Santa Cruz Operation 1985 ported Xenix to the Intel 80286 (product name: SCO Xenix 286) and 1987 to 80386 under the name SCO Xenix 386th
The last version was SCO Xenix 386 Release 2.3.4 from 1991, which was offered only for computers with Intel 386 or higher - in a version for Micro Channel machines. In addition to the Bourne shell (sh ) and C shell (csh ) and the Korn shell (ksh ) was now included. The menu-driven Visual Shell ( vsh ) was intended for inexperienced users. To connect to other computers Micnet could be used over serial lines or UUCP. As text editors ed and vi were ready. The system administrator has the menu-driven interface sysadmsh for example, for user management or backup use. Multiscreen allowed the use of multiple virtual consoles.
Already in 1989, SCO Unix was presented as a successor product, which was backward compatible with Xenix and took over the device driver model of Xenix. The later building on SCO Unix System Products Open Desktop and Open Server (also the current OpenServer 6 ) also allow even the execution of old Xenix programs.
Version History
- SCO Xenix System III with support for IBM XT
- SCO Xenix System V development based on Unix System V
- SCO Xenix development 286 for Intel 80286
- Porting from AT & T Unix System V Release 2.2 on i386, so SCO Xenix System V/386 is the first 32 -bit operating system for x86 -based computer
- Based on AT & T Unix System V Release 2.3
- Improved hardware support, VGA
- Support for Streams
- Version of SCO Unix 3.2 binary COFF
- Improved driver
- As an update ( xnx137 )
- Update ( xnx296a ) - not an official release
- Latest Published Version
Other products
The SCO Xenix product line consisted of:
- SCO Xenix 286/386 - Operating system
- SCO Xenix System V Development System - development environment
- SCO Xenix System V Text Processing System - word processing
- SCO Xenix -NET - Microsoft Network for Xenix systems
- SCO TCP / IP - TCP / IP is available for Xenix 386
- SCO NFS - NFS is available for Xenix 386
- SCO Unipath SNA 3270 - Mainframe connectivity
- SCO MultiView - multitasking windowing environment
- SCO Portfolio Office Suite - application package consisting of Lyrix, Professional, Integra, Manager
- SCO FoxBASE - dBASE -compatible database system
- SCO Multiplan - spreadsheet
Microsoft shipped the development tools: