an infusion of Xenix device drivers and utilities plus most of the SVR4 features SCO Open Desktop, the first 32-bit graphical user interface for UNIX Systems running on Intel processor-based computers. Based on SCO Unix SCO OpenServer 5, AT&T UNIX System V Release 3 based SCO OpenServer 6, SVR5 (UnixWare 7) based kernel with SCO OpenServer 5 application and binary compatibility, system administration, and user environments UnixWare UnixWare 2.x, based on AT&T System V Release 4.2MP UnixWare 7, UnixWare 2 kernel plus parts of 3.2v5 (UnixWare 2 + OpenServer 5 = UnixWare 7). Referred to by SCO as SVR5 Silicon Laboratories (formerly Micrium Inc.) Micrium OS - customized μC/OS-III for Silicon Laboratories's SoC products Sinclair Research Sinclair BASIC was used in the 8-bit home computers from Sinclair Research and Timex Sinclair. It was included in the ROM, and the computers booted to the Basic interpreter. Various versions exist, with the latter ones supporting disk drive operations. Sony PlayStation 3 system software PlayStation 4 system software PlayStation 5 system software SYSGO PikeOS – a certified real time operating system for safety and security critical embedded systems Tandem Computers, Compaq, Hewlett-Packard, Hewlett Packard Enterprise NonStop OS – runs on HPE's NonStop line of servers Tandy Corporation TRSDOS – A floppy-disk-oriented OS supplied by Tandy/Radio Shack for their TRS-80 Z80-based line of personal computers. Eventually renamed as LS-DOS or LDOS. Color BASIC – A ROM-based OS created by Microsoft for the TRS-80 Color Computer. NewDos/80 – A third-party OS for Tandy's TRS-80 personal computers. DeskMate – Operating system created by Tandy Corporation and introduced with the Tandy 1000 computer. TCSC (later NCSC) Edos – enhanced version of IBM's DOS/360 (and later DOS/VS and DOS/VSE) operating system for System/360 and System/370 IBM mainframes Texas Instruments TI-RTOS Kernel – Real-time operating system for TI's embedded devices. TRON Project TRON – open real-time operating system kernel T-Kernel UNIVAC, Unisys EXEC I EXEC II EXEC 8/OS 1100/OS 2200 VS/9, successor to RCA TSOS Wang Laboratories WPS Wang Word Processing System. Micro-code based system. OIS Wang Office Information System. Successor to the WPS. Combined the WPS and VP/MVP systems. Weston Embedded Solutions μC/OS-II – a small pre-emptive priority based multi-tasking kernel μC/OS-III – a small pre-emptive priority based multi-tasking kernel, with unlimited number of tasks and priorities, and round-robin scheduling Cesium RTOS - commercial continuation of Micrium's μC/OS-III forked from the open-sources release Wind River Systems VxWorks –