Small footprint, scalable, high-performance RTOS for embedded microprocessor based systems. Zilog Z80-RIO Other Lisp-based Lisp Machines, Inc. (also known as LMI) used an operating system written in MIT's Lisp Machine Lisp. Symbolics Genera written in a systems dialect of the Lisp programming language called ZetaLisp and Symbolics Common Lisp. Genera was ported to a virtual machine for the DEC Alpha line of computers. Texas Instruments' Explorer Lisp machine workstations also had systems code written in Lisp Machine Lisp. Xerox 1100 series of Lisp machines used an operating system also written in Interlisp, and was also ported to a virtual machine called "Medley." For Elektronika BK ANDOS CSI-DOS MK-DOS Non-standard language-based Pilot operating system – written in the Mesa language and used on Xerox Star workstations. PERQ Operating System (POS) – written in PERQ Pascal. Other proprietary non-Unix-like Эльбрус-1 (Elbrus-1) and Эльбрус-2 – used for application, job control, system programming, implemented in uЭль-76 (AL-76). EOS – developed by ETA Systems for use in their ETA-10 line of supercomputers EMBOS – developed by Elxsi for use on their mini-supercomputers GCOS – a proprietary Operating System originally developed by General Electric MAI Basic Four – An OS implementing Business Basic from MAI Systems. Michigan Terminal System – Developed by a group of universities in the US, Canada, and the UK for use on the IBM System/360 Model 67, the System/370 series, and compatible mainframes MUSIC/SP – an operating system developed for the S/370, running normally under VM OS ES – an operating system for ES EVM PC-MOS/386 – DOS-like, but multiuser/multitasking Prolog-Dispatcher – used to control Soviet Buran space shuttle. SINTRAN III – an operating system used with Norsk Data computers. SkyOS – commercial desktop OS for PCs SODA – used by the Odra 1204 computers. THEOS TSX-32 – a 32-bit operating system for x86 platform. TX990/TXDS, DX10 and DNOS – proprietary operating systems for TI-990 minicomputers Other proprietary Unix-like and POSIX-compliant Aegis (Apollo Computer) Amiga Unix (Amiga ports of Unix System V release 3.2 with Amiga A2500UX and SVR4 with Amiga A3000UX. Started in 1990, last version was in 1992) Coherent (Unix-like OS from Mark Williams Co. for PC class computers) DC/OSx (DataCenter/OSx—an operating system developed by Pyramid Technology for its MIPS-based systems) DG/UX (Data General Corp) DNIX from DIAB DSPnano RTOS (POSIX nanokernel, DSP Optimized, Open Source) HeliOS developed and sold by Perihelion Software mainly for transputer-based systems Interactive Unix (a