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Wombat (operating System)
In computing, Wombat is an operating system, a high-performance virtualised Linux embedded operating system marketed by Open Kernel Labs, a spin-off of National ICT Australia's (now NICTA) Embedded, Real Time, Operating System Program. Wombat is a de-privileged ( paravirtualised) Linux running on an L4 and IGUANA system. It is optimized for embedded systems. See also *L4Linux L4Linux is a variant of the Linux kernel for operating systems, that is altered to the extent that it can run paravirtualized on an L4 microkernel, where the L4Linux kernel runs a service. L4Linux is not a fork but a variant and is binary com ... References External linksWombat: A portable user-mode Linux for embedded systems (presentation slides) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System
An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer from cellular phones and video game consoles to web servers and supercomputers. The dominant general-purpose personal computer operating system is Microsoft Windows with a market share of around 74.99%. macOS by Apple Inc. is in second place (14.84%), and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IGUANA Computing
Independent Group of Unix-Alikes and Networking Activists (IGUANA) are developers of the Wombat system. IGUANA is also an operating system (OS) personality that provides a set of services for memory management and process protection. Iguana is designed as a base for the provision of operating system services for embedded systems. Among others, it provides the underlying OS for Wombat, a version of paravirtualised Linux designed to provide legacy support for embedded systems. Wombat works together with PistachioKengeanIguana It is also used, along with Pistachio, to create Qualcomm's REX OS Rex may refer to: * Rex (title) (Latin: king, ruler, monarch), a royal title ** King of Rome (Latin: Rex Romae), chief magistrate of the Roman Kingdom People * Rex (given name), for people with the given name * Rex (surname), for people with t ... designed for cell phones. External linksIguana L4 Development using Iguana [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embedded Operating Systems
An embedded operating system is an operating system for embedded computer systems. Embedded operating systems are computer systems designed to increase functionality and reliability for achieving a specific task. Resource efficiency comes at the cost of losing some functionality or granularity that larger computer operating systems provide, including functions that may not be used by the specialized applications run. Depending on the method used for multitasking, this type of OS is frequently considered a real-time operating system or ''RTOS''. Embedded systems are mostly used as Real-time operating systems. All embedded systems contain a processor and software. There must be a place for embedded software to store the executable code and temporary storage for run-time data manipulations. These take the form of ROM and RAM, respectively. All embedded systems must also contain some form of inputs and outputs to function. Within the exception of these few common features, the rest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Real-time Operating Systems
A real-time operating system (RTOS) is an operating system (OS) for real-time applications that processes data and events that have critically defined time constraints. An RTOS is distinct from a time-sharing operating system, such as Unix, which manages the sharing of system resources with a scheduler, data buffers, or fixed task prioritization in a multitasking or multiprogramming environment. Processing time requirements need to be fully understood and bound rather than just kept as a minimum. All processing must occur within the defined constraints. Real-time operating systems are event-driven and preemptive, meaning the OS is capable of monitoring the relevant priority of competing tasks, and make changes to the task priority. Event-driven systems switch between tasks based on their priorities, while time-sharing systems switch the task based on clock interrupts. Characteristics A key characteristic of an RTOS is the level of its consistency concerning the amount of time it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
L4Linux
L4Linux is a variant of the Linux kernel for operating systems, that is altered to the extent that it can run paravirtualized on an L4 microkernel, where the L4Linux kernel runs a service. L4Linux is not a fork but a variant and is binary compatible with the Linux x86 kernel, thus it can replace the Linux kernel of any Linux distribution. L4Linux is being developed by the ''Dresden Real-Time Operating System Project'' (DROPS) to allow real-time and time-sharing programs to run on a computer in parallel at the same time. L4Linux also allows setting up a virtualized environment vaguely similar to Xen or Kernel-based Virtual Machine (KVM), but a few significant differences exist between the intent of Xen and L4Linux. L4Android L4Android is a fork of L4Linux which encompasses the modifications to the main-line Linux kernel for Android. It is a joint project of the operating systems group of the Dresden University of Technology and the chair for Security in Telecommunication ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embedded System
An embedded system is a computer system—a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. It is ''embedded'' as part of a complete device often including electrical or electronic hardware and mechanical parts. Because an embedded system typically controls physical operations of the machine that it is embedded within, it often has real-time computing constraints. Embedded systems control many devices in common use today. , it was estimated that ninety-eight percent of all microprocessors manufactured were used in embedded systems. Modern embedded systems are often based on microcontrollers (i.e. microprocessors with integrated memory and peripheral interfaces), but ordinary microprocessors (using external chips for memory and peripheral interface circuits) are also common, especially in more complex systems. In either case, the processor(s) used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Kernel Labs
Open Kernel Labs (OK Labs) is a privately owned company that develops microkernel-based hypervisors and operating systems for embedded systems. The company was founded in 2006 by Steve Subar and Gernot Heiser as a spinout from NICTA. It was headquartered in Chicago, while research and development was located in Sydney, Australia. The company was acquired by General Dynamics in September 2012. Products OKL4 Microvisor The OKL4 Microvisor is an open-source software system software platform for embedded systems that can be used as a hypervisor, and as a simple real-time operating system with memory protection. It is a variant of the L4 microkernel. OKL4 is a Type I hypervisor and runs on single- and multi-core processors based on ARM, MIPS, and x86 processors. OKL4 has been deployed on over 2 billion mobile phones, both as a baseband processor operating system and for hosting guest operating systems. Most notable and visible is the company's design win at Motorola for the Evo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embedded Operating System
An embedded operating system is an operating system for embedded computer systems. Embedded operating systems are computer systems designed to increase functionality and reliability for achieving a specific task. Resource efficiency comes at the cost of losing some functionality or granularity that larger computer operating systems provide, including functions that may not be used by the specialized applications run. Depending on the method used for multitasking, this type of OS is frequently considered a real-time operating system or ''RTOS''. Embedded systems are mostly used as Real-time operating systems. All embedded systems contain a processor and software. There must be a place for embedded software to store the executable code and temporary storage for run-time data manipulations. These take the form of ROM and RAM, respectively. All embedded systems must also contain some form of inputs and outputs to function. Within the exception of these few common features, the rest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtualization
In computing, virtualization or virtualisation (sometimes abbreviated v12n, a numeronym) is the act of creating a virtual (rather than actual) version of something at the same abstraction level, including virtual computer hardware platforms, storage devices, and computer network resources. Virtualization began in the 1960s, as a method of logically dividing the system resources provided by mainframe computers between different applications. An early and successful example is IBM CP/CMS. The control program CP provided each user with a simulated stand-alone System/360 computer. Since then, the meaning of the term has broadened. Hardware virtualization ''Hardware virtualization'' or ''platform virtualization'' refers to the creation of a virtual machine that acts like a real computer with an operating system. Software executed on these virtual machines is separated from the underlying hardware resources. For example, a computer that is running Arch Linux may host a virtual machi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
:Pistachio
The pistachio (, ''Pistacia vera''), a member of the cashew family, is a small tree originating from Central Asia to Afghanistan. The tree produces seeds that are widely consumed as food. ''Pistacia vera'' is often confused with other species in the genus ''Pistacia'' that are also known as pistachio. These other species can be distinguished by their geographic distributions (in the wild) and their seeds which are much smaller and have a soft shell. Etymology Pistachio is from late Middle English ''pistace'', from Old French, superseded in the 16th century by forms from Italian ''pistacchio'', via Latin from Greek ''pistákion'', and from Middle Persian ''pistakē''. History The pistachio tree is native to regions of Central Asia, including present-day Iran and Afghanistan. Archaeology shows that pistachio seeds were a common food as early as 6750 BC. So far, the earliest evidence of pistachio consumption goes back to the Bronze Age Central Asia and comes from Djarkutan, mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NICTA
NICTA (formerly named National ICT Australia Ltd) was Australia's Information and Communications Technology (ICT) Research Centre of Excellence and is now known as CSIRO's Data61. The term "Centre of Excellence" is common marketing terminology used by some Australian government organisations for titles of science research groups. NICTA's role was to pursue potentially economically significant ICT related research for the Australian economy. NICTA was structured around groups focused primarily on pure research and implementing those ideas within business teams. When its funding ceased, NICTA merged with ''Commonwealth Scientific and Industrial Research Organisation'' (CSIRO) to form a new entity named CSIRO's Data61 on 28 August 2015. History In 2002, NICTA won a competitive selection process to be established as Australia's national centre of excellence in information and communications technology (ICT) research, under an Australian Government policy initiative to promote scie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linux
Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, which includes the kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name "GNU/Linux" to emphasize the importance of GNU software, causing some controversy. Popular Linux distributions include Debian, Fedora Linux, and Ubuntu, the latter of which itself consists of many different distributions and modifications, including Lubuntu and Xubuntu. Commercial distributions include Red Hat Enterprise Linux and SUSE Linux Enterprise. Desktop Linux distributions include a windowing system such as X11 or Wayland, and a desktop environment such as GNOME or KDE Plasma. Distributions intended for ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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