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Home : Computers : Software : Operating Systems : Realtime : Unix
Unix
These are realtime operating systems (RTOSs) that range from full Unix, and total POSIX compliance, to being less Unix-like, but which are still very POSIX compliant.
They are categorized as realtime "Unix-type" OSs instead of realtime "Unix" because some of these OSs are not full Unix, but are extremely, or very, or mostly Unix-like; in other words, some are more Unix-like than others. There is a virtual continuum of OSs from full Unix all the way to those that are merely somewhat POSIX compliant. This category holds those that are most Unix-like and POSIX compliant.
They are categorized as realtime "Unix-type" OSs instead of realtime "Unix" because some of these OSs are not full Unix, but are extremely, or very, or mostly Unix-like; in other words, some are more Unix-like than others. There is a virtual continuum of OSs from full Unix all the way to those that are merely somewhat POSIX compliant. This category holds those that are most Unix-like and POSIX compliant.
Sites in Unix
USIX
Provides source and binary compatibility with SVR4/386, with: guaranteed response time to interrupts in real-time uses, multiprocessor kernel architecture, better resource utilization, more robust file system, able to dynamically extend kernel with no re-linking.
Concurrent Computer Corp.
Makes PowerMAX OS: fully preemptive, multi-threaded, Unix-based RTOS. Leading provider of concurrent real-time multiprocessor OSs, high-performance real-time computer systems, solutions, software for business and government. Focus: strategic business areas including: simulation; data acquisition; instrumentation and process control; interactive real-time (includes wagering, gaming, video-on-demand); vibration control.
Maruti
Goal: create an environment for developing and deploying critical applications with hard real-time constraints in a reactive environment. Such applications must be able to execute on a platform of distributed and heterogeneous resources, and operate continuously in the presence of faults.
RTMX, Inc.
Makes RTMX O/S: IEEE POSIX realtime extensions to OpenBSD, with vendor specific ports for embedded, dedicated systems, application specific Internet/intranet servers. Many fine features. North Carolina, USA. |
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