Mixed - mode Operating System for Real - time Performance

• Main Authors: Hasan M. M., Sultana S., Foo C.K.
• Format: Article
• Language: English
• Published: Universitas Gadjah Mada 2017-11-01
• Series: ASEAN Journal on Science and Technology for Development
• Online Access: http://www.ajstd.org/index.php/ajstd/article/view/178

The purpose of the mixed-mode system research is to handle devices with the accuracy of real-time systems and at the same time, having all the benefits and facilities of a matured Graphic User Interface(GUI)operating system which is typicallynon-real-time. This mixed-mode operating system comprising of a real-time portion and a non-real-time portion was studied and implemented to identify the feasibilities and performances in practical applications (in the context of scheduled the real-time events). In this research an i8751 microcontroller-based hardware was used to measure the performance of the system in real-time-only as well as non-real-time-only configurations. The real-time portion is an 486DX-40 IBM PC system running under DOS-based real-time kernel and the non-real-time portion is a Pentium IIIbased system running under Windows NT. It was found that mixed-mode systems performed as good as a typical real-time system and in fact, gave many additional benefits such as simplified/modular programming and load tolerance.