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Real-Time Support on the Tablet PC Platform

태블릿 PC 환경의 실시간 처리 기능 지원

  • Received : 2013.10.07
  • Accepted : 2013.11.20
  • Published : 2013.11.28

Abstract

Generally in case of tablet PC's, the Windows 8 is used to support various functions or development convenience, however it cannot support real-time processing. In addition, existing commercial solutions and RTiK has a problem to support real-time processing due to impossibility of getting APIC timer count value which is used to generate timer interrupt separated from that of Windows. Thus, in this paper, we set the initial APIC count value using MSR_FSB_FREQ to support real-time processing on the Windows 8-based tablet PC's. Additionally, we deal with designing and implementing RTiK+ providing real-time processing to guarantee interrupt periods by controlling C-State which is used for low power techniques. To evaluate the performance of the proposed RTiK+, we measured the periods of generated real-time threads using RDTSC instructions which return the number of CPU clock ticks, and verified that RTiK+ operates correctly within the error ranges of 1ms.

Keywords

Tablet PC;Windows 8;Real-time Operating System

References

  1. http://www.intervalzero.com
  2. http://www.tenasys.com
  3. 송창인, 이승훈, 주민규, 이철훈, "멀티프로세서 윈도우즈 상에서 실시간 처리 기능 지원", 한국콘텐츠학회논문지, 제12권, 제6호, pp.68-77, 2012(6). https://doi.org/10.5392/JKCA.2012.12.06.068
  4. Intel, Intel 64 and IA-32 Architectures Software Developer's Manual Vol.1 : Basic Architecture, Intel, 2012.
  5. Intel, Intel 64 and IA-32 Architectures Software Developer's Manual Vol.3 : System Programming Guide, Intel, 2012.
  6. Intel, Intel 64 and IA-32 Architectures Software Developer's Manual Vol.2 : Instruction Set Reference, Intel, 2012.
  7. Intel, Intel 64 Architectures x2APIC Specification, Intel, 2008.
  8. http://www.acpi.info/spec.htm
  9. Intel, ADVANCED CONFIGURATION AND POWER INTERFACE SPECIFICATION Revision 5.0, Intel, 2011.
  10. D.A. Godse and A.P. Godse, Microprocessors, Technical Publications Pune, 2007.
  11. O. Bailey, Embedded systems : desktop integration, Wordware Publishing, 2005.
  12. Intel, MultiProcessor Specification Version 1.4, Intel, 1997.
  13. http://en.wikipedia.org/wiki/Front-side_bus
  14. 주민규, 이진욱, 김종진, 조한무, 박영수, 이철훈, "x86 기반의 윈도우즈 상에서 실시간 처리 기능 지원 방법", 한국차세대컴퓨팅학회논문지, 제11권, 제4호, pp.47-58, 2011(8).