隨著半導體工業技術的快速發展，現今對於電子產品市場的需求越來越傾向於輕薄短小，於是軟硬體系統設計的開發也相對重要起來。軟硬體開發包括了軟硬體協同設計、模擬與驗證，它帶來的優點除了可以減少我們設計硬體上的問題，加速了硬體開發的時程，而我們在開發的同時，也能夠發現軟硬體之間的各種優缺點，避免在整體設計的最後階段又因為某些缺陷而重新做調整。
在設計過程中，當有些硬體設備無法隨手可得或是還在設計中的時後，我們可以透過軟體模擬的方式，將硬體的行為以軟體實現，此動作可稱為硬體虛擬化。虛擬化硬體不僅解決了沒有實體設備的困擾，也讓我們能夠在硬體設計的同時，根據需求開發軟體應用程式來搭配測試，不需要等到真實硬體設計到某個階段時才能夠進行驗證，不但減少了整體設計上的時程，對於整個系統設計來說，也能夠在設計前期獲得相關資訊，減少設計後期所出現的風險。
本文使用系統模擬機器QEMU作為研究目標，鑽研有關於QEMU是如何模擬不同的系統平台，並且同時開發軟體應用程式以及驅動程式來驗證我們在QEMU上所設計的虛擬硬體。建立一套基於QEMU系統虛擬機的軟硬體系統設計流程。

SUMMARY
Virtualization is a host platform, complete emulating multiple different target systems through a virtual machine, which allows a host platform can be installed and used in a variety or several operating systems, and allows them to run at the same time. This way you can more easily meet the needs of different users, so that multiple users can simultaneously share hardware resources, making use of the hardware resources of the opportunity to improve.

With the fast development of technology in the semiconductor industry, today's electronics market demand for more and more inclined to short, light, so the development of hardware and software system design is relatively important. Hardware and software development, including the hardware and software co-design, simulation and verification, Its advantages in addition to reducing our hardware design issues on the hardware accelerated development schedule, in our development, it can also find various advantages and disadvantages between hardware and software, and avoiding re-adjusted some of the drawbacks in the final stage of the overall design.

Index terms：system design;QEMU;virtual machine

[1] J.E.Smith and Ravi Nair : “Virtual Machines: Versatile Platforms for Systems and Processes”, Morgan Kaufmann, 2005.
[2] J.E.Smith and Ravi Nair : “An Overview of Virtual Machine Architectures”,Morgan Kaufmann, 2004.
[3] Erik R.Altman, David Kaeli and Yaron Sheffer, “Welcome to the Opportunities of Binary Translation,” Computer, Vol 33, No 3, March 2000, IEEE Computer Society Press, pp 40-45.
[4] C.Cifuentes and V .Malhotra, “Binary Translation: Static, Dynamic, Retargetable?,” Proceedings of International Conference on Software Maintenance. Monterey, CA, Nov 4-8 1996. IEEE-CS Press. pp 340-349.
[5] Li Jianhui, Ma Xiangning, and Zhu Chuanqi, “Dynamic binary Translation and Optimization”, Proceedings Journal of Computer Research and Development, pp.44(1):161~168, 2007.
[6] Anton Chernoff, Mark Herdeg, Ray Hookway, Chris Reeve, Norman Rubin, Tony Tye, S. Bharadwaj Yadavalli, and John Yates, “FX!32: a Profile-Directed Binary Translator”, IEEE Micro, vol. 18, no.2, 1998.
[7] VMware Server Virtual Machine Guide,“http://www.vmware.com/”
[8] Paul Barham, Boris Dragovic, Keir Fraser, Steven Hand, Tim Harris, Alex Ho, Rolf Neugebauery, Ian Pratt,Andrew Warfiled, “Xen and the Art of Virtualization”, SOSP'03, October 19-22, 2003, Bolton Landing, New York, USA.
[9] Hung-Yu Chang, Ching-Hsien Hsu: “On Customization of Virtual Cluster and Its Performance Analysis”. Journal of Information Technology and Applications, Vol.6, No.4, pp. 182-191 2012.
[10] Fabrice Bellard, “QEMU, a Fast and Portable Dynamic Translator”, USENIX Annual Technical Conference(2005), pp.41-46, 2005
[11] ARM Staff (2003-2007), “RealView Platform Baseboard for ARM926EJ-S User Guide.”
[12] ARM Staff(1999), “AMBATM Specification, 2000-2003 Rev 2.0”
[13] 張勝雲(2008),“多執行緒虛擬機的研究與設計”,國立成功大學電機工程學系碩士論文.
[14] 許維哲(2012),“虛擬系統層級之JEPG編碼器軟硬體協同設計”,國立成功大學電機工程學系碩士論文.
[15] Linux kernel source, https://www.kernel.org/
[16] ARM Architecture, http://www.arm.com/zh/