Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Software-Controlled Dynamically Swappable Hardware Design in Partially Reconfigurable Systems | Hindawi Publishing Corporation EURASIP Journal on Embedded Systems Volume 2008 Article ID 231940 11 pages doi 2008 231940 Research Article Software-Controlled Dynamically Swappable Hardware Design in Partially Reconfigurable Systems Chun-Hsian Huang and Pao-Ann Hsiung Department of Computer Science and Information Engineering National Chung Cheng University Chiayi 621 Taiwan Correspondence should be addressed to Pao-Ann Hsiung hpa@ Received 24 May 2007 Accepted 15 October 2007 Recommended by Toomas P. Plaks We propose two basic wrapper designs and an enhanced wrapper design for arbitrary digital hardware circuit designs such that they can be enhanced with the capability for dynamic swapping controlled by software. A hardware design with either of the proposed wrappers can thus be swapped out of the partially reconfigurable logic at runtime in some intermediate state of computation and then swapped in when required to continue from that state. The context data is saved to a buffer in the wrapper at interruptible states and then the wrapper takes care of saving the hardware context to communication memory through a peripheral bus and later restoring the hardware context after the design is swapped in. The overheads of the hardware standardization and the wrapper in terms of additional reconfigurable logic resources and the time for context switching are small and generally acceptable. With the capability for dynamic swapping high priority hardware tasks can interrupt low-priority tasks in real-time embedded systems so that the utilization of hardware space per unit time is increased. Copyright 2008 . Huang and . Hsiung. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION With rapid technology progress FPGAs are getting more and more powerful and flexible in contrast .
