• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2007, Vol. 29 ›› Issue (6): 121-123.

• 论文 • 上一篇    下一篇

基于高地址约束和按需存储分配的UCard底层调度模块研究

曹计昌 周宇杰   

  • 出版日期:2007-06-01 发布日期:2010-06-03

  • Online:2007-06-01 Published:2010-06-03

摘要:

本文介绍了一种实现一卡多发的新型智能卡UCard及其体系结构。针对UCard现有固定存储空间分配存在资源浪费等不足,提出了一种按需存储空间分配方法,并且该方法通过对高位地址总线的约束实现了不同大小COS之间的物理隔离。然后在引入动态地址控制器的基础上,给出了基于按需存储空间分配的UCard底层调度模块的一种实现方式。最后利 用有限状态机对UCard底层调度模块装载、调度、卸载COS的过程进行了形式化描述。

关键词: UCard 底层调度模块 存储分配 有限状态机

Abstract:

UCard is a new concept of SmartcaM that can realize the functions of muhi-COS. This paper firstly introduces its architecture and basic characteristics. Then the method of space-sensitive storage allocation is proposed to solve the problem of resource waste in fixed storage allocation , and this method can also carry out the physical separation between COSes by restricting high addresses. After the introduction of a dynamic address controller,   of implementing the UCard scheduling module based on space-sensitive storage allocation is presented. Finally, the finite state module is used for forma  lly describing COS loading,COS scheduline and COS uninstalling.

Key words: (UCard, UCard scheduling module, storage allocation, finite state machine)