JHDL-an HDL for reconfigurable systems

P. Bellows, B. Hutchings
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引用次数: 309

Abstract

JHDL is a design tool for reconfigurable systems that allows designers to express circuit organizations that dynamically change over time in a natural way, using only standard programming abstractions found in object-oriented languages. JHDL manages FPGA resources in a manner that is similar to the way object-oriented languages manage memory: circuits are treated as distinct objects and a circuit is configured onto a configurable computing machine (CCM) by invoking its constructor effectively "constructing " an instance of the circuit onto the reconfigurable platform just as object instances are allocated in memory with conventional object-oriented languages. This approach of using object constructors/destructors to control the circuit lifetime on a CCM is a powerful technique that naturally leads to a dual simulation/execution environment where a designer can easily switch between either software simulation or hardware execution on a CCM with a single application description. Moreover JHDL supports dual hardware/software execution; parts of the application described using JHDL circuit constructs can be executed on the CCM while the remainder of the application the-GUI for example-can run on the CCM host. Based on an existing programming language (Java), JHDL requires no language extensions and can be used with any standard Java 1.1 distribution.
用于可重构系统的一种HDL
JHDL是一种用于可重构系统的设计工具,它允许设计人员仅使用面向对象语言中的标准编程抽象,以自然的方式表达随时间动态变化的电路组织。JHDL以一种类似于面向对象语言管理内存的方式管理FPGA资源:电路被视为不同的对象,通过调用其构造函数有效地将电路的实例“构造”到可重构平台上,将电路配置到可配置计算机器(CCM)上,就像使用传统的面向对象语言在内存中分配对象实例一样。这种使用对象构造函数/析构函数来控制CCM上的电路寿命的方法是一种强大的技术,它自然会导致双重模拟/执行环境,在这种环境中,设计人员可以轻松地在具有单个应用程序描述的CCM上的软件模拟或硬件执行之间切换。此外,JHDL支持双硬件/软件执行;使用JHDL电路结构描述的应用程序部分可以在CCM上执行,而应用程序的其余部分(例如gui)可以在CCM主机上运行。基于现有的编程语言(Java), JHDL不需要语言扩展,可以与任何标准Java 1.1发行版一起使用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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