基于VHDL和PETRI网实现异步DMA控制系统

An Asynchronous DMA Control System Based on VHDL and PETRI Nets

设计开发一种基于VHDL语言的新型集成技术,实现用David cells(DCs)构成的异步电路系统(Speed independent,SI),它综合了逻辑集成技术和直接语法转换的优点,在这项技术中,颜色Pe-tri网技术和标签Petri网技术被用作数据通道(datapath)和控制的中间形式,SI电路可以通过直接映射技术从这些网(颜色Petri网和标签petri网)中直接获得。

A new integration technology based on VHDL language was proposed, by which a speed - independent （SI） asynchronous circuit system was constructed with David Ceils （DCs）. It combines the advantages of both logic integration technology and direct syntax translation technology, in which the technologies of colored Petri nets and labeled Petri nets are used as intermediate formats for data path and control, respectively; therefore, SI circuits can be obtained from these nets through direct mapping. It is proved that this technology is significant for the research and practice of asynchronous circuit design.