VHDL语言中间数据格式是VHDL设计环境的要求,用来作为VHDL开发环境中各设计工具的一个公共数据界面。本文给出的是一种基于属性表示的中间数据格式,是一种通用的VHDL中间数据表示方法,采用有向无环图(DAG)作为其抽象结构,它是一种推广的树结构。这种中间数据格式已经作为某一项工程开发的基础,经多种实例的验证,有其自身的可用性和可行性。 VHDL language intermediate data format is the VHDL design environment requirements, as a VHDL development environment for the design of a public data interface. This paper presents an intermediate data format based on attribute representation, which is a universal VHDL intermediate data representation method. It uses the Directed Acyclic Graph (DAG) as its abstract structure, which is a generalized tree structure. This intermediate data format has been used as the basis for the development of a project. It has its own usability and feasibility verified by various examples.