Embedded systems with application-specific instruction set processors are often used in nowadays digital devices. The processors are highly optimized for a given task allowing better features of the devices. Therefore, one needs to have good tools helping with designing of these processors. Since the processor design and optimization is an iterative process, the tools should be generated in automatic way from a processor description. In this paper, the Lissom project is presented. It provides a whole integrated desktop environment for processors and multiprocessors systems design. The processors are described using architecture description language which was developed in the project.
