Abstract
To develop an ASIP (Application Specific Instruction set Processor), development of HW (hardware) and development of SWDE (software development environments) are required. Separate develops of HW and SWDE in a short time are difficult. So HW/SW co-design system is necessary rapid develop of ASIPs. We have developed C-DASH (C-like Design Automation Shell), which is a HW/SW co-design system for designing processors based on ISA (Instruction Set Architecture). This paper describes the HW/SW co-design system C-DASH, along with a description of a java processor that directly executes Java byte code is given as an example.