Development methodology of ASIP based on Java byte code using HW/SW co-design system for processor design

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 codesign system is necessary rapid develop of ASIPs. We have developed C-DASH(c-like design automation shell), which is a HW/SW codesign system for designing processors based on ISA (instruction set architecture). We describe the HW/SW codesign system C-DASH, along with a description of a Java processor that directly executes Java byte code is given as an example.