A parametrizable hybrid stack-register processor as soft intellectual property module

Hardware/software co-design usually encounters serious problems to guarantee strong real-time constraints while serving many interrupt routines. We present an enhanced register-based RISC processor, which is capable of launching every interrupt routine within two clock cycles. This processor is implemented as soft IP-Module and features a customizable instruction set, extensive parameterization, and a synthesis model with separate core and interfaces. An automatic derivation of adequate test vectors from the current parameter setting verifies the correct functionality.