探讨了多媒体芯片上的RISC核的设计方法，研制了一种适合于多媒体应用的RISC核MRI，该芯片核可广泛有竽图象通信，音频编码和视频点播服务等领域，通过原型方法证明了设计的逻辑正确性。

Embedded microprocessor core is an important part of multimedia chip. In this paper, the design strategies for multimedia RISC core are expounded. MRI, a novel RISC core which is suitable for multimedia applications, is then presented with these strategies. MRI can be widely used in many multimedia areas such as image communication, audio encoding and video on demand service. The prototype implementation has verified its logic validity.