Data processor.

摘要

A processor comprises a first ALU 40 and a second ALU 42 and 12 registers 44-0 to 44-11. It is a control section 46 that controls the first and second ALUs 40 and 42 and the 12 registers 44-0 to 44-11. Serial operation instructions input to the processor are executed only by the first ALU 40. At which time, the second ALU 42 stops. When a parallel operation instruction is input, it is executed by the first and second ALUs 40 and 42 in parallel. The first ALU 40 can access common registers 44-0 to 44-3 and dedicated registers 44-4 to 44-7 and the second ALU 42 can access the common registers 44-0 to 44-3 and dedicated registers 44-8 to 44-11. Therefore, the processor can switch parallel and serial operations, thereby facilitating manufacturing and design of the architecture and design of software given to the processor. <IMAGE>