Multitask processing system and picture processing system

PROBLEM TO BE SOLVED: To provide a multitask processing system. SOLUTION: A multitask processing system has a data bus D and command bus C. In order to receive or give processed data through the data bus D, each of a plurality of operators 10 is provided for executing the processing decided by an instruction, generates a command request for receiving an instruction from the command bus C and, generates a transfer request in response to the positive acknowledge to the command request. A memory controller 12 arbitrates transfer requests and manages the data transfer on the data bus between an operator and memory 14. A seguencer 16 arbitrates command requests, decides the instruction to be given to the operator, and manages instruction transfer made through the command bus C. COPYRIGHT: (C)1996,JPO