Instruction execution control system

Abstract

Abstract The instruction execution control system of an information processing device having a pipeline instruction execution control portion is provided for sequentially executing an instruction interval between a completion of execution of a certain instruction and a read out of a next instruction. This system comprises program status word holding means (2) for holding program status word including indicating information concerning whether or not an instruction interval is to be sequentially executed and control information indicating execution status of program, and instruction execution sequencing indication means (4) responsive to the indicating information of the program status word held in the program status word holding means (2) for indicating the instruction execution control portion whether or not the instructions in the interval are to be sequentially executed. In this system an instruction in which program exception occurs can be easily identified, and a sequential execution of instruction interval between a completion of execution of a certain instruction and a readout of a next instruction only within a desired portion of a specific program can be easily performed.

Inventors

• 👤 Kazuhisa Inoue

Bibliographic Details