Data processor with multiple register queues

摘要

A data processor includes a register group having registers of the number larger than the number of registers which can be designated by a register specifier field of an instruction. The register group consists of a plurality of register queues with respect to logical register numbers designated in the instruction, each register queue including a plurality of physical registers. In the data processor, a physical register number forming section is provided for converting the logical register number to a physical register number in the register queue corresponding to the logical register number, by using queue control information designated in the register specifier field and read/write information decided by the kind of the instruction and the position of the register specifier field in the instruction.