System for allowing multiple instructions to use the same logica

Details System for allowing multiple instructions to use the same logica System for allowing multiple instructions to use the same logica

1997-12-05

1999-10-26

An, Meng-Ai T.

Electrical computers and digital processing systems: processing

Processing architecture

Superscalar

712215, G06F 900

Patent

active

059745258

ABSTRACT:
A technique for increasing the number of physical segment registers by renaming logical segment registers into a larger register space. The remapping of the segment registers allows for instructions accessing the segment registers to be executed non-serially. The renaming of segment registers is achieved by assigning a shadow register to a segment register name. Thus, a pair of registers are physically available for a specified logical register in an instruction set to be renamed. Two bits, designated as the PSEG and SPEC bits, are used to control the remapping.

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