Walter Thomas Esling, 645908 Terravista Dr, Austin, TX 78735

5768556, Jun 16, 1998

Dec 22, 1995

8/577994

Miles Gaylord Canada - Colchester VT
Walter Esling - Colorado Springs CO
Jay Gerald Heaslip - Williston VT
Stephen William Mahin - Underhill VT
Pamela A. Wilcox - Burlington VT
James Hesson - Austin TX

International Business Machines Corporation - Armonk NY

G06F 900
G06F 928

395392

An apparatus for use with a computer system for identifying dependencies within a register, which dependencies are established by a succession of instructions for the computer system. The register includes a plurality of cells which may be in a hierarchical arrangement of register storage sets. In its preferred embodiment, the apparatus comprises a storage means for storing a bit map, which bit map is configured to provide bit map identifications identifying designated register storage sets. The bit map represents the hierarchical arrangement. The apparatus further comprises a logic means for logically treating information, which logic means is coupled with the storage means and with the computer system. The logic means receives a first bit map identification from a first instruction (the first bit map identification identifies a first register storage set), and receives a second bit map identification from a second instruction (the second bit map identification identifies a second register storage set. The second instruction is subsequent in the succession to the first instruction.