公开(公告)号：DE69028138T2

公开(公告)日：1997-01-23

申请号：DE69028138

申请日：1990-05-21

Applicant: TANDEM COMPUTERS INC

Inventor： JARDINE ROBERT L ,  LYNCH SHANNON J ,  MANELA PHILIP R ,  HORST ROBERT W

IPC: G06F9/38

Abstract: A mechanism for handling exceptions in a processor system that issues a family of more than one instruction during a single clock that utilizes the exception handling procedures developed for single instructions. The mechanism detects an exception associated with one of the instructions in the family, inhibits the data writes for the instructions in the family, flushes the pipeline, and reissues the instruction singly. The exception handling procedure for the single instruction may then be utilized.

公开(公告)号：DE69022144D1

公开(公告)日：1995-10-12

申请号：DE69022144

申请日：1990-07-02

Applicant: TANDEM COMPUTERS INC

Inventor： HORST ROBERT W ,  JARDINE ROBERT L

IPC: G06F7/499 ,  G06F7/00 ,  G06F7/53 ,  G06F11/14 ,  G06F11/16

Abstract: In a data processing system, a multiplication operation is immediately followed by a redundant multiplication operation, using the same, albeit altered, operands, to check the initial result. The initial result is immediately available for used, but the check is not performed until some time later. The original operands are altered for the redundant multiplication operation by shifting one operand 1 bit, and swapping them before multiplication.

公开(公告)号：AU5515490A

公开(公告)日：1990-11-29

申请号：AU5515490

申请日：1990-05-17

Applicant: TANDEM COMPUTERS INC

Inventor： JARDINE ROBERT L ,  LYNCH SHANNON J ,  MANELA PHILIP R ,  HORST ROBERT W

IPC: G06F9/38

Abstract: A mechanism for handling exceptions in a processor system that issues a family of more than one instruction during a single clock that utilizes the exception handling procedures developed for single instructions. The mechanism detects an exception associated with one of the instructions in the family, inhibits the data writes for the instructions in the family, flushes the pipeline, and reissues the instruction singly. The exception handling procedure for the single instruction may then be utilized.

公开(公告)号：CA2016254A1

公开(公告)日：1990-11-23

申请号：CA2016254

申请日：1990-05-08

Applicant: TANDEM COMPUTERS INC

Inventor： JARDINE ROBERT L ,  LYNCH SHANNON J ,  MANELA PHILIP R ,  HORST ROBERT W

IPC: G06F9/38 ,  G06F9/22

Abstract: PAIRED INSTRUCTION PROCESSOR BRANCH RECOVERY MECHANISM A mechanism for recovering from a branch misprediction in a processor system that issues a family of more than one instruction during a single clock that determines the location of the branch instruction in the family, completes the data writes for all instructions in the family preceding the branch instruction, inhibits the data writes for all instructions in the family following the branch instruction, and fetches the correct next instruction into the pipeline. T18/10577-212