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EP0211487A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Conditional operations in computers

Assignee: HP Inc
•
Filing: 1986-06-12
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Granted: —
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Expires: 2006-06-12
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Abstract

Abstract A method is provided for conditional control over the execution of instructions in a digital computer without introducing residual state.

Inventors

  • 👤 Allen J. Baum
  • 👤 Terrence C. Miller
  • 👤 Michael J. Mahon

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 02:03
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/30003; G06F9/30072; G06F9/38; G06F9/3836; G06F9/3842

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 100 words
A method for conditional control over the execution in a program of a first instruction, having a condition field, and a second instruction, being the time sequential instruction of the first instruction, in a digital computer without introducing residual state, the Method comprising: performing the operation specified by the first instruction; generating a condition code from the performed operation; and performing the operation specified by the second instruction or an exception resulting from an attempt to perform the second instruction, unless the condition field of the first instruction matches the condition codes generated by the operation of the first instruction.
Claim 2
Independent Claim 100 words
A method for conditional control over the execution in a program of a first instruction, having a condition field, and a second instruction, being the time sequential instruction of the first instruction, in a digital computer without introducing residual state, the Method comprising: performing the operation specified by the first instruction; generating a condition code from the performed operation; and performing the operation specified by the second instruction or an exception resulting from an attempt to perform the second instruction, unless the condition field of the first instruction matches the condition codes generated by the operation of the first instruction.
Claim 3
Dependent Claim 15 words
A computer when programmed to operate according to the method as claimed in claim 1.

References Cited (Backward Citations)

US3577190A Cited
US3766527A Cited
GB1480209A Cited
GB2148562A Cited

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