The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 1980
Filed:
Sep. 11, 1978
Gerhard Prey, Munich, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method and apparatus for controlling the instruction sequence in a stored program data processing system is described. An interrogation instruction causes the execution of a conditional check. As a result of this conditional check, one or the other of two bistable circuits is activated in dependence on the presence or absence of the prespecified condition. In an alternative embodiment, the apparatus can be modified to permit activation of both bistable circuits. One of the bistable circuits, when set, prevents execution of the next instruction in the instruction sequence. The setting of the other bistable circuit prevents execution of the next jump instruction occurring in the instruction sequence. A control signal in the interrogation instruction indicates which of the bistable circuits is to be set.