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:
Nov. 29, 1988
Filed:
Jun. 16, 1986
Panafacom Limited, Yamato, JP;
Abstract
A condition code producing system for an arithmetic unit which is controlled by a micro program and operate on binary floating point data produces a condition code having a plurality of bits and describing an attribute of the binary floating point data. The condition code producing system comprises: a storing device for storing each bit of the condition code; a device for producing a plurality of detection signals from values of predetermined bits of the binary floating point data. This data is transferred to a bus within the arithmetic unit by a micro instruction which involves a data transfer, where the micro instruction is one of a plurality of micro instructions constituting the micro program. The micro instruction comprises a condition control field constituted by a plurality of bits having values depending on at least precision and data portions of the binary floating point data which is transferred. The system also includes a device for producing a new condition code from the plurality of detection signals and the condition code already stored in the storing device depending on a value of the condition control field and for setting the new condition code in the storing device.