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:
Mar. 05, 1996
Filed:
Aug. 26, 1994
Fujitsu Limited, Kanagawa, JP;
Abstract
In a system for testing an instruction queue circuit connected to an external memory via a bus controller provided in a processor having a microprogram control unit, an operation unit connected to the microprogram control unit and connected, via an internal bus, to the instruction queue circuit, the instruction queue circuit-including a plurality of queue buffers, a writing unit writes internal bus information transferred via the internal bus into the instruction queue circuit in response to a first instruction generated by the microprogram control unit. The internal bus information is contained in the first instruction. A reading unit reads the internal bus information from the instruction queue circuit in response to a second instruction generated by the microprogram control unit. A gate circuit outputs the internal bus information to the internal bus in response to a third instruction generated by the microprogram control circuit. The internal bus information is used to test the instruction queue circuit.