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:
May. 11, 1999
Filed:
Aug. 04, 1997
Applicant:
Inventor:
Hiroshi Yamamoto, Hyogo, JP;
Assignees:
Mitsubishi Electric Semiconductor Software Co., Ltd., Hyogo, JP;
Mitsubishi Denki Kabushiki, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
39518314 ; 39518321 ; 39518401 ;
Abstract
An emulation apparatus is connected to a host computer and a target system for verifying the operation of a program written for the target system. A microcomputer in the emulation apparatus executes the program written for the target system. In an undo mode, the execution of a program is halted at the end of the execution of each instruction. At that time, information on relative bus cycles is stored in a relative-bus cycle area of a memory. The contents of data and control registers in a target system are acquired and stored in data-register and control-register areas.