SYSTEM FOR DIAGNOSING GRAPHIC PROCESSING SYSTEM

PURPOSE:To easily perform interface between hardware, to guarantee the result data of an internal test, and to detect a defective part by enabling a test pattern and the result of the internal test to be checked from the outside. CONSTITUTION:An input part 5 and an output part 6 are connected to an...

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Bibliographic Details
Main Authors GOTO TOSHIYUKI, FUJII SHIGERU, MIMA TOSHIYA, YAMAUCHI MITSURU, AIDA KOICHI, TANABE TOMOAKI, OKAMOTO MASAYUKI, KATO KENJI, NAKAYAMA HIROSHI
Format Patent
LanguageEnglish
Published 22.09.1989
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:PURPOSE:To easily perform interface between hardware, to guarantee the result data of an internal test, and to detect a defective part by enabling a test pattern and the result of the internal test to be checked from the outside. CONSTITUTION:An input part 5 and an output part 6 are connected to an exter nal transmission line, and the processings of coordinate transformation or clip ping, etc., are performed by firmware incorporated in a ROM4. The ROM4 also stores the test pattern, and an MPU1 passes input information to the output part 6 after outputting the test pattern in the case of setting a diagnostic mode indication signal at a diagnostic mode after resetting a graphic processing unit. The test pattern is checked by remarking a checking bit at the outside. When no diagnostic mode is set, a processing is performed according to the instruction of the input information.
Bibliography:Application Number: JP19880066215