TEST METHOD AND TEST DEVICE FOR FRAME MEMORY

摘要

PURPOSE:To provide a test method and a test device for a frame memory which can automatically execute a test of a frame memory composing a frame memory of double buffer system in the quite same conditions as the actual operations without depending on visual confirmation or the like. CONSTITUTION:When a frame memory 101 of one of a double buffer system is tested, the other frame memory 102 is used as a test buffer, display data outputted from a SAM 107 of a VRAM 103 of n pieces which composes the frame memory 101 in the same conditions as the actual operation is inputted to a SAM 108 of a VRAM 104 of n pieces which composes the frame memory 102, contents of the frame memory 101 is compared with contents of the frame memory 102, and information about malfunction parts of the VRAM 103 of n pieces which composes the frame memory 101 is collected.