| 摘要 |
<p>PURPOSE:To reduce defective point elucidating time in a graphic display device by performing an error log analysis so that the reliability of the device can be improved by providing a command trace area and address table. CONSTITUTION:A command trace area 9 for preserving a fixed number of already executed commands and address table 10 for registering variables to be preserved at every command are provided and, when an error, such as hardware error, etc., occurs in this graphic display device, an error Jogging process is performed for preserving the error in an error Jogging area 11 by logging the error and several pieces of commands executed immediately before the error occurs after fetching the commands from the area 9 and reading out the current states of necessary variables from a memory at every command on the basis of the table 10.</p> |
