8170 N/B MAINTENANCE
7.Maintenance Diagnostic
7.1Introduction
Every time the computer is turned on ,the system BIOS runs a series of internal checks on the hardware. This
If an error is detected during these tests, you will see an error message displayed on the screen. If the error occurs before the display, then the screen cannot display the error message. Error codes or system beeps are used to identify a post error that occurs when the screen is not available.
The value for the diagnostic post (378H) is written at the beginning of the test. Therefore , if the test fail, the user can determine where the problem occurs by reading the last value written to post 378H by the PIO debug board plug at PIO port.
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