Browse Prior Art Database

Logging of Power-On Self-Test Errors

IP.com Disclosure Number: IPCOM000102296D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 3 page(s) / 92K

Publishing Venue

IBM

Related People

Golding, VG: AUTHOR [+2]

Abstract

A maintenance/service aid which provides a method of recording errors which might occur during the Power-On Self-Test (POST) of a personal computer. It enables service engineers to make better use of error information at a time when the system would normally have erased the information. The user is spared the task of manually noting the error conditions and informing a service department later. Intermittent error information is also logged and protected from loss. (Image Omitted)

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Logging of Power-On Self-Test Errors

       A maintenance/service aid which provides a method of
recording errors which might occur during the Power-On Self-Test
(POST) of a personal computer.  It enables service engineers to make
better use of error information at a time when the system would
normally have erased the information. The user is spared the task of
manually noting the error conditions and informing a service
department later. Intermittent error information is also logged and
protected from loss.

                            (Image Omitted)

      After power is switched on to a personal computer, before the
machine is ready for use, various hardware tests are performed
automatically to ensure that at least a minimum configuration machine
is available to the user.  Any errors detected are reported to the
user as numeric codes which appear on the display.  The errors are
also held in a reserved area of dynamic RAM so that a POST Error
Processor program, which exists on the machine's Reference Diskette,
may be used to analyze the errors further.  This is done
automatically when the Reference Diskette is booted, if the program
detects that POST errors have occurred.  There is no method by which
errors encountered by the user can be communicated to the service
engineer, except by the user making a note of the codes displayed at
the time, particularly when machines are not serviced at the user's
location.  If the errors are intermittent, they may not be seen by
the engineer, which can result in 'no trouble found' situations, and
a machine being returned for repair several times before the problem
is resolved.
ERROR POSTING

      This disclosed solution provides a method whereby any POST
errors held in RAM are transferred to a reserve area of the system
hardfile or other non-volatile storage so that they become available
to the engineer for later analysis. Since such an error log would not
be useful without an indication of when the error occurred, a time
and date stamp is added to each error record.  Provision has also
been made for the service engineer to study the recorded error log by
means of an...