Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Logging and Retrieving of Error Codes During Power-On Self Test Using BIOS Function Calls

IP.com Disclosure Number: IPCOM000034224D
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Bennett, JB: AUTHOR [+3]

Abstract

This article describes a technique for use in a processor system to determine which errors occurred during power-on self test (POST). In some processor systems at run time, programs are unable to determine which errors occurred during POST. In the technique disclosed herein, during POST when an error is detected, it is logged in the extended basic input output system (BIOS) data area. The processor system architecture has eleven bytes allocated in the extended BIOS data area to hold up to five POST error codes and a counter. A BIOS interrupt function is encoded into the system ROM as the interface to store and retrieve the error codes. The BIOS interface is illustrated in the drawing which is a flow chart for the logging of error codes during POST using BIOS function calls.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Logging and Retrieving of Error Codes During Power-On Self Test Using BIOS Function Calls

This article describes a technique for use in a processor system to determine which errors occurred during power-on self test (POST). In some processor systems at run time, programs are unable to determine which errors occurred during POST. In the technique disclosed herein, during POST when an error is detected, it is logged in the extended basic input output system (BIOS) data area. The processor system architecture has eleven bytes allocated in the extended BIOS data area to hold up to five POST error codes and a counter. A BIOS interrupt function is encoded into the system ROM as the interface to store and retrieve the error codes. The BIOS interface is illustrated in the drawing which is a flow chart for the logging of error codes during POST using BIOS function calls. The function for retrieving error codes is implemented in the BIOS but is not used during the POST process.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]