Browse Prior Art Database

Error Reporting for Potentially Used Functions of a Multi-Function Chip

IP.com Disclosure Number: IPCOM000106244D
Original Publication Date: 1993-Oct-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Christiansen, RA: AUTHOR [+2]

Abstract

Disclosed is a POST (Power On Self Test) program for an integrated circuit chip having several functions, one or more of which is not used in a current system configuration of hardware and software. However, such an unused function may have potential use in a future such configu ration. When the program finds an error condition in the chip, it displays an error code on the screen of the display unit. If the error is in a function currently being used, the boot process is halted; otherwise the boot process is continued.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 58% of the total text.

Error Reporting for Potentially Used Functions of a Multi-Function Chip

      Disclosed is a POST (Power On Self Test) program for an
integrated circuit chip having several functions, one or more of
which is not used in a current system configuration of hardware and
software.  However, such an unused function may have potential use in
a future such configu ration.  When the program finds an error
condition in the chip, it displays an error code on the screen of the
display unit.  If the error is in a function currently being used,
the boot process is halted; otherwise the boot process is continued.

     A code representing the particular system configuration used
with a multi-function chip is written to the POS (Programmable Option
Select) registers within the chip during the power on sequence
occurring when system power is turned on.  After this sequence is
completed, POST testing begins in block 1 of the figure for the
system and in block 2 for the multi-function circuit chip.  If no
errors are found in block 3, this testing continues until it is
completed, and after the initialization and startup procedures for
the chip are completed in block 4, the system continues testing other
circuits in block 5.  If an error is found in block 3, the error code
is posted to the display unit screen and recorded in the POST error
log in block 6.  Next a determination is made, in block 7, of whether
the function being tested is used in the present configura tion, by
compa...