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Functional Testing Option Cards Without Powering-Off Host

IP.com Disclosure Number: IPCOM000100037D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 3 page(s) / 103K

Publishing Venue

IBM

Related People

Gourlay, HG: AUTHOR [+4]

Abstract

This article describes two schemes. The first is a procedure which can be used to plug and remove adapter cards into and from a PS/2 system which remains powered on. The second describes a method of functional testing PC option cards in a manufacturing environment without powering off the PC.

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

Functional Testing Option Cards Without Powering-Off Host

       This article describes two schemes.  The first is a
procedure which can be used to plug and remove adapter cards into and
from a PS/2 system which remains powered on. The second describes a
method of functional testing PC option cards in a manufacturing
environment without powering off the PC.

      Procedure for Hot Plugging Adapter Cards into the PS/2* MICRO
CHANNEL*

      Functional testing of adapter cards can best be accomplished
when the adapter card is tested using its intended target system.
When testing adapter cards in a manufacturing environment, any
process which can reduce the adapter test time will result in a cost
saving.  One method of reducing the test time is to insert and
extract the adapter card without powering the target system on or
off. This would save the time normally taken for target system POST
and possibly the time taken to load adapter test code into the target
system memory.

      This procedure can be used for PS/2 adapter cards.  The
procedure has two prerequisites.
1.   The adapter card power is not derived from the PS/2 target
system.
2.   The test system must be capable of driving the CHRESET line, on
the adapter card, externally, and this line must NOT be connected to
the PS/2 target system.

      Procedure:
1.   The PS/2 target system should be configured with the adapter
card to be tested missing from the system.
2.   Power up the PS/2 target system. Note that both operations 1 and
2 should be carried out prior to plugging the adapter card into the
PS/2 target system
3.   Power up the adapter card and toggle on/off the adapter card
CHRESET line.  CHRESET line must be held on for the minimum time
specified in the PS/2 technical reference manual.
4.   Plug the adapter card into the PS/2 target system.
5.   Configure and then enable the adapter card by writing directly
to the adapter card, as described in the PS/2 technical reference
manual.  Data for the POS registers can be found in the adapter
description file for the card (.ADF).
6.   Test the card using the manufacturing test code.
7.   Disable the card by setting bit 0 of POS register 102 to a zero,
as described in the PS/2 technical reference manual.
8.   Remove the adapter card from the PS/2 target system.
9.   Remove power from the adapter card.
10.  Return to step 3 to test the next card.

      The above procedure has been used to successfully test a wide
range of PS/2 adapter cards.

      The method provides a readily available time saving/low co...