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1996-12-28
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OSINTOID - TOSHIBA CD-ROM MODELS NOT RECOGNIZED BY OS/2
08/29/96
=======================================================================
Toshiba CD-ROM Models Not Recognized by OS/2
=======================================================================
Please Read Entire Document for Full Explanation of Procedures
--------------------------------------------------------------
DESCRIPTION
Some models and revisions of the Toshiba CD-ROM drive fail to be
recognized under OS/2 Warp Full Pak or OS/2 Warp Connect on the primary
or secondary IDE connector. There are several variations of Toshiba
CD-ROM drive which give different results:
CD-ROM Drive Version ROM Version Status
XM5302B 101 KA50419 Works
XM5302B 004 KA50419 Works
XM5302B 201 KD50728 Fails
XM5402B 000 QA51226 Fails
XM5402B 000 QA51031 Fails
An example of a failing CD-ROM scenario is as follows:
A Toshiba XM5302B CD-ROM is added to a P5-90 system running OS/2
version 2.11, Warp FullPack, or Warp Connect. The system locks up on
startup, before the BIOS message appears on screen.
If the CD-ROM is disconnected and the system restarted, but then
powered off after the power-on beep,
the system starts and runs without problem. However, if the system is
turned off again and restarted (with the CD-ROM still attached), it
will lock up as before.
The failure is more prevalent on Pentium 90 MHz motherboards which use
the Intel TRITON chipset.
The failure occurs with either AWARD or AMI BIOS versions.
RESOLUTION
The problem was corrected with the addition of a 33 Ohm resistor in
the reset line of the IDE cable.
Note: This is not an OS/2 issue; please contact your hardware vendor
for assistance.
______________________________________________________________________
IBM disclaims all warranties, whether express or implied, including
without limitation, warranties of fitness and merchantability with
respect to the information in this document. By furnishing this
document, IBM grants no licenses to any related patents or copyrights.
Copyright (c) 1994, 1995 IBM Corporation. Any trademarks and product
or brand names referenced in this document are the property of their
respective owners. Consult your product manuals for complete trademark
information.