Autor: Jacek Piskozub (piskozub_at_iopan.gda.pl)
Data: Thu 31 Jul 1997 - 14:01:10 MET DST
Jerzy Goca wrote:
> Witam !
> Mam następujące pytanie: (WIN95, Płyta AT2000 z Pentium 166, HDDSegate
>
> 2.5GB, CDROM Toshiba XM-5602B)
> Do tej pory HDD i CDROM siedziały na współnym kablu w primary IDE i
> wszysko było OK.
> Zainstalowałem kieszeń do której wsuwa się dysk, który ze względu na
> kompatybilność z innymi komputerami, do których bywa wsuwany, powinien
>
> być ustawiony jako SLAVE. W tej sytuacji konieczne było przepięcie
> CDROM na secondary IDE, a kieszeni na primary.
> Problem polega na tym, że WIN95 nie chce "zobaczyć" CDROMA na
> secondary IDE, jeśli nie ma na tym samym kablu dysku. Manager urządzeń
>
> powiada, że secondary IDE nie ma , nie działa poprawnie lub nie ma
> zainstalowanych... . Zworki sprawdzone - jest OK. Czy to zjawisko
> normalne czy coś robię nie tak ?.
>
To może być jedno z dwojga: kontroler 82371SB PIIX3 IDE na płycie
głównej z chipsetem Intela lub CD-ROM nie w pełni zgodny z ATAPI. W obu
przypadkach CD-ROM nie chce działać jako master na dwugim kanale IDE. Na
pierwsze jest rada, na drugie nie. Opis za stroną
http://www.tyan.com/html/2nd_ide.html
Dłuuugi cytat:
There are two known issues involving CD-ROM drives:
The retail version of Microsoft Windows 95 may not recognize the
Intel
82371SB PIIX3 IDE controller used on Intel chipset based motherboards,
causing
the BIOS to disable the secondary IDE channel. This can result in IDE
devices
(such as CD-ROM drives) not being detected or disappearing after the
system is
rebooted. A utility is available
(ftp://ftp.tyan.com/other/ideinfup.zip) to update the
MSHDC.INF file and resolve the issue.
Windows 95 also may fail to recognize a CD-ROM drive that does
not comply
with the ATAPI specification.
Description of Problem
Version 4.00.950 of Microsoft Windows* 95 may not recognize a
non-compliant
ATAPI device when configured as a master and connected alone on the
secondary
IDE port on Intel motherboards using the Intel 82371SB PIIX3 IDE
controller. This
can result in the ATAPI device (such as CD-ROMs) not being detected or
being
configured improperly.
Root Cause
This problem has been isolated to CD-ROM drives that do not comply
with the
ATAPI specification. These IDE CD-ROMs may use an ATAPI interface chip
that
floats the IDE bus in between a "secondary slave identify" command and
a
subsequent read of the status register -- and potentially confusing
the detection
algorithm used by the Windows* 95 driver.
Although only one ATAPI device is connected as a master to the
secondary IDE
channel, Windows 95 detects another, non-existent device. When other
functions
try to use this ghost device, they fail and time out. As a result, the
secondary
channel is taken out of service, including the CD-ROM drive that was
properly
configured.
Users can detect a potential problem by using the Windows 95 Device
Manager
(click Start, Settings, Control Panel, double click on the System
icon, then click
on the Device Manager tab). The CD-ROM entry may potentially be
missing and
the secondary IDE controller under the Hard Drive Controller section
will appear to
be in conflict with another device or not working properly.
Depending upon the CD-ROM in use, the drive may potentially be
detected by
Device Manager or be seen under My Computer. However, if the
Secondary IDE
Controller is shown to be in conflict, the CD-ROM may not work
reliably.
Affected Products
This issue potentially affects all motherboard products with the
82371SB
component.
Workaround / Action
Microsoft Corporation is aware of the issues on Intel platforms
running Windows*
95 and is actively pursuing a software implementation to resolve the
problem with
the non-compliant ATAPI CD-ROM drives. This driver should now be
available in
their new OSR2 release. Check their web page for more information.
As a workaround, Intel recommends a system configuration consisting of
a single
IDE hard disk drive and a single CD-ROM drive as a master and slave on
the
primary IDE port. Contact Intel Application Support for other
workaround options that may be available.
-- Jacek Piskozub Institute of Oceanology PAS, Sopot, Poland mailto:piskozub_at_iopan.gda.pl http://www.iopan.gda.pl/~piskozub
To archiwum zostało wygenerowane przez hypermail 2.1.7 : Tue 18 May 2004 - 16:15:48 MET DST