Date:    10/17/1995
Product: 5511/5512/5513
Subject: IDE Driver Change Notice

The IDE driver has been changed from 551X108.ZIP to 551X109.zip.
    FOUR parts has been changed :
         (1) SiS IDE Driver Install Utility modified.
         (2) SiS IDE DOS Driver modified.
         (3) SiS IDE Windows 95 driver added.
         (4) SiS IDE Windows NT driver modified.

===============================================================================
5513IDE PROBLEM LOG:

1.      SiS IDE Install Utility fixed the bug of showing disk informations.

2.      One IDE Mode 4 Hard Disk (Segate ST-5850AT) with
        SCSI Card (AHA 2940) mounted with any SCSI Hard Disk.
        System will hang at accessing SCSI H.D when SiS IDE driver active.
Sol:    Fixed by unmasking 8259 IMR.

3.      AutoCAD R13 will fail with SiS IDE driver active.
Sol:    Version 1.09 fixed.

4.      Fujitsu H.D. will still run under PIO mode when it has been setted to
        DMA mode by SiS IDE Install Utility.
Sol:    Modified by driver won't show DMA message when H.D doesn't support DMA
        mode.

5.      Windows 3.1 PS/2 mouse driver can't work with SiS IDE DOS driver.
Sol:    Version 1.09 fixed.

6.      WDC 31000 H.D cann't boot with Windows NT 3.51 while SiS IDE Windows NT
        driver loaded.
Sol:    Version 1.09 fixed.

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Q & A :

1.      Novell Netware Server will hang when client is trying to loggin.
Ans:    Please remember to use Un-Install function to remove SiS IDE DOS Driver
        after SiS IDE Netware Driver installed.

2       How to use 32-bit file access for Hard Disk and CD-ROM working at the
        same channel in WFW 3.11 environment ?
Ans:    It is a limitation of the system. You should either put the devices in
        different channel or turn the 32-bit file access off.

3.      DOS Driver adjusts HD speed by parameter :
E.g:    You can write the following line in config.sys
                device=c:\siside\sisdr.sys /Rxxxx /Axxxx
        Where x could be 0 .. 9, A .. F for speed .
                R : Recovery time
                A : Active time    ( ref. data sheet for 551X )

4.      After SiS IDE DOS driver installed. Some mode 4 hard disk will cause
        system hang at the IDE driver loading procedure when we reboot the
        system.
Ans:    Users can avoid this by downing the speed in Manual function as Q&A 3.

5.      Why NT3.5 can't boot completely after installed IDE driver and reboot ?
Ans:    Windows NT and SiS IDE Drivers can't both be active under NT system.
        User just need to follow the README procedure to remove Windows NT IDE
        Driver after SiS IDE Driver installed.