Date:    06/26/1996
Product: 5596/5513
         5511/5512/5513
Subject: IDE Driver Change Notice

The IDE driver has been changed from 551X119.ZIP to 551X120.zip.
    SEVEN parts has been changed :

         (1) SiS IDE DOS driver modified.
         (2) SiS IDE Windows driver modified.
         (3) SiS IDE Windows NT 3.5 Driver modified.
         (4) SiS IDE Windows NT 4.0 Beta Driver modified.
         (5) SiS IDE Windows 95 Driver modified.
         (6) SiS IDE OS/2 Driver modified.
         (7) SiS IDE Novell 4.1 Driver modified.

===============================================================================
5513IDE MODIFIED LOG:

1.      Under DOS System, Seagate ST3850A Hard Disk hang when SiS IDE DOS
        Driver installed.
Sol:    Version 1.20 solved.
        Driver must set ST3850A wait state's Recovery and Active time to 3.

2.      Under DOS System, Driver can't be installed when using Award BIOS
        (only with 5596 chipset and BIOS after May,96 version)
Sol:    Version 1.20 solved by avoiding using same reserved area with AWARD.

3.      Under DOS System, Coretest runs OK with 5596 chipset's Main Board.

4.      Under DOS System, any Hard Disk installed with Panasonic CDROM (CR-
        581-J or CR-582-B) on the same IDE channel with SiS DOS IDE driver.
        The driver will not detect the hard disk model correctly.
Sol:    Version 1.20 solved.

5.      Under Windows for Workgroup 3.11, make "SiS IDE DOS DMA Driver" to be
        compatible with EMM386.EXE
Dscrpt: In the past, incompatibility problems were :
        (1) System will reboot if load SiS IDE driver Ver 1.18 to high memory.
        (2) System hang when writing data to hard disk after quick suspend
            and resume.

6.      Under Windows 3.1 System, Seagate ST3850A Hard Disk hang when SiS IDE
        Windows Driver installed.
Sol:    Version 1.20 solved.
        Driver must set ST3850A wait state's Recovery and Active time to 3.

7.      Tuning SiS IDE Windows Driver and making it more stable.

8.      SiS IDE Windows NT3.5 and NT4.0 beta PIO Mode Driver modified.
        (1) Performance improved.
        (2) Tuning wait state when different PIO mode hard disk install on the
            same IDE channel.

9.      SiS IDE Windows 95 PIO Mode Driver modified.
        (1) Performance improved.
        (2) Tuning wait state when different PIO mode hard disk install on the
            same IDE channel.

10.     Under OS/2, some PIO Mode 2 Hard Disks hang when SiS IDE OS/2 DMA Mode
        Driver installed.
Sol:    Auto detect some PIO Mode 2 Hard Disks which does not have DMA Mode
        supported.

11.     System hang during Novell 4.1 installation procedure when SiS IDE
        Novell 4.1 Driver installed.
Sol:    Version 1.20 solved.
