AudioDrive ES1688 OS/2 Drivers

                                 Version 1.01

                            Software Release Notes

                                October 2, 1995




        About This Release

        ESS Technology is providing OS/2 drivers for the AudioDrive
        ES1688 chip in this Software Release.  These drivers are
        complete updates to prior ESS releases for OS/2 Warp 3.0.

        This document provides:
        - a description of the changes to the drivers
        - installation notes

        Please read this document completely before you upgrade your
        system, and follow the instructions carefully.




        Release Information

        Product:        AudioDrive ES1688 OS/2 Device Driver,
                        Version 1.01

        Drivers:        ES1688 (with ESFM)

        OS:             OS/2 Warp 3.0

        Part Number:

        Release Date:   October 2, 1995




        Release Description

        The AudioDrive ES1688 OS/2 Driver Software Release incorporates
        the features listed below.

        Features in Version 1.01

        ESFM support

        The OS/2 driver supports ESFM, ESS's advanced FM music synthesis
        technology.


        APM support

        The OS/2 driver supports Advanced Power Management (APM).  It is
        recommended that users stop audio applications before putting
        the system into suspend mode.


        Bug Fixes

        1. The OS/2 driver fixes the problem that I/O base addresses 230
           and 250 were not allowed.

        2. The driver correctly resets the MIDI controllers after the
           MIDI file is stopped.

        3. The driver now can play fast tempo MIDI files.




        Known Problems

        1. Opening too many MIDI files makes the OS/2 system unstable.
           This problem is related to MMPM/2 and depends on system
           resource.

        2. Tempo in MIDI files is not 100% accurate due to timing delay.




        Installation Notes

        To install the new drivers successfully the following steps must
        be taken:

        1. If you just want to update drivers for the same AudioDrive
           chip, go to step 3.  If you want to replace drivers for
           different AudioDrive chips, then continue to step 2.

        2. Open an OS/2 Window and run the ESUNINST.EXE program on the
           installation disk by typing "A:ESUNINST".  This program will
           create a backup of CONFIG.SYS named CONFIG.ESS and remove
           the audio device lines from CONFIG.SYS.  It also creates a
           backup of MMPM2.INI named MMPM2.ESS and removes the audio
           drivers information from MMPM2.INI.  In addition, it removes
           any ESS driver information in COMPLIST.INI.

        3. In an OS/2 Window run the MINSTALL.EXE program on the
           installation disk by typing "A:MINSTALL".  Select AudioDrive
           ES1688 by clicking the mouse on that item.  A checkmark means
           it is selected.  If WinOS2 is installed in the system, you
           can select ES1688 WinOS2/Windows Audio support also.  If not,
           make sure that item is not selected.  Click the Install
           button to start the installation.  Once the drivers are
           installed, shutdown and restart OS/2 for the new ES1688
           drivers to take effect.


        These are the files copied to your hard disk:

        \MMOS2
                ES1688DD.SYS
                VAUDDRV.SYS
                TIMER0.SYS
                MINSTALL.EXE
        \MMOS2\DLL
                CARDINFO.DLL
                ESSVSD88.DLL
                WININST.DLL
                WINRES.DLL
        \MMOS2\HELP
                ES1688IN.HLP
        \OS2\BOOT
                CLOCK01.SYS
                CLOCK02.SYS
        \WINDOWS
                AUDDRIVE.HLP
                AUDMPU.HLP
        \WINDOWS\SYSTEM
                AUDMPU.DRV
                ES1688WN.386
                ES1688WN.DRV
                MIDIMAP.CFG
                MSMIXMGR.DLL