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[드라이버] ES1878 AudioDrive OS/2 Driver

started by on May 10 2017 – Last touched: Oct 06 2018 07:30 pm

May 10 2017 12:53 am    

ES1878 AudioDrive OS/2 Driver

                             Version 1.05

                        Software Release Notes

                          September 16, 1996

    About This Release

    ESS Technology is providing updated OS/2 drivers for the
    ES1878 AudioDrive 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:        ES1878 AudioDrive OS/2 Device Driver,
                    Version 1.05

    Drivers:        ES1878 (with ESFM and wavetable)

    OS:             OS/2 Warp 3.0

    Release Date:   September 16, 1996

    Release Description

    The ES1878 AudioDrive OS/2 Driver Software Release incorporates
    new changes done to the previous release, Version 1.02.

    Version 1.05 Changes

    1. Advanced Power Management (APM) code is fixed.

    2. A problem with MIDI opening is fixed.

    Version 1.04 Changes

    BIOS audio volume control support

    The driver checks the master volume before changing it in case
    the BIOS or other application has modified it.

    ES938 support

    An application, ES938.EXE, is provided to control ES938 3D
    Stereo Processor.

    Limited Zoom Video support

    The driver activates Zoom Video port on startup.

    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.  On systems with 8 Mbs memory, the limit is 3;
       16 Mbs, 6.

    2. Tempo in MIDI files may not be 100% accurate due to timing
       delay and MMPM/2 architecture.

    3. Running MCI commands "seek wave to #" and then "play wave" to
       a 16-bit wave file sometimes generates very loud static
       noise.  Likewise using "record wave from #" to record a
       16-bit wave file may generate wrong file.  It all depends on
       the seek position.

    4. To be able to play and record wave files at the same time,
       the enforcement of only one active wave file by MMPM/2 is
       relaxed.  Therefore, some problems or erratic behaviors may
       pop up if two wave files are played.

    5. The OS/2 driver allows sharing of audio and MPU-401
       interrupts, but it is not recommended.  If both are shared,
       occasionally too much MIDI in data will lock up AudioDrive's
       interrupt processing when a wave file is played or recorded.
       To get out of this situation, stop the wave file, stop the
       MIDI in source, close all MIDI files, and restart the wave
       file to re-initialize AudioDrive's interrupt processing.

    6. Due to the nature of MIDI music, turning MIDI in on while the
       MIDI in data are coming may not generate the right sounds.
       It is recommended to stop the MIDI in source first before
       enable MIDI in.

    Installation Notes

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

    1. Open an OS/2 Window and run the EINSTALL.EXE program on the
       installation disk by typing "A:EINSTALL."  The program first
       runs ESDETECT.EXE to auto-detect the chip, then calls
       ESUNINST.EXE to remove old drivers.  That 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
       other ESS driver information in COMPLIST.INI.  After then,
       the installation program calls Multimedia Application Install
       program, MINSTALL.EXE.

    2. When Multimedia Application Install program brings up, a
       check mark beside ES1878 AudioDrive means that item is
       already selected.  To toggle selection, click the mouse on
       the item.  If WinOS2 is installed in the system, you can
       select WinOS2/Windows Audio support also.  If not, make sure
       that item is not checked.  Click the Install button to start
       the installation.  Once the drivers are installed, shutdown
       OS/2 and reset the computer for the new ES1878 drivers to
       take effect.

    3. If the installation cannot be completed, read the logs
       in MMOS2INSTALL subdirectory or root directory to find out
       the problem.

    4. Since this version of MINSTALL.EXE changes the icons of MIDI
       player and Digital Video player to that of Digital Audio
       player in the Multimedia folder, you may want to change them
       back to the originals.  To change the icon of MIDI player,
       right click MIDI player to bring up the menu.  Select
       Settings, select General, and click the Find... button.  In
       the Start Folder window, enter MMOS2INSTALL.  Click the
       Find button and a window of all found icons appears.  Select
       MIDIPLAY.ICO and click OK.  Close the MIDI player Settings
       notebook.  For Digital Video player, repeat the above steps
       but select VIDPLAY.ICO instead.

    5. If the MIDI plays are not smooth in WinOS2, you need to
       change the timer resolution.  Edit SYSTEM.INI in your Windows
       directory.  Under [timer.drv] are TIMERMax386Res and
       TIMERMax286Res.  You need to change the values to less than 8
       from the default of 10.

    Since ES1878 is a plug and play board, in a system with plug and
    play support the optimal settings will be used instead of the
    settings specified in CONFIG.SYS.  If you change the ES1878
    settings in a system with no plug and play support, be sure to
    reset the computer for ES1878 to forget its previous settings.

    These are the files copied to your hard disk:



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