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YAMAHA OPL3-Sax drivers update for Windows 3.1
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NOTE: If you downloaded the drivers from an email or a website, the compressed file "31v2329i.exe" should already be decompressed and all decompressed files should already be copied to a directory called "C:\OPL3SA" on your hard drive. If this is not the case, refer to the instructions in your email or on the website where you downloaded the file.

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I. Disclaimer
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Yamaha sells audio integrated circuits to companies that manufacture Personal Computers or PC peripherals. We do not sell these products directly to consumers, and are therefore not staffed to provide support to end users of our customers' products. We therefore urge you to contact the manufacturer of your audio card or computer system to obtain the latest driver version for your current Operating System or to receive the appropriate technical support. 
Note that the Yamaha drivers MAY NOT BE APPROVED by the manufacturer of your card, and that they MAY NOT WORK with your specific card or system configuration.

* Other brands and trademarks in this document are the property of their respective owners. 

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II. Software that will be installed
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1.  OPL3-SAx device driver
2.  OPL3-SAx Configuration program
3.  Windows 3.1 setup utility

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III. Advanced Windows 3.1 users only
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This section is intended for advanced Windows 3.1 users only. Follow these procedures to update the Yamaha OPL3-SAx drivers on your system. If you are not an advanced Windows 3.1 user, or if you have difficulty following the procedures in this section, then you should complete the procedures found in section IV instead.

1.  Run the "SETUP.EXE" program from "A:\SETUP.EXE" for floppy disk installation or "C:\OPL3SA\SETUP.EXE" for email or internet download installation.
2.  The InstallShield Wizard will setup the installation process. Follow the on-screen instructions to install the OPL3SA drivers to your system.
3.  Once the setup process is completed, restart your computer. If the "YAMAHA OPL3-SAx Mixer" setup utility starts in MS DOS during the reboot, press the [Enter] key and proceed to the next step. Otherwise, the OPL3-SA drivers have been successfully installed on your computer. You may restart windows or turn off your computer now.
4. Press the [n] key when prompted if you wish to open the "YAMAHA OPL3-SAx Mixer" setup utility the next time your computer is rebooted. The setup utility will now configure your drivers. If an error message is displayed, refer to the SAREADME.TXT file to make the appropriate settings. Otherwise, the OPL3-SA drivers have been successfully installed on your computer. You may restart windows or turn off your computer now.

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IV. Installing updated drivers
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1.  If you are installing the drivers from a floppy disk, you should insert the OPL3-SAx installation floppy disk #1 in your floppy drive now.
2.  From the "Program Manager" menu bar, click "File".
3.  In the "File" drop-down menu, click "Run...".
4.  In the "Run" window, type the path for the drivers setup program in the "Command Line:" box. If you are installing from a floppy disk, the path should be "A:\SETUP.EXE". If you are installing from you hard drive (email or internet download), the path should be "C:\OPL3SA\SETUP.EXE". Click the "OK" button.
5.  The "Setup" window appears while the InstallShield Wizard starts the setup process.
6.  In the "Welcome" screen, click the "Next" button.
7.  In the "Setup Options" screen, click the "Typical" icon.
8.  In the "Choose Destination Location" screen, verify that the directory displayed is "C:\OPL3SAX". This is the default directory where the drivers will be installed. Click the "Next" button.
9.  If the "Question" window appears at this point querying if you wish to install to the existing directory, click the "Yes" button.
10. In the "Modifying AUTOEXEC.BAT File" screen, click on the "Let Setup modify the AUTOEXEC.BAT file" option. Click the "Next" button to allow the Setup program to modify your system's AUTOEXEC.BAT file.
11. In the "Information" window, click the "OK" button.
12. In the "Modifying SYSTEM.INI File" screen, click on the "Let Setup modify the SYSTEM.INI file" option. Click on the "Next" button to allow the Setup program to modify your system's SYSTEM.INI file.
13. In the "Information" window, click the "OK" button.
14. If the "Question" window appears at this point querying if you wish to overwrite the existing MIDI mapper, click the "YES" button.
15. The "Setup" progress indicator will be displayed while Windows copies the driver files to the designated directory on your system.
16. If you are installing from a floppy disk, the window "Setup Needs the Next Disk" will appear. Remove Disk 1 and insert Disk 2 into your floppy drive and click the "OK" button. Windows will now finish copying the driver files to your system.
17. In the "Folder Selection" screen, click the "Next" button to add the Yamaha icons to the "Program Manager".
18. The "Setup Complete" window now appears. Remove any floppy disk from your floppy drive. Click on the "Yes, I want to restart my computer now" option. Click on the "Finish" button to restart your computer now.
19. During the restart process, the 'YAMAHA OPL3-SAx Mixer" setup utility may start in MS DOS. If this is the case, proceed to the next step to complete the setup process. If the setup utility does not start, then the OPL3-SA drivers have been successfully installed on your computer. You may restart windows or turn off your computer now. 
20. If the "YAMAHA OPL3-SAx Mixer" setup utility starts, press the [Enter] key.
21. You will then be prompted if you wish to open the "YAMAHA OPL3-SAx Mixer" setup utility the next time your computer is rebooted. Press the [n] key.
22. The setup utility will now configure your drivers. If an error message is displayed, refer to the SAREADME.TXT file to make the appropriate settings. Otherwise, the OPL3-SA drivers have been successfully installed on your computer. You may restart windows or turn off your computer now.