				OPTi 82C924/925 LATEST INFORMATION
		 DOS/Windows (Version 1.05R4 )
				  08/06/96

Important note:
----------------

    Win95/DOS Package:
	For the users of the Windows 95, please Install Windows 95
	Driver first. Read the README.W95 for the installation guide.

    Win3x/DOS Package:
	For the users of the Windows 3.x and DOS, please install
	this package from a REAL DOS prompt. Do not run it in a 
	Windows' DOS session.

---------------------------------------------------------------------

0.  What's NEW in this release

	- Add one more control flag: EXT_OPL3_CONTROL in SOUND16.CFG
	- Rearrange timing and sequence so that this program works on
	  several very old 486 system.

	- We don't supply CD-ROM drivers any more.
	- Accept new IDE resources and make the installation simpler.
	- Clean up after installation.

    For V1.05R1:
	- Fixed karaoke related problems. MIC out default to zeros.

    For V1.05R2:
	- Fixed Compaq mother board no FM bug.

    For V1.05R3:
	- No more SNDINIT1.EXE.
	- CDSETUP.SYS is PnP aware and takes care of CD-ROM PnP 
	  resource setup.
	- When CD-ROM selection is NONE, don't insert CDSETUP line in
	  CONFIG.SYS. (Also changed CDSETUP.SYS, don't copyright 
	  message, and interface disabled message).
	- Rearrange the cleanup after installation.
	- Windows 3.x volume settings are customizable for 
	  installation.
	- Uninstaller for Windows 3.x and/or DOS drivers and 
	  applications.

	For V1.05R4:
    - Fixed AD1845 44k Full-Duplex noise when stop/record toggle rapidly.
    - Installation default as singlemodeDMA = NO.
    - Removed OPTi at the MPU401 MIDI OUTPUT PORT.


1.  SOFTWARE PACKAGE CONTENTS

	Package 1) Windows 3.x/DOS installation package:
	------------------------------------------------

	  The 82C924/925 software package contains (1) 3.5" 1.44M diskette.
	  - This is the DOS plus Windows 3.x installation diskette

	  The Installation diskette has the following subdirectories and 
	  files:

	  a.)  Installation files
			 - INSTALL.EXE  - installation program
			 - INSTALL.DAT  - on-line help text file
			 - CDROM.CFG    - CDROM Config File
			 - README.TXT   - This file
			 - SOUND16.CFG  - Device Configuration File
			 - LOGO.BMP     - Company Logo BMP File

	  b.)  DOS Drivers & Files
			 - SNDINIT.EXE  - SNDINIT2.exe loader 
			 - SNDINIT2.EXE - hardware config and test program in Non 
							  PNP environment
			 - VOLUME.BAT   - DOS volume setup program
			 - CDSETUP.SYS  - CD-ROM setup device driver
			 - DEMO8.WAV    - 8-bit Wave audio file
			 - DEMO16.WAV   - 16-bit Wave audio file
			 - SOUND16.CFG  - Device configuration file
							

	  c.)  Windows Drivers & Files (sub Directory: WINDRV)
			 - SND924.DRV   - Base audio device driver
			 - OPTIKB.DLL   - MPU-401 PNP-aware Device Driver
			 - VSND924D.386 - Virtual device driver
			 - MSMIXMGR.DLL - Microsoft mixer manager
			 - MIDIMAP.CFG  - Configuration file for Midimapper
			 - OEMSETUP.INF - For Windows drivers re-installation
			
	  d.)  Windows Audio Application Programs  (sub Directory: WINAPP)
			 - MIXER_IX.EXE - Audio volume mixer control program
			 - APLAYER.EXE  - Wave audio playback and recording 
							  demo application
			 - README.WRI   - Readme file for APLAYER.
			 - UNINSTAL.EXE - Uninstaller for Windows 3.x and/or DOS
							  drivers and applications
			 - CLEANALL.EXE - Help UNINSTAL.EXE to do cleanup

			 Besides, you may get other audio applications from your 
			 sound card manufacturer. Most likely, they will install 
			 their audio applications through this INSTALL package 
			 as well.

    Package 2) Windows 95/DOS drivers installation package:
	-------------------------------------------------------
	  (Not Available at this time 2/20/96)

	  The 82C924/925 Windows 95/DOS installation package contains (1) 3.5" 
	  1.44M diskette.
	  - This is the Windows 95/DOS installation diskette

	  The Installation diskette has the following subdirectories and 
	  files:

	  a.)  Windows 95 Installation files
			 - INS.INF
			 - SND924P.INF

	  b.)  Windows 95 drivers and files:
			 - SND924P.DRV
			 - SND924P.VXD
			 - SNDM401P.DRV
			 - SNDM401P.VXD
			 - SNDOPL3P.DRV
			 - OPTJOY.IN_
			 - README.W95

	  c.)  Installation files
			 - SND4DOS.EXE  - Win95 DOS installation loader
			 - INSTALL.EXE  - DOS installation program, invoked 
					  by SND4DOS.
			 - INSTALL.DAT  - on-line help text file
			 - CDROM.CFG    - CDROM configuration file
			 - README.TXT   - This file
			 - SOUND16.CFG  - Device fonfiguration file
			 - LOGO.BMP     - Company logo BMP file

	  d.)  DOS Drivers & Files
			 - SNDINIT.EXE  - SNDINIT2.exe loader 
			 - SNDINIT2.EXE - hardware config and test program in Non 
						  PNP environment (without CM)
			 - VOLUME.BAT   - DOS volume setup program
			 - VOLTSR.EXE   - Volume memory resident program
			 - CDSETUP.SYS  - CD-ROM setup device driver
			 - DEMO8.WAV    - 8-bit Wave audio file
			 - DEMO16.WAV   - 16-bit Wave audio file
			 - SOUND16.CFG  - Device configuration file
							

			
3.  WINDOWS 3.x/DOS DRIVER INSTALLATION PROCESS

  !!! Note: For Windows users, please exit from Windows and run
		    the installation from DOS. !!!

	  The hard disk installation program, INSTALL.EXE, will copy 
	  the necessary files from OPTi Installation disk into your hard 
	  disk. Follow the following procedure to install the software:

	  (Assuming you are using floppy drive A, and you wish to install
	   to hard disk drive C)

	  1. Place the disk labeled "  Windows 3.x/DOS Drivers   " in 
		 Drive A.

	  2. Type a: and press ENTER to change to Drive A.

	  3. Type install and press ENTER to begin the installation.

	  INSTALL.EXE will do the followings for you: 
	 
	  a.) Create the directory \OPTI in your hard disk drive. 

	  b.) Prompt you for CD-ROM and sound card options so that after
		  you have finished the installation and have rebooted your 
		  machine, you will be ready to use the sound card.

	  c.) Copy the files in your floppy disk to the OPTI directory 
		  and Windows directory respectively.

	  d.) Update your CONFIG.SYS, AUTOEXEC.BAT and SYSTEM.INI files

			In CONFIG.SYS

	      If you use a CD-ROM with the sound card:
				DEVICE=C:\OPTI\CDSETUP.SYS /T:I /P:170 /I:15 
								       
	      
	      If you don't use a CD-ROM with the sound card:
				DEVICE=C:\OPTI\CDSETUP.SYS /T:X 

			In AUTOEXEC.BAT:
 
			  PATH=C:\OPTI (appended)
			  SET SOUND16=C:\OPTI
			  C:\OPTI\SNDINIT /B
			  SET BLASTER=A220 I5 D1 T4
			    ^
			    |
			    +------- IO: 0x220, IRQ: 5, DMA: 1


			In SYSTEM.INI:

			- [drivers]
			  WAVE=SND924.DRV
			  AUX=SND924.DRV
			  MIDI=SND924.DRV
			  MIXER=SND924.DRV
 
			  [386Enh]
	      ;OPTi COMM interface. Please do not delete/modify  
			  COMxBase=modem IO Port
			  COMxIrq=modem IRQ

			  DEVICE=VSND924D.386

			  [snd16.drv]
			  SingleModeDMA=YES
	      CodecType=AD1848

			  * SND924.DRV is the Base driver comprising WAVE, MIDI,
			    MIXER and AUXILIARY audio services.

	      * The program only add/update the lines related to modem
			    when the sound card supports modem. 

			  * VSND924D.386 is the Virtual Device driver for Windows 
			    Enhanced Mode.
			  * x in the COMxIrq, COMxBase is the COMM number (0-4, 
			    0 means that modem is disabled).    

4.  WINDOWS 95/DOS DRIVERS PACKAGE INSTALLATION PROCESS

	  During the installation of 82C924/925 Windows 95 driver, 
	  the installation program will insert a line in AUTOEXEC.BAT to 
	  invoke the SND4DOS program to install the 924/925 DOS driver.  
	  After installed the Windows 95 driver, the Windows 95 asks for 
	  a reboot to make the new hardware (in this case, sound device) 
	  to work properly.     After reboot, the SND4DOS will be invoked and 
	  bring up the DOS driver installation program (install.com on the 
	  installation disk ) to install the DOS driver and remove the line 
	  SND4DOS inserted in AUTOEXEC.BAT.     
	 
	  Please follow the following procedure to install the software:

	  1. Follow the installation guideline provided with 924/925
		 Windows 95 driver to install the Windows 95 driver.  
	
	  2. During the first reboot after installed the 924/925 Windows
	     95 driver, the program SND4DOS will take over. Just follow 
		 the instrution of SND4DOS to bring OPTi DOS Installer to 
		 setup the Sound Card for your Windows 95 real DOS environment.

		 !! If you decide not to install at current time, you always
		    have a chance to re-setup your sound card support for DOS
			later. Just type C:\SND4DOS at your Real Mode DOS Prompt.

	  3. DOS Installer actually is the same one as Win3x/DOS.
		 The differences are 
		     a. it won't install Win3x Drivers and applications.
			 b. it inserts a line into DOSSTART.BAT in Windows 95
			    Home Directory. 

		 DOS Installer will modify Windows 95 system files:

			In CONFIG.SYS

	      If you use a CD-ROM with the sound card:
			    DEVICE=C:\OPTI\CDSETUP.SYS /T:I /P:170 /I:15 
								   
	      
	      If you don't use a CD-ROM with the sound card:
			    DEVICE=C:\OPTI\CDSETUP.SYS /T:X 

			In AUTOEXEC.BAT:
 
			  PATH=C:\OPTI (appended)
			  SET SOUND16=C:\OPTI
			  C:\OPTI\SNDINIT /B
			  SET BLASTER=A220 I5 D1 T4
			    ^
			    |
			    +------ IO Port: 0x220, IRQ: 5, DMA: 1

			In DOSSTART.BAT:
			  C:\OPTI\SNDINIT /B
			

		
5.  SNDINIT.EXE COMMAND OPTIONS
 
	  You can issue the following command to get the command
	  line options about sndinit.exe:

	  - SNDINIT /?


	  The command options you can use with the SNDINIT are:
		/b     - Setup and initialize the sound card.  The 
			 program doesn't bring up the graphical 
			 user interface to let you select the 
			 sound card settings. This is the option
			 normally used.

		/b /m  - Setup sound card for playing games from 
			 MindScape.

		/v     - Activate Volume Control program to let
			 you adjust the volume settings.

		/s     - Let the user to select resources. 
			 When the system doesn't use Intel's CM, 
			 The program uses the resources the PnP
			 BIOS assigns to the sound card if the
			 system has a PnP BIOS.  But if you want
			 to overrule the PnP BIOS, use this option
			 and the program will allow you to choose
			 the resources you want to use for the
			 sound card. Once you use this option, 
			 your machine will use the settings you 
			 chosed ever after.
 
		/u     - Unlock the resources user selected.  This
			 is the reverse option of /S.  Once you
			 use this option, you will lose all the
			 settings you chosed by /S, and the program
			 will use resources the PnP BIOS assigned.

		/r     - Use this option only in the case that 
						 after the installation of the sound card,
						 the PnP BIOS disables the secondary IDE
						 interface on the motherboard, and you must
						 connect the CD-ROM drive to the IDE interface
						 on the sound card in order to make CD-ROM
						 drive work.  This option trys to enable the
						 IDE interface on the sound card even when the
						 secondary IDE interface exists in the system.

		None   - Activate configuration program. Normally 
			 you shall use SNDINIT without any option
			 to change the settings of your sound card,
			 like when you change your CD-ROM drive, or
			 you like to disable/enable the game port
			 interface on your sound card, etc..
			 


6.  CD-ROM Interface Setup

	  The CD-ROM Setup Device Driver is CDSETUP.SYS. This driver sets 
      up the CD-ROM interface on the 82C924/925 sound card. Each time 
      you changed or added a CD-ROM to your sound card, the line 
      "DEVICE=CDSETUP.SYS..." will be added to the first line 
	  of your CONFIG.SYS file before the CD-ROM device driver line. 
	  CDSETUP.SYS is defined as follows:
	  
	  DEVICE=[drive:]\[directory]\CDSETUP.SYS /T:[/I/X] 

	  [drive] = drive where you have the driver installed
	  [directory] = directory where the driver is located
	  [/I/X] = type of CD-ROM drive
						 I stands for IDE drive
						 X stands for no CD-ROM

	  For example, the following line sets up the interface for a 
	  IDE CD-ROM:

	  DEVICE=C:\OPTI\CDSETUP.SYS /T:I 

	  Notes for 82C925:
	  ----------------
	  Normally, the IDE CD-ROM uses IO ports 376h, 170h and IRQ 
	  15. But when the system has a secondary IDE interface on the
	  motherboard, the PnP BIOS may assign resources other than
	  376h, 170h and IRQ 15 to the IDE interface on the 925 sound
	  card.  It is recommanded that the users always connect 
	  their CD-ROM drive to the on-board secondary IDE interface 
	  when it exists on the system.  This is because most of the 
	  BIOS or PnP configuration manager favor the secondary IDE 
	  interface and allocate the default resources (376, 170, 15)
	  to it, if the user choose to use the IDE interface on the 
	  sound card, the DOS IDE CD-ROM driver may not work if the 
	  sound card doesn't get default resources. 

	  But some BIOS may disable the secondary IDE interface on
	  the motherboard and give the default resources to the IDE
	  interface on the sound card.  In this case, the user must
	  install the CD-ROM drive to the IDE interface on the sound
	  card to make the CD-ROM works. 

	  However, if you choose to install the IDE CD-ROM to the 925
	  sound card IDE interface, even though the CD-ROM drive 
	  doesn't work in DOS, it may work in Windows 95, if you are
	  lucky, I mean, if you got a good BIOS in your system.  You
	  can get two IDE CD-ROMs on your computer.

7) Run DOS games in Windows 3.x

   a) Sometimes, the Setup of the PIF file of a DOS game is crucial. 
	  To make a game work effectively under Windows, you probably 
	  have to try a few alternative options through PIF editor.

   b) Not all the DOS games can run in Windows' DOS BOX. Some of 
	  them just don't run because of system restrictions.
	 

