			 OPTi 82C924 LATEST INFORMATION
                           DOS/Windows (Version 1.02 )
                                				07/21/95

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

0.  What's NEW in this release

	- Customizeable Mixer Driver for Supporting extended mixer channels
      		found in MODE 2 CODECs. Please contact OPTi for specifications
                on this customizeable feature. Current customization file 
                resides in Windows' SYSTEM directory.

	- Windows Drivers will not be allowed to load under Windows 95 due 
                to inherently different environments and possible conflicts
                with true Windows 95 Drivers from OPTi.
        
	- The program will guarantee the 82C924 in non-PnP mode when CM 
                doesn't present.

	 VOLTSR, KARAOKE, a DOS TSR volume control and karaoke program is 
         not included in this release and will be added in next release.

	 The following are known problems that are being worked on:
	        Memory requirement will be reduced

1) 82C924 Plug and Play Software Support  
        
	This section of information is only for OPTI's Manuafcturers.

	82c924 is a Plug and Play Enable Device. A true Plug and Play 
	Operating System will not yet come out until the final release of 
	Microsoft Win95. This OPTi software release targets at those new 
	machines with Plug and play ready (PNP BIOS shipped with the 
	computer) but still run DOS and Windows 3.1. All the pieces of 924
	software have 2 operating modes. Our 924 Programs and Drivers are 
	able to automatically detect PNP existence and switch into the 
	proper mode to get device H/W resource assignment which includes 
	IO addresses, Interrupt Channels and DMA Channels.

	As a device manufacturer, we decided not to force a PNP environment
	into the users' computers which may cause more problems. So if you
	have an old-fashion computer, that's fine and the software will 
	treat 924 as a legacy device. It runs just like 929 and 930 
	software which you are already familiar with. You make the decision
	to config your H/W resouce assignment. 
	
	If you have PNP-ready system, then 924 software will get H/W 
	resource assignment from DOS Config manager (a SYS file installed 
	through CONFIG.SYS). You still can disable and enable some of 924 
	features through the SNDINIT program to conserve the system H/W 
	resource and make them available for other adapter cards. But these 
	operations need to reboot to make the changes to take effort. you 
	also can do that through Intel's ICU utility. 

	If you need to install PNP environment into your system to make it
	PNP ready, please install Intel Plug and Play Kit. The version we
	use here is version 1.4Beta.

2.  SOFTWARE PACKAGE CONTENTS

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

	  The Installation diskette has the following subdirectories and 
	  files:

	  a.)  Installation files
			 - INSTALL.COM  - Hard disk 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.COM  -  SNDINIT1.exe or SNDINIT2.exe loader 
									 depending on PNP or Non-PNP environment
			 - SNDINIT1.EXE  - hardware Config and Test Program in PNP
									 environment
			 - SNDINIT2.EXE  - hardware Config and Test Program in Non 
									 PNP environment
			 - VOLUME.BAT   - DOS Volume Setup Program
			 - VOLTSR.EXE   - Volume Memory Resident Program
			 - KARAOKE.EXE  - Karaoke 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
			 - xxxx.SYS     - CD-ROM drivers

	  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
			 - KAR929.EXE   - Karaoke program
			 - APLAYER.EXE  - Wave Audio playback and recording 
									demo application
			 - README.WRI   - Readme file for APLAYER.

			 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.

			
3.  INSTALLATION PROCESS

	  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:

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

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

	  1. Place the disk labeled "OPTi 82C924 Installation" 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 \OPTI924 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 OPTI924 directory 
			and Windows directory respectively.

	  d.) Update your CONFIG.SYS, AUTOEXEC.BAT and SYSTEM.INI files
			In CONFIG.SYS, the following will be added:

			- DEVICE=C:\OPTI924\CDSETUP.SYS /T:S /P:340 
			  (assuming SONY CD-ROM)
			  DEVICE=C:\OPTI924\SLCD.SYS /D:MSCD000 /B:340

			In AUTOEXEC.BAT:
 
			- PATH=C:\OPTI924 (appended)
			  SET SOUND16=C:\OPTI924
			  C:\OPTI924\SNDINIT /B
			  SET BLASTER=A220 I5 D1 T4

			In SYSTEM.INI:

			- [drivers]
			  WAVE=SND924.DRV
			  AUX=SND924.DRV
			  MIDI=SND924.DRV
			  MIXER=SND924.DRV

			  [386Enh]
			  DEVICE=VSND924D.386

			  SND924.DRV is the Base driver comprising WAVE, MIDI,
			  MIXER and AUXILIARY audio services.
		
			  VSND924D.386 is the Virtual Device driver for Windows 
			  Enhanced Mode.


4.  GETTING HELP ABOUT SNDINIT.EXE
 
	  You can issue the following command to get information 
	  about sndinit.exe:

	  - SNDINIT /?


5.  VOLUME CONTROL TSR PROGRAM

	  The volume control memory resident program, VOLTSR.EXE, allows
	  you to change volume using hot keys while you are in a DOS 
	  application. The hot keys are:

		  Ctrl-Alt-U      Raises the volume
		  Ctrl-Alt-D      Lowers the volume
		  Ctrl-Alt-M      Mute

	  For example, pressing the CTRL, ALT, and U keys will raise 
	  the volume.

	  You need to load the TSR before you can use it. To load the TSR,
	  type VOLTSR at the DOS prompt.


6.  KARAOKE PROGRAM

	  The Karaoke.exe program allows user to control the input volume
	  of the microphone on the fly with "HOT KEYS." Before using 
	  Karaoke, the VOLTSR.EXE program must be successfully loaded
	  and running.

	  To enable Karaoke Mode, type: "KARAOKE ON" at the DOS prompt.

	  To increase MIC input, use: Ctrl-Alt-PageUp
	  To decrease MIC input, use: Ctrl-Alt-PageDown

	  To disable Karaoke Mode, type: "KARAOKE OFF" at the DOS prompt.


7.  CD-ROM Interface Setup Device Driver

	  The CD-ROM Setup Device Driver is called CDSETUP.SYS. This 
	  driver sets up the interface of your CD-ROM to the 82C924 sound
	  card. Each time you change or add 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:[M/S/P/I/X] /P:[addr] 
				/I:[IRQ] /D:[DMA]  

	  [drive] = drive where you have the driver installed
	  [directory] = directory where the driver is located
	  [M/S/P/I/X] = M stands for Mitsumi
						 S stands for SONY
						 P stands for PANASONIC
						 I stands for IDE drive
						 X stands for disabled

	  [address] = Port address for CD-ROM (320, 330, 340, 360)

	  [IRQ] = Interrupt number (5,7,9,10,11)

	  [DMA] = DMA channel (0, 1, 3)

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

	  DEVICE=C:\OPTI924\CDSETUP.SYS /T:M /P:340 /I:10

	  If you did not specify the /I or /D options, CDSETUP will 
	  automatically choose the default setting for the CD-ROM type 
	  your have specified.

	  - For Mitsumi, the IRQ is 10 and DMA is disabled.
	  - For SONY, they are both disabled.
	  - FOR PANASONIC, they are both disabled.

	  For IDE drive, you need to just specify the /T:I option. 
	  Specifying any other option in addition to this will be ignored.
	  The I/O Port and Interrupt for IDE is located at 170H and Int 15.


8) Run DOS games in Windows

	  Our implementation is designed for those DOS games which have
	  icons in Windows and run in full screen DOS and close after 
	  finished. When multiple DOS boxes are open, only the first 
	  DOS box owns the audio device. DOS Box support could be very 
	  complicated, we have to concentrate our implementation only on 
	  those features most useful to the general users. We recommend 
	  to run game or play audio in DOS box only one at a time. 
	  Close the DOS box which owns the device will return the device 
	  to Windows. Then you can play audio in Windows or run another 
	  DOS game.

	  !! Note !!
	  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.
	 


