      Analog Devices, Inc., Sound Processing Team History Document

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                 Microsoft Windows WDM Device Driver
                     AD1881 SoundMAX Controller

                  May 27, 1999 Modification Date

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                              Versions

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Package Release:	WDM00043

Installer Version:	1.00.004

4.10.2225  WDM Driver                           	(5/27/1999)
                         	
	*  Fixed ACT Wave Driver Test 9:14.

	*  Additional changes made to improve releases 
	   and acquires of mappings.

	*  Removed Subsystem Ids from INF that are not required.

	*  Removed entry in INF file which checked Intel chipset 
	   revision level.
                    	
4.10.2223  WDM Driver (not released)
                    	
	*  Fixed problem with wave files playing at lower rate 
	   when simultaneous files at different sample rates.

	*  Fixed stereo wide problem. Re-established setting 
	   after reboot.

	*  Added code to set initial value from INF file for 
	   PCM Out.

	*  Fixed record problem in Win2000.

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Package Release:	WDM00038

Installer Version:	1.00.004

4.10.2222  WDM Driver                           	(5/7/1999)

	*  Fixed 3 db attenuation problem when playing streams other
	   than 44 KHz.

	*  Added code to remove popping sound after putting the unit
	   in SUSPEND.

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Package Release:	WDM00036

Installer Version:	1.00.004	

4.10.2120  WDM Driver                           	(4/23/1999)

	*  Added fix for WaveInStart test in ACT (4.2).

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Package Release:	WDM00034

Installer Version:	1.00.003 

4.10.2119  WDM Driver                           	(4/15/1999)

	*  Added fix for WaveIn sample rate drift in ACT (4.2).

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Package Release:	WDM00033

Installer Version:	1.00.003

4.10.2118  WDM Driver                   		(4/13/1999)

	*  System ID is used to confirm that INF file is appropriate
	   for this device. Additional ID was added to INF file.

	*  Added format conversion so that the WDM driver will work 
	   with the current released version of Win98 (workaround 
	   to KMIXER problem with recording 8-bit mono, 16-bit mono, 
           and 8-bit stereo).

	*  Set DACZ bit to play zeros when starved for data. 
	   Without bit set, this will play last sample which can cause 
	   zipper noise when volume slider moved.

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Package Release:	WDM00026

Installer Version:	1.00.002

4.10.2113  WDM Driver                   		(3/3/1999)

        *  Modified releasing of scatter/gather descriptors. Fixed
           problem in ACT (waveInReset).

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Package Release:	WDM00022

Installer Version:	1.00.001

4.10.2112  WDM Driver					(2/19/1999)

    	*  Added support for Max/Min volume settings read from Inf.

    	*  Fixed Capture Callback problem.

	*  Added support for initial default values (volume, mute,
           etc.).

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Package Release:	WDM00019

Installer Version:	1.00.001			

4.10.2111  WDM Driver - No changes			(2/11/1999)

	*  Included the missing .ISS file.

	*  Added international version of installation software.

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Package Release:	WDM00017

Installer Version:	1.00.000

4.10.2111  WDM Driver                  			(2/8/1999)

	*  Added support for default initial control settings read
           from Inf.

	*  Power Management tested.

	*  Topology finished.

	*  Recording Formats added.

	*  Localization added.

	*  Installation/Uninstall.

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Package Release:	WDM00015
                            
4.10.2110  WDM Driver                          		(1/28/1999)

    	*  Added Power Management code (not tested, do not have
           platforms which support ACPI).

	*  Fixed problem where multiple open instances of Media Player
	   caused system to crash.

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4.10.2109  WDM Driver                          		(1/20/1999)

    	*  Added topology modification to use Microsoft supplied
           generic control names.

    	*  Added Keys for disabling controls.

    	*  Added FIFOE detection (AMR fix).

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4.10.2108  WDM Driver					(1/8/1999)

	*  Added topology modifications to Record Control.

	*  Added topology modifications for Phat Stereo bypass control.
	
	*  Renamed MonoSum loopback to Mono Out.

	*  Changed driver and Inf file names to reflect ADI specific
	   driver.
	
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4.10.2107  WDM Driver					(12/23/1998)

	*  Fixed power up sequence after warm reboot.

	*  Cleaned up compiler warnings.

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4.10.2104  WDM Driver					(11/20/1998)

	*  Added timeout in case hardware is broken.

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4.10.2103  WDM Driver

	*  Alpha release. First functional driver tested with hardware.

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4.10.2101  WDM Driver

	*  Pre-alpha release. Not tested on hardware.

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