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Technical Q&As: Legacy Technologies
As Mac OS X evolves, its technologies and APIs change to meet the needs of users and developers. As part of this evolution, less efficient features, interfaces, and programming techniques are deprecated or retired in favor of newer ones. Apple makes these changes only when deemed absolutely necessary. A technology identified in the ADC Reference Library as deprecated has been superseded and may become unsupported in the future. A technology identified as unsupported is no longer available from Apple for use by developers. Legacy documents help developers understand legacy technologies, identify replacements, and update their products to run on current Apple platforms.

View all Music & Audio Technical Q&As.
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Native Disk Driver Debugging (HTML)
DV41.
Unsupported 2000-02-28
Are the Name Registry device tree nodes unique? (HTML)
HW64: Discusses whether Name Registry nodes copied from the Open Firmware device tree are unique.
Deprecated 1999-10-11
Synchronizing Sounds to Video (HTML) ()
SND19: Enabling regular sound callbacks under Mac OS 9 and Sound Manager 4.0.
Deprecated 1999-10-05
Synchronous SysBeep (HTML) ()
SND18: Obtaining a synchronous SysBeep with Sound Manager 3.1.
Deprecated 1999-10-05
MACE Restrictions (HTML) ()
SND16: MACE algorithms only support the compression of 8-bit offset binary sound.
Deprecated 1999-06-08
Difference between PCCard SDK2 and SDK3 (HTML) ()
HW62.
Unsupported 1999-03-29
Is there a relationship between the device tree and the Name Registry? (HTML) ()
HW41.
Unsupported 1999-02-15
Capturing Speech Manager Output (HTML) ()
SND15: Capturing the output from the Speech Synthesis Manager to a file.
Deprecated 1998-05-18
Recording Compressed Sounds (HTML) ()
SND14: Sound Manager and sound input driver compression options are limited to allow interrupt time recording.
Deprecated 1998-04-12
siMonitorSource Selector (HTML) ()
SND13: Using the sound output siMonitorAvailable, and siMonitorSource selectors.
Deprecated 1998-04-12
siOSTypeInput Selectors (HTML) ()
SND12: The use of siOSTypeInputSource, and siOSTypeInputAvailable selectors and extracting the siOSTypeInputAvailable OSTypes returned.
Deprecated 1998-04-12
Setting Audio Input Gain (HTML) ()
SND11: Setting audio input gain under Mac OS 8.1.
Deprecated 1998-02-10
Selecting a specific sound input source (HTML) ()
SND10: Using the sound input driver to select specific sound input sources.
Deprecated 1998-01-16
siOSTypeInputAvailable Format (HTML) ()
SND09: The format of the data returned by the siOSTypeInputAvailable selector is SoundInfoList.
Deprecated 1998-01-16
MemError (HTML) ()
ME06.
Unsupported 1997-09-12
Speed of the Printer Port (HTML) ()
DV31.
Unsupported 1997-07-11
Playing Compressed WAVE files via the Sound Manager (HTML) ()
SND08.
Unsupported 1996-09-27
Playing Uncompressed WAVE files via the Sound Manager (HTML) ()
SND07.
Unsupported 1996-09-27
Sound Track Hiccups under Windows 95 (HTML) ()
SND06.
Unsupported 1996-09-27
Making Input Gain Setting Changes (HTML) ()
SND01: Changing the input gain setting on older Power Macs before recording.
Deprecated 1996-06-01
siActive Channels Unsupported on Some Power Macs (HTML) ()
SND03: siActive Channels is unsupported on some older PowerMacs (siUnknownInfoType returned by SPBGetDeviceInfo).
Deprecated 1996-06-01
SndPlayDoubleBuffer 16-bit Support (HTML) ()
SND04.
Unsupported 1996-06-01
Sound Ramp-up on Power Macs (HTML) ()
SND02.
Unsupported 1996-06-01
Static Sound on PCI Macs (HTML) ()
SND05.
Unsupported 1996-06-01
Setting Port Speed on a Modem Port (HTML)
DV25.
Unsupported 1996-02-23
PowerMac 9500 Sound Input (HTML)
DV21.
Unsupported 1995-09-15
A Method for AMT to "remember" Changes Made on Screen (HTML)
AMTPE16.
Unsupported 1995-08-01
Implementing read-modify-write on PCI (HTML)
HW08.
Unsupported 1995-07-15
Interrupt Management (HTML)
HW10.
Unsupported 1995-07-15
PCI Card's Assigned-Address Properties (HTML)
HW20.
Unsupported 1995-07-15
PCI Device and Driver Matching (HTML)
HW16.
Unsupported 1995-07-15
Testing PCI drivers without any device (HTML)
HW23.
Unsupported 1995-07-15
Use Macintosh SCSI Manager for SCSI Chip Compatibility (HTML)
DV15.
Unsupported 1995-07-01
WS PDS Card and SCSI Manager 4.3 (HTML)
DV17.
Unsupported 1995-07-01
SCSI Calls Translated for IDE Devices (HTML)
DV02.
Unsupported 1995-05-01
Virtual Memory Management (HTML)
ME02.
Unsupported 1995-05-01