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Technical Q&As: Legacy Technologies
As Darwin evolves, the APIs and technologies it encompasses 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 A technology identified in the ADC Reference Library as deprecated has been superseded and may become unsupported in the future.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.

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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
Can't attach during two-machine debugging with GDB (HTML) ()
QA1019: Describes a workaround for a problem attaching during two-machine debugging on Mac OS X 10.0.x.
Deprecated 2003-06-02
Determining if a Drive is a Network Volume (HTML)
FL01.
Unsupported 1995-11-01
File Corruption with SCSI Manager 4.3 (HTML)
DV06.
Unsupported 1995-07-01
Macintosh Quadra 700 and 900 SCSI Chip Anomaly and Fix (HTML)
DV08.
Unsupported 1995-07-01
PCI Throughput Issues (HTML)
DV20.
Unsupported 1995-09-15
Synchronous SCSI Operation (HTML)
DV14.
Unsupported 1995-07-01
Using Standard SCSI Disk Drives on Macs (HTML)
DV16.
Unsupported 1995-07-01