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FireWire Audio User Library Framework Reference
(HTML)
Describes the API that supports user-space access to FireWire audio devices and enables the creation of virtual FireWire audio devices.
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Reference |
2008-04-08
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I/O Kit Framework Reference
(HTML)
Describes the I/O Kit classes that support non-kernel access to I/O Kit objects through the device-interface mechanism.
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Reference |
2008-04-08
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Kernel Framework Reference
(HTML)
Describes the APIs and classes (including I/O Kit families) that support kernel-resident device drivers.
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Reference |
2008-04-08
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Core Audio Glossary
(HTML)
(PDF)
Defines general digital audio terms as well as terms specific to Apple's Core Audio technology.
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Reference |
2008-02-08
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SimpleUserClient
(HTML)
(DMG)
(ZIP)
Shows how to create a user client for an I/O Kit kernel driver.
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Sample Code |
2007-05-31
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Unable to select input device in AU Lab
(HTML)
QA1526: AU Lab only supports physical device singletons.
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Technical Q&As |
2007-05-17
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Using AudioDeviceRead in Mac OS 10.4
(HTML)
TN2113: How to use AudioBufferLists with AudioDeviceRead in Tiger and beyond.
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Technical Notes |
2006-11-29
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SimplePlayThru
(HTML)
(DMG)
(ZIP)
Use the HAL's Audio Output Unit (AUHAL) for device input and output on a single device (play-thru)
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Sample Code |
2006-10-25
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The "packages" node in the device tree
(HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
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Technical Q&As |
2006-02-22
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Audio Device Driver Programming Guide
(HTML)
(PDF)
Explains how to develop kernel-resident drivers for audio devices.
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Guides |
2006-01-10
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AudioCDSample
(HTML)
(DMG)
(ZIP)
Demonstrates how to discover audio CDs and access the TOC information presented by the CD-DA filesystem.
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Sample Code |
2005-10-04
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SampleUSBAudioPlugin
(HTML)
(DMG)
(ZIP)
USB audio plugin that performs a lowpass filtering operation on audio streamed through an audio USB Device.
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Sample Code |
2005-03-07
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Obtaining the name of an external MIDI Device from a MIDI Endpoint
(HTML)
QA1374: Get the names of external MIDI Devices from MIDI Endpoints.
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Technical Q&As |
2004-12-01
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Available FireWire Isochronous Bandwidth
(HTML)
QA1356: Discusses attempting to "pre-flight" an isochronous bandwidth allocation request by reading the currently available bandwidth.
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Technical Q&As |
2004-07-07
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Generating an NMI Without a Programmer's Switch
(HTML)
( )
QA1264: Explains how to generate a non-maskable interrupt (NMI) on CPUs without programmer's switches.
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Technical Q&As |
2004-04-26
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Installing an I/O Kit KEXT Without Rebooting
(HTML)
QA1319: Describes the state of the art of installing I/O Kit kernel extensions (KEXTs) without requiring a restart.
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Technical Q&As |
2003-10-28
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VelEng FFT
(HTML)
(DMG)
(ZIP)
G4 Velocity Engine implementation of Fast Fourier Transform (FFT) and associated convolution/correlation routines.
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Sample Code |
2003-01-14
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Retain Counts of io_object_t Objects in IOKit.framework
(HTML)
()
QA1195: Distinguishes between the retain counts of an I/O Kit kernel object and its io_object_t user space proxy.
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Technical Q&As |
2002-09-04
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IODeviceTree & the IORegistry
(HTML)
()
QA1120: Describes the IODeviceTree plane in the Mac OS X IORegistry.
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Technical Q&As |
2002-02-13
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IOKit Framework Headers
(HTML)
()
QA1107: Describes the differences between the headers in IOKit.framework and the I/O Kit headers in Kernel.framework.
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Technical Q&As |
2002-01-15
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Is the Open Firmware device tree object oriented?
(HTML)
HW80: Discusses the object-oriented attributes of the Open Firmware device tree.
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Technical Q&As |
1999-11-15
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When to use PCMCIA, PC Card, and CardBus
(HTML)
HW77: Explains the differences between PCMCIA, PC Card, and CardBus.
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Technical Q&As |
1999-11-15
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Are the Name Registry device tree nodes unique?
(HTML)
Deprecated - HW64: Discusses whether Name Registry nodes copied from the Open Firmware device tree are unique.
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Technical Q&As |
1999-10-11
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Sample code for allocating an amount of dictionary space
(HTML)
HW71: Discusses the allocation and the setting of memory for Dictionary space in Open Firmware.
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Technical Q&As |
1999-10-11
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What is the "dump" word and how do I use it?
(HTML)
HW68: Describes the function of the Open Firmware word "dump" and how it can be used.
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Technical Q&As |
1999-10-11
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What numeric base is the default for the Open Firmware user interface?
(HTML)
HW65: Describes how the default numeric base used by the Open Firmware user interface is hexadecimal.
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Technical Q&As |
1999-10-11
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Determining Open Firmware configuration variables
(HTML)
()
HW56: Discusses how to determine the Open Firmware variables on a system.
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Technical Q&As |
1999-03-29
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Expansion ROM device properties
(HTML)
()
HW50: Describes the Open Firmware properties that should be included in a boot device's expansion ROM.
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Technical Q&As |
1999-03-29
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Why did the name of the PCI bridge change?
(HTML)
()
HW59: Explains the name change of the PCI bridge to the generic name "pci" in Open Firmware.
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Technical Q&As |
1999-03-29
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Difference between using Restart or Shut Down in the Finder's Special menu in Open Firmware
(HTML)
()
HW47: Explains the differences between using Restart or Shut Down on Open Firmware
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Technical Q&As |
1999-02-15
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PCI Type 1 Cycles
(HTML)
HW26: Describes the circumstances when the PowerMac generates a Configuration Type 1 command.
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Technical Q&As |
1995-07-15
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