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Leopard Reference Library: Hardware & Drivers
FireWire is a cross-platform implementation of the high-speed serial data bus defined by the IEEE 1394 standards. Developers can use I/O Kit APIs to develop both application-level and in-kernel FireWire drivers.

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Allocating and sharing memory with user space from an I/O Kit driver (HTML) (日本語 HTML)
QA1197: Describes the preferred technique for allocating and sharing buffers in an I/O Kit kernel driver.
Technical Q&As 2008-10-13
AppleFWAudio Vendor Specific Override Driver (HTML) (DMG) (ZIP)
This KEXT allows third-party vendors to customize AppleFWAudio with their own device-specific information.
Sample Code 2007-06-01
Available FireWire Isochronous Bandwidth (HTML)
QA1356: Discusses attempting to "pre-flight" an isochronous bandwidth allocation request by reading the currently available bandwidth.
Technical Q&As 2004-07-07
Building Universal I/O Kit Drivers (HTML)
TN2163: How to build a universal I/O Kit kernel driver while avoiding common pitfalls.
Technical Notes 2008-08-18
The dreaded "incompatible flag -framework" error (HTML)
QA1096: Explains how to eliminate the incompatible flag -framework error in Project Builder.
Technical Q&As 2001-12-05
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.
Reference 2008-04-08
FireWire Developer Note (HTML)
Provides an overview of FireWire (IEEE 1394) and describes support for it on Mac computers.
Guides 2008-04-28
FireWire Device Interface Guide (HTML) (PDF)
Explains how to develop applications to communicate with or control FireWire devices and units.
Guides 2007-02-08
FireWire: DCL Programs Under Mac OS X (HTML) (日本語 HTML)
TN2072: Describes the structure and creation of DCL programs under Mac OS X.
Technical Notes 2003-06-21
Generating a Non-Maskable Interrupt (NMI) (HTML) (日本語 HTML)
QA1264: Explains how to generate a non-maskable interrupt (NMI) on modern Macintosh systems.
Technical Q&As 2008-10-13
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.
Reference 2009-03-04
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.
Technical Q&As 2003-10-28
IODeviceTree and the I/O Registry (HTML) (日本語 HTML)
QA1120: Describes the IODeviceTree plane in the Mac OS X I/O Registry.
Technical Q&As 2008-09-18
IOKit Framework Headers (HTML) (日本語 HTML)
QA1107: Describes the differences between the headers in IOKit.framework and the I/O Kit headers in Kernel.framework.
Technical Q&As 2002-01-15
iSight Programming Guide (HTML) (PDF)
Describes the Apple iSight video camera and its enhancements.
Guides 2004-10-05
Issues with boot time KEXT loading (HTML) (日本語 HTML)
QA1087: Explains how to solve problems with loading KEXTs at boot time.
Technical Q&As 2004-01-15
Kernel Framework Reference (HTML)
Describes the APIs and classes (including I/O Kit families) that support kernel-resident device drivers.
Reference 2009-01-06
Making sense of IOKit error codes (HTML) (日本語 HTML)
QA1075: Explains how to interpret I/O Kit error codes.
Technical Q&As 2002-02-07
The "packages" node in the device tree (HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
Technical Q&As 2006-02-22
Power Management; Policy Maker vs. Power Controller (HTML) (日本語 HTML)
QA1121: Describes the differences between a Power Management Policy Maker and a Power Management Power Controller.
Technical Q&As 2002-02-13
Retain Counts of io_object_t Objects in IOKit.framework (HTML) (日本語 HTML)
QA1195: Distinguishes between the retain counts of an I/O Kit kernel object and its io_object_t user space proxy.
Technical Q&As 2008-09-24
Sending SCSI or ATA commands to storage devices (HTML) (日本語 HTML)
QA1179: Explains that Mac OS X does not implement SCSI or ATA pass-through for many mass storage devices.
Technical Q&As 2005-05-10
simpleAVC (HTML) (DMG) (ZIP)
Shows how to discover and send commands to AVC devices connected by FireWire.
Sample Code 2003-01-14
Understanding and Debugging Kernel Panics (HTML) (日本語 HTML)
TN2063: Addresses kernel panics: what they are and how to debug the code that caused the panic.
Technical Notes 2008-08-14
USBPrivateDataSample (HTML) (DMG) (ZIP)
Demonstrates notifications when a USB device is hotplugged and associating arbitrary data with each device.
Sample Code 2006-10-16
Use the Doorbell (HTML) (日本語 HTML)
Deprecated - FW01: Explains the function of the FireWire Serial Bus Protocol 2 (SBP2) doorbell.
Technical Q&As 1999-05-17
VendorSpecificType00 (HTML) (DMG) (ZIP)
Demonstrates how to access vendor-specific storage device functionality using a simple interface from user space code.
Sample Code 2006-10-02
Video capture with multiple IIDC cameras (HTML)
QA1365: Discusses factors which influence the number of IIDC cameras that can simultaniously be used for capture.
Technical Q&As 2008-08-08
What are configuration variables in Open Firmware? (HTML) (日本語 HTML)
HW38: Defines the configuration variables in Open Firmware.
Technical Q&As 1999-02-15
What are snag keys in Open Firmware? (HTML) (日本語 HTML)
HW35: Explains Open Firmware snag keys, including examples of their function.
Technical Q&As 1999-02-15
What is unsolicited status? (HTML) (日本語 HTML)
FW03: Explains the meaning and usage of the SBP-2 unsolicited status message.
Technical Q&As 1999-05-17