Jump To:
Leopard Reference Library: Hardware & Drivers
Developers can write software that communicates with or controls SCSI devices and devices that adhere to the SCSI Architecture Model specifications. Mac OS X provides in-kernel drivers for compliant devices and, with I/O Kit APIs, supports application-level access to all devices that declare peripheral device types other than $00, $05, $07, or $0E.

Document Descriptions
On Off
Display

Sort by
Title
Sorted by
Resource Type
Sort by
Date
SCSI Architecture Model Device Interface Guide (HTML) (PDF)
Explains how to develop applications that communicate with or control SCSI Architecture Model devices.
Guides 2007-02-08
HBA Device Driver Programming Guide (HTML) (PDF)
Describes how to develop a high-performance, kernel-resident driver for an HBA device.
Guides 2006-05-23
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
Kernel Framework Reference (HTML)
Describes the APIs and classes (including I/O Kit families) that support kernel-resident device drivers.
Reference 2009-01-06
Disk Arbitration Framework Reference (HTML)
Describes Disc Arbitration API, which includes information on mount/unmount notification and dissent.
Reference 2008-04-08
SimpleUserClient (HTML) (DMG) (ZIP)
Shows how to create a user client for an I/O Kit kernel driver.
Sample Code 2008-08-27
CustomMediaIcons (HTML) (DMG) (ZIP)
Providing custom media icons for storage
Sample Code 2007-07-10
SCSIHBAEmulator (HTML) (DMG) (ZIP)
Demonstration of how to implement a virtual parallel tasking SCSI host bus adapter (HBA)
Sample Code 2007-02-20
SCSIOldAndNew (HTML) (DMG) (ZIP)
Demonstrates a backward-compatible technique for communicating with SCSI parallel devices on Mac OS X.
Sample Code 2006-12-07
USBPrivateDataSample (HTML) (DMG) (ZIP)
Demonstrates notifications when a USB device is hotplugged and associating arbitrary data with each device.
Sample Code 2006-10-16
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
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
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
Multipathing with FibreChannel on Mac OS X (HTML)
TN2173: An explanation on how FibreChannel multipathing works on Mac OS X and how to design storage hardware to take advantage of it
Technical Notes 2007-03-23
CD-ROM Driver Calls (HTML)
Deprecated - DV22: Discusses public interface to Apple CD-ROM driver and supersedes information in AppleCD SC Developer's Guide.
Technical Notes 2000-08-14
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
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
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
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
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
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
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
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
Workaround for Asynchronous SCSIAction Crashes (HTML) (日本語 HTML)
Deprecated - QA1129: Explains how to workaround asynchronous SCSIAction crashes on Mac OS X.
Technical Q&As 2002-03-21
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
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
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
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
A SCSI little secret (HTML)
HW81: Details what to expect when accessing the motherboard SCSI bus on the Blue & White G3.
Technical Q&As 1999-12-20
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
Detecting a CD-ROM (HTML) (日本語 HTML)
DV18: Demonstrates CD-ROM drive detection.
Technical Q&As 1997-01-31
Getting a List of Drivers & LUNs (logical unit numbers) (HTML)
Deprecated - DV04: Describes a legacy Mac OS technique for obtaining a list of SCSI Parallel drivers, devices, and LUNs.
Technical Q&As 1995-07-01