Member Login Log In | Not a Member? Contact ADC
Jump To:
Technical Q&As: 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

Sorted by
Title
Sort by
Date
Adding dependencies with kmodload (HTML)
QA1097: Illustrates how to specify dependencies when using kmodload.
2001-12-05
ANSI SCSI Standards (HTML)
Deprecated - DV03: Describes past Macintosh systems that did not fully support the ANSI SCSI-1 standard.
1995-07-01
Are interrupts enabled while Open Firmware is running? (HTML) (日本語 HTML)
HW44: Explains that interrupts are disabled when Open Firmware is running.
1999-02-15
Detecting a CD-ROM (HTML) (日本語 HTML)
DV18: Demonstrates CD-ROM drive detection.
1997-01-31
Determining Open Firmware configuration variables (HTML) (日本語 HTML)
HW56: Discusses how to determine the Open Firmware variables on a system.
1999-03-29
The dreaded "incompatible flag -framework" error (HTML)
QA1096: Explains how to eliminate the incompatible flag -framework error in Project Builder.
2001-12-05
Expansion ROM device properties (HTML) (日本語 HTML)
HW50: Describes the Open Firmware properties that should be included in a boot device's expansion ROM.
1999-03-29
Generating an NMI Without a Programmer's Switch (HTML) (日本語 HTML)
QA1264: Explains how to generate a non-maskable interrupt (NMI) on CPUs without programmer's switches.
2004-04-26
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.
1995-07-01
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.
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.
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.
2002-01-15
Is the Open Firmware device tree object oriented? (HTML)
HW80: Discusses the object-oriented attributes of the Open Firmware device tree.
1999-11-15
Issues with boot time KEXT loading (HTML) (日本語 HTML)
QA1087: Explains how to solve problems with loading KEXTs at boot time.
2004-01-15
Making sense of IOKit error codes (HTML) (日本語 HTML)
QA1075: Explains how to interpret I/O Kit error codes.
2002-02-07
Mapping kernel memory to user space on Mac OS X 10.2 (HTML) (日本語 HTML)
QA1197: Describes a change to mapping kernel memory to user space affecting Mac OS X 10.2 and later.
2002-09-13
Open Firmware and the devalias node (HTML)
HW95: Open Firmware and the devalias node
2000-09-05
The "packages" node in the device tree (HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
2006-02-22
PCI Type 1 Cycles (HTML)
HW26: Describes the circumstances when the PowerMac generates a Configuration Type 1 command.
1995-07-15
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.
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.
2008-09-24
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.
1999-10-11
A SCSI little secret (HTML)
HW81: Details what to expect when accessing the motherboard SCSI bus on the Blue & White G3.
1999-12-20
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.
2005-05-10
What are configuration variables in Open Firmware? (HTML) (日本語 HTML)
HW38: Defines the configuration variables in Open Firmware.
1999-02-15
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.
1999-10-11
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.
1999-10-11
Why did the name of the PCI bridge change? (HTML) (日本語 HTML)
HW59: Explains the name change of the PCI bridge to the generic name "pci" in Open Firmware.
1999-03-29
Workaround for Asynchronous SCSIAction Crashes (HTML) (日本語 HTML)
Deprecated - QA1129: Explains how to workaround asynchronous SCSIAction crashes on Mac OS X.
2002-03-21