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I/O Kit Fundamentals
(HTML)
(PDF)
The basics of developing device drivers. Includes descriptions of I/O Kit families.
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Guides |
2007-05-17
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Performance Overview
(HTML)
(PDF)
Introduces the factors that determine performance.
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Guides |
2006-10-03
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Memory Usage Performance Guidelines
(HTML)
(PDF)
Guidelines for improving the performance of memory-related code.
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Guides |
2006-06-28
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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 |
2009-03-04
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Affinity API Release Notes for Mac OS X v10.5
(HTML)
Explains how to influence which CPU core runs a group of threads (for performance optimization).
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Release Notes |
2007-10-31
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I/O Kit Power Management Release Notes
(HTML)
Describes the latest changes to power management for Mac OS X v10.5.
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Release Notes |
2007-10-31
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dist_fft
(HTML)
(DMG)
(ZIP)
Gigaelement FFTs on Apple G5 clusters
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Sample Code |
2004-08-23
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BlitVBL
(HTML)
(DMG)
(ZIP)
Shows how to have Mac OS X try its best to sync to the VBL for you.
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Sample Code |
2003-01-14
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PowerPC G5 Performance Primer
(HTML)
( )
TN2087: Offers a high-level overview of how to maximize performance on G5 Macs.
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Technical Notes |
2003-09-03
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Optimization Strategies for Mac OS X
(HTML)
TN1174: Achieving the best possible performance in your applications.
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Technical Notes |
1999-09-01
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Generating a Non-Maskable Interrupt (NMI)
(HTML)
()
QA1264: Explains how to generate a non-maskable interrupt (NMI) on modern Macintosh systems.
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Technical Q&As |
2008-10-13
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Disabling Processor Cores on a Multi-Core System
(HTML)
()
QA1141: Describes how to disable processor cores on a multi-core system for testing purposes.
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Technical Q&As |
2008-09-16
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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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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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Sleep vs. Doze on Mac OS X
(HTML)
QA1309: Discusses and demonstrates sleep versus doze detection on Machintosh Mac OS X
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Technical Q&As |
2003-10-09
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How can I tell if a PCI device has on board I/O space?
(HTML)
QA1287: Demonstrates "how to" tell if a PCI device has on board I/O space.
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Technical Q&As |
2003-09-24
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SDRAM Problems With Self-Powered USB Devices
(HTML)
()
HW82: Alerts that non-compliant, self-powered USB devices plugged into a G4, can cause problems with low-voltage-sensitive SDRAM .
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Technical Q&As |
2003-08-21
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Bluetooth Radio Power Class for Apple Systems
(HTML)
()
QA1278: Notes Preferred Bluetooth Transmitter Characteristics for products designed for Apple Systems.
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Technical Q&As |
2003-08-06
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DRAM DIMM power pin connections for Macintosh Computers
(HTML)
()
QA1271: Discusses design considerations for DRAM DIMM power pin connections for Macintosh Computers.
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Technical Q&As |
2003-07-04
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Power adapter Sensing for the 17" PowerBook
(HTML)
()
QA1266: Details Design and detection considerations for 17-inch PowerBook power adapters
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Technical Q&As |
2003-06-12
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Empty Memory Objects
(HTML)
()
QA1259: Describes how two memory management edge cases are handled by the common Mac OS memory allocators.
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Technical Q&As |
2003-04-21
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Faster DDR DRAM in the 867MHz Power Mac G4 (Mirrored Drive Doors)
(HTML)
()
QA1191: Confirms the use of faster DDR DRAM in the 867MHz Power Mac G4 (Mirrored Drive Doors).
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Technical Q&As |
2002-08-19
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PC100 SDRAM DIMMs on the Flat Panel iMac
(HTML)
()
QA1130: Describes PC100 SDRAM DIMM limitations on the "original " Flat Panel iMac.
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Technical Q&As |
2002-03-18
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Energy Star PCI Device
(HTML)
()
QA1108: Provides useful information for developers of Energy Star-compliant PCI devices.
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Technical Q&As |
2002-01-15
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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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Menu Bar Clock and NVRAM
(HTML)
QA1102: Explains why booting with the Command-Option-P-R keys doesn't reset date and time preferences.
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Technical Q&As |
2001-12-21
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Resetting NVRAM to factory defaults
(HTML)
QA1103: Describes what happens when you boot holding the Command-Option-P-R keys.
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Technical Q&As |
2001-12-21
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SDRAM, CAS Latency for the
(HTML)
QA1071: Describes the supported CAS Latency values for the "QuickSilver", PowerMac G4 CPUs.
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Technical Q&As |
2001-09-13
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Determining RAM size & location in New World Machines
(HTML)
QA1065: Demonstrates Open Firmware method of determining RAM size & location in New World Machines.
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Technical Q&As |
2001-08-01
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Displaying PCI Configuration Registers contents in Open Firmware
(HTML)
QA1036: Demonstrates how to display PCI Configuration Resister contents in Open Firmware.
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Technical Q&As |
2001-05-18
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Open Firmware version number
(HTML)
HW96: Discusses the unique values of Open Firmware version numbers.
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Technical Q&As |
2000-09-22
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PCI class codes
(HTML)
HW91: Explains why PCI class codes are important.
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Technical Q&As |
2000-09-05
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PCI Macintoshes and CardBus controllers
(HTML)
HW87: Explains why older PCI Macintoshes do not recognize a Cardbus controller.
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Technical Q&As |
2000-09-05
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A SCSI little secret
(HTML)
HW81: Details what to expect when accessing the motherboard SCSI bus on the Blue & White G3.
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Technical Q&As |
1999-12-20
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PCI Header types
(HTML)
HW78: Describes the three required types of PCI headers to be provided in its configuration header space.
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Technical Q&As |
1999-11-15
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Explanation of SDRAM configuration Nomenclature
(HTML)
HW75: Explains the three-part "Device configuration" numbers for SDRAM in the Power Mac G4 Computer Developer Note.
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Technical Q&As |
1999-10-18
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How do I change the numeric base for the Open Firmware user interface?
(HTML)
HW66: Explains how to change the numeric base for the Open Firmware user interface.
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Technical Q&As |
1999-10-11
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How do I determine the top of the Open Firmware dictionary?
(HTML)
HW69: Explains how to determine the top of the Open Firmware dictionary.
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Technical Q&As |
1999-10-11
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What is the word "see" and how do I use it to help me find what a word does?
(HTML)
HW72: Explains the function and use of the Open Firmware word "see".
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Technical Q&As |
1999-10-11
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Which Machines Support Driver Services Library and the MP Nanokernel?
(HTML)
()
HW63: Lists the systems that do and don't support the Driver Services Library and the MP Nanokernel.
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Technical Q&As |
1999-07-12
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Determining the version of Open Firmware on your Mac
(HTML)
()
HW60: Describes a method to display the version of Open Firmware on a Macintosh.
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Technical Q&As |
1999-03-29
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Stopping Forth command scrolls
(HTML)
()
HW57: Describes how to limit Forth commands from scrolling off the screen.
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Technical Q&As |
1999-03-29
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OTScheduleDeferredTask When Task Running
(HTML)
()
NW52: Describes what happens when you use OTScheduleDefferedTask to schedule a task that is running.
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Technical Q&As |
1997-10-13
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