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Date |
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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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2006-02-22
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Generating an NMI Without a Programmer's Switch
(HTML)
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QA1264: Explains how to generate a non-maskable interrupt (NMI) on CPUs without programmer's switches.
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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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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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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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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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2003-08-21
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Bluetooth Radio Power Class for Apple Systems
(HTML)
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QA1278: Notes Preferred Bluetooth Transmitter Characteristics for products designed for Apple Systems.
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2003-08-06
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DRAM DIMM power pin connections for Macintosh Computers
(HTML)
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QA1271: Discusses design considerations for DRAM DIMM power pin connections for Macintosh Computers.
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2003-07-04
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Power adapter Sensing for the 17" PowerBook
(HTML)
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QA1266: Details Design and detection considerations for 17-inch PowerBook power adapters
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2003-06-12
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Empty Memory Objects
(HTML)
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QA1259: Describes how two memory management edge cases are handled by the common Mac OS memory allocators.
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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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2002-08-19
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Disabling a Processor on a Multiprocessor System
(HTML)
()
QA1141: Describes how to disable a processor on a multiprocessor system for testing purposes.
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2002-05-22
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PC100 SDRAM DIMMs on the Flat Panel iMac
(HTML)
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QA1130: Describes PC100 SDRAM DIMM limitations on the "original " Flat Panel iMac.
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2002-03-18
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Energy Star PCI Device
(HTML)
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QA1108: Provides useful information for developers of Energy Star-compliant PCI devices.
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2002-01-15
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IOKit Framework Headers
(HTML)
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QA1107: Describes the differences between the headers in IOKit.framework and the I/O Kit headers in Kernel.framework.
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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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2001-12-21
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PCI Bus?
(HTML)
QA1104: Answers the question, "Do all Macintosh computers have a PCI bus?"
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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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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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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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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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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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2000-09-22
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PCI class codes
(HTML)
HW91: Explains why PCI class codes are important.
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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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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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1999-12-20
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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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1999-11-15
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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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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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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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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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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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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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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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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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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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1999-07-12
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Determining Open Firmware configuration variables
(HTML)
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HW56: Discusses how to determine the Open Firmware variables on a system.
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1999-03-29
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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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1999-03-29
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Stopping Forth command scrolls
(HTML)
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HW57: Describes how to limit Forth commands from scrolling off the screen.
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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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1999-03-29
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Are interrupts enabled while Open Firmware is running?
(HTML)
()
HW44: Explains that interrupts are disabled when Open Firmware is running.
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1999-02-15
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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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1997-10-13
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