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Leopard Technical Q&As: Graphics & Imaging
Quartz Services, a part of the Core Graphics framework, provides functions for the configuration and control of display hardware. The I/O Kit provides APIs that support the development of drivers and applications that access hardware. Developers can use these APIs to configure, control, and get information about display and other graphics hardware.

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The "packages" node in the device tree (HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
Specifiying if the CPU or the GPU should be used for rendering. (HTML)
QA1416: Which processor will be used for rendering in Core Image and how to affect it.
Is ColorSync thread safe? (HTML) (日本語 HTML)
QA1261: Discusses ColorSync thread-safety issues.
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.
Legacy Devices (HTML)
HW84: Discusses why legacy devices with hard-wired I/O addresses may not work properly with Open Firmware.
When to use PCMCIA, PC Card, and CardBus (HTML)
HW77: Explains the differences between PCMCIA, PC Card, and CardBus.
Difference between using Restart or Shut Down in the Finder's Special menu in Open Firmware (HTML) (日本語 HTML)
HW47: Explains the differences between using Restart or Shut Down on Open Firmware