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Leopard Technical Notes: Hardware & Drivers
Open Firmware is the nonproprietary name of firmware that complies with IEEE Std 1275-1994. It is the ROM-based software that tests and initializes the hardware, determines the hardware configuration, loads or boots the operating system, and provides interactive debugging facilities in case of faulty hardware or software.
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Fundamentals of Open Firmware, Part III: Understanding PCI Expansion ROM Choices for Mac OS (HTML)
TN1044: Recommended contents for PCI expansion ROMs, including a table of standard devices, properties and methods.
 2001-06-26
Running files from a hard drive in Open Firmware (HTML)
TN2001: Demonstrates editing, saving, and retrieving Open Firmware commands to a file on a Macintosh hard drive.
 2000-09-22