OpenBoot Architecture
The OpenBoot architecture provides an increase in functionality and portability compared to the proprietary systems of some other hardware vendors. Although this architecture was first implemented by Sun Microsystems as OpenBoot on SPARC (Scaleable Processor Architecture) systems, its design is processor independent. The following are some notable features of OpenBoot firmware:
Plug-in device drivers A device driver that can be loaded from a plug-in device such as an SBus card. The plug-in device driver can be used to boot the operating system from that device or to display text on the device before the operating system has activated its own software device drivers. This feature lets the input and output devices evolve ...
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