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Writing Device Drivers
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Chapter 7

Device Access: Programmed I/O

The Solaris OS provides driver developers with a comprehensive set of interfaces for accessing device memory. These interfaces are designed to shield the driver from platform-specific dependencies by handling mismatches between processor and device endianness as well as enforcing any data order dependencies the device might have. By using these interfaces, you can develop a single-source driver that runs on both the SPARC and x86 processor architectures as well as the various platforms from each respective processor family.

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