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What is most relevant to the driver writer, however, is PCI’s support for autodetection PowerPC, SPARC64, and IA-64 systems, and some other platforms as well. PCI is currently used extensively on IA-32, Alpha, Platform independence is often a goal in the design of a computer bus, and it’s anĮspecially important feature of PCI, because the PC world has always been dominated by With a 32-bit data bus, and a 64-bit extension has been included in the specification. Runs at 25 or 33 MHz (its actual rate being a factor of the system clock), and 66-MHz andĮven 133-MHz implementations have recently been deployed as well. The PCI bus achieves better performance by using a higher clock rate than ISA its clock Peripherals, to be as platform independent as possible, and to simplify adding and removing Goals: to get better performance when transferring data between the computer and its The PCI architecture was designed as a replacement for the ISA standard, with three main The probing techniques discussed in Chapter 12 and Chapter 10 can be used with PCI devices, but the specification offers anĪlternative that is preferable to probing.
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Going to cover it all here in this section, we are mainly concerned with how a PCI driverĬan find its hardware and gain access to it. The PCI specification covers most issues related to computer interfaces. PCI as a way of laying out electrical wires, it is actually a complete set of specificationsĭefining how different parts of a computer should interact.