The PCI bus protocol is very complicated. The PCI bus is currently the most advanced bus on the PC. The information in these registers allows the computer to automatically configure the PCI card. A PCI interface includes a series of registers. Through the PCI-PCI bridge, it can allow unlimited expansion PCI bus It replaces the VESA local bus with its plug-and-play feature. It can be applied to various platforms and supports multi-processors and concurrent work. Expansion cards that comply with the PCI specification can be inserted into any PCI system to work reliably the PCI bus can provide a very high data transfer rate (132MB/S) PCI The bus has nothing to do with the CPU, and has nothing to do with the clock frequency.
The PCI bus has strict specifications, which ensures that it has good compatibility.
In 1992, many groups led by INTEL began to design the PCI bus, and its V2.0 specification was officially released in April 1993. PCI (Peripheral Component Interconnect) bus is a local bus that can provide a high-performance data bus for the main CPU and peripherals.
