What are some of the difficulties in implementing the 66 MHz PCI bus? How is the PCI-X bus overcoming these difficulties? Explain the rationale for proposing the accelerated graphics port. What are...

What are some of the difficulties in implementing the 66 MHz PCI bus? How is the PCI-X bus overcoming these difficulties? Explain the rationale for proposing the accelerated graphics port. What are the reasons for allowing PCI requests to interrupt AGP pipelined requests?