PCI BUS STRUCTURE, PCI BUS CONTROLLING METHOD BY REPLACING READ OPERATION WITH WRITE OPERATION

摘要

PURPOSE: A PCI bus structure using substitution to a writing operation from a reading operation and a method for controlling the PCI bus are provided to improve efficiency of the reading operation by a turnaround cycle by substituting the reading operation to the writing operation. CONSTITUTION: A PCI(Peripheral Component Interconnect) bridge(10) connects a central processing unit to a PCI bus. The PCI bridge controls a channel drive of each apparatus which is connected to a PCI bus channel(20). The PCI bus channel electrically interlinks the PCI bridge and each apparatuses. In a first apparatus(30) and a second apparatus(40), substituting function of reading-writing is offered. The first apparatus and the second apparatus are electrically connected to the PCI bus channel.