Computer system and inter-bus control circuit

摘要

In a computer system having a double PCI bus configuration, an inter-bus control circuit for relaying a first PCI bus and a second PCI bus is provided with a memory control mechanism common to devices connected to the second PCI bus and an interrupt control mechanism for controlling interrupts between local processors, in addition to a control function for controlling the buses. The inter-bus control circuit having the above mechanisms can be implemented by a single-chip integrated circuit. The integrated inter-bus control circuit prevents the use of a plurality of identical decoder circuits, an increase in the number of parts, and an increase in mounting area, thus providing a compact and low price computer system.