Multibus bus-to-ISA bus read-write operation switching circuit

Abstract

The invention discloses a Multibus bus-to-ISA bus read-write operation switching circuit. The Multibus bus-to-ISA bus read-write operation switching circuit switches the asynchronous read-write operation of the Multibus bus into the synchronous read-write operation of the ISA bus to realize the read-write operation of Multibus bus main equipment for ISA bus slave equipment. The Multibus bus-to-ISA bus read-write operation switching circuit is simple in structure and supports 8-bit and 16-bit data width, an address wire can be extended according to user requirements, and the address wire can be used for designing a hybrid bus computer system. The Multibus bus-to-ISA bus read-write operation switching circuit realizes mixed insertion and compatibility for configuring ISA bus slave equipment on a Multibus bus case and has broad application in the hybrid bus reinforced computer design field, computer bus board card test diagnosis field and the like.

Description

technical field [0001] The invention belongs to the field of reinforced computer design, in particular to a read and write operation conversion circuit from a Multibus bus to an ISA bus. Background technique [0002] PCI / CPCI, Multibus, and ISA are mainstream equipment buses for reinforced computers. Generally, computer systems use a single computer bus to form a series of designs, such as PCI bus computer, CPCI bus computer, Multibus bus computer, and ISA bus computer. The configuration modules generally include computer main modules. , AD module and 232 serial port module, special function module and other slave devices. In the design of reinforced computer, in order to improve the reliability of the system, it is hoped to use the identified mature modules or devices in the new system as much as possible, such as using the identified ISA bus slave modules (AD module, 232 serial port module, special function module) in the Multibus bus computer. modules, etc.) to form a mi...

AI Technical Summary

Problems solved by technology

However, there is no mature Multibus bus to ISA bus read and write operation conversion circuit in the prior art, and it is impossible to realize the mixed insertion and compatibility of ISA bus slave devices configured on the Multibus bus chassis

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