Bus address expansion method and device

Abstract

The invention discloses a bus address expansion method and device. In the bus address expansion method, a step of sending data to target expansion equipment by main equipment comprises the following steps: sending bus data based on a specified equipment address and an address supplement signal to a bus by the main equipment; reconstructing the bus data and the address supplement signal to generatebus data oriented to the target expansion device; the expansion equipment receives the bus data oriented to the target expansion equipment; the bus address expansion device comprises address expansion equipment between master equipment and slave equipment. According to the invention, the problem of limited bus addresses can be solved; the problem that the bus address cannot be covered due to thefact that the number of devices hung under the bus cannot be increased or the capacity of a single device hung under the bus is increased is solved. The problem that bus address coverage is incompletedue to increase of equipment capacity can be solved, and the problem that corresponding equipment zone bits or equipment addresses are not enough due to increase of the number of hitching equipment under a bus is solved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method and device for bus address expansion. Background technique [0002] Bus (Bus) is a public communication trunk line for transmitting information between functional modules in a computer system. It is an electrical signal transmission wiring harness composed of various conductors. It is widely used in the central processing unit of the computing system, the information communication between the central processing unit and the external equipment, or the information communication between the external equipment and the external equipment. The bus can connect multiple devices together, and distinguish devices by different flag bits or addresses, such as figure 1 As shown, the master device Master is connected to multiple slave devices Device_0~Device_n through the bus, and the master device Master distinguishes devices by different flag bits or addresses. This gr...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the above-mentioned problems of the prior art, a method and device for expanding the bus address are provided. The present invention can solve the problem that the number of connected devices under the bus cannot be increased or the The problem that the bus address cannot be covered due to the increase of the capacity of the single device connected under the bus can solve the problem of incomplete coverage of the bus address due to the increase of the device capacity, and solve the problem of corresponding device signs due to the increase in the number of devices connected to the bus Bit or device address is not enough

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