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Method for simulating ISA bus with VXI digital I/O module

A bus, digital technology, applied in the field of VXI bus and ISA bus, can solve the problems of single function, low potential for transformation, low standardization of software and hardware, etc., to increase flexibility, improve interoperability, easy integration and application. Effect

Inactive Publication Date: 2003-08-20
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the existing test equipment, the test ISA board is generally inserted into the ISA slot of the computer for testing. The disadvantage is that if there are other interfaces on the ISA board, such as E1 interface (digital interface), audio interface, etc. etc., then other instruments or test boards are needed to provide excitation signals and receive response signals to the board. The test system built in this way has low degree of standardization of software and hardware, single function, poor versatility, reliability and maintainability, and the design needs to be modified. Small potential, unable to adapt to frequent upgrades of ISA board versions

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  • Method for simulating ISA bus with VXI digital I/O module

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Embodiment Construction

[0043] The VXI bus digital I / O module is a general-purpose module based on the VXI bus. In the method of simulating the ISA bus, firstly assign the input and output signals of the VXI digital I / O module to the meanings of the signal lines defined in the ISA bus. , and then through the operation function of the VXI bus, the operation of the ISA bus can be realized.

[0044] 1. Hardware description of VXI digital I / O module

[0045] The VXI digital I / O module in this embodiment is a VXI digital input / output module with C size, register base, single slot, static configuration, and A16 / D16 addressing mode. The module has 16 input / output channels CH1~CH8, CH33~CH40, 29 output channels CH9~CH32, TSOUT1~TSOUT5, and 2 input signals TSINP1~TSINP2. Each input and output signal level is TTL level (Transistor-Transistor-Logic, triode-transistor logic circuit). The digital I / O module is used to simulate the read and write cycles of the PC ISA bus, including memory read cycles, memory wri...

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Abstract

A method for simulating ISA bus with VXI digital I / O module includes assigning the pin signal meanings defined in ISA bus system to the input / output signals of VXI digital I / O module and performing the operations in ISA bus periods via the operation function of VXI bus. As the VXI bus test platform is used, the standardization of system hardware and solftware is realized. Its advantages include high system operatability and flexiblility, and easy integration and application.

Description

technical field [0001] The present invention relates to VXI (VMEbus expands VMEbuseXtensions for Instrumentation in instrument field) bus and ISA (Industry Standard Architecture) bus in the field of testing, more specifically relate to with the digital I / O (input / output) in the VXI bus test platform The output) module simulates the ISA bus and the method of testing the ISA board. Both VXI and ISA buses are industrial standard structure buses. Background technique [0002] In the existing test equipment, the test ISA board is generally inserted into the ISA slot of the computer for testing. The disadvantage is that if there are other interfaces on the ISA board, such as E1 interface (digital interface), audio interface, etc. etc., then other instruments or test boards are needed to provide excitation signals and receive response signals to the board. The test system built in this way has low degree of standardization of software and hardware, single function, poor versatilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/00
Inventor 辜世勇唐晓莉余宏发任艳王晓军
Owner ZTE CORP
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