通过对并行接口芯片8255A内部结构的分析和实例的验证，得出8255A地址线的接法不唯一的结论。

Through analyzing the inner structure of the parallel interface chip 8255A and some examined examples, this paper puts forward that the link of the 8255A address line is not unique.

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通过并行测试结构，同时对几条受害线进行测试，有效减小了测试时间和电路面积。

With parallel test infrastructure, victim lines could be tested simultaneously, so that the test time and circuit area can be reduced efficiently.

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