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随着计算机的发展,利用计算机进行它自身的硬件维护和故障检测已成为计算机系统维护的有效方法之一。这一新的维护技术,不但节省了人力、物力,缩短了故障的寻找时间,而且大大提高了机器的使用效率,延长了机器的寿命。PDP—11/34计算机具有135条基本指令,如果将字指令、寻址方式包含在内其组合指令有400多条。同时,PDP—11/34机允许字指令和字节指令的交互使用,对CPU 的8个通用寄存器和外部设备寄存器进行统一编址,访问它们如同访问内存一样方便。利用该机强大的指令系统和灵活的寻址方式编制各个部件的测试程序以及系统的
With the development of the computer, using the computer to carry out its own hardware maintenance and fault detection has become an effective method of computer system maintenance. This new maintenance technology not only saves manpower and material resources, shortens the time to find fault, but also greatly improves the efficiency of the machine and prolongs the life of the machine. The PDP-11/34 computer has 135 basic instructions, including more than 400 combined instructions if word instructions, addressing methods are included. At the same time, the PDP-11/34 allows word instructions and byte instructions to be used interactively to address the CPU’s 8 general-purpose registers and external device registers in a unified manner. Accessing them is as easy as accessing memory. Using the machine’s powerful command system and flexible addressing method for the preparation of the various components of the test program and the system